Leg : 70 Top/Bottom Interval(mm): 0/ 80 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 836.08
Core: X 1 Top of Core Depth (m) : 836.00
Sect: CC Top of Section Depth(m): 836.10
LITHOLOGY: CPX-PYX-PLAG PHYRIC BASALT;
Piece No. : PCE 134 (0-8);
Texture : PHYRIC, MEDIUM TO COARSE-GRAINED, ROUNDED;
Alteration : MOD;
Comments : THIS PCE IS NOT LITHOSTRATIGRAPHICALLY AT THE RIGHT
PLACE AND PROBABLY FELL DOWN HOLE;
Vesicles : Size(mm): Percent: 0
NO VESICLES;
Phenocrysts: OLIVINE
CLINOPYROXENE
PLAGIOCLASE
Leg : 70 Top/Bottom Interval(mm): 0/ 270 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 507.77
Core: 32 Top of Core Depth (m) : 507.50
Sect: 1 Top of Section Depth(m): 507.50
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 135 (2-7), 136 (2-7), 137 (10-14), 138 (15-20),
139 (20-27);
Texture : BRECCIA PARTICLES AND MATRIX ARE BASALT, SMEC AND
BROWN OXIDES STAIN AND PARTIALLY FILL MATRIX IN ALL
PCES, THE MATRIX HAS BEEN MOSTLY REPLACED BY SMEC,
ANGULAR FRAGMENTS IN MATRIX ARE FINE TO MEDIUM-
GRAINED PLAG+CPX+OL PHYRIC BASALT, GREEN SMEC COLOR
DUE TO INFILTRATION OF MATRIX;
Comments : LITHOSTRATIGRAPHIC UNIT 1;
Leg : 70 Top/Bottom Interval(mm): 290/1500 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 509.00
Core: 32 Top of Core Depth (m) : 507.50
Sect: 1 Top of Section Depth(m): 507.79
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 140 (29-37), 141 (39-45), 142 (47-55),
143 (57-62), 144 (63-64), 145 (66-72),
146 (73-78), 147 (80-84), 148 (87-90),
149 (93-100), 150 (101-110), 151 (112-115),
152 (118-120), 153 (118-121), 154 (123-125),
155 (126-129), 156 (130-133), 157 (140-150);
Texture : PHYRIC, PCE 140 HAS AN ORIENTED (UP) GLASSY RIM;
Structure : BLUE GREEN SMEC COATINGS AND VEINS FILLING
THROUGHOUT SECTION-IN PCES 140+142+145-147+150,
SULFIDE VEINLET IN PCE 152, BROWN OXIDE(?) STAIN ON
CRACKS;
Alteration : MOD;
Comments : BEGINNING OF LITHOSTRATIGRAPHIC UNIT 2 WHICH
CONTAINS THE REMAINDER OF CORE 32, GLASS RIM OF PCE
140 IS THE BEGINNING OF COOLING UNIT 1, THE
REMAINDER OF CORE 32-1 ALL ARE MEMBERS OF THIS
COOLING UNIT;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
GREEN TO BLUE-GREEN, MANY OL PHENOS ARE REPLACED,
SMEC IS UBIQUITOUS AS PSEUDOMORPHS+COATINGS+VEIN
FILLING AND IS VISIBLE IN EVERY PCE IN ONE MODE OF
OF OCCURRENCE OR ANOTHER;
Alteration : BROWN OXIDE(?) STAIN ON SURFACES OF PCES 142+147+
149+150+154+157;
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 510.50
Core: 32 Top of Core Depth (m) : 507.50
Sect: 2 Top of Section Depth(m): 509.00
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 158 (1-6), 159 (10-15), 160 (17-24),
161 (27-32), 162 (34-40), 163 (40-45), 164 (46-52),
166 (62-68), 167 (69-78), 168 (80-87), 169 (87-95),
170 (96-100), 172 (102-110), 173 (112-120),
174 (121-127), 175 (122-127), 176 (130-135),
177 (135-145), 178 (145-150);
Texture : PHYRIC, PCES 158-160 ARE MEDIUM GRAINED, BOTTOM OF
PCE 160 IS A GLASSY RIM, SMALL AREA OF GLASS IN PCE
161, PCE 162 IS FINE-GRAINED AND IS INCREASINGLY
FINER TOWARD THE TOP OF THE PCE WITH NO GLASSY RIM,
PCES 163-172 ARE MEDIUM-GRAINED, PCE 161 IS PROBABLY
PART OF THE FINE-GRAINED BOTTOM, PCE 173 IS MEDIUM-
GRAINED WITH A GLASSY RIM ON ONE SIDE, PCES 174-175
ARE THE SAME AS PCE 173 BUT WITHOUT GLASSY RIM, PCE
176 IS THE SAME AS PCES 174-175, PCE 177 IS THE
SAME AS PCE 173 WITH A GLASSY RIM ON ONE SIDE,
PCE 178 IS THE SAME AS PCE 177 BUT WITH NO GLASSY
RIM;
Structure : IN PCE 162 NUMEROUS CRACKS (TO 3MM) FILLED WITH
SMEC, IN PCES 163 TO 172 NUMEROUS CRACKS FILLED WITH
DARK GREEN SMEC, IN PCES 174-175 THE CRACKS (>8MM)
FILLED WITH SMEC ARE THICK;
Alteration : MOD
IN PCE 158 TWO UNEQUAL AREAS OF ALTERATION ARE
SHOWN: AT THE TOP(WHERE PHENOS ARE ALTERED IN A
BROWN MATERIAL (OXIDATION?)) AND AT THE BOTTOM OF
THE PCE WHERE PHENOS ARE ALTERED IN A GREEN
MATERIAL, IN PCE 173 THICK (>7MM) GREEN AND YELLOW
GREEN ALTERED RIM (ABOVE AND INSIDE THE GLASSY
RIM)-THE SMALL PCES OF 173 ARE PART OF THIS
ALTERED RIM;
Comments : PCES 158-160 ARE A CONTINUATION OF COOLING UNIT 1,
PCES 161-172 ARE COOLING UNIT 2, PCES 173-176 ARE
COOLING UNIT 3, PCES 177-178 ARE COOLING UNIT 4,
PCE 173 CANNOT BE ORIENTED;
Phenocrysts: OLIVINE ( 10%)
Size(mm): 10-12
PLAGIOCLASE ( 12%)
Size(mm): 0.5-3
Replacement: SMECTITE
RUSTY MATERIAL PARTLY REPLACES PLAG IN PCE 176,
PERFECT ANHEDRAL OL ALTERED BROWN;
Leg : 70 Top/Bottom Interval(mm): 0/ 350 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 510.85
Core: 32 Top of Core Depth (m) : 507.50
Sect: 3 Top of Section Depth(m): 510.50
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 179 (1-8), PCE 180 (10-34);
Texture : PHYRIC;
Alteration : MOD
PCE 179 HAS GREEN SMEC AND CRIMSON HEMATITE
STAINING ON EXTERIOR, ALSO BLUE-GREEN SMEC
CRUSTS AND STAINING ON PCE 180, THE CHUNKS
COMPRISING PCE 180 ARE PARTIALLY COLORED ORANGE-
BROWN WHERE PHENOS HAVE BEEN OXIDIZED ALONG
SPECIFIC ZONES OF THE SAMPLE, THIS LIMONITE-LIKE
ALTERATION COLOR SEEMS TO BE FRACTURE CONTROLLED,
ALSO BLUE-GREEN SMEC CRUSTS AND STAINING 180;
Comments : REMAINDER OF COOLING UNIT 4, PCE 180 INCLUDES 8
SMALLER CHUNKS;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
GREEN AND BLUE-GREEN;
HEMATITE
CRIMSON;
Leg : 70 Top/Bottom Interval(mm): 0/1350 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 517.85
Core: 33 Top of Core Depth (m) : 516.50
Sect: 1 Top of Section Depth(m): 516.50
LITHOLOGY: OL-PLAG PHYRIC BASALT;
Piece No. : PCES 181 (0-6), 182 (8-17), 183 (17-24),
184 (25-32), 185A (30-37), 185B (37-38),
186 (37-43), 187 (42-48), 188 (47-55), 190 (57-60),
189 (60-65), 191A (65-70), 191B (69-76),
192 (76-85), 193 (85-93), 194 (92-100),
195 (98-103), 196 (105-109), 197 (108-113),
198 (116-122), 199 (125-131), 200 (132-135);
Texture : PCES 181-192 ARE MEDIUM-GRAINED, PCES 193-195
ARE VERY FINE-GRAINED AND ARE BORDERED BY A THIN
(AVERAGE 1MM, MAXIMUM 4MM) RIM OF GLASS;
Structure : IN PCES 181 OXIDIZED VEINS CHIEFLY ON THE DRILLED
SURFACE (1-2CM THICK) AND FE.HYDROXIDE VEINS ARE
CONTROLLED BY CRACKS AND SEEM TO HAVE RANDOM
DIRECTIONS, WHERE THE SAMPLES HAVE BEEN BROKEN ALONG
THE CRACKS THERE IS A WHITE-BLUE GREENISH SOFT OR
DARK GREEN SOFT FILLING IS OBSERVED (SMEC AND
ZEOLITE?), THE FINE-GRAINED BASALT (PCES 193-195)
MAY REPRESENT XENOLITHS SURROUNDED BY GLASS (MAY BE
DIKE), IN PCES 196-200 NUMEROUS CRACKS FILLED BY
DARK GREEN SMEC;
Alteration : MOD
OXIDIZED VEINS IN PCES 181-192, GLASS RIM IN PCES
193-195 IS VERY OFTEN REPLACED BY DARK GREEN SMEC,
PCE 195 HAS A RIM OF SMEC AND CALCITE;
Comments : CONTINUATION OF COOLING UNIT 4 AND OF
LITHOSTRATIGRAPHIC UNIT 2, PCES 196 AND 197 ARE
PERHAPS THE CONTINUATION OF 193-195 BUT ONLY THE
SMEC BORDER OF THE FINE-GRAINED BASALT IS VISIBLE;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
ZEOLITE
ID UNCERTAIN;
OL IS REPLACED BY DARK BROWN MATERIAL, PLAG IS
REPLACED BY PALE ORANGE MATERIAL;
CALCITE
Leg : 70 Top/Bottom Interval(mm): 0/1420 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 519.42
Core: 33 Top of Core Depth (m) : 516.50
Sect: 2 Top of Section Depth(m): 518.00
LITHOLOGY: OL-PLAG PHYRIC BASALT;
Piece No. : PCES 201 (0-12), 202 (12-17), 203 (19-22),
204 (23-30), 205 (32-36), 206 (40-43), 207 (45-50),
208 (50-57), 209 (58-68), 210 (70-80),
211 (80-86), 212 (88-93), 213 (96-103),
214 (106-111), 215 (113-120), 216 (122-130),
217 (130-135);
Texture : PHYRIC;
Structure : BLUE-GREEN SMEC FILLS CRACKS AND VOIDS, SMEC VEINS
ARE IN PCES 201+202+204+206+208+209+211+212+216+
217, CALCITE OCCURS WITH SMEC IN PCES 216-217,
TEXTURE OF VEIN FILLING SUGGEST THE PARAGENETIC
SEQUENCE: (GREEN SMEC PLUS OR MINUS CALCITE) TO
(BLUE-GREEN SMEC) TO OXIDES;
Alteration : MOD
APPARENT OXIDATION (ORANGE-BROWN STAINING) IS MUCH
MORE PERVASIVE IN THIS CORE THAN IN 32, THE
OXIDATION APPEARS TO BE MAINLY CONTROLLED BY THE
FRACTURE PATTERN;
Comments : CONTINUATION OF COOLING UNIT 4 AND OF
LITHOSTRATIGRAPHIC UNIT 2;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
Minerals Replaced: OL
OL GENERALLY ALTERED TO SMEC BUT ADJACENT TO
FRACTURES ARE STAINED ORANGE-BROWN, PLAG IS
ALTERED;
Leg : 70 Top/Bottom Interval(mm): 0/1480 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 526.98
Core: 34 Top of Core Depth (m) : 525.50
Sect: 1 Top of Section Depth(m): 525.50
LITHOLOGY: OL-PLAG MOD PHYRIC TO PHYRIC BASALT;
Piece No. : PCES 218 (2-5), 219 (6-20), 220 (20-24),
221 (24-30), 222 (28-35), 223 (36-40), 224 (45-50),
225 (51-60), 226 (61-69), 227 (70-79), 228 (81-89),
229 (92-93), 230 (100-107), 231 (108-115),
232 (114-118), 233 (118-120), 234 (122-133),
235 (135-141), 236 (143-148);
Texture : MOD PHYRIC TO PHYRIC, MEDIUM-GRAINED, COATING OF
LIGHT GREEN MATERIAL IS COMMON AS COATINGS IN PCES
224-236, GLASSY ZONES COMMON;
Structure : NUMEROUS VEINLETS FILLED WITH GREEN SMEC (EG. 223),
PCE 226 REDDISH HEMATITIC VEIN FILLING IS ASSOCIATED
WITH IRREGULAR SHAPED GLASSY ZONE WHICH IS
PENETRATED BY GREEN SMEC VEINLETS, WHITE OPAL(?)
VEINLETS ALSO PRESENT, IN ALTERATION ZONES ARE
FE.OX OR IDDINGS FILLED FRACTURES, LIGHT GREEN
MATERIAL COMMON AS VEINS IN PCES 224-236;
Alteration : MOD
WITHIN MOST PCES ARE CONSPICUOUS ZONES OF REDDISH
ALTERATION UP TO 2-3CM ACROSS-SOMETIMES WITH SHARP
BORDERS (AS IN PCES 219+225) OR SOMETIMES MORE
DIFFUSED IN NATURE (AS IN PCE 28), WITHIN THESE
ZONES OL XTALS ARE CROSSED BY NUMEROUS FE.OX OR
IDDINGS FILLED FRACTURES WHILE PLAG XTALS ARE
DISCOLORED TO A PALE ORANGISH BROWN, WHERE THE
ROCK ALTERATION ZONE HAS A SHARP BORDER (AS IN PCE
225), THE BORDER IS SO CLEARLY DEFINED THAT IT MAY
TRANSECT INDIVIDUAL ZONES SO THAT RELATIVELY FRESH
OL IS ON THE LESS ALTERED SIDE AND OL LARGELY
REPLACED BY FE.OX ON THE OTHER;
Comments : CONTINUATION OF COOLING UNIT 4 AND OF
LITHOSTRATIGRAPHIC UNIT 2, FROM PCE 224 ONWARDS
(INCLUDING PCE 224) MAY BE THE BEGINNING OF
ANOTHER LITHOLOGICAL UNIT-AS IRREGULAR GLASSY ZONES
AND RIMS BECOME COMMON (EXTENDING INTO SECTION
34-2);
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
GLASSY MATERIAL PERVASIVELY ALTERED TO SMEC;
IDDINGSITE
FERROUS MN OXIDE
Minerals Replaced: OL
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 528.50
Core: 34 Top of Core Depth (m) : 525.50
Sect: 2 Top of Section Depth(m): 527.00
LITHOLOGY: PLAG-OL PHYRIC TO MOD PHYRIC BASALT;
Piece No. : PCE 237 (0-7), 238 (7-9), 239 (12-13), 240 (16-23),
241 (25-30), 242 (32-37), 243 (40-47), 244 (50-55),
245 (57-70), 246 (71-75), 247 (73-78), 248 (79-84),
249 (85-95), 250 (97-102), 251 (105-110),
252 (110-115), 253 (116-125), 254 (127-135),
255 (137-142), 256 (145-150);
Texture : PHYRIC TO MOD PHYRIC, PCES 243+254 HAVE FRESH GLASSY
RIMS, PCES 239+240+250 HAVE ALTERED RIMS, IN PCE
240 THE GLASSY RIM IS ALMOST COMPLETELY ALTERED IN
DARK GREEN MATERIAL, THE NUMEROUS SAMPLES WITH
GLASSY RIMS INDICATE A PILLOW UNIT;
Structure : SMALL VEINLETS IN PCES 237+242-245+
248+249+253 ARE FILLED WITH GREEN AND LIGHT WHITE-
GREEN MATERIAL (SMEC AND CALCITE), IN SOME FRACTURES
REDDISH-BROWN IRON-OXIDE (HEMATITE) OCCURS, IN PCE
240 A VEIN (2MM THICK) IS FILLED WITH WHITE CALCITE
AT THE BORDERS AND WITH GREEN SMEC AT THE CENTER;
Alteration : MOD
ALL PCES ARE ALTERED, MOST OF THE PCES ARE
REDDISH COLORED IN THE ALTERED PARTS,FRESHER PARTS
ARE OBSERVED IN SAMPLES 242-245+248+253, IN THESE
PCES SOME SPECIMENS OF NEARLY FRESH OL CAN BE
OBSERVED;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 3?;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: IDDINGSITE
Minerals Replaced: OL
FERROUS MN OXIDE
OL IS REPLACED IN ALMOST ALL PCES BY IDDINGS IN
FRESHER PARTS OR IRON OXIDE IN MORE ALTERED PARTS
OF THE PCES;
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 536.00
Core: 35 Top of Core Depth (m) : 534.50
Sect: 1 Top of Section Depth(m): 534.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 257 (2-6), 258 (7-9), 259 (8-10), 260 (11-17),
261 (17-20), 262 (22-27), 263 (33-37), 264 (42-48),
265 (50-54), 266 (57-65), 267 (68-75), 268 (74-78),
269 (81-85), 270 (85-87), 271 (86-90), 272 (93-100),
273 (100-105), 274 (106-112), 275 (115-121),
276 (125-133), 277 (135-139), 278 (141-143),
279 (145-147), 280 (147-149);
Texture : MOD PHYRIC, FINE TO MEDIUM-GRAINED, GLASS OF PILLOW
RIM FRAGMENTS IN PCES 273+274 IS IN PART ALTERED TO
THE GREEN SMEC (?) MINERAL, WITHIN THE DARK RIM
MATERIAL GLASSY REMNANTS ARE OFTEN IN SHARP CONTACT
WITH SMEC MATERIAL;
Structure : VEINS OF WHITE MINERAL (RADIATING STRUCTURE, NO FIZZ
WITH HCL, HARD AND RATHER GLASSY-SEE XFD-PROBABLY
ZEOLITE), THIN WHITE VEINLETS IN PCES 276+277;
Alteration : IN PCES 269-271+273+274 THIN (2-5MM) BROWNISH-
YELLOW ALTERATION ZONES ARE PRESENT, THESE ARE
ALWAYS PRESENT BETWEEN THE DARK PILLOW RIM AND THE
GRAYISH XTALLINE BASALT (SEE THIN SECTION OF PCE
270), BELOW 70CM BASALT IS VARIABLY ALTERED IN ITS
XTALLINE PORTIONS TO IRREGULAR BROWNISH-YELLOW
COLORATION WHICH GRADES INTO TYPICAL GRAYISH
COLORATION;
Phenocrysts: PLAGIOCLASE
OLIVINE
LESS ALTERED BELOW 70CM;
Replacement: ZEOLITE
COMMON;
SMECTITE
ID UNCERTAIN ON GREEN SMEC, BEST EXAMPLE OF THE
RADIATING STRUCTURE OF THE WHITE MINERAL FILLING
VEINS IS IN PCE 266 WHERE THE MINERAL IS ABUNDANT
IN ASSOCIATION WITH GREENISH ALTERED GLASS;
Leg : 70 Top/Bottom Interval(mm): 0/1000 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 537.00
Core: 35 Top of Core Depth (m) : 534.50
Sect: 2 Top of Section Depth(m): 536.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 281 (0-10), 282 (14-20), 283 (21-25),
284 (25-28), 285 (28-32), 286 (33-35), 287 (36-39),
288 (40-49), 289 (50-58), 290 (64-68), 291 (72-90),
292 (91-99);
Texture : MOD PHYRIC, FINE-GRAINED, NO GLASSY RIMS IN THIS
SECTION;
Structure : ONE CALCITE VEINLET IN PCE 282, SMEC AND LIGHT GREEN
ZEOLITE VEINLET PRESENT, LITHOLOGICAL UNIT 4
(BELOW PCE 218 OR 282) IS MORE MASSIVE THAN
LITHOLOGICAL UNIT 3;
Alteration : MOD;
EXT
PCE 282 IS EXT ALTERED, PCE 282 HAS A RELATIVELY
FRESH CENTRAL PART, TWO DIFFERENT ALTERATION
COLORS OCCUR IN THIS SECTION-YELLOWISH GRAY (PCES
284+285) AND REDDISH-BROWN (PCES 288-290) WITH
THE FORMATION OF FE.OXIDES, THE SAMPLES SEEM
FRESHER THAN THOSE OF CORES 32+33, THE DIFFERENT
ALTERATION COLORS (REDDISH BROWN AND YELLOWISH
GRAY) MAY REFLECT DIFFERENT (MORE OR LESS)
OXIDATIVE CONDITIONS, NO ZEOLITE ALTERATION;
Comments : LITHOLOGICAL UNIT 3 ENDS AT PCE 281 OR 282,
LITHOLOGICAL UNIT 4 IS MORE MASSIVE;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: CALCITE
QUARTZ
ID UNCERTAIN;
FERROUS MN OXIDE
AT SIDES OF PCE 282 CALCITE+ZEOLITE+SOME
FE.OXIDES;
Leg : 70 Top/Bottom Interval(mm): 0/1270 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 544.77
Core: 36 Top of Core Depth (m) : 543.50
Sect: 1 Top of Section Depth(m): 543.50
LITHOLOGY: OL-PLAG PHYRIC BASALT;
Piece No. : PCE 293 (0-9), 294 (8-17), 295 (17-27), 296 (26-40),
297 (38-48), 298 (50-56), 299A (55-61),
299B (60-80), 300A (80-90), 300B (88-92),
301A (91-110), 301B (110-113), 302 (114-120),
303 (120-126);
Texture : PHYRIC, MEDIUM TO COARSE-GRAINED, NO GLASSY RIM;
Structure : MASSIVE, CRACKS ARE LESS NUMEROUS AND THINNER (ABOUT
1MM) AND FILLED WITH DARK GREEN CLAY(?) AND SOME
CRYSTALS OF PYRITE ON PCES 293+294+303;
Alteration : SLIGHTLY
NO BROWN ALTERATION (OXIDATION), THESE BASALTS ARE
MUCH FRESHER THAN THOSE OF LITHOLOGICAL UNIT 3;
Comments : LITHOLOGICAL UNIT 4 LESS ALTERED THAN UNIT 3;
Phenocrysts: OLIVINE
Size(mm): 1-1.5
PLAGIOCLASE
Size(mm): 1-1.5
Replacement: CLAY
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 546.50
Core: 36 Top of Core Depth (m) : 543.50
Sect: 2 Top of Section Depth(m): 545.00
LITHOLOGY: OL-PLAG PHYRIC BASALT;
Piece No. : PCE 304 (2-17), 305 (17-29), 306 (30-40),
307 (40-50), 308 (54-56), 309 (59-72), 310 (71-85),
311 (85-98), 312 (97-105), 313 (107-121),
314 (122-127), 315 (130-145), 316 (148-150);
Texture : PHYRIC, COARSE TO MEDIUM-GRAINED;
Structure : FRACTURES AND VEIN FILLINGS ARE MUCH LESS COMMON
THAN IN LITHOSTRATIGRAPHICAL UNIT 3, PYRITE EXISTS
AS A MINOR VEIN FILLING IN PCES 304+313, SMEC FILLS
CRACKS IN PCE 304;
Alteration : MOD
GENERALLY FRESHER THAN LITHOLOGICAL UNIT 3;
Comments : CONTINUATION OF UNIT 4;
Phenocrysts: OLIVINE
Size(mm): 1-2
PLAGIOCLASE
Size(mm): 1-2
Replacement: SMECTITE
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/1400 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 547.90
Core: 36 Top of Core Depth (m) : 543.50
Sect: 3 Top of Section Depth(m): 546.50
LITHOLOGY: OL-PLAG PHYRIC BASALT;
SAME BASALT AS SECTION 36-1;
Piece No. : PCE 317 (0-10), 318 (12-25), 319 (27-30),
320 (32-40), 321 (42-47), 322 (50-60), 323 (61-69),
324 (71-92), 325 (95-126), 326 (128-132),
327 (135-138);
Texture : PHYRIC, BLUE AND BROWN COATING ON THE SURFACES OF
PCES 319 AND PART OF 320;
Alteration : SLIGHTLY
PCES 317-322 SHOW SOME AREAS OF BROWN ALTERATION
(OXIDATION);
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 4;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: PYRITE
RARE CRYSTALS OF PYRITE;
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 549.50
Core: 36 Top of Core Depth (m) : 543.50
Sect: 4 Top of Section Depth(m): 548.00
LITHOLOGY: PLAG-CPX-OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 328 (1-26), 329 (26-35), 330 (37-53),
331 (54-60), 332 (62-75), 333 (76-87), 334 (90-97),
335 (100-106), 336 (109-120), 337 (121-125),
338 (127-131), 339 (133-138), 340 (138-145),
341 (145-150);
Texture : SPARSELY TO MOD PHYRIC;
Structure : PYRITE OCCURS AS VEINS AND SCATTERED GRAINS IN PCE
333, SMEC FILLED VEINS OCCUR IN PCES 328+330+331+
333+334+336+338+340+341, BROWN OXIDE FILLING IN
VEINS (340+341), ZEOLITES FILL THIN VEINLETS IN
PCES 330+331+336+338;
Alteration : MOD;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 4;
Phenocrysts: PLAGIOCLASE
CLINOPYROXENE
OLIVINE
Replacement: PYRITE
SMECTITE
OXIDE
BROWN OXIDE;
ZEOLITE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 554.00
Core: 37 Top of Core Depth (m) : 552.50
Sect: 1 Top of Section Depth(m): 552.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
THIS UNIT IS NEARLY IDENTICAL TO UNIT 3;
Piece No. : PCE 342 (1-10), 343 (10-17), 344 (20-26),
345 (27-30), 346 (34-40), 347 (42-47), 348 (47-54);
Texture : MOD PHYRIC, FINE-GRAINED, PCE 344 BASALT BRECCIA(?)
FILLED WITH ZEOLITE+TRANSPARENT MINERAL+GREEN SMEC+
LIGHT GREEN (EPIDOTE GREEN) MINERAL, GLASS (SOME
ALTERED TO SMEC) IN PCES 342+346+349+354+356+357+
360, ABUNDANT GLASS RIMS AND ZONES PROBABLY
REPRESENTS A ZONE OF CORE PILLOWS
Structure : HIGHLY FRACTURED, ZEOLITES IN FRACTURES
IN PCES 343-346+348+349+351+352+355-
360, SMEC AND ZEOLITE ENCRUSTATION AND VEIN FILLINGS
ARE UBIQUITOUS AND ARE EASILY SEEN ON EVERY PCE
OF THE SECTION, LATER STAGED OXIDATION IN THE SAME
VEINS AS THE SMEC HAS COLORED THE CLAY BROWN TO
ORANGE BROWN IN MANY PCES;
Alteration : MOD
BROWN OXIDE STAINS IN PCES 342+343+347+348+355-
360;
Comments : LITHOSTRATIGRAPHIC UNIT 5;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: ZEOLITE
SMECTITE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 555.50
Core: 37 Top of Core Depth (m) : 552.50
Sect: 2 Top of Section Depth(m): 554.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
SAME AS SECTION 37-1 (SEE DESCRIPTION OF 37-2);
Piece No. : PCE 361 (0-7), 362 (9-13), 363 (14-20), 364 (20-25),
365 (26-28), 366 (30-35), 367 (35-37), 368 (38-43),
369 (44-50), 370 (51-59), 371 (61-64), 372 (60-70),
373 (72-78), 374 (80-84), 375 (83-87), 376 (87-89),
377 (90-97), 378 (99-102), 379 (102-105),
380 (105-107), 381 (107-110), 382 (111-120),
383 (121-130), 384 (131-134), 385 (134-136),
386 (136-140), 387 (141-150);
Texture : MOD PHYRIC, GLASSY RIM ON PCES 361+373+387, FINE TO
MEDIUM-GRAINED;
Structure : ZEOLITES IN FRACTURES IN PCES 361+362+369(?)+373+
374+377+378+382+383, OXIDATION IN VEINS IN PCES
361-363+369+370;
Alteration : MOD
OXIDATION IN VEINS IN PCES 361-363+369+370;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 5;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: ZEOLITE
SMECTITE
CALCITE
Leg : 70 Top/Bottom Interval(mm): 0/1250 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 556.75
Core: 37 Top of Core Depth (m) : 552.50
Sect: 3 Top of Section Depth(m): 555.50
LITHOLOGY: PLAG-OL-CPX SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 388 (1-3), 389 (2-3), 390 (6-13), 391 (14-21),
392 (25-29), 393 (33-35), 394 (35-41), 395 (43-45),
396 (43-45), 397 (46-55), 398 (57-59), 399 (60-62),
400 (62-67), 401 (65-70), 402 (71-73), 403 (76-82),
404 (85-88), 405 (90-95), 406 (98-105),
407 (108-125);
Texture : SPARSELY TO MOD PHYRIC, GLASS IN PCE 399, SMEC
COATINGS AND STAINS ON THE UNCUT SURFACES OF ALL
PCES;
Structure : ZEOLITE AND SMEC VEINS IN PCES 388-397+399+400+402+
407;
Alteration : MOD
SAME ALTERATION CHARACTERISTICS;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 5;
Phenocrysts: PLAGIOCLASE
OLIVINE
CLINOPYROXENE
Replacement: CALCITE
IN PCE 403;
ZEOLITE
SMECTITE
Leg : 70 Top/Bottom Interval(mm): 0/1440 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 562.94
Core: 38 Top of Core Depth (m) : 561.50
Sect: 1 Top of Section Depth(m): 561.50
LITHOLOGY: PLAG-OL-CPX MOD PHYRIC BASALT;
Piece No. : PCE 408 (1-5), 409 (1-5), 410 (5-7), 411 (8-15),
412 (16-20), 413 (21-28), 414 (28-34), 415 (34-41),
416 (42-47), 417 (50-56), 418 (57-78), 419 (80-88),
420 (89-95), 421 (97-100), 422 (103-106),
423 (108-116), 424 (117-121), 425 (121-124),
426 (125-130), 427 (129-133), 428 (133-137),
429 (137-142);
Texture : MOD PHYRIC, GLASSY RIMS IN PCES 408-412+417+419,
THESE GLASSY RIMS ARE ALWAYS PARTLY ALTERED BY DARK
GREEN SMEC(?), IN THE GLASSY ALTERED AREA WHITE
FIBROUS ZEOLITE (5x6MM) AND COLORLESS (PERFECTLY
TRANSPARENT) MINERAL;
Structure : OXIDATION AND SMEC IN VEINS IN ALMOST ALL THE PCES,
IN PCE 413 CALCITE VEIN, IN PCES 413+417 ZEOLITE IN
VEINS, IN PCE 420 PYRITE IN VEINS;
Alteration : MOD
OXIDATION IN VEINS IN ALMOST ALL PCES;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 5;
Phenocrysts: PLAGIOCLASE
OLIVINE
CLINOPYROXENE
Replacement: SMECTITE
CALCITE
PYRITE
ZEOLITE
Size(mm): 5 X 6
WHITE FIBROUS ZEOLITE IN GLASSY ALTERED AREA OF
PCE 411;
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 564.50
Core: 38 Top of Core Depth (m) : 561.50
Sect: 2 Top of Section Depth(m): 563.00
LITHOLOGY: PLAG-OL-CPX MOD PHYRIC BASALT;
Piece No. : PCE 430 (1-9), 431 (10-17), 432 (20-24),
433 (25-30), 434 (30-38), 435 (39-43), 436 (45-51),
437 (51-59), 438 (59-67), 439 (69-71), 440 (71-73),
441 (74-76), 442 (76-80), 443 (81-83), 444 (84-86),
445 (87-90), 446 (90-92), 447 (93-98), 448 (99-106),
449 (102-106), 450 (108-116), 451 (117-125),
452 (125-132), 453 (133-141), 454 (144-150);
Texture : MOD PHYRIC, GLASSY RIMS ON PCES 430+450+451, THIS
GLASS IS ALTERED IN DARK GREEN SMEC, PCE 433 HAS ON
ONE OF ITS SIDES A RIM 6-10MM THICK WHICH IS A KIND
OF BRECCIA, THE ELEMENTS OF THIS BRECCIA ARE
ANGULAR (1-5MM IN LENGTH) AND YELLOW GREEN AND
AMORPHOUS OR VERY-FINE CRYSTALLIZED AND TWO OF THEM
HAVE A DARK GREEN CORE, SOME OTHER ELEMENTS ARE
BASALT, THE CEMENT APPEAR TO BE ALTERED (BROWN,
GREEN);
Structure : ZEOLITE VEINS IN PCES 430+438+449, SOME CALCITE
IN VEINS IN PCES 432+436, OXIDATION IN VEINS IN PCES
432-437;
Alteration : MOD
OXIDATION IN VEINS OF PCES 432-437;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 5;
Phenocrysts: PLAGIOCLASE
OLIVINE
CLINOPYROXENE
Replacement: SMECTITE
DARK GREEN COLOR WHERE GLASSY RIMS IN PCES 430+
450+451 ARE ALTERED;
ZEOLITE
CALCITE
Leg : 70 Top/Bottom Interval(mm): 0/ 920 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 571.42
Core: 39 Top of Core Depth (m) : 570.50
Sect: 1 Top of Section Depth(m): 570.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 455 (0-2), 456 (2-9), 457 (9-14), 458 (15-20),
459 (22-30), 460 (31-40), 461 (40-44), 462 (45-57),
463 (59-65), 464 (67-78), 465 (80-83), 466 (84-86),
467 (87-89), 468 (89-92);
Texture : MOD PHYRIC, FINE TO MEDIUM-GRAINED, GLASSY RIMS IN
PCES 460+461;
Structure : DARK GREEN SMEC VEINS WELL DEVELOPED IN PCES 456-
458+462+464 (WITH BASALTIC MICROBRECCIA IN VEIN);
Alteration : SLIGHTLY
WHOLE ROCK APPEARS RELATIVELY FRESH LACKING
BROWNISH ALTERATION (OXIDATION) ZONE, NEITHER
PLAG NOR OL PHENOS SIGNIFICANTLY ALTERED;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 5;
Phenocrysts: PLAGIOCLASE
Size(mm): 1
GENERALLY SUBHEDRAL, SEVERAL PERCENT OF PHENOS ARE
IN 1MM SIZE RANGE;
OLIVINE
Size(mm): TO 1
GENERALLY EUHEDRAL, ABOUT 1% OF ROCK IS
DISTINCTIVE LARGE PHENOS (ABOUNT 1MM), REMAINING
SEVERAL PERCENT ONLY A FRACTION OF A MM IN SIZE;
Replacement: SMECTITE
THE DARK GREEN SMEC DOMINATES VEIN FILLINGS AND
FRAGMENT COATINGS;
Leg : 70 Top/Bottom Interval(mm): 920/1500 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 572.00
Core: 39 Top of Core Depth (m) : 570.50
Sect: 1 Top of Section Depth(m): 571.42
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT AND BASALTIC BRECCIA;
MASSIVE APPEARANCE;
Piece No. : PCE 469 (92-99), 470 (100-110), 471 (110-120),
472 (120-126), 473 (128-130), 474 (131-135),
475 (136-140), 476 (140-144), 477 (145-150);
Texture : SPARSELY PHYRIC, NO GLASS, ZONE OF BRECCIA FROM
110-135CM, FRAGMENTS FROM A FEW MM TO A FEW CM IN
SIZE, ANGULAR AND WITH BROWNISH ALTERATION COMMON,
MATRIX RICH IN SMEC, MEDIUM-GRAINED BASALT;
Structure : MASSIVE APPEARANCE, FRACTURES AND VEINS RARE;
Alteration : MOD;
Comments : LITHOSTRATIGRAPHIC UNIT 6, SOME BASALT BRECCIA
CLASTS HAVE UNIT 5 LITHOLOGY-SOME UNIT 6;
Phenocrysts: OLIVINE
PLAGIOCLASE
Leg : 70 Top/Bottom Interval(mm): 0/ 370 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 572.37
Core: 39 Top of Core Depth (m) : 570.50
Sect: 2 Top of Section Depth(m): 572.00
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
MASSIVE APPEARANCE;
Piece No. : PCE 478 (2-4), 479 (5-6), 480 (8-10), 481 (12-14),
482 (15-20), 483 (22-26), 484 (28-37);
Texture : SPARSELY PHYRIC, MEDIUM-GRAINED;
Structure : MASSIVE APPEARANCE, RARE SMEC VEINS;
Alteration : MOD
SOME DARK YELLOWISH BROWN ALTERATION;
Comments : CONTINUATION OF LITHOLOGICAL UNIT 6;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE ( RARE%)
Leg : 70 Top/Bottom Interval(mm): 380/1470 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 573.47
Core: 39 Top of Core Depth (m) : 570.50
Sect: 2 Top of Section Depth(m): 572.38
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCE 485 (39-40), 486 (42-43), 487 (45-57),
488 (57-65), 489 (66-77), 490 (76-83), 491 (85-95),
492 (96-105), 493 (105-115), 494 (115-126),
495 (127-133), 496 (135-147);
Texture : MOD PHYRIC, PCE 496 IS SPARSELY PHYRIC, NO GLASSY
RIMS;
Structure : RELATIVELY UNCOMMON VEINS HAVE DARK GREEN SMEC, ONE
CALCITE VEIN IN 493;
Alteration : FRESH
VERY LIMITED ALTERATION, OL ALMOST FRESH, NO
BROWNISH OR OTHER ALTERATION NEAR VEINS;
Comments : LITHOSTRATIGRAPHIC UNIT 7;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
CALCITE
ZEOLITE ( 0%)
Leg : 70 Top/Bottom Interval(mm): 0/ 650 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 574.15
Core: 39 Top of Core Depth (m) : 570.50
Sect: 3 Top of Section Depth(m): 573.50
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 497 (0-7), 498 (7-16), 499 (17-28), 500 (29-35),
501 (35-44), 502 (46-52), 503 (56-63);
Texture : SPARSELY TO MOD PHYRIC, FINE-GRAINED, NO GLASSY
RIMS;
Structure : FRACTURES FILLED WITH ZEOLITES AND SMECS;
Alteration : FRESH
ALMOST FRESH, OL IS ALTERED LITTLE OR NOT AT ALL,
NO VISIBLE ALTERATION CAN BE OBSERVED IN THE ZONES
NEXT TO FRACTURES;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 7, PCES 502+
503 HAVE NOT BEEN CUT, THEY HAVE BROKEN INTO TWO
PARTS ALONG FRACTURES;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: ZEOLITE
SMECTITE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 581.00
Core: 40 Top of Core Depth (m) : 579.50
Sect: 1 Top of Section Depth(m): 579.50
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 504 (1-8), 505 (10-19), 506 (19-27),
507 (26-41), 508 (40-50), 509 (47-55), 510 (55-63),
511 (66-70), 512 (70-72), 513 (74-76), 514 (75-77),
515 (78-86), 516 (85-92), 517 (91-101),
518 (102-116), 519 (105-121), 520 (122-130),
521 (130-135), 522 (133-135), 523 (135-143),
524 (144-150);
Texture : SPARSELY TO MOD PHYRIC;
Structure : MASSIVE BASALT SEQUENCE WHICH IS OFTEN FRACTURED,
FRACTURES FILLED WITH SECONDARY MINERALS (SMEC AND
OR ZEOLITE) OF WHITE TO LIGHT-GREEN OR DARK-GREEN
COLOR;
Alteration : IT APPEARS THAT NONE OR ONLY A LITTLE ALTERATION
OCCURS IN THE MASSIVE BASALT PCES NEXT TO THE
FRACTURES, OL IS SLIGHTLY(?) ALTERED;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 7;
Phenocrysts: PLAGIOCLASE
OLIVINE
SLIGHTLY ALTERED;
Replacement: SMECTITE
ZEOLITE
SMEC AND ZEOLITE WHITE TO LIGHT OR DARK GREEN
IN COLOR, SMEC IS SPRINKLED THROUGHOUT THE
GNDMASS;
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 582.50
Core: 40 Top of Core Depth (m) : 579.50
Sect: 2 Top of Section Depth(m): 581.00
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 526 (0-13), 527 (12-17), 528 (20-40),
529 (40-55), 530 (55-70), 531 (70-71), 532 (72-86),
533 (86-95), 534 (95-107), 535 (108-110),
536 (111-121), 537 (121-130), 538 (130-140),
539 (141-147);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM-GRAINED, HOMOGENEOUS
TEXTURE;
Structure : MASSIVE HOMOGENEOUS TEXTURE, A FEW FRACTURES ARE
PRESENT AND ARE LINED WITH LIGHT GREEN SMEC;
Alteration : SLIGHTLY
ALTERATION VERY LIMITED, NO ALTERATION AROUND
FRACTURE;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 7;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: CALCITE ( 0%)
ZEOLITE ( 0%)
Leg : 70 Top/Bottom Interval(mm): 0/1450 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 583.95
Core: 40 Top of Core Depth (m) : 579.50
Sect: 3 Top of Section Depth(m): 582.50
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 540 (0-9), 541 (9-10), 542 (10-19), 543 (19-30),
544 (30-35), 545 (33-40), 546 (39-50), 547 (49-51),
548 (51-66), 549 (65-75), 550 (74-84), 551 (82-88),
552 (88-95), 553 (96-103), 554 (103-108),
555 (103-111), 556 (112-120), 557 (120-130),
558 (130-136), 559 (136-145);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM-GRAINED;
Alteration : SLIGHTLY
PCES 540-555+559;
MOD
PCES 556-558, GNDMASS HAS GREEN ALTERATION
MINERALS (TOO SMALL TO IDENTIFY) WHICH DO NOT
APPEAR TO BE RELATED TO THE FRACTURES, MOST PCES
APPEAR TO BE ALMOST FRESH, PCES 556-558 HAVE
REDDISH BROWN ALTERATION ZONES WHICH ARE CONNECTED
FRACTURES (MORE OXIDZTION ALTERATION), FE.OXIDE
FORMATION;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 7;
Phenocrysts: PLAGIOCLASE
OLIVINE
BEGINNING WITH 556 THE AMOUNT OF OL BEGINS TO
INCREASE;
Replacement: SMECTITE
IN FRACTURES;
CALCITE
IN FRACTURES BUT LESS COMMON THAN SMEC;
FERROUS OXIDE
Leg : 70 Top/Bottom Interval(mm): 0/1410 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 585.41
Core: 40 Top of Core Depth (m) : 579.50
Sect: 4 Top of Section Depth(m): 584.00
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
INDENTICAL IN ALL CHARACTERISTICS TO PREVIOUS
SECTION;
Piece No. : PCE 560 (0-7), 561 (7-15), 562 (16-24), 563 (25-35),
564 (36-43), 565 (46-55), 566 (56-66), 567 (66-80),
568 (80-94), 569 (93-100), 570 (102-105),
571 (107-112), 572 (110-117), 573 (117-125),
574 (126-140);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM-GRAINED;
Structure : MASSIVE, A LIGHT GREEN SMEC VEIN IN PCE 563
CONTAINS A BLEB OF SULFIDE (29CM) AND SOME
DISSEMINATED SINGLE GRAINS-THE SULFIDE APPEARS TO
BE PYRITE, SMALL BLEB OR TWO OF CALCITE ON OUTER
SURFACE OF PCE 563;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 7;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: CALCITE
SMECTITE
SULFIDE
Leg : 70 Top/Bottom Interval(mm): 0/ 450 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 585.95
Core: 40 Top of Core Depth (m) : 579.50
Sect: 5 Top of Section Depth(m): 585.50
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
IDENTICAL TO PREVIOUS SECTION;
Piece No. : PCE 575 (0-20), 576 (23-35), 577 (37-44);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM-GRAINED;
Structure : MASSIVE;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 7;
Phenocrysts: PLAGIOCLASE
OLIVINE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 585.50
Core: 41 Top of Core Depth (m) : 584.00
Sect: 1 Top of Section Depth(m): 584.00
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
IDENTICAL TO PREVIOUS SECTION;
Piece No. : PCE 578 (0-7), 579 (9-20), 580 (20-32), 581 (31-35),
582 (37-44), 583 (45-50), 584 (53-56),
585 (59-61), 586 (62-70), 587 (70-73), 588 (73-75),
589 (76-85 ), 590 (88-96), 591 (95-101),
592 (103-110), 593 (110-117), 594 (119-130),
595 (130-137), 596 (137-141), 597 (141-149);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM-GRAINED;
Structure : MASSIVE APPEARANCE, A FEW FRACTURES OCCUR WITH
THIN COATING OF LIGHT GREEN SMEC;
Alteration : FRESH
NO ZEOLITES, NO OBVIOUS ALTERATION;
Comments : CONTINUATION OF UNIT 7;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
ZEOLITE ( 0%)
Leg : 70 Top/Bottom Interval(mm): 0/1470 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 586.97
Core: 41 Top of Core Depth (m) : 584.00
Sect: 2 Top of Section Depth(m): 585.50
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 598 (0-10), 599 (12-25), 600 (25-35),
601 (36-39), 602 (38-47), 603 (47-63),
604 (62-70), 605 (70-76), 606 (76-85),
607 (87-92), 608 (95-103), 609 (103-112),
610 (113-120), 611 (123-130), 612 (130-140),
613 (145-147);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM-GRAINED;
Structure : ALTERATION OCCURS AT FRACTURES (FORMATION OF SMEC
AND CALCITE);
Alteration : FRESH
RELATIVELY FRESH, NO SIGNIFICANT ALTERATION OCCURS
IN THE ZONES NEXT TO THE FRACTURES;
Comments : UNDER THE MICROSCOPE (X12) TRACES OF SMEC CAN BE
OBSERVED IN THE GNDMASS OF MOST OF THE SAMPLES,
CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 7;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
CALCITE
Leg : 70 Top/Bottom Interval(mm): 0/1480 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 588.48
Core: 41 Top of Core Depth (m) : 584.00
Sect: 3 Top of Section Depth(m): 587.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 614 (0-12), 615 (12-22), 616 (23-31),
617 (33-40), 618 (42-57), 619 (58-67), 620 (68-75),
621 (76-85), 622 (87-97), 623 (96-103),
624 (101-110), 625 (110-116), 626 (119-125),
627 (127-136), 628 (139-148);
Texture : MOD PHYRIC, MEDIUM-GRAINED, ROCK BECOMES
PROGRESSIVELY FINER GRAINED TOWARDS THE BASE
OF THE SECTION (WHILE THE OL AND PLAG PHENOS
REMAIN THE SAME SIZE AS IN PREVIOUS SECTIONS),
IN PCE 628 DARK GREEN SMEC POSSIBLY REPRESENTING
ALTERED GLASS OCCURS ALONG THE BOTTOM CORNER AND
SIDE;
Structure : IN PCES 616 AND DOWN FRACTURES ARE MORE COMMON,
GREEN SMEC VEINS ARE PRESENT IN PCES (616+622+628),
PYRITE PRESENT IN GREEN SMEC VEINS IN PCES 622+625+
628;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 7, THE
DARK GREEN SMEC WHICH OCCURS IN PCE 628 TOGETHER
WITH THE DECREASE IN GRAIN SIZE OF ROCK FROM PCE 616
TO 628 SUGGESTS THAT PCE 628 REPRESENTS THE BASE
OF THE THICK MASSIVE FLOW OF LITHOSTRATIGRAPHIC
UNIT 7;
Phenocrysts: PLAGIOCLASE
OLIVINE
THE ABUNDANCE OF OL PHENOS BETWEEN PCES 616 AND
628 MAY BE SLIGHTLY HIGHER THAN IN PREVIOUS
SECTIONS;
Replacement: SMECTITE
GREEN SMEC;
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/1360 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 589.86
Core: 41 Top of Core Depth (m) : 584.00
Sect: 4 Top of Section Depth(m): 588.50
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 629 (3-7), 630 (9-13), 631 (15-20),
632 (22-30), 633 (31-37), 634 (40-44),
635 (46-63), 636 (63-80), 637 (81-85), 638 (81-85),
639 (95-101), 640 (103-130);
Texture : SPARSELY TO MOD PHYRIC, FINE-GRAINED, BEGINNING
WITH PCE 628 (SECTION 3) ALMOST COMPLETELY
ALTERED GLASSY PARTS (RIMS) ARE OBSERVED (PCE 629-
631);
Structure : ALTERATION IN FRACTURES SEEM TO GO FURTHER INTO
THE SAMPLES;
Alteration : MOD
ALTERATION BECOMES MORE INTENSE WITH THE
FORMATION OF SMEC+PYRITE+FE.OXIDES
(PCES 632-638);
Comments : END OF LITHOLOGICAL UNIT 7 AT PCE 633 OR 638, THE
END OF LITHOLOGICAL UNIT 7 CAN NOT BE DEFINED
EXACTLY, THE SAMPLES HAVING ALTERED GLASS ARE
PRESUMABLY THE END OF THE UNIT BUT CAN ALSO BE
THE TOP OF THE NEXT UNIT, PCE FOUND STUCK IN LINER-
NO ORIENTATION OR SEQUENCE;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
ZEOLITE
ID UNCERTAIN;
PYRITE
FERROUS MN OXIDE
Leg : 70 Top/Bottom Interval(mm): 0/1400 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 594.40
Core: 42 Top of Core Depth (m) : 593.00
Sect: 1 Top of Section Depth(m): 593.00
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 641 (1-5), 642 (7-14), 643 (16-20),
644 (19-20), 645 (23-28), 646 (31-40), 647 (42-52),
648 (55-60), 649 (62-65), 650 (66-75), 651 (77-85),
652 (86-93), 653 (95-102), 654 (105-109),
655 (111-115), 656 (115-121), 657 (125-130),
658 (131-139);
Texture : SPARSELY PHYRIC TO VERY SPARSELY PHYRIC, MEDIUM-
GRAINED, BRECCIAS OCCUR MORE OFTEN HERE THAN IN
UNIT 7, AN AREA OF BRECCIA (TECTONIC OR INTRUSIVE?)
OCCURS IN PCES 653 AND 656, THE MATRIX OF LITHIC
FRAGMENTS IS SMEC;
Structure : FRACTURES OCCUR MORE OFTEN HERE THAN IN UNIT 7, THE
FRACTURED PATTERN OF UNIT 8 IS INTERMEDIATE TO THE
VERY FRATURED SAMPLES IN THE PILLOW SECTION (CORED
IN CORES 32+33+34) AND THE MASSIVE FLOW COMPRISING
UNIT 7, SMEC FILLED VEINS AT PCES 642+645+647+659+
650-652+655;
Alteration : MOD;
Comments : LITHOSTRATIGRAPHIC UNIT 8 BEGINS AT END OF CORE 41,
IT IS WELL EXPRESSED IN THIS CORE AND CONTINUES
THROUGH BOTH SECTIONS;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Vesicles : Size(mm): Percent: 0
Leg : 70 Top/Bottom Interval(mm): 0/1060 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 595.56
Core: 42 Top of Core Depth (m) : 593.00
Sect: 2 Top of Section Depth(m): 594.50
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCE 659 (2-5), 660 (8-10), 661 (14-21), 662 (25-28),
663 (32-38), 664 (40-45), 665 (45-50), 666 (50-55),
667 (55-60), 668 (62-78), 669 (80-87), 670 (89-105);
Texture : SPARSELY PHYRIC, MEDIUM TO COARSE-GRAINED;
Structure : SMEC IN VEINS IN PCES 660+665-667+669;
Alteration : MOD
EXTERIORS OF PCES ARE COMMONLY TINTED GREEN DUE
TO SMEC ALTERATION;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 8, THE
BOTTOM THIRD OF SECTION IS DOMINATED BY DRILL
GRAVEL OF UNCERTAIN STRATIGRAPHY;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Leg : 70 Top/Bottom Interval(mm): 0/1400 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 603.90
Core: 43 Top of Core Depth (m) : 602.50
Sect: 1 Top of Section Depth(m): 602.50
LITHOLOGY: PLAG-CPX SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 671 (2-8), 672 (12-14), 673 (16-20),
674 (23-27), 675 (30-35), 676 (37-45), 677 (47-53),
678 (55-61), 679 (61-70), 680 (74-81), 681 (82-87),
682 (90-97), 683 (100-102), 684 (104-106),
685 (107-110), 686 (112-116), 687 (116-120),
688 (120-121), 689 (121-126), 690 (127-130),
691 (131-134), 692 (135-137), 693 (136-140);
Texture : SPARSELY TO MOD PHYRIC;
Structure : SLIGHTLY FEWER FRACTURES, SMEC IN VEINS IN PCES
687+680+677;
Alteration : MOD
GENERALLY FRESHER APPEARANCE OF BASALT;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 8, DRILL
GRAVEL BETWEEN 90-140CM;
Phenocrysts: PLAGIOCLASE
CLINOPYROXENE
Replacement: SMECTITE
IN VEINS AND AFTER GLASS IN PCE 673, PURE SMEC IN
PCE 672;
Leg : 70 Top/Bottom Interval(mm): 0/ 540 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 604.54
Core: 43 Top of Core Depth (m) : 602.50
Sect: 2 Top of Section Depth(m): 604.00
LITHOLOGY: PLAG-CPX-OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 694 (1-11), 695 (13-22), 696A (24-30),
696B (32-41), 697 (42-47), 698 (47-52);
Texture : SPARSELY TO MOD PHYRIC;
Structure : SMEC IN VEINS IN PCES 695+696A+697(EDGE)+698(EDGE);
Alteration : MOD
SLIGHT BROWNISH-YELLOW STAINING ON UNCUT SURFACES;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 8;
Phenocrysts: PLAGIOCLASE
CLINOPYROXENE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
Leg : 70 Top/Bottom Interval(mm): 0/ 920 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 611.92
Core: 44 Top of Core Depth (m) : 611.00
Sect: 1 Top of Section Depth(m): 611.00
LITHOLOGY: PLAG-CPX SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 699 (1-8), 700 (11-19), 701 (20-30),
702 (31-39), 703 (40-45), 704 (45-50), 705 (51-59),
706 (61-66), 707 (69-76), 708 (78-84), 709 (85-90),
710 (90-92);
Texture : SPARSELY TO MOD PHYRIC, APPEARANCE OF GLASSY MARGINS
ON PCES 699+700+706, INCREASE IN PHENO CONTENT
TOWARD BASE OF FLOW ESPECIALLY IN COOLING UNIT(?)
BETWEEN PCES 700 AND 705;
Alteration : MOD
Comments : THE GLASSY MARGINS PERHAPS INDICATES THAT A
SEPARATE COOLING UNIT EXISTS FROM PCES 700 TO 705,
THE GLASS IS NOT PERVASIVE AND MAY ONLY BE PILLOW
OR FLOW MARGIN EDGES, CONTINUATION OF LITHOLOGICAL
UNIT 8;
Phenocrysts: PLAGIOCLASE
CLINOPYROXENE
Leg : 70 Top/Bottom Interval(mm): 930/1320 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 612.32
Core: 44 Top of Core Depth (m) : 611.00
Sect: 1 Top of Section Depth(m): 611.93
LITHOLOGY: OL GLOMEROPHYRIC BASALT;
Piece No. : PCE 711 (93-96), 712 (97-102), 713 (103-106),
714 (106-109), 715 (110-122), 716 (125-132);
Texture : GLOMEROPHYRIC FINE TO MEDIUM-GRAINED;
Structure : SMALL CRACKS AND FRACTURES COATED BUT NOT FILLED
WITH SMEC;
Alteration : MOD
Comments : LITHOLOGIC UNIT 9;
Phenocrysts: OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
Leg : 70 Top/Bottom Interval(mm): 1330/1400 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 612.40
Core: 44 Top of Core Depth (m) : 611.00
Sect: 1 Top of Section Depth(m): 612.33
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 717 (132-139);
Texture : MOD PHYRIC, ZONES MAY BE SPARSELY GLOMEROPHYRIC,
MEDIUM-GRAINED;
Comments : LITHOLOGIC UNIT 10;
Phenocrysts: OLIVINE
PLAGIOCLASE
Leg : 70 Top/Bottom Interval(mm): 0/1080 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 613.58
Core: 44 Top of Core Depth (m) : 611.00
Sect: 2 Top of Section Depth(m): 612.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 718 (1-8), 719 (9-17), 720 (18-28),
721 (30-40), 722 (44-50), 723 (51-56),
724 (57-60), 725 (61-70), 726 (70-78),
727 (81-86), 728 (87-95), 729 (96-100),
730 (103-106);
Texture : MOD PHYRIC, SLIGHTLY MORE GLOMEROPHYRIC AND LESS
OL PHYRIC THAN PREVIOUS SECTION, A BRECCIA ZONE
(FAULTED OR INTRUSIVE RELATED) IS SEEN IN PCES
721-724-THE MATRIX IS SMEC AND BROKEN CRYSTALS
WHILE LITHOLOGIC FRAGMENTS ARE OF THE SAME UNIT AS
ABOVE AND BELOW BRECCIA;
Structure : SMEC VEINS ENCRUSTS IN PCES 719+720+723(+ZEOLITE)+
726(SMEC+ZEOLITE)+727(+ZEOLITE)+728+729(+ZEOLITE);
Alteration : MOD;
Comments : CONTINUATION OF LITHOLOGIC UNIT 10;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
ZEOLITE
Leg : 70 Top/Bottom Interval(mm): 0/1430 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 621.43
Core: 45 Top of Core Depth (m) : 620.00
Sect: 1 Top of Section Depth(m): 620.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT AND BRECCIA;
Piece No. : PCE 731 (1-6), 732 (9-15), 733 (17-25),
734 (30-37), 735 (40-45), 736 (45-50), 737 (51-57),
738 (59-63), 739 (65-69), 740 (70-73), 741 (75-80),
742 (83-90), 743 (92-95), 744 (95-101),
745 (102-105), 746 (107-114), 747 (116-125),
748 (126-135), 749 (137-143);
Texture : BASALT IS SIMILAR TO UNIT 10 BUT IT IS INTERBEDDED
WITH BRECCIA AND HAS MORE COMMON GLASSY RIMS,
INTERBEDDED BASALT BRECCIA WITH THEIR MORE MASSIVE
UNITS OF THE SAME NATURE AS THE INTERBEDDED MASSIVE
BASALTS, GLASSY RIMS PRESENT IN A FEW SAMPLES MAY
INDICATE PILLOW SEQUENCE SINCE THE RIMS ARE CURVED
RANDOMLY ORIENTED ON THE PCES, MOD PHYRIC, ZONES OF
GLOMEROCRYST ACCUMULATION, MATRIX OF BRECCIA IS
SMEC AND GLASS ON PCES 735+746+748 HAS BEEN PARTLY
ALTERED TO SMEC, SMALL SULFIDE ACCUMULATES IN
BRECCIA MATRIX IS COMMON IN PCES 733+741+736,
BRECCIA IS EVIDENT IN PCES 733+736+741+747+749,
GLOMEROPHYRIC ZONE IN MASSIVE (THICK FLOW?) IS SEEN
IN PCES 743-745;
Alteration : MOD
ALTERATION MORE COMMON (SMEC);
Comments : LITHOLOGICAL UNIT 11;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Leg : 70 Top/Bottom Interval(mm): 300/ 750 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 622.25
Core: 45 Top of Core Depth (m) : 620.00
Sect: 2 Top of Section Depth(m): 621.80
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 754 (32-40), 755 (40-45), 756 (48-55),
758 (61-63), 760 (69-75);
Texture : BRECCIA;
Comments : CONTINUATION OF LITHOLOGIC UNIT 11, THERE IS
POSSIBLY THE BEGINNING OF UNIT 12 BELOW THE BRECCIA
(756);
Leg : 70 Top/Bottom Interval(mm): 0/1200 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 622.70
Core: 45 Top of Core Depth (m) : 620.00
Sect: 2 Top of Section Depth(m): 621.50
LITHOLOGY: PLAG-OL PHYRIC BASALT;
Piece No. : PCE 750 (2-7), 751 (10-18), 752 (19-24),
753 (25-30), 757 (57-60), 759 (64-65), 761 (77-80),
762 (83-85), 763 (80-82), 764 (88-100),
765 (102-105), 766 (106-109), 767 (112-115),
768 (117-120);
Texture : PHYRIC, MEDIUM-GRAINED, THE BASALT IS MORE FINE-
GRAINED BELOW BRECCIA AND IS SIMILAR TO THE BASALT
FOUND IN CORE 46, GLASS RIMS IN PCES 750+752+766;
Structure : FRACTURED;
Comments : CONTINUATION OF LITHOLOGIC UNIT 11;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
SULFIDE
IN PCE 751;
Leg : 70 Top/Bottom Interval(mm): 0/1450 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 630.45
Core: 46 Top of Core Depth (m) : 629.00
Sect: 1 Top of Section Depth(m): 629.00
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 769 (0-7), 770 (9-15), 771 (15-36),
772 (36-60), 773 (60-66), 774 (70-74), 775 (75-88),
776 (89-99), 777 (100-105), 778 (107-115),
779 (118-125), 780 (126-136), 781 (137-145);
Texture : SPARSELY PHYRIC, FINE TO MEDIUM-GRAINED, GLASS AT
EDGE OF PCES 777(?) AND 778;
Structure : SMEC OCCURS IN FRACTURES, ON PCE 777 PROBABLE GLASS
REPLACEMENT OR VEIN FORMATION OF LIGHT GREEN TO
DARK GREEN TO GREENISH BLACK SMEC;
Alteration : FRESH
SAMPLES SEEM TO BE FRESH, ZONES SURROUNDING
FRACTURES DO NOT SEEM TO BE INFLUENCED BY
ALTERATION IN FRACTURES;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 12;
Phenocrysts: OLIVINE
PROBABLY SLIGHTLY ALTERED;
PLAGIOCLASE
Replacement: SMECTITE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 632.00
Core: 46 Top of Core Depth (m) : 629.00
Sect: 2 Top of Section Depth(m): 630.50
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCE 782 (0-28), 783 (30-41), 784 (43-45),
785 (45-47), 786 (48-53), 787 (54-61), 788 (63-71),
789 (74-82), 790 (84-125), 791 (127-135),
792 (136-150);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : FRACTURES COMMON AND FILLED WITH DARK GREEN SMEC;
Alteration : SLIGHTLY
VERY LITTLE OBVIOUS ALTERATION, NO ZEOLITES OR
CALCITE;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 12;
Phenocrysts: OLIVINE
Size(mm): <0.5
MOD ABUNDANT, MOSTLY <0.5MM BUT VERY OCCASIONALLY
1MM;
PLAGIOCLASE
Size(mm): <1
SPARSE TO SCARCE;
Replacement: SMECTITE
Leg : 70 Top/Bottom Interval(mm): 0/1100 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 633.10
Core: 46 Top of Core Depth (m) : 629.00
Sect: 3 Top of Section Depth(m): 632.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 793 (0-9), 794 (10-16), 795 (16-25),
796 (25-32), 797 (34-44), 798 (46-53), 799 (54-60),
800 (63-70), 801 (72-80), 802 (81-100),
803 (102-110);
Texture : MOD PHYRIC, MED-GRAINED, PCE 803 HAS GLASSY RIM
(SUB-VERTICAL);
Structure : FRACTURES ARE COMMON AND FILLED WITH GREEN SMEC
(AS IN PCE 800), FRACTURES ARE NORMAL TO GLASSY RIM;
Alteration : SLIGHTLY
VERY LITTLE OBVIOUS ALTERATION, NO ZEOLITES, PCE
803 HAS A 2CM WIDE CONCENTRIC ZONE OF SLIGHTLY
DARKER GRAY ALTERATION;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 12;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
ZEOLITE ( 0%)
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 639.50
Core: 47 Top of Core Depth (m) : 638.00
Sect: 1 Top of Section Depth(m): 638.00
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCE 804 (0-10), 805 (11-17), 806 (17-26),
807 (28-39), 808 (40-46), 809 (47-54), 810 (53-56),
811 (58-70), 812 (70-75), 813 (74-80), 814 (85-93),
815 (93-105), 816 (107-110), 817 (106-110),
818 (112-120), 819 (120-124), 820 (125-140),
821 (140-145), 822 (148-150);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : VERY FRACTURED, FRACTURES ARE FILLED WITH GREEN TO
DARK-GREEN SMEC, PYRITE OCCURS AS SMALL PATCHES
(<0.5MM DIAMETER) IN SOME OF THE FRACTURES IN PCES
(805-809+814+815+818);
Alteration : ALTERATION OCCURS MAINLY IN THE FRACTURES;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 12;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 641.00
Core: 47 Top of Core Depth (m) : 638.00
Sect: 2 Top of Section Depth(m): 639.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 823 (1-13), 824 (16-26), 825 (25-31),
826 (33-42), 827 (43-47), 828 (50-56), 829 (56-59),
830 (61-72), 831 (74-81), 832 (83-95), 833 (96-107),
834 (110-120), 835 (124-137), 836 (139-150);
Texture : MOD PHYRIC, PCES 823-825+831-835 ARE MEDIUM-GRAINED-
TYPICAL OF UNIT 12 BASALT, PCES 826-830 ARE FINE-
GRAINED WITH ABUNDANT GLASSY RIM MATERIAL
(FREQUENTLY ALTERED TO GREEN SMEC) (UNIT 12A?),
PCE 827 IS UNUSUAL IN THAT IT SHOWS A CONTACT
BETWEEN GLASSY-RIMMED FINE-GRAINED BASALT MEDIUM-
GRAINED BASALT TYPICAL OF UNIT 12, THE GLASSY RIM
CONTINUES AROUND THE MEDIUM-GRAINED PCE SUGGESTING
THE LATTER IS AN INCLUSIVE FRAGMENT WITHIN A FINE-
GRAINED FLOW;
Structure : FRACTURES CONTAIN GREEN SMEC;
Alteration : SLIGHTLY
VERY LITTLE ALTERATION, NO ZEOLITES OR CALCITE;
Comments : PCES 826-830 MAY BE ANOTHER UNIT-UNIT 12A,
REMAINING PORTION CONTINUATION OF LITHOSTRATIGRAPHIC
UNIT 12;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
GREEN SMEC;
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 642.50
Core: 47 Top of Core Depth (m) : 638.00
Sect: 3 Top of Section Depth(m): 641.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 837 (0-14), 838 (16-24), 839 (24-32),
840 (35-45), 841 (46-49), 842 (52-62), 843 (64-69),
844 (70-79), 845 (81-91), 846 (94-97),
847 (101-107), 848 (110-120), 849 (120-150);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : VERY FRACTURED AND FILLED WITH GREEN TO DARK GREEN
SMEC, PYRITE OCCURS IN NEARLY ALL FRACTURES;
Alteration : FRESH;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 12B;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
GREEN TO DARK GREEN SMEC;
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/1050 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 643.55
Core: 47 Top of Core Depth (m) : 638.00
Sect: 4 Top of Section Depth(m): 642.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCES 850 (1-7), 851 (9-21), 852 (23-32),
853 (34-45), 854 (47-55), 855 (55-65), 856 (65-72),
857 (74-86), 858 (86-90);
Texture : MOD PHYRIC, MED-GRAINED;
Structure : MASSIVE APPEARANCE, FRACTURES SPARSE, GREEN SMEC
COATS FRACTURE SURFACES, NOTABLE PYRITE ON UNCUT
FRACTURE SURFACES OF 850+854+855, ASSOCIATED WITH
SMEC COATINGS;
Alteration : SLIGHTLY
VERY LITTLE ALTERATION, NO ZEOLITE;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT 12,
NO PCE 859;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
PYRITE
ZEOLITE ( 0%)
Leg : 70 Top/Bottom Interval(mm): 0/ 670 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 647.67
Core: 48 Top of Core Depth (m) : 647.00
Sect: 1 Top of Section Depth(m): 647.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 860 (0-10), 861 (11-18), 862 (21-29),
863 (31-34), 864 (37-50), 865 (53-60), 866 (62-66);
Texture : MOD PHYRIC, MED-GRAINED;
Structure : MODERATELY FRACTURED WITH GREEN SMEC COATING
FRACTURES, MASSIVE APPEARANCE, PYRITE OCCURS IN
FRACTURES IN PCES 865+861+860;
Alteration : FRESH
NO OBVIOUS ALTERATION;
Comments : CONTINUATION AND END OF LITHOSTRATIGRAPHIC UNIT 12,
THERE IS NO PCE 859;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
PYRITE
Leg : 70 Top/Bottom Interval(mm): 680/1350 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 648.35
Core: 48 Top of Core Depth (m) : 647.00
Sect: 1 Top of Section Depth(m): 647.68
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 867 (68-80), 868 (82-86), 869 (88-91),
870 (95-104), 871 (105-115), 872 (116-122),
873 (125-128), 874 (129-133);
Texture : ABUNDANT 1MM-1CM SIZED ANGULAR TO SUB-ANGULAR
CLASTS IN A MATRIX OF GREEN SMEC AND GLASS, PCES
868+870 CONTAIN PART OF LARGER CLASTS MORE THAN 3CM
IN SIZE;
Comments : BRECCIA MAY BE RELATED TO BORDERS OF ENCLOSING
FLOWS;
LITHOSTRATIGRAPHIC UNIT 13;
Leg : 70 Top/Bottom Interval(mm): 1350/1500 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 648.50
Core: 48 Top of Core Depth (m) : 647.00
Sect: 1 Top of Section Depth(m): 648.35
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
VERY SIMILAR TO THE UNIT 12 BASALT;
Piece No. : PCE 875 (135-150);
Texture : MOD PHYRIC, MED-GRAINED;
Comments : LITHOSTRATIGRAPHIC UNIT 14;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: PYRITE
PYRITE COMMON;
Leg : 70 Top/Bottom Interval(mm): 0/ 970 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 649.47
Core: 48 Top of Core Depth (m) : 647.00
Sect: 2 Top of Section Depth(m): 648.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCES 876 (0-11), 877 (14-20), 878 (21-29),
879 (29-35), 880 (35-42), 881 (41-47), 882 (50-52),
883 (55-69), 884 (71-80), 885 (79-85), 886 (87-97);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : MASSIVE, SMALL FRACTURES WITH SMEC AND PYRITE AS IN
CORES 47 AND 46;
Alteration : SLIGHTLY
ALTERATION OCCURS MAINLY IN SMALL FRACTURES;
Comments : CONTINUATION OF LITHOLOGIC UNIT 14;
Phenocrysts: PLAGIOCLASE
Replacement: SMECTITE
Minerals Replaced: OL
PYRITE
Leg : 70 Top/Bottom Interval(mm): 1000/1490 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 649.99
Core: 48 Top of Core Depth (m) : 647.00
Sect: 2 Top of Section Depth(m): 649.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCES 887 (100-109), 888 (111-119), 889 (121-125),
890 (128-133), 891 (135-137), 892 (140-148);
Texture : MOD PHYRIC, FINE-GRAINED, GLASSY RIMS IN PCES 888+
889+891;
Structure : HIGHLY FRACTURED (MORE FRACTURED THAN ABOVE), RED-
BROWN FE.OXIDES IN FRACTURES, SMEC OCCURS IN
FRACTURES;
Alteration : MOD
THE ALTERATION IS SLIGHTLY OXIDATIVE AS
DOCUMENTED BY RED-BROWN FE.OXIDES IN FRACTURES
AND REPLACING OL, PART OF GLASSY RIM REPLACED BY
SMEC;
Comments : QUESTION: IS THE STRONGLY FRACTURED PART A NEW UNIT
OR IS IT A CHILLED BOTTOM OF THE MASSIVE UNIT WHICH
THEREFORE HAS GLASS AND GIVES ACCESS TO SEAWATER?;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: FERROUS MN OXIDE
Minerals Replaced: OL
RED BROWN IN COLOR;
SMECTITE
Minerals Replaced: OL
AT END;
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 651.50
Core: 48 Top of Core Depth (m) : 647.00
Sect: 3 Top of Section Depth(m): 650.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 893 (0-11), 894 (12-19), 895 (20-27),
896 (30-35), 897 (36-42), 898 (43-51), 899 (53-60),
900 (62-69), 901 (71-77), 902 (79-87), 903 (88-94),
904 (95-105), 905 (106-111), 906 (113-120),
907 (121-129), 908 (131-140), 909 (141-150);
Texture : MOD PHYRIC, MEDIUM AND FINE-GRAINED, THIS UNIT IS
RATHER HETEROGENEOUS INDICATED BY ALTERNATING
LESS FRACTURED MEDIUM-GRAINED BASALT WITHOUT GLASS
AND FINER GRAINED VERY FRACTURED BASALT WITH SOME
GLASSY MATERIAL, GLASS IS COMMON AROUND ABUNDANT
FRACTURES-AS IN PCES 905-909, GLASS ALSO IN THE
FRAGMENTS OF 893;
Structure : LESS FRACTURED BASALT ALTERNATES WITH VERY FRACTURED
BASALT, MORE MASSIVE AND LESS FRACTURED AND
GLASSLESS BASALT OCCURS IN PCES 894-904, GREEN SMEC
WITH PYRITE IN VEINLETS AND FRACTURES IN PCES 897+
900+902+904+909, MINOR CALCITE IN VEINS IN 907+908;
Comments : CONTINUATION OF LITHOLOGICAL UNIT 14 FROM SECTION
48-2;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: ZEOLITE
NOTABLE ZEOLITE (XRD SAMPLE) IN PCE 894, ID
UNCERTAIN;
SMECTITE
GREEN IN COLOR;
PYRITE
CALCITE
MINOR CALCITE IN VEINS;
Leg : 70 Top/Bottom Interval(mm): 0/ 500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 652.00
Core: 48 Top of Core Depth (m) : 647.00
Sect: 4 Top of Section Depth(m): 651.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 910 (0-10), 911 (14-17), 912 (22-30),
913 (32-40), 914 (42-47);
Texture : MOD PHYRIC, FINE-GRAINED, GLASSY RIMS ARE PRESENT
AND ARE PARTLY ALTERED TO SMEC;
Structure : HIGHLY FRACTURED AS IN SECTIONS 2 AND 3, FRACTURES
ARE FILLED WITH SMEC;
Alteration : MOD
NON-OXIDATIVE;
Comments : CONTINUATION OF SECTION 3;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
PYRITE
IN PCE 910;
Leg : 70 Top/Bottom Interval(mm): 0/1450 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 657.45
Core: 49 Top of Core Depth (m) : 656.00
Sect: 1 Top of Section Depth(m): 656.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT AND BASALTIC BRECCIA;
Piece No. : PCE 915 (1-8), 916 (10-13), 917 (16-21),
918 (22-26), 919 (27-32), 920 (33-40), 921 (43-48),
922 (50-57), 923 (58-65), 924 (68-75), 925 (76-84),
926 (86-84), 927 (95-100), 928 (102-106),
929 (110-114), 930 (116-120), 931 (122-125),
932 (126-129), 933 (131-136), 934 (138-145);
Texture : MOD PHYRIC, ENTIRE SECTION IS MORE OR LESS
BRECCIATED, PCES THAT ARE DOMINANTLY BRECCIA ARE
917-919+924+925+927-931+932+933, THE BRECCIA MATRIX
WAS ONCE GLASS BUT IS LARGELY REPLACED BY SMEC,
GLASS AREAS REMAIN ON PCES 917+918+923+925-927+929+
933+934,OTHER PCES ARE OFTEN COOLED BY SMEC (BRECCIA
MATRIX) AND MAY BE LARGE LITHIC FRAGMENTS BROKEN
OUT OF THE MATRIX, FINE TO MEDIUM-GRAINED BASALT;
Structure : SULFIDE PLATELETS COAT A SMALL PORTION OF A
FRACTURE SURFACE IN PCE 934;
Alteration : MOD;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
SULFIDE
Leg : 70 Top/Bottom Interval(mm): 0/1400 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 658.90
Core: 49 Top of Core Depth (m) : 656.00
Sect: 2 Top of Section Depth(m): 657.50
LITHOLOGY: BASALTIC BRECCIA AND PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 935 (1-7), 936 (8-12), 937 (15-22),
938 (24-31), 939 (31-36), 940 (36-46), 941 (47-52),
942 (56-62), 943 (64-70), 944 (71-75), 945 (76-80),
946 (83-90), 947 (93-102), 948 (103-107),
949 (110-124), 950 (125-132), 951 (133-138);
Texture : ENTIRE SECTION IS MOSTLY BRECCIATED, THE MORE
MASSIVE PCES OF BASALT ARE STILL PLAG-OL PHYRIC,
SMEC REPLACES THE GLASS MATRIX OF MOST BRECCIA
PCES AND IS ACCOMPANIED BY ZEOLITE IN PCES 937+938,
SULFIDE FILLS MATRIX WITH SMEC IN PCE 944, GLASS
OCCURS ON PCES 935-938+940-942+944+945+950+951,
UNCUT SURFACES ARE GREEN COLORED BY FINE-GRAINED
SMEC COATINGS AND IMPREGNATIONS;
Structure : SMEC VEINS OCCUR IN PCES 947+948+950 AND ARE 2MM
THICK;
Comments : CONTINUATION OF THE UNIT IN SECTION 1, DRILL
GRAVEL OF UNDETERMINED STRATIGRAPHY OCCURS AT
PCE 949;
Phenocrysts: PLAGIOCLASE
OLIVINE
IN MORE MASSIVE PCES OF BASALT;
Replacement: SMECTITE ( OL%)
SULFIDE
Leg : 70 Top/Bottom Interval(mm): 0/ 600 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 659.60
Core: 49 Top of Core Depth (m) : 656.00
Sect: 3 Top of Section Depth(m): 659.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
THIS BASALT IS THE SAME MATERIAL AS THE FRAGMENTS
OF THE "BRECCIA" DESCRIBED FOR CORES 49-2 AND 49-1;
Piece No. : PCE 952 (2-10), 953 (12-20), 954 (22-38),
955 (40-50), 956 (53-58);
Texture : MOD PHYRIC, MEDIUM-GRAINED, PCE 956 HAS A GLASSY
RIM;
Structure : PCE 953 HAS NUMEROUS FRACTURES FILLED WITH DARK
GREEN SMEC?, PCES 952+956+955 HAVE PYRITE CRYSTALS
IN VEINS;
Alteration : MOD;
Comments : CONTINUATION OF LITHOSTRATIGRAPHIC UNIT;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
ID UNCERTAIN, DARK GREEN IN COLOR;
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/ 740 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 665.74
Core: 50 Top of Core Depth (m) : 665.00
Sect: 1 Top of Section Depth(m): 665.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 957 (0-6), 958 (6-9), 959 (11-14),
960 (15-19), 961 (20-22), 962 (25-35), 963 (37-41),
964 (42-45), 965 (44-50), 966 (48-50), 967 (51-54),
968 (56-64), 969 (66-73);
Texture : MOD PHYRIC, GLASSY RIMS AT PCES 957+960+962 ARE
STRONGLY ALTERED AND REPLACED BY SMEC (SOME FRESH
GLASS), PCES 957-962 ARE FINE-GRAINED, PCES 963-969
ARE MEDIUM-GRAINED;
Structure : SMEC AND FE.OX (PCE 957) AND PYRITE (958-962) OCCURS
AS SECONDARY MINERALS IN VEINLETS FILLING FRACTURES;
Alteration : FRESH
RELATIVELY FRESH;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
GREEN SMEC REPLACES OL AND GNDMASS;
PYRITE
FERROUS MN OXIDE
Leg : 70 Top/Bottom Interval(mm): 0/1420 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 670.92
Core: 51 Top of Core Depth (m) : 669.50
Sect: 1 Top of Section Depth(m): 669.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
SAME BASALT AS PREVIOUS CORE 50-1 PCES 963-969;
Piece No. : PCE 970 (1-2), 971 (5-11), 972 (14-26),
973 (26-38), 974 (39-42), 975 (42-45), 976 (45-47),
977 (49-53), 978 (50-57), 979 (57-61), 980 (62-75),
981 (78-90), 982 (91-101), 984 (114-125),
985 (122-127), 986 (129-141);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : ONLY SLIGHTLY FRACTURED, FILLED WITH LIGHT GREEN
SMEC, YELLOWISH STAIN IN BROKEN OPEN FRACTURES IN
PCES 984-986, IN PCE 980 VERY THIN VEINLETS OF
WHITEISH MINERAL (NON-FIZZY)-PROBABLY ZEOLITE, TRACE
OF FIZZY MINERAL ALSO PRESENT, THE WHITEISH VEIN AT
THE TOP OF PCE 980 CAN BE SEEN TO CUT A LARGE OL
PHENO WHICH IS PSEUDOMORPHED BY THE MEDIUM-GREEN
SMEC;
Alteration : SLIGHTLY
VERY LITTLE OBVIOUS ALTERATION;
YELLOWISH STAIN ON CORE SURFACE IN PCES 984-986;
Comments : PCE 983 IS MISSING;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
LIGHT GREEN SMEC, OL IS REPLACED BY MEDIUM GREEN
SMEC;
ZEOLITE
ID UNCERTAIN;
Leg : 70 Top/Bottom Interval(mm): 0/1480 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 679.98
Core: 52 Top of Core Depth (m) : 678.50
Sect: 1 Top of Section Depth(m): 678.50
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 987 (1-7), 988 (8-11), 989 (12-15),
990 (17-22), 991 (25-35), 992 (36-40), 993 (42-52),
995 (52-55), 996 (55-61), 997 (61-70), 998 (70-78),
999 (80-82), 1000 (85-90), 1001 (93-100),
1002 (100-110), 1003 (110-117), 1004 (117-125),
1005 (129-132), 1006 (135-141), 1007 (145-148);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM TO COARSE-GRAINED;
Structure : SMEC VEINS IN PCES 991-993+996+1000-1003, SULFIDE
OCCURS WITH SMEC IN PCES 989+993+995+996+100
(VEINLET IN PCE 987), IRREGULAR VOID FILLINGS AND
REPLACEMENTS OF SMEC OF THE BASALT UP TO 2MM
SCATTERED THROUGHOUT, SMALL DEXTRAL FAULT IN PCE
1002 OCCURS-DISPLACEMENT=4-5MM, FAULT IS FILLED
WITH SULFIDE;
Alteration : MOD
ALTERATION IS MUCH MORE CONTINOUS HERE (MORE
PERVASIVE), GREENISH YELLOW COLOR IS PERVASIVE
ON EXTERIOR AND UNCUT SURFACES AND SEEMS TO BE
DUE TO SMEC INFILTRATION OF SILICATE MATRIX;
Comments : CONTINUATION OF SAME ROCK TYPE AS IN CORES 50+51;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
SULFIDE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 681.50
Core: 52 Top of Core Depth (m) : 678.50
Sect: 2 Top of Section Depth(m): 680.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
CONTINUATION OF SAME ROCKS AS DESCRIBED IN SECTION
1;
Piece No. : PCE 1008 (1-3), 1009 (5-11), 1010 (13-20),
1011 (22-35), 1012 (36-39), 1013 (41-52),
1014 (52-59), 1015 (61-74), 1016 (74-84),
1017 (83-90), 1018 (91-102), 1019 (105-113),
1020 (115-124), 1021 (124-132), 1022 (136-142),
1023 (146-150);
Texture : MOD PHYRIC, MEDIUM TO COARSE-GRAINED;
Structure : SMEC VEINS ALSO SEEN IN PCES 1014+1016+1022, MANY
OTHER PCES ARE BOUNDED BY FRACTURES COATED WITH
SMEC, SULFIDES IN SMEC ALONG FRAGMENT BOUNDARIES IN
PCES 1012+1013+1016+1017+1019;
Alteration : MOD
SCATTERED PORTIONS OF THE FINE-GRAINED MATRIX
IS REPLACED BY SMEC, SOME GREEN-YELLOW COLOR
ON UNCUT SURFACES DUE TO SMEC INFILTRATION(?);
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
SULFIDES
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 683.00
Core: 52 Top of Core Depth (m) : 678.50
Sect: 3 Top of Section Depth(m): 681.50
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1024 (1-10), 1025 (13-20), 1026 (22-30),
1027 (32-40), 1028 (43-51), 1029 (51-62),
1030 (63-69), 1031 (72-79), 1032 (81-86),
1033 (89-96), 1034 (99-107), 1035 (111-118),
1036 (121-124), 1037 (122-130), 1038 (135-150);
Texture : MOD PHYRIC, COARSE-GRAINED;
Structure : SMEC VEINS IN PCES 1026+1032+1034+1037;
Alteration : MOD
SOME GREENISH-YELLOW COLORATION FROM SMEC
INFILTRATION;
Comments : CONTINUATION OF SAME UNIT IN SECTIONS 1+2;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
Minerals Replaced: OL
OL PHENOS AND PORTIONS OF SILICATE MATRIX
REPLACED BY SMEC;
SULFIDE
SULFIDE GRAINS IN SMEC IN PCES 1032+1026;
Leg : 70 Top/Bottom Interval(mm): 0/1340 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 684.34
Core: 52 Top of Core Depth (m) : 678.50
Sect: 4 Top of Section Depth(m): 683.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1039 (0-10), 1040 (12-21), 1041 (23-30),
1042 (33-40), 1043 (42-47), 1044 (49-56),
1045 (48-50), 1046 (63-69), 1047 (72-79),
1048 (81-86), 1049 (89-99), 1050 (103-112),
1051 (117-122), 1052 (126-133);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : SMEC VEINS ARE LESS DOMINANT IN THIS SECTION;
Alteration : MOD
GREENISH-YELLOW COLORATIONS ARE LESS DOMINANT IN
THIS SECTION;
Comments : CONTINUATION OF UNIT IN FIRST 3 SECTIONS;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
OL PHENOS AND SILICATE MATRIX IS REPLACED BY SMEC;
Leg : 70 Top/Bottom Interval(mm): 0/ 350 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 687.85
Core: 53 Top of Core Depth (m) : 687.50
Sect: 1 Top of Section Depth(m): 687.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1053 (4-8), 1054 (12-14), 1055 (16-25),
1056 (26-35);
Texture : MOD PHYRIC;
Structure : MORE FRACTURED (ALMOST TO BRECCIATION) THAN ABOVE;
Alteration : MOD;
Comments : CONTINUATION OF SAME ROCK UNIT AS SECTION 2;
Phenocrysts: PLAGIOCLASE
OLIVINE
Structure : PCES 1053+1055+1056 HAVE FRACTURES NOW FILLED WITH
SECONDARY MINERALS THUS THEY HAVE BECOME VEINS,
THESE VEINS ARE NOT COMPLETELY FILLED AND SOME
OPEN SPACE REMAINS, IN THESE OPEN SPACES
RHOMBOHEDRAL CRYSTALS AND BOTRYOIDAL MASSES HAVE
BEEN DEPOSITED ON TOP OF THE SMEC, THE PARAGENETIC
SEQUENCE IS: SMEC TO RHOMBOHEDRAL MINERAL TO
BOTRYOIDAL MINERAL, MINOR EFFERVESCENCE OCCURS WITH
HCL, BUT OBSERVER DOES NOT THINK IT IS THE
RHOMBOHEDRAL MINERAL;
Replacement: SMECTITE
Leg : 70 Top/Bottom Interval(mm): 380/ 550 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 688.05
Core: 53 Top of Core Depth (m) : 687.50
Sect: 1 Top of Section Depth(m): 687.88
LITHOLOGY: APHYRIC BASALT GRAVEL;
Piece No. : PCE 1057 (38-54);
Texture : APHYRIC GRAVEL, FINER GRAINED;
Alteration : MOD;
Comments : COULD REPRESENT THE BEGINNING OF ANOTHER UNIT BELOW;
Vesicles : MOD VESICULAR;
Leg : 70 Top/Bottom Interval(mm): 0/ 700 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 692.70
Core: 54 Top of Core Depth (m) : 692.00
Sect: 1 Top of Section Depth(m): 692.00
LITHOLOGY: BASALT;
Piece No. : PCE 1058 (0-10), 1059 (11-20), 1060 (22-25),
1061 (27-36), 1062 (37-41), 1063 (42-52),
1064 (55-60), 1065 (63-70);
Texture : GLOMEROPHYRIC, MEDIUM TO FINE-GRAINED, PCE 1058 IS
MEDIUM-GRAINED, GRAIN SIZE GRADES TO FINE (AND
VESICULATION INCREASES) TOWARD PCE 1065,
GLOMEROCRYSTS ARE MORE CONCENTRATED IN FINER GRAINED
PCES;
Alteration : MOD;
Vesicles : VESICULATION INCREASES FROM PCE 1058 TO 1065;
Structure : SMEC VEINS IN PCES 1058+1059+1061+1062+1063 ARE
GENERALLY 0.5-2MM THICK AND COMPOSED OF BROWN-GREEN
SMEC THAT IS TRANSLUCENT IN PATCHES;
Replacement: SMECTITE
BROWN-GREEN SMEC, TRANSLUCENT IN PATCHES;
Leg : 70 Top/Bottom Interval(mm): 740/1470 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 693.47
Core: 54 Top of Core Depth (m) : 692.00
Sect: 1 Top of Section Depth(m): 692.74
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1066 (74-78), 1067 (81-88), 1068 (90-98),
1069 (101-117), 1070 (120-127), 1071 (130-135),
1072 (136-147);
Texture : APHYRIC, MEDIUM-GRAINED;
Structure : GREEN SMEC VEINS AND VOID FILLINGS IN PCES 1066+
1067+1069+1070, IN THESE SAME PCES SOME OF THE VEIN
FILLINGS HAVE BEEN COATED WITH TRANSLUCENT CRYSTALS
(POSSIBLY ZEOLITE);
Alteration : MOD
Comments : DEFINITE LITHOLOGIC BREAK BETWEEN THESE UNITS;
Vesicles :
Location: Filling: SMEC
VESICLES ARE MOSTLY FILLED WITH DARK GREEN SMEC;
Replacement: SMECTITE
DARK GREEN;
ZEOLITE
POSSIBLY ZEOLITE AS TRANSLUCENT CRYSTALS COATING
VEIN FILLINGS;
Leg : 70 Top/Bottom Interval(mm): 0/ 600 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 694.10
Core: 54 Top of Core Depth (m) : 692.00
Sect: 2 Top of Section Depth(m): 693.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1073 (2-7), 1074 (10-20), 1075 (22-30),
1076 (31-37), 1077 (40-50), 1078 (52-60);
Texture : APHYRIC, GLASS RIND OCCURS AT 1076, A LITTLE GLASS
ALSO PRESENT ON ONE OF THE GRAVEL PCES IN 1077;
Structure : FRACTURES IN PCES 1073-1075 ARE MOSTLY FILLED BY
SMEC (GREEN-BROWN);
Alteration : MOD
VERY MINOR SULFIDE PATCHES ASSOCIATED WITH SMEC
VEIN IN 1073;
Comments : CONTINUATION OF BOTTOM UNIT IN SECTION 1 OF THIS
CORE, GLASS RIND OCCURS AT PCE 1076 HOWEVER THE
BASALT ABOVE AND BELOW IS LITHOLOGICALLY SIMILAR AND
NO LITHIC UNIT IS PROPOSED;
Vesicles :
Location: Filling: SMEC
VESICLES ARE MOSTLY FILLED WITH DARK GREEN SMEC;
Replacement: SMECTITE
DARK GREEN AND GREEN-BROWN;
SULFIDE
VERY MINOR SULFIDE PATCHES;
Leg : 70 Top/Bottom Interval(mm): 0/1400 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 697.90
Core: 55 Top of Core Depth (m) : 696.50
Sect: 1 Top of Section Depth(m): 696.50
LITHOLOGY: APHYRIC TO SPARSELY GLOMEROPHYRIC BASALT;
Piece No. : PCE 1079 (2-8), 1080 (9-13), 1081 (17-21),
1082 (25-31), 1083 (30-39), 1084 (41-47),
1085 (47-50), 1086 (52-59), 1087 (61-67),
1088 (70-80), 1089 (82-85), 1090 (86-90),
1091 (92-100), 1092 (100-105), 1093 (107-113),
1094 (117-130), 1095 (134-140);
Texture : APHYRIC TO SPARSELY GLOMEROPHYRIC, SEVERAL GRAIN
SIZE CHANGES, GLASSY RIND, PCES 1091+1092 ARE
SLIGHTLY MORE GLOMEROPHYRIC THAN REST OF SECTION,
GLASSY RIMS ON PCES 1082+1093+1094, PCE 1095 IS
SLIGHTLY COARSER GRAINED AND LESS GLOMEROPHYRIC
THAN REST OF SECTION (PERHAPS INTERIOR OF FLOW),
FINE TO MEDIUM-GRAINED;
Alteration : MOD
SCATTERED SULFIDE GRAINS IN MATRIX OF PCE 1081+
1087;
Comments : CONTINUATION OF FINE TO MEDIUM-GRAINED SPARSELY
GLOMEROPHYRIC UNIT PRESENT AT BASE OF CORE 54,
SEVERAL GRAIN SIZE CHANGES AND AT LEASE ONE GLASSY
RIND INDICATE POSSIBLE VARIATIONS IN COOLING UNITS
HOWEVER THE MAJOR LITHOLOGIC TYPE OF BASALT IS
PRESENT ON BOTH SIDES OF THE POSSIBLE BOUNDARIES;
Vesicles :
Location: Filling: SMEC
VESICLES ARE FILLED WITH SMEC;
Replacement: SMECTITE
SULFIDE
SCATTERED SULFIDE GRAINS IN MATRIX OF 1081+1087;
Leg : 70 Top/Bottom Interval(mm): 0/ 440 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 698.44
Core: 55 Top of Core Depth (m) : 696.50
Sect: 2 Top of Section Depth(m): 698.00
LITHOLOGY: APHYRIC TO SPARSELY GLOMEROPHYRIC BASALT;
Piece No. : PCE 1096 (0-20), 1097 (23-30), 1098 (34-40);
Texture : APHYRIC TO SPARSELY GLOMEROPHYRIC, NO GLASSY RIM,
FINE TO MEDIUM-GRAINED, PCE 1098 IS A LITTLE MORE
COARSE-GRAINED;
Alteration : MOD;
Comments : CONTINUATION OF UNIT IN SECTION 1 OF CORE 55;
Vesicles :
Location: 1 Filling: SMEC
NUMEROUS, FILLED WITH GREEN SMEC;
Replacement: SMECTITE
GREEN;
Leg : 70 Top/Bottom Interval(mm): 0/ 80 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 705.58
Core: 56 Top of Core Depth (m) : 705.50
Sect: 1 Top of Section Depth(m): 705.50
LITHOLOGY: APHYRIC TO SPARSELY GLOMEROPHYRIC BASALT;
Piece No. : PCE 1099 (2-8);
Texture : APHYRIC TO SPARSELY GLOMEROPHYRIC;
Alteration : MOD
FOUR SIDES ARE COATED BY TINY PALE GREEN CRYSTALS-
SAME AS CORE 54-1 (ZEOLITE?);
Replacement: ZEOLITE
ID UNCERTAIN;
Leg : 70 Top/Bottom Interval(mm): 100/ 730 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 706.23
Core: 56 Top of Core Depth (m) : 705.50
Sect: 1 Top of Section Depth(m): 705.60
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 1100 (10-19), 1101 (19-25), 1102 (27-30),
1103 (32-40), 1104 (40-47), 1105 (50-56),
1106 (57-65), 1107 (66-73);
Texture : ELEMENTS OF BRECCIA ARE MEDIUM-GRAINED VESICULAR
APHYRIC BASALT (VESICLES ARE FILLED BY DARK GREEN
SMEC?) AND VERY FINE-GRAINED APHYRIC BASALT AND
CEMENT OF SMEC (MAYBE=OLD GLASS), THE SIZE OF THE
ELEMENTS VARY GREATLY (FROM 1MM TO 70MM);
Leg : 70 Top/Bottom Interval(mm): 750/1490 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 706.99
Core: 56 Top of Core Depth (m) : 705.50
Sect: 1 Top of Section Depth(m): 706.25
LITHOLOGY: APHYRIC TO SPARSELY GLOMEROPHYRIC BASALT;
Piece No. : PCE 1108 (75-81), 1109 (82-90), 1110 (93-101),
1111 (103-110), 1112 (112-122), 1113 (125-133),
1114 (135-149);
Texture : APHYRIC TO SPARSELY GLOMEROPHYRIC, MEDIUM-GRAINED,
PCES 1109 AND 1110 ARE FINER GRAINED, GLASSY RIM ON
PCE 1105, PCES 1111+1114 ARE THE SAME AS PCE 1108;
Alteration : MOD
MOST OF THE SMALL PCES ARE COATED BY DARK GREEN
SMEC;
Structure : PYRITE IN A CRACK;
Comments : SAME BASALT AS THAT COMPOSING THE ELEMENTS OF THE
BRECCIA AND THE BASALT OF CORE 55-2;
Replacement: SMECTITE
DARK GREEN;
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 708.50
Core: 56 Top of Core Depth (m) : 705.50
Sect: 2 Top of Section Depth(m): 707.00
LITHOLOGY: APHYRIC TO SPARSELY GLOMEROPHYRIC BASALT;
SAME BASALT AS PCES 1111 TO 1114 OF SECTION 56-1;
Piece No. : PCE 1115 (0-12), 1116 (14-20), 1117 (22-30),
1118 (31-39), 1119 (40-62), 1120 (63-73),
1121 (75-95), 1122 (95-103), 1123 (105-141),
1124 (144-150);
Texture : APHYRIC TO SPARSELY GLOMEROPHYRIC, MEDIUM-GRAINED,
GLASSY RIM ON PCE 1121;
Structure : CRACKS FILLED BY SMEC IN PCE 1119;
Alteration : MOD;
Vesicles :
Location: Filling: SMEC
VESICULAR, FILLED WITH DARK GREEN SMEC;
Replacement: SMECTITE
DARK GREEN;
Leg : 70 Top/Bottom Interval(mm): 0/ 750 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 715.25
Core: 57 Top of Core Depth (m) : 714.50
Sect: 1 Top of Section Depth(m): 714.50
LITHOLOGY: APHYRIC TO SPARSELY GLOMEROPHYRIC BASALT;
SAME BASALT AS SECTIONS 56-1 AND 56-2;
Piece No. : PCE 1125 (0-8), 1126 (8-14), 1127 (14-23),
1128 (24-27), 1129 (31-35), 1130 (36-44),
1131 (44-50), 1132 (48-56), 1133 (58-60),
1134 (60-64), 1135 (65-67), 1136 (68-70),
1137 (71-73), 1138 (73-75);
Texture : APHYRIC TO SPARSELY GLOMEROPHYRIC, MEDIUM-GRAINED,
THE BASALT BECOMES FINER GRAINED TOWARDS THE MIDDLE
OF THE CORE, STRONGLY ALTERED GLASSY RIM AT PCE
1134;
Structure : FRACTURES ARE FILLED WITH DARK GREEN SMEC AND
PYRITE (1127+1131);
Alteration : MOD
TOWARDS THE BOTTOM OF THIS UNIT THE ALTERATION
BECOMES OXIDATIVE (RED-BROWNISH FE-OXIDES IN
FRACTURES AT 1133-1138);
Comments : LAST PCE OF THIS TYPE OF BASALT 1138, NEW UNIT
BEGINNING AT 1139;
Vesicles :
Location: Filling: SMEC
VESICULAR, FILLED WITH DARK GREEN SMEC;
Replacement: SMECTITE
DARK GREEN;
PYRITE
FERROUS MN OXIDE
IN FRACTURES AT 1133-1138;
Leg : 70 Top/Bottom Interval(mm): 770/1490 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 715.99
Core: 57 Top of Core Depth (m) : 714.50
Sect: 1 Top of Section Depth(m): 715.27
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1139 (77-87), 1140 (88-99), 1141 (101-107),
1142 (110-117), 1143 (118-122), 1144 (124-135),
1145 (137-149);
Texture : MOD PHYRIC, FINE TO MEDIUM-GRAINED, GRAIN SIZE
CHANGES FROM FINE-GRAINED IN 1139 TO MEDIUM-GRAINED
IN 1140, ON TOP OF 1139 IS A POSSIBLE ALTERED GLASSY
RIM;
Structure : UP TO 2MM THICK VEINLETS ARE FILLED WITH LIGHT TO
DARK GREEN SMEC, A 2MM VEINLET AT 1140 HAS WHITE
GREEN SMEC AT THE BORDER AND DARK GREEN SMEC IN
THE CENTER;
Alteration : MOD;
Comments : NEW UNIT BEGINNING AT 1139;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
LIGHT TO DARK GREEN IN COLOR;
Leg : 70 Top/Bottom Interval(mm): 0/1470 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 717.47
Core: 57 Top of Core Depth (m) : 714.50
Sect: 2 Top of Section Depth(m): 716.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1146 (1-6), 1147 (5-15), 1148 (14-23),
1149 (22-42), 1150 (40-48), 1151 (50-65),
1152 (64-70), 1153 (70-80), 1154 (81-90),
1155 (90-97), 1156 (100-107), 1157 (108-115),
1158 (116-124), 1159 (123-135), 1160 (137-146);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : VEINS AND FRACTURES ARE FILLED WITH GREEN SMEC,
PYRITE OCCURS AS PATCHES IN SOME OF THE VEINS;
Alteration : MOD;
Comments : CONTINUATION OF SECTION 57-1;
Phenocrysts: PLAGIOCLASE
OLIVINE
THE AMOUNT OF OL PHENOS DECREASE IN THE LOWEST
PART OF THE SECTION;
Replacement: SMECTITE
Minerals Replaced: OL
DARK GREEN SMEC REPLACES OL, GREEN SMEC IN VEINS
AND FRACTURES;
PYRITE
OCCURS AS PATCHES IN SOME OF THE VEINS;
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 719.00
Core: 57 Top of Core Depth (m) : 714.50
Sect: 3 Top of Section Depth(m): 717.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1161 (0-18), 1162 (18-26), 1163 (27-35),
1164 (38-47), 1165 (49-51), 1166 (51-55),
1167 (55-58), 1168 (59-60), 1169 (60-65),
1170 (68-72), 1171 (72-75), 1172 (75-78),
1173 (75-78), 1174 (78-80), 1175 (80-84),
1176 (84-93), 1177 (95-104), 1178 (104-114),
1179 (115-123), 1180 (126-130), 1181 (130-135),
1182 (135-137), 1183 (134-140), 1184 (138-140),
1185 (140-143), 1186 (141-145), 1187 (145-150),
1188 (147-149);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : VEINLETS ARE FILLED WITH DARK-GREEN SMEC, PYRITE
OCCURS IN VEINLETS;
Alteration : MOD;
Comments : CONTINUATION OF SECTION 57-2;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
Phenocrysts: DARK GREEN SMEC;
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/ 770 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 724.27
Core: 58 Top of Core Depth (m) : 723.50
Sect: 1 Top of Section Depth(m): 723.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1189 (0-11), 1190 (11-21), 1192 (28-38),
1193 (40-47), 1194 (46-50), 1195 (52-59),
1196 (60-69), 1197 (70-75), 1198 (75-77);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : SMEC IN VEINLETS, PYRITE BECOMES MORE ABUNDANT IN
FRACTURES;
Alteration : MOD;
Comments : CONTINUATION OF SECTION 57-3, CHANGE TO ANOTHER
LITHOLOGICAL UNIT 1199;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
PYRITE
Leg : 70 Top/Bottom Interval(mm): 770/1470 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 724.97
Core: 58 Top of Core Depth (m) : 723.50
Sect: 1 Top of Section Depth(m): 724.27
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1199 (77-80), 1200 (82-91), 1201 (92-98),
1202 (100-107), 1203 (109-121), 1204 (122-135),
1205 (137-147);
Texture : MOD PHYRIC, FINE-GRAINED, FURTHER DOWN THIS SECTION
THE BASALT BECOMES MORE AND MORE MEDIUM-GRAINED AND
SEEMS ALMOST SIMILAR TO THE OVERLYING BASALT AT THE
MIDDLE OF SECTION 2, 2 PCES WITH GLASSY RIM, PCE
1200 HAS AN INCLUSION OF THE OVERLYING BASALT ABOUT
2 BY 1.5CM;
Structure : TOP OF A DIKE, DARK GREEN SMEC AS VEINLET FILLING;
Alteration : MOD;
Comments : PCE 1200 HAS A CONTACT ZONE 0.3 TO 1.0CM;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
PYRITE
IN ALTERED GLASS AND VEIN FILLING;
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 726.50
Core: 58 Top of Core Depth (m) : 723.50
Sect: 2 Top of Section Depth(m): 725.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1206 (0-10), 1207 (10-14), 1208 (17-29),
1209 (30-43), 1210 (45-55), 1211 (54-57),
1212 (55-57), 1213 (60-66), 1214 (66-85),
1215 (85-90), 1216 (92-95), 1217 (95-100),
1218 (96-100), 1219 (101-110), 1220 (110-117),
1221 (117-125), 1222 (128-130), 1223 (132-150);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : VEINLETS ARE FILLED WITH DARK-GREEN SMEC, PYRITE
OCCURS AS THIN PATCHES IN THESE VEINLETS;
Alteration : MOD;
Comments : CONTINUATION OF 58-1;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 728.00
Core: 58 Top of Core Depth (m) : 723.50
Sect: 3 Top of Section Depth(m): 726.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1224 (0-4), 1225 (3-9), 1226 (10-17?),
1227 (18-22), 1228 (25-32), 1229 (32-38),
1230 (38-42), 1231 (44-56), 1232 (60-68),
1233 (67-77), 1234 (78-87), 1235 (87-99),
1236 (100-107), 1237 (107-117), 1238 (120-122),
1239 (122-125), 1240 (126-130), 1241 (131-132),
1242 (133-137), 1243 (138-142), 1244 (143-146),
1245 (145-146), 1246 (147-150);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : VEINLETS (UP TO 3MM) ARE FILLED WITH DARK-GREEN SMEC
AND PYRITE;
Alteration : MOD
PCE 1228 HAS A WHITE ZEOLITE (ABOUT 10MM)
INCLUSION SURROUNDED BY DARK GREEN SMEC;
Comments : CONTINUATION OF SECTION 58-2;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
DARK GREEN SMEC IN VEINLETS AND SURROUNDING
ZEOLITE INCLUSION;
ZEOLITE
WHITE ZEOLITE(?) INCLUSION ABOUT 10MM;
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/ 800 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 733.30
Core: 59 Top of Core Depth (m) : 732.50
Sect: 1 Top of Section Depth(m): 732.50
LITHOLOGY: OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 1247 (2-19), 1248 (22-25), 1249 (26-31),
1250 (31-38), 1251 (39-55), 1252 (56-64),
1253 (67-78);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM TO COARSE-GRAINED,
2 PCES FROM 1247 ARE FINER GRAINED;
Structure : SOME CRACKS OCCUR AND ARE FILLED BY DARK GREEN
SMEC, 4 PCES FROM 1247 AND 1248 ARE BRECCIA OR
CONTAIN SO MANY AND SO THICK CRACKS THAT THEY LOOK
LIKE BRECCIA, PYRITE CRYSTALS IN VEINS IN PCE 1250+
ONE PCE OF 1251+1252;
Alteration : MOD;
Comments : DUE TO A VERY POOR RECOVERY IT IS HARD TO HAVE A
GOOD IDEA OF THE LITHOSTRATIGRAPHY OF THIS CORE, BUT
IT IS DIFFERENT FROM CORE 58;
Phenocrysts: OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
DARK GREEN SMEC;
PYRITE
CRYSTALS-IN VEINS;
Leg : 70 Top/Bottom Interval(mm): 0/1450 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 742.95
Core: 60 Top of Core Depth (m) : 741.50
Sect: 1 Top of Section Depth(m): 741.50
LITHOLOGY: OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 1254 (1-8), 1255 (9-16), 1256 (18-24),
1257 (27-30), 1258 (31-34), 1259 (36-45),
1260 (46-54), 1261 (55-61), 1262 (62-63),
1263 (65-75), 1264 (77-90), 1265 (91-100),
1266 (100-110), 1267 (109-106), 1268 (118-127),
1269 (130-136), 1270 (137-145);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM TO COARSE-GRAINED;
Structure : CRACKS ARE FILLED BY DARK-GREEN SMEC, IN SOME OF
THESE CRACKS SMEC SEEMS TO BE TRANSLUCID (OTHER
KIND OF SMEC?);
Alteration : MOD;
Comments : CONTINUATION OF SECTION 59-1 PCES 1251 TO 1253;
Phenocrysts: OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
DARK GREEN SMEC, OL ALTERED TO SMEC IS UNCERTAIN,
SOME SMEC IN CRACKS ARE TRANSLUCID (MAY BE OTHER
KIND OF SMEC);
Leg : 70 Top/Bottom Interval(mm): 0/ 870 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 743.87
Core: 60 Top of Core Depth (m) : 741.50
Sect: 2 Top of Section Depth(m): 743.00
LITHOLOGY: OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 1271 (1-12), 1272 (12-20), 1273 (20-28),
1274 (34-37), 1275 (40-47), 1276 (49-55),
1277 (55-62), 1278 (64-86);
Texture : SPARSELY TO MOD PHYRIC, MEDIUM TO COARSE-GRAINED;
Structure : CRACKS ARE FILLED BY DARK-GREEN SMEC, SOME PYRITE
CRYSTALS IN VEINS OF PCE 1273;
Comments : CONTINUATION OF 60-1;
Phenocrysts: OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
ALTERATION OF OL TO DARK GREEN SMEC IS UNCERTAIN;
PYRITE
CRYSTALS IN VEINS OF PCE 1273;
Leg : 70 Top/Bottom Interval(mm): 0/1480 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 751.98
Core: 61 Top of Core Depth (m) : 750.50
Sect: 1 Top of Section Depth(m): 750.50
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 1279 (0-4), 1280 (6-11), 1281 (13-20),
1282 (22-25), 1283 (27-33), 1284 (34-40),
1285 (41-47), 1286 (47-54), 1287 (56-67),
1288 (67-72), 1289 (72-78), 1290 (76-85),
1291 (87-95), 1292 (96-103), 1293 (104-110),
1294 (110-116), 1295 (116-121), 1296 (122-136),
1297 (138-147);
Texture : APHYRIC TO OL SPARSELY PHYRIC, FINE TO MEDIUM-
GRAINED, GLASSY RIMS IN PCES 1282-1285+1296+1297,
PCES 1283-1285+1288 HAVE APPEARANCE OF BRECCIA;
Structure : NUMEROUS CRACKS FILLED BY GREEN SMEC AND PYRITE,
IN PCES 1283-1285+1288 CRACKS ARE SO NUMEROUS AND
SO THICK (UP TO 4MM IN THICKNESS) THAT THE ROCK
LOOKS LIKE A BRECCIA, WHITE MINERAL (ZEOLITE?) IN
CRACK OF 1284 AND 1296, IN A THICK (5MM) VEIN
OF 1287 THERE IS A PALE YELLOW-GREEN MINERAL (STILL
SMEC??);
Alteration : MOD;
Phenocrysts: OLIVINE
Size(mm): <1
Replacement: SMECTITE
GREEN IN COLOR;
PYRITE
ZEOLITE
ID UNCERTAIN;
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 753.50
Core: 61 Top of Core Depth (m) : 750.50
Sect: 2 Top of Section Depth(m): 752.00
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCE 1298 (1-5), 1299 (7-15), 1302 (31-38),
1303 (40-63), 1304 (64-70), 1305 (70-74),
1306 (76-84), 1307 (85-95), 1308 (96-102);
Texture : MOD PHYRIC, FINE-GRAINED, PCE 1306 HAS A GLASSY
RIM;
Alteration : MOD;
Comments : CONTINUATION OF 61-1;
Phenocrysts: OLIVINE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 753.50
Core: 61 Top of Core Depth (m) : 750.50
Sect: 2 Top of Section Depth(m): 752.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1300 (16-22), 1301 (25-30), 1310 (111-116),
1311 (118-127), 1312 (127-134), 1313 (137-142);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Alteration : MOD;
Comments : CONTINUATION OF 61-1;
Phenocrysts: PLAGIOCLASE
OLIVINE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 753.50
Core: 61 Top of Core Depth (m) : 750.50
Sect: 2 Top of Section Depth(m): 752.00
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 1309 (105-110), 1314 (145-150);
Texture : PCE 1309 IS A BRECCIA WHOSE ELEMENTS ARE FINE-
GRAINED, PCE 1314 CONTAINS NUMEROUS VEINS FILLED
WITH SMEC (AN ASPECT OF BRECCIA);
Leg : 70 Top/Bottom Interval(mm): 0/ 330 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 753.83
Core: 61 Top of Core Depth (m) : 750.50
Sect: 3 Top of Section Depth(m): 753.50
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1315 (0-7), 1316 (10-24), 1317 (25-31);
Texture : MOD PHYRIC, FINE TO MEDIUM-GRAINED;
Structure : VEINLETS ARE FILLED WITH DARK-GREEN SMEC AND
DISSEMINATED PYRITE;
Alteration : MOD;
Comments : CONTINUATION OF 61-2;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
Minerals Replaced: OL
DARK GREEN SMEC REPLACING OL;
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/ 50 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 755.05
Core: 62 Top of Core Depth (m) : 755.00
Sect: 1 Top of Section Depth(m): 755.00
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1318 (2-5);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Comments : PCE 1318 IS ALMOST IDENTICAL TO THOSE OF CORE 60-1,
IT IS EITHER A DIFFERENT UNIT BETWEEN 61-3 AND
62-1 WHERE ONLY ONE PCE HAS BEEN RECOVERED OR IT
HAS FALLEN DOWN THE CORE AND BELONGS TO 60-1;
Phenocrysts: OLIVINE
PLAGIOCLASE
Leg : 70 Top/Bottom Interval(mm): 80/1450 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 756.45
Core: 62 Top of Core Depth (m) : 755.00
Sect: 1 Top of Section Depth(m): 755.08
LITHOLOGY: OL-PLAG SPARSELY TO MOD PHYRIC BASALT;
EVERY PCE IS SIMILAR TO THOSE FOUND IN CORE 61;
Piece No. : PCE 1319 (8-16), 1320 (20-27), 1321 (28-42),
1322 (44-51), 1323 (52-83), 1324 (85-90),
1325 (90-97), 1326 (97-101), 1327 (104-110),
1328 (111-120), 1329 (122-129), 1330 (130-136),
1331 (138-145);
Texture : SPARSELY TO MOD PHYRIC, FINE-GRAINED, NO GLASSY
RIMS;
Structure : NUMEROUS FRACTURES AND VEINLETS ARE FILLED WITH
DARK-GREEN SMEC, VEINS (5-10MM) THICK OF LIGHT TO
DARK SMEC AT PCES 1319+1328, RED-BROWN FE-OXIDE
IN FRACTURE OF PCE 1330;
Alteration : MOD TO EXT
PCE 1328 IS EXT ALTERED;
Comments : CONTINUATION FROM 61-3 IS NOT CERTAIN;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
Minerals Replaced: OL
FERROUS MN OXIDE
RED-BROWN IN COLOR;
Leg : 70 Top/Bottom Interval(mm): 0/ 900 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 757.40
Core: 62 Top of Core Depth (m) : 755.00
Sect: 2 Top of Section Depth(m): 756.50
LITHOLOGY: OL-PLAG SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 1332 (0-8), 1333 (11-18), 1334 (20-28),
1335 (31-49), 1336 (50-57), 1337 (60-72),
1338 (75-81), 1339 (84-89);
Texture : SPARSELY TO MOD PHYRIC, FINE-GRAINED, PCES 1333+
1334 HAVE A THICK ALMOST COMPLETELY ALTERED GLASSY
RIM, FRAGMENTS OF PCE 1335 CONTAIN ALTERED AND
FRESH GLASS;
Structure : BELOW THESE GLASS FRAGMENTS THE SECTION BECOMES
LESS FRACTIONED BUT PCES 1336-1338 CONTAIN STILL
NUMEROUS VEINLETS (UP TO 2MM THICK) WHICH ARE
FILLED WITH LIGHT TO DARK GREEN SMEC, PCE 1338
CONTAINS PYRITE IN A FRACTURE;
Alteration : EXT
PCES 1333+1334 ARE EXTENSIVELY ALTERED;
MOD
REMAINING PCES ARE MOD ALTERED, IN TWO PCES OF
1337 THE ALTERATION HAS BEEN MORE OXIDATIVE
(DOCUMENTED BY RED-BROWN MATERIAL);
Comments : CONTINUATION OF 62-1;
Alteration : NUMEROUS 10MM THICK ALTERED SMEC ZONES IN PCES
1333+1334 GIVE A BRECCIATED APPEARANCE;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 765.50
Core: 63 Top of Core Depth (m) : 764.00
Sect: 1 Top of Section Depth(m): 764.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1340 (0-6), 1341 (7-10), 1342 (12-21),
1343 (22-29), 1344 (31-34), 1345 (36-43),
1346 (43-52), 1347 (53-64), 1348 (65-84),
1349 (86-95), 1350 (96-106), 1351 (107-113),
1352 (113-119), 1353 (118-122), 1354 (122-130),
1355 (130-140), 1356 (141-150);
Texture : FINE TO MEDIUM-GRAINED;
Structure : NUMEROUS SMEC FILLED FRACTURES AND VEINLETS, VEINS
ARE FILLED WITH LIGHT TO DARK-GREEN SMEC,
IN PCES 1356+1348 THE SMEC FILLED VEINLETS ARE ABOUT
2MM THICK;
Alteration : MOD TO EXT
PCES 1343+1344+1355+1356 ARE EXT ALTERED;
Comments : CONTINUATION OF 62-1, MOST OF THE SAMPLES HAD TO BE
PUT IN SHRINK TUBING TO AVOID FRAGMENTATION;
Phenocrysts: PLAGIOCLASE
Size(mm): TO 2
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
IN THE NON-FRACTURED PART OL IS REPLACED BY SMEC;
HEMATITE
HEMATITE IN PCES 1348+1349 TOGETHER WITH TRACES
OF PYRITE IN 1348?;
PYRITE
ID UNCERTAIN;
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 767.00
Core: 63 Top of Core Depth (m) : 764.00
Sect: 2 Top of Section Depth(m): 765.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1357 (0-5), 1358 (5-10), 1359 (12-22),
1360 (24-33), 1361 (35-42), 1362 (43-50),
1363 (52-60), 1364 (58-65), 1365 (65-75),
1366 (77-84), 1367 (85-94), 1368 (92-100),
1369 (102-110), 1370 (111-119), 1371 (119-125),
1372 (125-128), 1373 (128-134), 1374 (136-143),
1375 (145-150);
Texture : MOD PHYRIC, FINE TO MEDIUM-GRAINED;
Structure : THIS SECTION IS NOT AS FRACTURED AS SECTION 1,
PYRITE OCCURS IN FRACTURE OF 1374, SMEC IN VEINLETS;
Alteration : MOD
ALTERATION IS THE SAME;
Comments : CONTINUATION OF 63-1;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
OL ALTERED TO SMEC;
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 768.50
Core: 63 Top of Core Depth (m) : 764.00
Sect: 3 Top of Section Depth(m): 767.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1376 (3-8), 1377 (11-18), 1378 (20-27),
1379 (29-35), 1380 (37-45), 1381 (47-52),
1382 (55-59), 1383 (61-70), 1384 (73-84),
1385 (86-104), 1386 (106-110), 1387 (113-126),
1388 (129-134), 1389 (135-145), 1390 (145-150);
Texture : MOD PHYRIC, FINE TO MEDIUM-GRAINED;
Structure : LARGE SMEC VEIN AT BOTTOM OF PCE 1379 (NOW AS LITTLE
PCES);
Alteration : MOD
SAME ALTERATION AS 63-1;
Comments : CONTINUATION OF 63-2;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Leg : 70 Top/Bottom Interval(mm): 0/1130 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 769.63
Core: 63 Top of Core Depth (m) : 764.00
Sect: 4 Top of Section Depth(m): 768.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1391 (0-7), 1392 (7-13), 1393 (15-25),
1394 (28-43), 1395 (45-54), 1396 (55-60),
1397 (60-67), 1398 (67-70), 1399 (72-83),
1400 (86-96), 1401 (98-111);
Texture : MOD PHYRIC, PCES 1391+1392+1401 ARE FINE-GRAINED,
PCES 1893-1400 ARE MEDIUM-GRAINED, ALL FRAGMENTS
OF PCE 1393 HAVE A GLASSY RIM OR CONSISTS OF
MAINLY GLASS-GLASS IS PARTLY ALTERED TO GREEN SMEC;
BASALT OF PCE 1401 IS SIMILAR TO THE BASALT OF
PCE 1392, IN PCE 1394 GREEN-BROWN MINERAL FORM A
CONCENTRIC RIND;
Structure : IN PCES 1391+1392 ALTERATION IN FRACTURES AND
VEINLETS WITH SMEC FORMATION, UNIT OF PCES 1393-
1400 CONSISTS OF MASSIVE BASALT WHICH IS NOT VERY
FRACTURED, VEINLETS (PCES 1397+1398) AND MOST OF
SAMPLE 1396 ARE FILLED WITH DARK GREEN SMEC, IN
PCE 1401 SMEC IN VEINS;
Texture : BASALT OF PCE 1401 IS SIMILAR TO THE BASALT OF
PCE 1392, IN PCE 1394 GREEN-BROWN MINERAL FORM A
CONCENTRIC RIND;
Alteration : MOD;
Comments : LITHOLOGICAL UNIT OF 63-3 ENDS AT PCE 1392;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
HEMATITE
IN PCE 1397;
Leg : 70 Top/Bottom Interval(mm): 0/1400 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 774.40
Core: 64 Top of Core Depth (m) : 773.00
Sect: 1 Top of Section Depth(m): 773.00
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
Piece No. : PCE 1402 (0-5), 1403 (8-15), 1404 (15-23),
1405 (25-31), 1406 (31-38), 1407 (37-41),
1408 (42-50), 1409 (50-55), 1410 (55-65),
1411 (67-75), 1412 (77-83), 1413 (85-88),
1414 (90-97), 1415A (100-103), 1415B (103-107),
1416 (109-116), 1417 (118-125), 1418 (125-131),
1419 (132-138);
Texture : MOD PHYRIC, FINE-GRAINED, GLASSY RIMS AT PCES
1404+1405+1411+1412+1414, PCE 1413 CONSISTS OF
MAINLY GLASS, THE GLASS IS PARTLY ALTERED TO DARK
GREEN SMEC;
Structure : VERY FRACTURED, FRACTURES AND VEINLETS ARE FILLED
WITH LIGHT TO DARK GREEN SMEC, THE VEINLETS CUT THE
SAMPLE LIKE A NET LEAVING ONLY BRECCIA-LIKE PCES OF
FRESH MATERIAL (PCES 1403-1411), BESIDE THE
GLASSY SAMPLE 1413 HEMATITE OCCURS IN A SMEC VEIN
AT PCE 1415;
Alteration : EXT;
Comments : CONTINUATION OF 63-4;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
Minerals Replaced: OL
HEMATITE
IN PCE 1413 AND 1416 IN ALTERED GLASS;
PYRITE
PYRITE IN PCES 1415+1417+1419 (WITH FE.OX
(HEMATITE?));
Leg : 70 Top/Bottom Interval(mm): 1400/1500 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 774.50
Core: 64 Top of Core Depth (m) : 773.00
Sect: 1 Top of Section Depth(m): 774.40
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 1420 (140-148), 1421 (147-150);
Texture : APHYRIC TO SPARSELY PHYRIC, MEDIUM-GRAINED;
Structure : MASSIVE AND NOT FRACTURED;
Alteration : MOD;
Comments : NEW UNIT BEGINNING WITH PCE 1420, MAY BE THIS NEW
UNIT BEGINS SOME PCES ABOVE 1420 AT 1418 BUT CANNOT
BE DETERMINED DEFINITELY;
Phenocrysts: OLIVINE
Leg : 70 Top/Bottom Interval(mm): 0/1480 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 775.98
Core: 64 Top of Core Depth (m) : 773.00
Sect: 2 Top of Section Depth(m): 774.50
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 1422 (0-16), 1423 (18-28), 1424 (30-34),
1425 (34-43), 1426 (45-47), 1427 (47-51),
1428 (53-60), 1429 (61-70), 1430 (71-77),
1431 (79-82), 1432 (84-87), 1433 (90-97),
1434 (97-99), 1435 (101-115), 1436 (115-124),
1437 (126-134), 1438 (126-144), 1439 (146-148);
Texture : APHRYIC TO OL SPARSELY PHYRIC, MEDIUM-GRAINED,
NO GLASSY OR ALTERED GLASSY RIM MATERIAL, PCE
1438 IS SOME WHAT FINER GRAINED;
Structure : MASSIVE APPEARANCE, MORE FRACTURES IN PCE 1438 AND
THIN VEINLETS OF PYRITE ON CUT AND UNCUT SURFACES
WITH CONTINUOUS PYRITE FOR SEVERAL MM, DARK GREEN
SMEC IS PRESENT COATING ALL FRACTURES, DISSEMINATED
PYRITE IS INTIMATELY ASSOCIATED WITH THIS SMEC-
SOMETIMES AS AGGREGATES UP TO 3MM ACROSS (AS IN PCE
1433) AND SOMETIMES AS INDIVIDUAL CRYSTALS (AS IN
PCE 1423), OCCASIONAL FRACTURES;
Comments : CONTINUATION OF 64-1, THIS IS PROBABLY THE
BEGINNING OF ANOTHER UNIT WHICH CONTINUES IN 64-3
(BOUNDARY BETWEEN PCES 1437 AND 1438?);
Phenocrysts: OLIVINE
Replacement: SMECTITE
DARK GREEN IN COLOR;
PYRITE
INTIMATELY ASSOCIATED WITH SMEC, SOMETIMES AS
AGGREGATES UP TO 3MM ACROSS OR SOMETIMES AS
INDIVIDUAL CRYSTALS;
Leg : 70 Top/Bottom Interval(mm): 0/ 850 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 776.85
Core: 64 Top of Core Depth (m) : 773.00
Sect: 3 Top of Section Depth(m): 776.00
LITHOLOGY: OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 1440 (2-7), 1441 (9-14), 1442 (15-23),
1443 (25-34), 1444 (36-42), 1445 (43-54),
1446 (58-62), 1447 (65-72), 1448 (73-79),
1449 (80-85);
Texture : SPARSELY PHYRIC, PCES 1447+1449 ARE MORE PHYRIC,
FINE-GRAINED, MICROBRECCIA IN PART OF PCE 1444 AND
1445;
Structure : STRONGLY FRACTURED, PCES 1447+1449 ARE MORE MASSIVE
AND LESS FRACTURED, FRACTURES WITH VEIN FILLINGS
AND FRACTURE COATINGS OF DARK GREEN SMEC AND PYRITE
(PARTICULARLY PCES 1445+1442);
Alteration : IN PCE 1440 THERE IS A 1CM WIDE BLEB OF WHITE
ZEOLITE? AND PYRITE;
Phenocrysts: OLIVINE
Replacement: SMECTITE
DARK GREEN IN COLOR;
PYRITE
ZEOLITE
1CM WIDE BLEB OF WHITE ZEOLITE?;
Leg : 70 Top/Bottom Interval(mm): 870/1450 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 777.45
Core: 64 Top of Core Depth (m) : 773.00
Sect: 3 Top of Section Depth(m): 776.87
LITHOLOGY: OL-PLAG MOD PHYRIC BASALT;
MASSIVE;
Piece No. : PCE 1450 (87-92), 1451 (94-99), 1452 (100-110),
1453 (112-115), 1454 (116-118), 1455 (120-128),
1456 (130-135), 1457 (132-137), 1458 (139-145);
Texture : MOD PHRYIC, MEDIUM-GRAINED;
Structure : MASSIVE LOOKING WITH ONLY A FEW FRACTURES, GREEN
SMEC AND PYRITE IN VEINLETS AND FRACTURE COATINGS
(AS IN 1455 AND 1456);
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/ 820 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 778.32
Core: 64 Top of Core Depth (m) : 773.00
Sect: 4 Top of Section Depth(m): 777.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
MASSIVE;
Piece No. : PCE 1459 (0-8?), 1460 (9-14), 1461 (16-24),
1462 (27-35), 1463 (36-43), 1464 (45-50),
1465 (51-63), 1466 (64-70), 1467 (73-81);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : MASSIVE LOOKING WITH ONLY A FEW FRACTURES, PYRITE
VEINLETS IN 1461, DARK GREEN SMEC IN FRACTURES WITH
SCATTERED PYRITE CRYSTALS;
Comments : CONTINUATION OF LOWER HALF OF 64-3;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
GREEN SMEC;
PYRITE
SCATTERED PYRITE XTALS;
Leg : 70 Top/Bottom Interval(mm): 840/1500 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 779.00
Core: 64 Top of Core Depth (m) : 773.00
Sect: 4 Top of Section Depth(m): 778.34
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1468 (84-93), 1469 (95-100), 1470 (101-109),
1471 (110-135), 1472 (136-143), 1473 (144-150);
Texture : MOD PHYRIC, FINE-GRAINED, GLASS IN 1473;
Structure : STRONGLY FRACTURED, DARK GREEN SMEC IN VEINLETS,
WHITE ZEOLITE(?) BLEB 5MM ACROSS ASSOCIATED WITH
SMEC VEIN IN A 1471 PCE;
Leg : 70 Top/Bottom Interval(mm): 0/1400 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 783.40
Core: 65 Top of Core Depth (m) : 782.00
Sect: 1 Top of Section Depth(m): 782.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1474 (0-10), 1475 (11-23), 1476 (23-27),
1477 (28-30), 1478 (31-34), 1479 (35-55),
1480 (56-64), 1486 (121-130), 1487 (130-140);
Texture : MOD PHYRIC, FINE-GRAINED, GLASSY RIM IN PCE 1486;
Structure : STRONGLY FRACTURED, ABUNDANT VEINLETS OF DARK
GREEN SMEC WITH SCATTERED PYRITE GRAINS, WHOLE
CORE SECTION PROBABLY REPRESENTS PILLOWS;
Comments : CONTINUATION OF LITHOLOGY IN LOWER HALF OF 64-4;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
DARK GREEN SMEC;
PYRITE
SCATTERED PYRITE GRAINS;
Leg : 70 Top/Bottom Interval(mm): 650/1200 Analyst: Barrett, T.
Hole: 504B Sample Midpoint (m) : 783.20
Core: 65 Top of Core Depth (m) : 782.00
Sect: 1 Top of Section Depth(m): 782.65
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 1481 (65-70), 1482 (71-77), 1483 (79-85),
1484 (89-97), 1485 (100-119);
Texture : SAME LITHOLOGY BUT BRECCIATED WITH ANGULAR
FRAGMENTS OF 1-20MM SIZE IN A GREEN SMEC MATRIX,
THE BRECCIA APPEARS TO BE LOCALIZED AS ZONES WITHIN
THE STRONGLY FRACTURED BASALT, FRAGMENTS OF LIGHTER
GREEN SMEC (ALTERED GLASS?) ARE ALSO PRESENT WITHIN
THE BRECCIA AND ARE SURROUNDED BY THE DARK GREEN
SMEC;
Leg : 70 Top/Bottom Interval(mm): 0/1480 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 792.48
Core: 66 Top of Core Depth (m) : 791.00
Sect: 1 Top of Section Depth(m): 791.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT AND BASALTIC BRECCIA;
Piece No. : PCE 1488 (1-5), 1489 (8-11), 1490 (13-17),
1491 (20-29), 1492 (32-44), 1493 (46-52),
1494 (53-56), 1495 (58-65), 1496 (69-72),
1497 (75-81), 1498 (82-87), 1499 (87-93),
1500 (94-101), 1501 (102-112), 1502 (114-120),
1503 (120-126), 1504 (131-140), 1505 (144-148);
Texture : MOD PHYRIC, FINE-GRAINED, BRECCIA WITH SMEC MATRIX
IN PCES 1491-1493+1498+1499+1502+1489, GLASS
RIMS IN 1502;
Structure : HIGHLY FRACTURED WITH MANY VEINLETS OF SMEC, SMEC
IN VEINS IN PCES 1491+1498+1497+1496+1499+1502-1504;
Comments : SAME LITHOLOGY AS CORE 65;
Phenocrysts: OLIVINE
PLAGIOCLASE
Replacement: SMECTITE
Leg : 70 Top/Bottom Interval(mm): 0/ 510 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 793.01
Core: 66 Top of Core Depth (m) : 791.00
Sect: 2 Top of Section Depth(m): 792.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1506 (1-7), 1507 (7-11), 1508 (14-18),
1509 (20-29), 1510 (32-49);
Texture : MOD PHYRIC, FINE-GRAINED;
Structure : SMEC VEINS IN 1506+1507;
Alteration : MOD;
Comments : PCES ARE CONTINUATION OF SECTION 1 LITHOLOGY, DRILL
GRAVEL AT 1510;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
ZEOLITE
IN SMEC VEINS IN PCES 1506+1507;
Leg : 70 Top/Bottom Interval(mm): 510/1490 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 793.99
Core: 66 Top of Core Depth (m) : 791.00
Sect: 2 Top of Section Depth(m): 793.01
LITHOLOGY: OL-CPX(?) SPARSELY PHYRIC BASALT;
Piece No. : PCE 1511 (51-55), 1512 (55-62), 1513 (62-67),
1514 (66-72), 1515 (72-78), 1516 (80-86),
1517 (86-93), 1518 (94-99), 1519 (99-109),
1520 (110-120), 1521 (120-129), 1522 (130-136),
1523 (136-142), 1524 (143-149);
Texture : SPARSELY PHYRIC, MEDIUM-GRAINED;
Structure : MASSIVE UNIT, NEARLY VERTICAL FRACTURES ARE SMEC
COATED AND CONTINUOUS FROM ONE PCE TO THE NEXT,
THESE FRACTURES ALSO CONTAIN SCATTERED PLATES AND
CLUSTERS OF PYRITE CRYSTALS;
Alteration : MOD
MASSIVE UNIT IS STAINED YELLOW-BROWN ON UNCUT
SURFACES;
Comments : NEW UNIT STARTS AT PCE 1511 AND CONTINUES THROUGH
REMAINDER OF CORE;
Phenocrysts: OLIVINE
CLINOPYROXENE
ID UNCERTAIN;
Replacement: PYRITE
SMECTITE
Leg : 70 Top/Bottom Interval(mm): 0/ 250 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 800.25
Core: 67 Top of Core Depth (m) : 800.00
Sect: 1 Top of Section Depth(m): 800.00
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCE 1525 (0-25);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Alteration : MOD;
Comments : THIS BASALT IS SLIGHTLY DIFFERENT FROM 66-2, DUE
TO POOR RECOVERY IT IS HARD TO SAY IF ALL THESE
PCES BELONG TO THE SAME UNIT;
Phenocrysts: OLIVINE
Size(mm): <2
Leg : 70 Top/Bottom Interval(mm): 260/ 340 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 800.34
Core: 67 Top of Core Depth (m) : 800.00
Sect: 1 Top of Section Depth(m): 800.26
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1526 (26-34);
Texture : APHYRIC, FINE-GRAINED;
Alteration : MOD;
Comments : DUE TO THE POOR RECOVERY IT IS HARD TO SAY IF ALL
THESE PCES BELONG TO THE SAME UNIT;
Leg : 70 Top/Bottom Interval(mm): 350/1200 Analyst: Laverne, C.
Hole: 504B Sample Midpoint (m) : 801.20
Core: 67 Top of Core Depth (m) : 800.00
Sect: 1 Top of Section Depth(m): 800.35
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 1527 (35-60), 1528 (62-70), 1529 (72-96),
1530 (98-120);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE TO MEDIUM-GRAINED,
GREEN SMEC COATING ON 1528+1529;
Alteration : MOD
WHITE ZEOLITE ON 1528;
Comments : DUE TO THE POOR RECOVERY IT IS HARD TO SAY IF ALL
THESE PCES BELONG TO THE SAME UNIT;
Phenocrysts: OLIVINE
Replacement: SMECTITE
GREEN IN COLOR;
ZEOLITE
WHITE IN COLOR;
Leg : 70 Top/Bottom Interval(mm): 0/1100 Analyst: Schrader, E.L.
Hole: 504B Sample Midpoint (m) : 810.10
Core: 68 Top of Core Depth (m) : 809.00
Sect: 1 Top of Section Depth(m): 809.00
LITHOLOGY: OL SPARSELY PHYRIC TO APHYRIC BASALT;
Piece No. : PCE 1531 (1-9), 1532 (10-21), 1533 (24-28),
1534 (31-38), 1535 (41-47), 1536 (49-66),
1537 (71-98), 1538 (102-110);
Texture : SPARSELY PHYRIC TO APHYRIC, FINE TO MEDIUM-GRAINED,
UNCUT SURFACES OFTEN COATED OR DUSTED WITH GREEN
SMEC, HIGHLY BRECCIATED IN ZONES;
Structure : HIGHLY FRACTURED IN ZONES, FRACTURES FILLED OR
COATED WITH GREEN SMEC AND PLATES OF PYRITE
CRYSTALS, <1.0MM THICK SMEC VEINS IN 1537+1535+
1532;
Alteration : MOD;
Comments : CONTINUATION OF THE LATTER PART OF CORE 67, POOR
RECOVERY MAKES LITHOLOGIC INTERPRETATION
DIFFICULT;
Phenocrysts: OLIVINE
Replacement: SMECTITE
IN PCES 1534-1538+1532;
PYRITE
WITH SMEC IN PCE 1534-1538+1532;
ZEOLITE
IN PCES 1532+1535+1537;
Leg : 70 Top/Bottom Interval(mm): 0/1050 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 819.05
Core: 69 Top of Core Depth (m) : 818.00
Sect: 1 Top of Section Depth(m): 818.00
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 1539 (0-12), 1540 (16-21), 1541 (24-28),
1542 (31-53), 1543 (55-62), 1544 (66-73),
1545 (73-81), 1546 (83-92), 1547 (94-105);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE TO MEDIUM-GRAINED;
Structure : THE ROCK IS HIGHTLY FRACTURED, FRACTURES ARE FILLED
WITH DARK GREEN SMEC AND PYRITE IN ALL PCES;
Alteration : MOD;
Comments : CONTINUATION OF 68-1, THIS "UNIT" ENDS POSSIBLY
AFTER 1847;
Phenocrysts: OLIVINE
Replacement: SMECTITE
DARK GREEN;
PYRITE
ZEOLITE
AT 1547;
Leg : 70 Top/Bottom Interval(mm): 1070/1250 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 819.25
Core: 69 Top of Core Depth (m) : 818.00
Sect: 1 Top of Section Depth(m): 819.07
LITHOLOGY: OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCE 1548 (107-125);
Texture : SPARSELY TO MOD PHYRIC, FINE-GRAINED, UNCUT
SURFACES COATED WITH GREEN SMEC;
Alteration : MOD
GREEN SMEC COATING AND PATCHES OF PYRITE ON UNCUT
SURFACES;
Comments : DUE TO THE LOW RECOVERY IT IS NOT OBVIOUS IF THE
TWO DIFFERENT KINDS OF BASALT BELONG TO
DIFFERENT UNITS;
Phenocrysts: OLIVINE
Replacement: SMECTITE
GREEN IN COLOR;
PYRITE
Leg : 70 Top/Bottom Interval(mm): 0/ 160 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 827.16
Core: 70 Top of Core Depth (m) : 827.00
Sect: 1 Top of Section Depth(m): 827.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1549 (0-16);
Texture : MOD PHYRIC, FINE TO MEDIUM-GRAINED;
Structure : HIGHLY FRACTURED, FRACTURES AND VEINLETS (<3MM)
FILLED WITH DARK GREEN SMEC AND LITTLE PYRITE;
Alteration : EXT;
Comments : CONTINUATION OF 69-1?;
Phenocrysts: PLAGIOCLASE
OLIVINE
Replacement: SMECTITE
DARK GREEN;
PYRITE
LITTLE PYRITE;
Leg : 70 Top/Bottom Interval(mm): 170/ 400 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 827.40
Core: 70 Top of Core Depth (m) : 827.00
Sect: 1 Top of Section Depth(m): 827.17
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 1550 (17-26), 1551 (28-37), 1552 (37-40);
Texture : LARGE PCES (MAX 30 BY 30MM) OF FINE-GRAINED OL-PLAG
SPARSELY TO MOD PHYRIC BASALT INBEDDED IN GRAYISH
GREEN ALTERED MATERIAL (SMEC);
Alteration : EXT;
Leg : 70 Top/Bottom Interval(mm): 400/ 750 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 827.75
Core: 70 Top of Core Depth (m) : 827.00
Sect: 1 Top of Section Depth(m): 827.40
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 1553 (41-55), 1554 (55-63), 1555 (65-75);
Texture : FINE-GRAINED SPARSELY PHYRIC, FINE TO MEDIUM-
GRAINED APHYRIC TO SPARSELY PHYRIC;
Structure : DARK SMEC IN SMALL VEINLETS;
Alteration : MOD;
Phenocrysts: OLIVINE
Replacement: SMECTITE
DARK, IN SMALL VEINLETS AND ON UNCUT SURFACES;
PYRITE
Leg : 70 Top/Bottom Interval(mm): 770/ 850 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 827.85
Core: 70 Top of Core Depth (m) : 827.00
Sect: 1 Top of Section Depth(m): 827.77
LITHOLOGY: OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 1556 (77-82), 1557 (83-85);
Texture : SPARSELY PHYRIC, FINE TO MEDIUM-GRAINED, LEFT
CONTACT PART OF 1557 IS BRECCIATED;
Structure : SEPARATED FROM PCE 1558 BY A DARK GREEN SMEC? VEIN
(ABOUT 10MM);
Alteration : MOD;
Phenocrysts: OLIVINE
Replacement: SMECTITE
DARK GREEN;
Leg : 70 Top/Bottom Interval(mm): 850/1250 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 828.25
Core: 70 Top of Core Depth (m) : 827.00
Sect: 1 Top of Section Depth(m): 827.85
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCE 1558 (85-92), 1559 (94-100), 1560 (101-123);
Texture : MOD PHYRIC, PCES 1558+1559 ARE FINE-GRAINED,
PCE 1560 IS MEDIUM-GRAINED, PILLOW RIMS PRESENT
(CHILLED) IN PCES 1558+1559;
Structure : PCES 1558+1559 ARE FRACTURED, SMEC VEINS IN PCE
1560;
Alteration : MOD;
Phenocrysts: OLIVINE
Replacement: SMECTITE
Leg : 70 Top/Bottom Interval(mm): 1270/1430 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 828.43
Core: 70 Top of Core Depth (m) : 827.00
Sect: 1 Top of Section Depth(m): 828.27
LITHOLOGY: OL-PLAG-CPX DOLERITE;
PCE 1562 IS MASSIVE;
ID UNCERTAIN FOR DOLERITE;
Piece No. : PCE 1561 (127-133), 1562 (137-143);
Texture : DOLERITE, COARSE-GRAINED;
Structure : PCE 1562 IS MASSIVE, SMEC VEINS, PCE 1561 HAS A
THICK (5-10MM) LIGHT TO DARK-GREEN SMEC VEIN;
Alteration : MOD;
Phenocrysts: OLIVINE
Size(mm): TO 3
PLAGIOCLASE
Size(mm): TO 2
CLINOPYROXENE
Replacement: SMECTITE
Minerals Replaced: OL
LIGHT TO DARK GREEN SMEC IN VEIN;
Leg : 70 Top/Bottom Interval(mm): 0/ 400 Analyst: Hubberten, H.-W.
Hole: 504B Sample Midpoint (m) : 828.90
Core: 70 Top of Core Depth (m) : 827.00
Sect: 2 Top of Section Depth(m): 828.50
LITHOLOGY: OL-PLAG-CPX DOLERITE;
MASSIVE;
Piece No. : PCE 1563 (0-6), 1564 (9-21), 1565 (21-27),
1566 (30-39);
Texture : DOLERITE, COARSE-GRAINED;
Structure : MASSIVE, PCE 1565 HAS A VEIN WITH DARK-GREEN SMEC
AND ZEOLITE?;
Alteration : MOD
ALTERATION OF GNDMASS? IN ALL PCES;
Comments : CONTINUATION OF 70-1;
Phenocrysts: OLIVINE
PLAGIOCLASE
CLINOPYROXENE
Replacement: SMECTITE
Minerals Replaced: OL
SMEC IS VISIBLE AS ALTERATION OF GNDMASS? IN ALL
PCES;
ZEOLITE
ID UNCERTAIN;
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