Leg : 82 Top/Bottom Interval(mm): 0/ 200 Analyst: Neuser, R.
Hole: 564 Sample Midpoint (m) : 9.73
Core: H 1 Top of Core Depth (m) : 0.00
Sect: CC Top of Section Depth(m): 9.63
LITHOLOGY: APHYRIC TO OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1A (0-9), 1B (9-18);
Texture : APHYRIC TO SPARSELY PHYRIC,FINE-GRAINED;
Alteration : FRESH TO MOD
Comments : GRAY BASALT(7.5YR N5/0),ALTERED BASALT IS GRAYISH-
BROWN(2.5YR N5/2);
Vesicles : Size(mm): <1 Percent: <1
Location: Filling: CLAY.MINS
Shape : ROUND
RARE CLAY.MIN-FILLED ROUND VESICLES;
Phenocrysts: OLIVINE ( <1%)
Size(mm): <1.5
OL PHENO RESIDUES ARE FILLED WITH BROWN CLAY.MIN,
EUHEDRAL TO ANGULAR;
PLAGIOCLASE ( <2%)
Size(mm): <2
PLAG GLOMEROPHYRIC CLUSTERS;
Replacement: CLAY MINERALS
Minerals Replaced: OL
BROWN CLAY.MINS REPLACE OL;
CLAY MINERALS
CLAY.MINS FILL VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 285.50
Core: 1 Top of Core Depth (m) : 284.00
Sect: 1 Top of Section Depth(m): 284.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-5), 2 (7-13), 3 (15-29), 4 (31-43),
5 (45-50), 6 (51-65), 7 (66-80), 8A (82-86),
8B (85-96), 9 (97-106), 10A (108-114),
10B (114-118), 10C (118-120), 11A (123-130),
11B (131-138), 12A (140-145), 12B (145-150);
Texture : APHYRIC,FINE-GRAINED,NO GLASS PRESENT,PILLOW MARGINS
(APHANITIC) AT 65+140-150CM;
Structure : PILLOW BASALT,CALCITE VEINS,FRACTURES;
Alteration : SLIGHT TO MOD
OL REPLACED,ALTERATION ALONG FRACTURES & ADJACENT
TO VEINS(OFTEN APPEARS AS AN ALTERATION ZONE
RIMMING A FRESHER ONE),EXCELLENT EXAMPLES IN PCES
12A+12B (140-150CM);
MOD
INTERVALS 19-22CM & 30-33CM + PCE 12;
Comments : GRAY(7.5YR N5/0) BASALT,ALTERED BASALT IS LIGHT
BROWNISH-GRAY(10YR 6/2),PILLOW MARGIN AT 140-150CM
IS LIGHT GRAY(7.5YR N6/0);
Vesicles : Size(mm): TO 2 Percent:
Location: Filling: CALCITE,CLAY.MIN
Shape : ROUND
SPARSELY SCATTERED VESICLES SOMETIMES FILLED WITH
CALCITE & SOMETIMES WITH CLAY.MINS;
Phenocrysts: OLIVINE
Size(mm): TO 1.5
OL ID UNCERTAIN-MAY BE PRESENT AS DARK ORANGE-
BROWN CLAY.MIN RESIDUE,ANHEDRAL TO SUBHEDRAL
PATCHES WHICH ARE SPARSELY SCATTERED,MICROPHENOS;
Replacement: CALCITE
CALCITE FILLS VEINS & SOMETIMES FILL VESICLES;
CLAY MINERALS
CLAY.MINS SOMETIMES FILL VESICLES;
CLAY MINERALS
Minerals Replaced: OL
DARK ORANGE-BROWN CLAY.MIN RESIDUE(POSSIBLY OL);
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 564 Sample Midpoint (m) : 287.00
Core: 1 Top of Core Depth (m) : 284.00
Sect: 2 Top of Section Depth(m): 285.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 1 (1-9), 2A (10-15), 2B (15-20), 3A (21-29),
3B (29-35), 3C (35-45), 4 (46-50), 5A (51-61),
5B (61-70), 5C (70-74), 5D (75-85), 5E (85-93),
6 (94-110), 7A (112-119), 7B (119-121),
7C (122-126), 8A (127-132), 8B (132-139),
9A (139-145), 9B (145-150);
Texture : APHYRIC,FINE-GRAINED,SOMETIMES VARIOLITIC,APHANITIC
PILLOW MARGINS,SOME NARROW GLASS RIMS;
Structure : PILLOW BASALT,LIMESTONE-CALCITE VEIN IN PCE 3A;
Alteration : MOD
OL ALTERED;
FRESH
PCE 3C;
Comments : GRAY(7.5YR N6/0) BASALT,ALTERED BASALT IS DARKER-
(7.5YR N6/1),SOME BASALT ALTERED PALE BROWN
(10YR 6/3),INTERPILLOW GLASS BRECCIA IN PCES 7A-7C;
Vesicles : Size(mm): Percent: TO 5
Location: Filling:
Shape : IRREGULAR
IRREGULAR UNFILLED VESICLES;
Phenocrysts: OLIVINE ( TO 2%)
Size(mm): 0.5-1
OL MICROPHENOS ALTERED TO BROWN CLAY.MINS;
Replacement: PALAGONITE
Minerals Replaced: GLASS
PALAGONITE RIMS ON PCES 7A-7C;
CALCITE
CALCITE VEINS;
CLAY MINERALS
Minerals Replaced: OL
OL REPLACED BY BROWN CLAY.MINS;
Leg : 82 Top/Bottom Interval(mm): 0/1150 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 288.15
Core: 1 Top of Core Depth (m) : 284.00
Sect: 3 Top of Section Depth(m): 287.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (0-9), 2A (10-16), 2B (17-20), 2C (20-22),
3A (23-33), 3B (33-36), 3C (37-44), 4A (46-52),
4B (51-53), 4C (52-57), 5A (58-63), 5B (63-68),
6 (71-78), 7 (80-90), 8A (94-100), 8B (102-106),
9 (107-115);
Texture : APHYRIC,FINE-GRAINED,SOMETIMES VARIOLITIC,GLASSY
MARGINS GRADING INTO A THIN ZONE OF APHANITIC
BASALT WHICH THEN BECOMES VARIOLITIC;
Structure : PILLOW BASALT,CALCITE VEINS & FRACTURES,GLASS IN
CRACKS & FRACTURES;
Alteration : MOD
PCES 1-2A+4A-6;
FRESH TO MOD
PCES 2B-3C+7-9,OL ALTERED,ALTERATION ALONG VEINS &
FRACTURES & PILLOW MARGINS,PALAGONITIZED GLASS IN
CRACKS & FRACTURES OF RIND,ALTERATION ZONES;
Comments : GRAY TO BROWNISH(7.5YR,N5/0 TO 10YR 5/1) BASALT
DEPENDING UPON EXTENT OF ALTERATION,ALTERATION ZONES
MAY APPEAR AS BROWNISH-YELLOW TO YELLOW(10YR 6/6 TO
10YR 7/6),NEAR GLASSY MARGINS COLOR OF BASALT IS
VERY DARK-GRAY(7.5YR,N3/1) & COLOR NEAR VARIOLITIC
ZONE IS YELLOWISH-BROWN(10YR 5/6 TO 10YR 5/8)
GRADING TO GRAY(7.5YR,N5/0);
Vesicles :
Location: Filling: CLAY.MINS
Shape : ROUND,IRREG
VESICLES ARE SPARSELY SCATTERED & ROUNDED WITH
SOME LINED WITH CLAY.MINS & OTHERS COMPLETELY
FILLED,SOME VESICLES IRREGULAR & CONCENTRATED IN
PILLOW MARGIN(58-78CM) HOWEVER THE MAJORITY IN THI
ZONE ARE EMPTY;
Phenocrysts: OLIVINE ( TO 2%)
Size(mm): TO 2
OL MICROPHENOS ALTERED TO DARK ORANGE-BROWN
CLAY.MINS,ANHEDRAL;
Replacement: CLAY MINERALS
Minerals Replaced: OL
DARK ORANGE-BROWN CLAY.MINS REPLACE OL;
CLAY MINERALS
CLAY.MINS FILL SOME VESICLES;
CALCITE
CALCITE VEINS;
PALAGONITE
Minerals Replaced: GLASS
PALAGONITIZED GLASS OBSERVED IN CRACKS & FRACTURES
OF THE GLASSY RIND;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 564 Sample Midpoint (m) : 294.50
Core: 2 Top of Core Depth (m) : 293.00
Sect: 1 Top of Section Depth(m): 293.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (1-5), 1B (5-9), 2A (13-17), 2B (17-21),
2C (21-25), 2D (25-28), 2E (29-33), 3A (36-40),
3B (40-43), 3C (43-47), 4A (50-53), 4B (53-55),
4C (55-70), 7 (105-115), 8A (117-122), 8B (122-125),
9 (127-133), 10A (135-140), 10B (140-144),
10C (144-149);
Texture : APHYRIC,FINE-GRAINED,PCES 1A+3B-3C+9 ARE COMPRISED
OF BLACK GLASS CLASTS IN A CALCITE MATRIX;
Structure : PILLOW BASALT,SOME CALCITE IN FRACTURES;
Alteration : FRESH
PCES 1A-1B+3B-3C+9;
MOD
INTERVAL 52-65CM,PCES 8B+10A-10C;
EXT
INTERVALS 4-9+65-70CM,PCES 2A-3A+4A+7-8A;
Comments : LIGHT BROWNISH-GRAY(2.5Y 6/2) BASALT;
Vesicles : Size(mm): 1-2 Percent: 1-2
Location: Filling:
Shape : ROUND,IRREG
VESICLES ARE EMPTY & ARE CONCENTRATED FOR THE MOST
PART NEAR PILLOW MARGINS;
Replacement: CALCITE
SOME CALCITE IN FRACTURES,CALCITE MATRIX IN
INTERVALS 0-4+41-48+128-130CM;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 564 Sample Midpoint (m) : 294.50
Core: 2 Top of Core Depth (m) : 293.00
Sect: 1 Top of Section Depth(m): 293.00
LITHOLOGY: BASALT BRECCIA;
Piece No. : PCES 5 (72-79), 6A (82-93), 6B (93-103);
Comments : ALTERED BASALT BRECCIA & ALT.GLAS IN CALCITE MATRIX,
PCES ANGULAR TO SUBROUNDED RANGING IN SIZE FROM
BARELY VISIBLE THRU 5MM(MOSTLY ALT.GLAS CLASTS),
BASALT FRAGMENTS 1.5-7CM(MOSTLY BASALT PCES & SOME
PARTLY ALT.GLAS CLASTS),ALT.GLAS FRAGMENTS ARE
BROWNISH-YELLOW IN COLOR(10YR 6/6) WHICH IS ALSO THE
COLOR THAT STAINS THE CALCITE MATRIX;
Replacement: CALCITE
CALCITE MATRIX;
UNIDENTIFIED
Minerals Replaced: GLASS
ALT.GLAS;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 564 Sample Midpoint (m) : 296.00
Core: 2 Top of Core Depth (m) : 293.00
Sect: 2 Top of Section Depth(m): 294.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-13), 2A (15-28), 2B (26-38), 3A (40-43),
3B (42-50), 3C (52-59), 4A (60-63), 4B (65-73),
4C (72-77), 4D (77-80), 5A (81-87), 5B (87-90),
5C (90-93), 5D (94-98), 5E (99-102), 6A (104-113),
6B (113-119), 6C (118-120), 7A (122-127),
7B (127-131), 7C (133-135), 8 (135-149);
Texture : APHYRIC,FINE-GRAINED,GLASS CLASTS IN INTERVAL
86-104CM & GLASS ON PCE 3C,GLASS RIMS ON PCES 4A-4D+
6A;
Structure : PILLOW BASALT;
Alteration : FRESH
PCES 1-3B+5A-5E;
MOD
PCES 3C-4A+6A+8;
EXT
PCES 4B-4D+6B-7C;
Comments : GRAY(2.5Y N5/0) BASALT 0-58CM,48-58CM IS LIGHT
GRAYISH-BROWN(2.5Y 6/2),INTERVALS 60-83+106-150CM
ARE LIGHT OLIVE-BROWN(2.5Y 5/4);
Vesicles : Size(mm): Percent: <1
NO VESICLES IN INTERVAL 48-58CM EXCEPT ON PILLOW
MARGIN(WITH GLASS) AT 55-57CM;
Size(mm): TO 2 Percent: TO 5
Location: Filling:
Shape : ROUND
ROUNDED EMPTY VESICLES NEAR PILLOW MARGINS(GLASS
RIMS) IN INTERVALS 60-83+106-150CM;
Size(mm): TO 1 Percent: TO 1
Location: Filling: CALCITE
Shape : ROUND
FILLED VESICLES IN INTERVALS 60-83+106-150CM;
Replacement: CALCITE
CALCITE FILLS SOME VESICLES IN INTERVALS 60-83+106
-150CM,SPARRY CALCITE & LIMESTONE/CALCITE IN SOME
GLASS CLASTS IN PCES 5B-5E;
Leg : 82 Top/Bottom Interval(mm): 0/1250 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 297.25
Core: 2 Top of Core Depth (m) : 293.00
Sect: 3 Top of Section Depth(m): 296.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (1-6), 1B (7-10), 1C (11-15), 2 (18-25),
3A (28-30), 3B (32-35), 4 (36-50), 5 (52-73),
6 (75-107), 7A (108-127), 7B (118-125);
Texture : APHYRIC,FINE-GRAINED,GLASSY MARGINS GRADE INTO A
ZONE OF APHANITIC BASALT & IN TURN TO A VARIOLITIC
ZONE;
Structure : PILLOW BASALT,CALCITE VEINS,FRACTURES;
Alteration : ALTERATION OCCURS ADJACENT TO CALCITE VEINS,
ALTERATION APPEARS AS MOTTLING OF INTENSITY OF
GRAYS,ALTERED OL;
Comments : FRESHER BASALT IS GRAY(7.5YR N5/0),MOTTLING VARIES
FROM 7.5YR N5/0 TO 7.5YR N6/0,VERY DARK-GRAY
APHANITIC ZONES(7.5YR N3/1),VARIOLITIC ZONES ARE
VARIABLE FROM YELLOWISH-BROWN(10YR 5/6) TO BROWNISH-
YELLOW(7.5YR 6/6) TO GRAY(7.5YR,N5/0);
Vesicles :
Location: Filling: CLAY.MIN,CALCITE
Shape : ROUND,IRREG
VESICLES ARE ROUND OR IRREGULAR & LINED WITH
CLAY.MINS &/OR FILLED WITH CALCITE,MOST VESICLES
ARE EMPTY,MOST ARE CONCENTRATED IN THE PILLOW
MARGINS;
Phenocrysts: OLIVINE ( TO 2%)
Size(mm): TO 1
OL PRESENT AS MICROPHENOS ALTERED TO FORM DARK
ORANGE-BROWN RESIDUE,ANHEDRAL;
Replacement: CLAY MINERALS
Minerals Replaced: OL
DARK ORANGE-BROWN CLAY.MINS;
CALCITE
CALCITE FILLS VEINS & SOME VESICLES;
CLAY MINERALS
CLAY.MINS LINE SOME VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 564 Sample Midpoint (m) : 303.50
Core: 3 Top of Core Depth (m) : 302.00
Sect: 1 Top of Section Depth(m): 302.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 1 (0-15), 2A (15-23), 2B (23-28), 2C (28-39),
2D (39-45), 3A (47-51), 3B (51-58), 3C (58-65),
4A (67-74), 4B (74-85), 5 (86-93), 6 (94-98),
7 (101-113), 8A (115-121), 8B (122-125),
9A (127-132), 9B (133-140), 10A (140-146),
10B (146-150);
Texture : APHYRIC,FINE-GRAINED,GLASS RIMS WITH CALCITE AT
68-69CM,GLASS WITH VEINS AT 96-99CM;
Structure : PILLOW BASALT,CALCITE IN FRACTURES,CALCITE/LIMESTONE
VEINS;
Alteration : FRESH
PCE 6;
MOD
PCES 2A-2C+9A-10B;
EXT
PCES 1+4A-5+7-8B;
Comments : GRAY(2.5Y N5/0) BASALT,ALTERED BASALT IS YELLOWISH-
BROWN(2.5Y 6/4);
Vesicles : Size(mm): TO 3 Percent: TO 3
Location: Filling: CALCITE,CLAY.MIN
Shape : ROUND,IRREG
ROUND CALCITE-FILLED VESICLES AT ALTERED PILLOW
MARGINS,DARK-GREEN CLAY.MIN-FILLED IRREGULAR
VESICLES,ROUND & IRREGULAR EMPTY VESICLES OCCUR
ESPECIALLY NEAR PILLOW MARGINS;
Replacement: CALCITE
CALCITE FILLS SOME VESICLES & FRACTURES & VEINS;
CLAY MINERALS
DARK-GREEN CLAY.MINS FILL SOME VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 564 Sample Midpoint (m) : 305.00
Core: 3 Top of Core Depth (m) : 302.00
Sect: 2 Top of Section Depth(m): 303.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-11), 2A (13-17), 2B (17-22), 2C (17-20),
2D (20-22), 3A (24-38), 3B (38-47), 4 (49-55),
5A (57-67), 5B (66-75), 5C (73-78), 5D (78-86),
5E (85-94), 5F (94-100), 5G (102-110), 6 (111-115),
7A (118-136), 7B (137-149);
Texture : APHYRIC,FINE-GRAINED,GLASS RIMS GRADE INTO NARROW
APHANITIC & VARIOLITIC RIMS & THEN FINE-GRAINED
BASALT;
Structure : PILLOW BASALT,MINOR CALCITE VEINS;
Alteration : MOD
Comments : BASALT RANGES IN COLOR FROM GRAY(7.5YR N5/0) TO PALE
BROWN(10YR 6/3) DEPENDING UPON AMOUNT OF ALTERATION;
Vesicles : Size(mm): TO 1.5 Percent: TO 5
Location: Filling: CLAY.MINS
Shape : ROUND,IRREG
ROUND & IRREGULAR VESICLES ARE MOSTLY EMPTY BUT A
FEW ARE CLAY.MIN-FILLED;
Replacement: CALCITE
MINOR CALCITE VEINS;
CLAY MINERALS
CLAY.MINS FILL SOME VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 564 Sample Midpoint (m) : 306.50
Core: 3 Top of Core Depth (m) : 302.00
Sect: 3 Top of Section Depth(m): 305.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (3-9), 2A (11-18), 2B (18-20), 2C (20-23),
2D (23-27), 2E (27-30), 3A (32-40), 3B (41-47),
3C (47-55), 3D (55-63), 3E (63-67), 4A (68-75),
4B (75-89), 5 (91-99), 6 (101-109), 7 (110-122),
8A (125-135), 8B (135-141), 9 (142-149);
Texture : APHYRIC,FINE-GRAINED,GLASS IN PCES 2E+3D-3E+5 WITH
VARIOLITIC ZONES(VARIOLES <1.5MM IN DIAMETER);
Structure : PILLOW BASALT,FRACTURES,CALCITE-FILLED VEINS;
Alteration : MOD TO EXT
ALT.GLAS NEAR FRACTURES IN GLASSY MARGINS,BASALT
ALTERED NEAR FRACTURES & VEINS;
Comments : COLOR OF BASALT VARIES DUE TO ALTERATION FROM GRAY
TO GRAYISH BROWN(2.5Y,N5/0 TO 2.5Y,N5/2),PCES 7+9 AR
MADE UP OF SEVERAL PCES;
Vesicles : Size(mm): Percent: 0
NO VISIBLE VESICLES IN PCES 1-3E;
Size(mm): TO 1.5 Percent: 2
Location: Filling: CALCITE
Shape : ROUND
PCES 4A-9 HAVE HALF-FILLED VESICLES;
Replacement: CALCITE
CALCITE FILLS VEINS & HALF-FILLS VESICLES;
PALAGONITE
Minerals Replaced: GLASS
PALAGONITIZATION OF GLASS OCCURS NEAR FRACTURES;
Leg : 82 Top/Bottom Interval(mm): 0/ 500 Analyst: Drake, N.
Hole: 564 Sample Midpoint (m) : 307.00
Core: 3 Top of Core Depth (m) : 302.00
Sect: 4 Top of Section Depth(m): 306.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (2-8), 1B (8-14), 2 (15-20), 3 (22-30),
4A (32-35), 4B (35-38), 5 (40-43), 6 (46-50);
Texture : APHYRIC,FINE-GRAINED,SIMILAR TO CORES 3-1 THRU 3-3;
Structure : PILLOW BASALT;
Alteration : MOD
PCES 1A-1B+6;
FRESH
PCE 2;
FRESH TO MOD
PCES 3-4B WHERE OL(?) IS ALTERED TO BROWN
CLAY.MINS(?);
EXT
PCE 5;
Comments : COLOR OF BASALT VARIES DUE TO EXTENT OF ALTERATION
(FROM GRAY-7.5YR, N6/0 TO LIGHT BROWNISH GRAY-
2.5Y 6/2);
Vesicles : Size(mm): 1-2 Percent: 2-3
Location: Filling:
Shape : ROUND
EMPTY ROUNDED VESICLES IN PCES 1A-1B;
Size(mm): 1-2 Percent: 1-3
Location: Filling: CALCITE
Shape : ROUND
ROUNDED CALCITE-FILLED AS WELL AS EMPTY VESICLES
IN PCE 5;
Phenocrysts: OLIVINE ( 1-2%)
Size(mm): 1-2
ID OL UNCERTAIN,ALTERED TO BROWN CLAY.MINS(?);
Replacement: CALCITE
FILLS SOME VESICLES IN PCE 5;
CLAY MINERALS
Minerals Replaced: OL
ID CLAY.MINS & OL UNCERTAIN,BROWN IN PCES 3-4B;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 564 Sample Midpoint (m) : 312.50
Core: 4 Top of Core Depth (m) : 311.00
Sect: 1 Top of Section Depth(m): 311.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-15), 2A (16-22), 2B (22-26), 2C (26-32),
2D (32-35), 3 (37-46), 4A (49-54), 4B (54-58),
4C (58-65), 4D (65-72), 4E (72-77), 4F (77-79),
5A (82-85), 5B (85-90), 6 (91-105), 7 (106-114),
8A (115-122), 8B (123-127), 8C (127-135),
8D (135-140), 9A (142-145), 9B (141-149);
Texture : APHYRIC,FINE-GRAINED,PCES 7-8D ARE FINER-GRAINED
THAN REST OF SECTION,GLASS RIM ON PCE 8C;
Structure : PILLOW BASALT,CALCITE IN FRACTURES;
Alteration : FRESH TO MOD
PCES 1+4A-5B;
MOD
PCES 2A-3+7 & TOP 5CM OF PCE 6;
EXT
PCES 8A-8D & BOTTOM 8CM OF PCE 6;
FRESH
PCES 9A-9B;
Comments : BASALT VARIES IN COLOR DUE TO EXTENT OF ALTERATION
FROM GRAY TO LIGHT BROWNISH-GRAY(2.5Y N5/0-2.5Y N6/0
TO 2.5Y 6/2),PCE 2A IS BASALT BRECCIA IN A CALCITE
MATRIX,PCES 9A-9B ARE FRESH BLACK GLASS CLASTS IN A
CALCITE MATRIX;
Vesicles : Size(mm): Percent: 0
PCES 1+2B-5B ARE NON-VESICULAR;
Size(mm): 1-2 Percent: 1-2
Location: Filling:
Shape : ROUND,IRREG
PCES 7-8D HAVE EMPTY ROUND & IRREGULAR VESICLES;
Size(mm): 1-2 Percent: <1
Location: Filling: CALCITE
Shape : IRREGULAR
PCES 7-8D HAVE CALCITE-FILLED IRREGULAR VESICLES;
Phenocrysts: PLAGIOCLASE ( 5-10%)
Size(mm): 1-4
OLIVINE ( 1-2%)
Size(mm): 1-2
PLAG NEEDLES RANDOMLY ORIENTED IN RADIATING
CLUSTERS,OL(?) ALTERED TO BROWN CLAY.MINS(?);
Replacement: CLAY MINERALS
Minerals Replaced: OL
ID CLAY.MINS & OL UNCERTAIN;
CALCITE
CALCITE MATRIX IN PCES 2A+9A-9B,CALCITE FILLS
FRACTURES,CALCITE FILLED VESICLES IN PCES 7-8D;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 564 Sample Midpoint (m) : 314.00
Core: 4 Top of Core Depth (m) : 311.00
Sect: 2 Top of Section Depth(m): 312.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-15), 1B (14-19), 2 (20-25), 3A (27-31),
3B (32-36), 3C (35-48), 3D (48-53), 4A (55-59),
4B (59-65), 5A (65-77), 5B (77-82), 5C (83-86),
5D (86-92), 5E (92-95), 6A (96-107), 6B (107-111),
6C (110-117), 6D (117-124), 6E (124-126),
7A (130-133), 7B (133-141), 7C (140-150);
Texture : APHYRIC,FINE-GRAINED,CHILLED GLASSY MARGIN IN PCES
5A-5E;
Structure : PILLOW BASALT,FRACTURES FILLED WITH CALCITE;
Alteration : EXT
PCES 1A+5A-6A,GLASS ALTERED TO CLAY.MINS;
MOD
PCES 1B-4B+6B-7C;
Comments : GRAY TO LIGHT YELLOWISH-BROWN BASALT(2.5Y N5/0 TO
2.5Y 6/4),GLASS MARGINS ALTERED TO YELLOW(10YR 7/8)
& STRONG BROWN(7.5YR 5/6);
Vesicles : Size(mm): 1-2 Percent: 1-2
Location: Filling: CALCITE
Shape : IRREG,ROUND
ROUND & IRREGULAR VESICLES ARE FILLED WITH CALCITE
OR EMPTY;
Replacement: CLAY MINERALS
Minerals Replaced: GLASS
GLASS ALTERED TO YELLOW & STRONG BROWN CLAY.MINS;
CALCITE
CALCITE FILLS FRACTURES & SOME VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 564 Sample Midpoint (m) : 315.50
Core: 4 Top of Core Depth (m) : 311.00
Sect: 3 Top of Section Depth(m): 314.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 1A (1-7), 1B (8-15), 1C (15-20), 1D (19-26),
1E (26-35), 2A (35-40), 2B (40-43), 2C (43-47),
2D (47-51), 2E (52-58), 2F (58-62), 2G (63-66),
2H (66-72), 2I (73-77), 3A (78-81), 3B (82-86),
3C (85-87), 4A (88-97), 4B (97-103), 4C (103-104),
4D (103-107), 4E (107-116), 4F (117-122),
4G (123-128), 4H (128-131), 5A (132-140),
5B (140-149);
Texture : APHYRIC,FINE-GRAINED,GLASS IN PCES 2A-2I;
Structure : PILLOW BASALT,IRREGULAR CALCITE-FILLED INTER-
CONNECTING CAVITIES(5-15MM IN SIZE) IN PCE 1B;
Alteration : MOD
PCES 1A-1D+4A-4H;
EXT
PCES 1E+2F+3A-3C;
FRESH TO MOD
PCES 2A-2E+2G-2I+5A-5B;
Comments : BASALT VARIES IN COLOR DUE TO ALTERATION(RANGES FROM
GRAY-7.5YR N5/0 TO LIGHT BROWNISH-GRAY-2.5Y 6/2),
PCES 2A-2I ARE BLACK GLASS CLASTS(ANGULAR TO SUB-
ROUNDED IN CALCITE MATRIX WITH VERY PALE BROWN
LIMESTONE IN PLACES),IN PCE 1F LIMESTONE MATRIX IS
YELLOW,PCE 3B IS A BASALT CLAST IN CALCITE MATRIX
WITH LIMESTONE BAND WITH MORE BASALT IN THE BANDS;
Vesicles : Size(mm): Percent: <1
PCES 3A-5B;
Phenocrysts: OLIVINE ( 2-3%)
Size(mm): 1-2
ID UNCERTAIN,ALTERED TO BROWN CLAY.MINS;
OLIVINE ( <1%)
PCES 3A-5B;
Replacement: CALCITE
CALCITE FILLS CAVITIES,MATRIX IN PCES 2F+3B;
CLAY MINERALS
Minerals Replaced: OL
STRONG BROWN CLAY.MINS,ID UNCERTAIN;
UNIDENTIFIED
Minerals Replaced: GLASS
ALT.GLAS IN PCE 2F;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 564 Sample Midpoint (m) : 317.00
Core: 4 Top of Core Depth (m) : 311.00
Sect: 4 Top of Section Depth(m): 315.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-8), 1B (8-21), 1C (21-24), 1D (24-39),
2A (40-50), 2B (50-58), 2C (58-61), 2D (62-64),
2E (62-64), 2F (66-68), 2G (65-68), 3A (70-78),
3B (78-85), 3C (84-91), 3D (91-98), 3E (98-106),
3F (107-111), 3G (112-115), 3H (115-117),
3I (117-119), 4A (120-125), 4B (125-128),
4C (126-134), 4D (134-137), 4E (137-149);
Texture : APHYRIC,FINE-GRAINED,GLASS IN PCE 2A;
Structure : PILLOW BASALT,EXTENSIVE CALCITE-FILLED FRACTURES;
Alteration : MOD
PCES 1A-1D+3A-3D;
EXT
PCES 2A-2G+3E-4C;
FRESH TO MOD
PCES 4D+4E;
Comments : BASALT VARIES IN COLOR DUE TO ALTERATION FROM GRAY
TO LIGHT BROWNISH-GRAY(2.5Y N5/0 TO 2.5Y 6/2)
Vesicles : Size(mm): 1-2 Percent: <1
Location: Filling:
Shape : ROUND
EMPTY VESICLES MOSTLY IN HIGHLY ALTERED PARTS;
Replacement: CALCITE
CALCITE-FILLED FRACTURES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 321.50
Core: 5 Top of Core Depth (m) : 320.00
Sect: 1 Top of Section Depth(m): 320.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-3), 1B (2-8), 1C (8-11), 1D (13-17),
1E (18-21), 1F (22-24), 2 (25-45), 3A (47-53),
3B (53-60), 4 (63-66), 5A (70-78), 5B (78-88),
5C (88-95), 6A (98-102), 6B (103-108), 6C (108-116),
7A (118-122), 7B (122-127), 7C (127-132),
7D (132-137), 7E (135-142), 7F (142-147),
7G (146-149);
Texture : APHYRIC,FINE-GRAINED,BASALT GRADES FROM GLASSY TO
APHANITIC TO VARIOLITIC,GLASS IN PCES 3B+4+7B+7E+7G;
Structure : PILLOW BASALT,CALCITE VEINS,CALCITE PATCHES IN PCES;
Alteration : MOD TO EXT
BASALT ALTERED,OL ALTERED,PALAGONITIZATION OF
GLASS CLASTS,ALTERATION ADJACENT TO FRACTURES &
VARIOLITIC ZONES;
Comments : BASALT VARIES IN COLOR DUE TO ALTERATION FROM GRAY
(7.5YR N5/0) TO LIGHT YELLOWISH-BROWN(10YR 6/4) TO
BROWNISH-YELLOW(10YR 6/6),VARIOLITIC ZONES ARE
GRAYISH-BROWN(10YR 5/2),PCES 4+7D ARE GLASS CLASTS
WITH CALCITE MATRICES;
Vesicles : Size(mm): 1-2 Percent:
Location: Filling: CLAY.MIN,CALCITE
Shape : ROUND,IRREG
VESICLES ARE EITHER CLAY.MIN-LINED OR CALCITE-
FILLED & SPARSELY SCATTERED,CONCENTRATED IN
VARIOLITIC ZONES;
Phenocrysts: OLIVINE ( 1%)
OL MICROPHENOS & HIGHLY ALTERED TO DARK ORANGE-
BROWN UNIDENT.MINS;
Replacement: CALCITE
PCES 4+7D ARE GLASS CLASTS WITH CALCITE MATRICES,
CALCITE FILLS VEINS & SOME VESICLES,PATCHES OF
CALCITE PRESENT IN SOME PCES ALSO;
UNIDENTIFIED
Minerals Replaced: OL
DARK ORANGE-BROWN UNIDENT.MINS;
PALAGONITE
Minerals Replaced: GLASS
SMALLER GLASS CLASTS ALTERED TO PALAG;
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Neuser, R.
Hole: 564 Sample Midpoint (m) : 322.95
Core: 5 Top of Core Depth (m) : 320.00
Sect: 2 Top of Section Depth(m): 321.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (0-11), 2A (13-15), 2B (16-18), 2C (18-25),
2D (25-32), 2E (32-38), 2F (38-48), 2G (50-60),
3A (62-65), 3B (65-70), 4A (71-81), 4B (81-129),
5 (130-144);
Texture : APHYRIC,FINE-GRAINED,VARIOLITIC ZONE ABOVE GLASS IN
PCE 5;
Structure : PILLOW BASALT;
Alteration : FRESH TO MOD
OL REPLACED;
FRESH
GLASS;
Comments : BASALT RANGES IN COLOR FROM GRAY(7.5YR 5/0) TO
GRAYISH-BROWN(10YR 5/2) IN ALTERED AREAS;
Vesicles : Size(mm): TO 2 Percent: TO 5
Location: Filling: CALCITE,CLAY.MIN
Shape : ROUND,IRREG
VESICLES ARE PARTIALLY OR TOTALLY FILLED WITH
EITHER CALCITE OR CLAY.MINS;
Phenocrysts: OLIVINE ( 1%)
Size(mm): TO 1.5
OL MOSTLY REPLACED BY A REDDISH-BROWN CLAY.MIN;
Replacement: CALCITE
CALCITE FILLS SOME VESICLES;
CLAY MINERALS
CLAY.MINS FILL SOME VESICLES;
CLAY MINERALS
Minerals Replaced: OL
REDDISH-BROWN CLAY.MIN REPLACES OL;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 564 Sample Midpoint (m) : 324.50
Core: 5 Top of Core Depth (m) : 320.00
Sect: 3 Top of Section Depth(m): 323.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (3-7), 2 (10-20), 3A (21-24), 3B (26-28),
3C (30-34), 4A (37-42), 4B (42-48), 4C (48-55),
4D (54-62), 4E (62-67), 4F (67-78), 5A (80-84),
5B (84-90), 5C (90-100), 5D (100-108), 5E (108-112),
5F (112-120), 5G (120-128), 5H (128-136),
5I (137-140), 5J (140-147);
Texture : APHYRIC,FINE-GRAINED,FRESH BLACK GLASS PCES 1CM
THICK & RINDS 1-2MM IN PCES 2+3C+4A+5H,TEXTURE
GRADES FROM GLASS TO APHANITIC BASALT TO VARIOLITIC
BASALT;
Structure : PILLOW BASALT,MINOR CALCITE VEINLETS,IRREGULAR
CALCITE VEIN IN PCE 4D(POSSIBLY A VESICLE TRAIN?);
Alteration : MOD
YELLOWISH-BROWN MOTTLING IN PCES 4B-5G,MINOR GLASS
ALTERATION;
Comments : GRAY BASALT(10YR N5/0 TO 7.5YR N6/0),ALTERED BASALT
MAY BE BROWN(10YR 6/3) OR YELLOWISH-BROWN(10YR 5/6);
Vesicles : Size(mm): TO 2 Percent: TO 5
Location: Filling:
Shape : ROUND,IRREG
VESICLES ARE CONCENTRATED WITHIN A FEW CM OF
PILLOW MARGINS,POSSIBLE VESICLE TRAIN FILLED WITH
CALCITE IN PCE 4D;
Replacement: CALCITE
CALCITE VEINS(POSSIBLY A VESICLE TRAIN?);
PALAGONITE
CARBONATE
CARB.UNSPEC;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 326.00
Core: 5 Top of Core Depth (m) : 320.00
Sect: 4 Top of Section Depth(m): 324.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (1-5), 1B (7-10), 1C (9-16), 1D (17-20),
2A (22-30), 2B (30-43), 2C (43-55), 3A (58-61),
3B (61-71), 3C (71-78), 4 (79-88), 5A (89-98),
5B (98-105), 6A (107-114), 6B (115-119),
7 (122-130), 8A (133-138), 8B (138-146),
8C (146-150);
Texture : APHYRIC,FINE-GRAINED,SIMILAR TO CORE 5-3,GLASS
Alteration : IN PCES 1A-1B+2B+5A+6A-6B+8A;
Structure : PILLOW BASALT;
Alteration : MOD
MOTTLED YELLOW-BROWN PATCHES;
Comments : COLOR OF BASALT VARIES DUE TO EXTENT OF ALTERATION
FROM GRAY(7.5YR N5/0) TO DARK GRAY(7.5YR N6/0) TO
MOTTLED YELLOW-BROWN PATCHES(10YR 5/6);
Leg : 82 Top/Bottom Interval(mm): 0/ 350 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 326.35
Core: 5 Top of Core Depth (m) : 320.00
Sect: 5 Top of Section Depth(m): 326.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-3), 1B (4-8), 2A (10-14), 2B (15-19),
2C (20-25), 2D (26-35);
Texture : APHYRIC,FINE-GRAINED;
Structure : PILLOW BASALT,IRREGULAR PATCHES(2-5MM IN DIAMETER)
OF CALCITE SET INTO BASALT IN PCE 2C;
Alteration : MOD
OL & PLAG REPLACED,MORE ALTERED ABOUT CALCITE
PATCHES IN PCE 2C;
Comments : GRAY BASALT(7.5YR N5/0);
Vesicles : Size(mm): Percent: RARE
Location: Filling: CALCITE
Phenocrysts: OLIVINE
Size(mm): 1-2
OL PRESENT AS DARK ORANGE-BROWN ALTERATION PRODUCT
ANHEDRAL,SCATTERED;
PLAGIOCLASE
Size(mm): 1-3
PLAG PRESENT AS NEEDLE-LIKE MICROPHENOS,LOCALIZED
CONCENTRATION;
Replacement: CALCITE
CALCITE FILLS VESICLES,CALCITE PATCHES IN PCE 2C;
UNIDENTIFIED
Minerals Replaced: OL
DARK ORANGE-BROWN UNIDENT.MINS REPLACE OL;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 564 Sample Midpoint (m) : 330.50
Core: 6 Top of Core Depth (m) : 329.00
Sect: 1 Top of Section Depth(m): 329.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (1-21), 1B (21-42), 1C (42-48), 2 (50-59),
3 (60-73), 4A (74-80), 4B (80-98), 5 (100-105),
6A (106-116), 6B (115-130), 6C (130-138),
6D (138-142), 6E (142-150);
Texture : APHYRIC,FINE-GRAINED,PCES 1C-6E ARE APHANITIC &
VARIOLITIC,GLASS ON PCES 3+4B+6D-6E;
Structure : PILLOW BASALT,FRACTURED;
Alteration : MOD
TOP OF PCE 1A & BOTTOM OF PCE 1B,PCES 1C-6E;
FRESH
INTERVALS 7-18+27-35CM;
FRESH TO MOD
INTERVAL 18-27CM;
Comments : PCES 1A-1B ARE DARK-GRAY(7.5YR N4/0) WITH SLIGHT
ALTERATION TO BROWN(10YR 5/1) NEAR FRACTURES,PCES
1C-6E ARE GRAY(7.5YR N5/0) IN FRESHER AREAS &
LIGHT BROWNISH-GRAY TO PALE BROWN(10YR 6/2 TO
10YR 6/3) IN ALTERED AREAS;
Phenocrysts: PLAGIOCLASE ( 2-3%)
Size(mm): TO 3
ABUNDANT ACICULAR PLAG;
OLIVINE
Size(mm): 0.5
ROUND OL MICROPHENOS COMPLETELY ALTERED TO BROWN
OR DARK GREEN UNIDENT.MINS;
Replacement: UNIDENTIFIED
Minerals Replaced: OL
OL COMPLETELY ALTERED TO BROWN OR DARK GREEN
UNIDENT.MINS;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 564 Sample Midpoint (m) : 332.00
Core: 6 Top of Core Depth (m) : 329.00
Sect: 2 Top of Section Depth(m): 330.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (1-12), 1B (12-15), 1C (16-18), 2A (20-28),
2B (30-38), 3A (40-45), 3B (45-70), 4 (72-88),
5A (91-100), 5B (99-105), 5C (101-111),
5D (111-116), 6A (118-128), 6B (126-135),
6C (135-142), 6D (142-149);
Texture : APHYRIC,PCES 1A-2A APHANITIC,PCES 2B-4+6A-6D FINE-
GRAINED,GLASS IN PCES 1C+5C,SIMILAR TO CORE 6-1;
Structure : PILLOW BASALT;
Alteration : MOD
PCES 1A+2A+5B-6D;
FRESH TO MOD
PCES 2B-4;
MOD TO EXT
1B+1C+5A;
Comments : GRAY BASALT;
Vesicles :
Location: Filling: CALCITE
Shape : IRREGULAR
PCE 3B;
Size(mm): 1-3 Percent: 1-8
Location: Filling: CARB.UNSPEC
Shape : ROUND
PCES 6A-6D WITH ABUNDANCE & SIZE INCREASING
DOWNCORE;
Replacement: CALCITE
CALCITE-FILLED VESICLES IN PCE 3B;
CARBONATE
CARB.UNSPEC-FILLED VESICLES IN PCES 6A-6D;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 333.50
Core: 6 Top of Core Depth (m) : 329.00
Sect: 3 Top of Section Depth(m): 332.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
MASSIVE BASALT;
LIMESTONE;
Piece No. : PCES 1 (1-5), 2A (7-13), 2B (13-22), 2C (21-27),
2D (27-30), 3 (32-44), 4A (45-50), 4B (50-55),
5A (57-65), 5B (65-74), 5C (74-80), 5D (79-83),
6A (85-87), 6B (87-99), 6C (98-103), 7 (104-108),
8A (110-125), 8B (125-132), 9 (133-140),
10 (141-150);
Texture : APHYRIC,FINE-GRAINED,INTERVALS 46-59+105-109CM ARE
VARIOLITIC(POSSIBLY PILLOW MARGINS?);
Structure : MASSIVE PILLOW BASALT,IRREGULAR CALCITE PATCHES,
CALCITE/LIMESTONE BLEBS INTERVALS 46-59+105-109CM;
Alteration : FRESH TO MOD
PCES 1-3+5A+6A-6C+8A-10;
MOD
PCES 4A-4B+5B-5D+7;
Comments : BASALT IS DARK GRAY(7.5YR N4/0) TO BROWN(10YR 5/1)
DEPENDING UPON EXTENT OF ALTERATION(SOME BASALT
ALTERED TO LIGHT BROWNISH-GRAY TO PALE BROWN);
Phenocrysts: PLAGIOCLASE
OLIVINE
PLAG & OL ARE SIMILAR TO THAT FOUND IN CORE 6-1;
Replacement: CALCITE
CALCITE PATCHES,SPARRY CALCITE INTERGROWN INTO
BASALT CAVITIES,CALCITE/LIMESTONE BLEBS INTERVALS
46-59+105-109CM;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 335.00
Core: 6 Top of Core Depth (m) : 329.00
Sect: 4 Top of Section Depth(m): 333.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
MASSIVE BASALT;
Piece No. : PCES 1A (1-7), 1B (7-11), 2A (13-22), 2B (20-34),
2C (33-38), 2D (38-49), 2E (50-57), 2F (57-61),
2G (61-73), 2H (73-80), 2I (80-88), 2J (89-112),
2K (113-150);
Texture : APHYRIC,FINE-GRAINED,CONTINUATION OF CORE 6-3;
Structure : MASSIVE PILLOW BASALT,1-6CM CALCITE PATCHES;
Alteration : MOD
MOTTLED GRAY ALTERATION,OL ALTERED;
Comments : DARK(?) GRAY(7.5YR N4/0) BASALT;
Phenocrysts: PLAGIOCLASE
Size(mm): 1-4
LARGE AMOUNTS OF ACICULAR PLAG PHENOS;
OLIVINE
OL ALTERED TO DARK ORANGE-BROWN ANHEDRAL
UNIDENT.MINS;
Replacement: CALCITE
CALCITE PRESENT IN PATCHES;
UNIDENTIFIED
Minerals Replaced: OL
ANHEDRAL DARK ORANGE-BROWN UNIDENT.MINS REPLACE
OL;
Leg : 82 Top/Bottom Interval(mm): 0/1000 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 336.00
Core: 6 Top of Core Depth (m) : 329.00
Sect: 5 Top of Section Depth(m): 335.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
MASSIVE BASALT;
Piece No. : PCES 1A (0-7), 1B (5-10), 1C (10-17), 1D (17-24),
1E (20-30), 1F (27-31), 1G (31-37), 1H (38-40),
1I (40-42), 1J (43-48), 1K (48-50), 2A (52-56),
2B (57-60), 2C (60-64), 2D (64-66), 2E (68-70),
3 (71-96);
Texture : APHYRIC,PCES 1A-2C FINE-GRAINED & SIMILAR TO CORE
6-4,PCES 2D-3 APHANITIC & VARIOLITIC & SIMILAR TO
CORE 6-1,GLASS ON ONE OF THE FRAGMENTS OF PCE 3;
Structure : MASSIVE PILLOW BASALT;
Alteration : FRESH
PCES 1A-1D+2A-2D & UPPER 6CM OF PCE 1E;
FRESH TO MOD
PCES 1F-1K & LOWER 3CM OF PCE 1E;
MOD
PCES 2E-3;
Comments : PCE 3 MADE UP OF SEVERAL FRAGMENTS;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 339.50
Core: 7 Top of Core Depth (m) : 338.00
Sect: 1 Top of Section Depth(m): 338.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-8), 2 (10-18), 3 (19-24), 4A (26-33),
4B (35-40), 4C (41-50), 5A (50-63), 6D (97-103),
7 (105-121), 8 (123-128), 9A (130-135),
9B (135-147);
Texture : APHYRIC,PCES 1-4C+9B ARE FINE-GRAINED,PCES 5A+7-8
HAVE INTERPILLOW GLASS GRADING TO APHANITIC BASALT
& IN TURN INTO A VARIOLITIC ZONE(ALL ZONES ARE ONLY
A FEW CM THICK),GLASS ON PCE 8;
Structure : PILLOW BASALT;
Alteration : FRESH TO MOD
PCES 1-2+4A-4C+7 & LOWER FRAGMENT OF PCE 9B;
MOD
PCES 3+5A+6D+8-9A & UPPER TWO FRAGMENTS OF PCE 9B;
Comments : BASALT COLOR VARIES DUE TO EXTENT OF ALTERATION-
SOME BASALT IS DARK GRAY(7.5YR N4/0) TO A MOTTLED
GRAY(7.5YR N5/0) OR A LIGHT YELLOWISH-BROWN
(10YR 6/4),VARIOLITIC ZONES ARE YELLOWISH-BROWN
(10YR 5/6 TO 10YR 5/8),APHANITIC BASALT IS BLACK
(7.5YR N2.5/0);
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 339.50
Core: 7 Top of Core Depth (m) : 338.00
Sect: 1 Top of Section Depth(m): 338.00
LITHOLOGY: GLASS BRECCIA;
LIMESTONE;
Piece No. : PCES 5B (62-70), 5C (71-73), 5D (75-79), 5E (79-84),
5F (84-88), 6A (89-94), 6B (93-96), 6C (94-97);
Comments : GLASS BRECCIA WITH CLASTS CEMENTED INTO A CALCITE/
LIMESTONE MATRIX,CLASTS ARE ANGULAR & ALIGNED
PARALLEL TO EACH OTHER WITHIN A PCE,CALCITE/LIME-
STONE MAY BE TINTED A SLIGHT PALAG COLOR & ALSO A
LIGHT PINK ZONE IS SEEN;
Replacement: CALCITE
CALCITE/LIMESTONE CEMENTS CLASTS;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 564 Sample Midpoint (m) : 341.00
Core: 7 Top of Core Depth (m) : 338.00
Sect: 2 Top of Section Depth(m): 339.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (1-8), 1B (7-16), 1C (14-21), 1D (21-30),
2A (32-35), 2B (36-41), 3A (43-47), 3B (46-48),
3C (48-57), 3D (57-61), 3E (65-68), 3F (57-64),
3G (64-71), 4 (73-78), 5 (81-87), 6A (89-93),
6B (90-93), 6C (93-101), 6D (101-105), 7A (106-111),
7B (111-117), 7C (117-123), 7D (123-128),
8 (128-142), 9 (143-149);
Texture : APHYRIC,INTERVALS 0-28+130-140CM ARE FINE-GRAINED,
INTERVALS 28-128CM APHANITIC & GLASS PILLOW MARGIN;
Structure : PILLOW BASALT;
Alteration : FRESH
INTERVALS 0-28+129-150;
MOD
INTERVAL 28-130;
Comments : INTERVAL 95-105 INTERPILLOW GLASS BRECCIA WITH
MATRIX PART WHITE CALCITE & PART LIGHT GRAY FINE-
GRAINED LIMESTONE;
Replacement: CALCITE
WHITE CALCITE PARTIALLY COMPRISES MATRIX OF
INTERPILLOW GLASS BRECCIA;
Leg : 82 Top/Bottom Interval(mm): 0/1250 Analyst: Rideout, M.
Hole: 564 Sample Midpoint (m) : 342.25
Core: 7 Top of Core Depth (m) : 338.00
Sect: 3 Top of Section Depth(m): 341.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (0-8), 2 (11-18), 3A (20-24), 3B (24-26),
4A (29-43), 4B (43-55), 4C (55-63), 4D (63-74),
5A (76-80), 5B (81-86), 5C (86-97), 6 (99-106),
7 (110-123);
Texture : APHYRIC,FINE-GRAINED,PILLOW INTERIOR GRADING INTO AN
INTERPILLOW ZONE(CONSISTING OF GLASS TO APHANITIC TO
VARIOLITIC ZONES),SIMILAR TO CORE 7-1;
Structure : PILLOW BASALT;
Alteration : FRESH TO MOD
ALTERATION SIMILAR TO CORE 7-1, PCE 2 +4A-4C+5A +
INTERVAL 92-123 CM;
MOD
PCE 1+3A+3B+4D+5B + INTERVAL 82-92CM;
Comments : DARK GRAY BASALT(7.5YR N4/0),COLORING SIMILAR TO
CORE 7-1;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 564 Sample Midpoint (m) : 348.50
Core: 8 Top of Core Depth (m) : 347.00
Sect: 1 Top of Section Depth(m): 347.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (1-3), 1B (4-6), 1C (4-7), 2A (8-20),
2B (21-27), 2C (27-38), 2D (38-43), 2E (43-52),
2F (52-56), 2G (57-61), 2H (60-62), 3 (63-81),
4A (82-85), 4B (85-89), 4C (89-93), 4D (93-97),
4E (97-102), 4F (103-105), 4G (105-108),
4H (108-113), 5A (115-124), 5B (124-127),
5C (127-141), 5D (141-147);
Texture : APHYRIC,FINE-GRAINED,VARIOLITIC GRADING TO APHANITIC
TO GLASS RIMS,GLASS CHILL MARGINS ON PCES 1C+4B-4C+
4E-4H;
Structure : PILLOW BASALT,CALCITE-FILLED FRACTURES;
Alteration : FRESH TO MOD
PCES 1A-1C+4A-4H;
EXT
PCES 2A-2B+2F-3+5A;
MOD
PCS 2C-2E+5B-5D;
Comments : GRAY(2.5Y N5/0) BASALT SOME ALTERED TO PALE BROWN
(10YR 6/3),GLASS CLASTS IN CALCITE MATRIX PRESENT
(COLOR VARIES FROM REDDISH-YELLOW(7.5YR 6/8)) TO
BROWN(7.5YR 4/4) FURTHER OUT FROM GLASS CORE DUE TO
ALTERATION),GLASS CHILL MARGINS ARE BLACK;
Vesicles : Size(mm): 1-2 Percent: <1
Location: Filling: CALCITE
Shape : ROUND
EMPTY & CALCITE-FILLED VESICLES PRESENT ESPECIALLY
IN ALTERED PILLOW MARGINS;
Replacement: UNIDENTIFIED
Minerals Replaced: GLASS
GLASS CLASTS ALTERED;
CALCITE
CALCITE FILLS FRACTURES,PCE 4D HAS SPARRY CALCITE
RIM,CALCITE FILLS SOME FRACTURES,GLASS CLASTS HAVE
CALCITE MATRIX;
Leg : 82 Top/Bottom Interval(mm): 0/ 650 Analyst: Neuser, R.
Hole: 564 Sample Midpoint (m) : 349.15
Core: 8 Top of Core Depth (m) : 347.00
Sect: 2 Top of Section Depth(m): 348.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (1-4), 1B (4-6), 1C (7-13), 1D (13-16),
1E (17-20), 2 (22-32), 3 (35-43), 4 (46-55),
5 (57-63);
Texture : APHYRIC,FINE-GRAINED;
Structure : PILLOW BASALT;
Alteration : FRESH TO MOD
Comments : BASALT GRAY TO LIGHT BROWNISH-GRAY(2.5Y N6/0 TO
2.5Y N6/2) DEPENDING UPON EXTENT OF ALTERATION;
Vesicles : Size(mm): Percent: 0
PCES 1A-2;
Size(mm): 0.5-2 Percent: 5-10
Location: Filling: CALCITE
Shape : ROUND
PCES 3-4 HAVE CALCITE-FILLED VESICLES,PCE 5 HAS
EMPTY VESICLES;
Replacement: CALCITE
CALCITE FILLS MOST VESICLES;
Leg : 82 Top/Bottom Interval(mm): 650/1250 Analyst: Neuser, R.
Hole: 564 Sample Midpoint (m) : 349.75
Core: 8 Top of Core Depth (m) : 347.00
Sect: 2 Top of Section Depth(m): 349.15
LITHOLOGY: OL PLAG MOD PHYRIC BASALT;
Piece No. : PCES 6 (65-73), 7 (75-85), 8A (87-90), 8B (90-93),
8C (92-95), 8D (95-99), 8E (99-103), 8F (103-107),
8G (108-110), 8H (110-113), 9 (115-122);
Texture : MOD PHYRIC,FINE-GRAINED BUT COARSER GRAINED THAN IN
PREVIOUS SECTIONS,GLASS SPLINTERS AMONG THE CHIPS
IN PCE 9;
Alteration : FRESH TO MOD
Comments : PCE 9 MADE UP OF SEVERAL CHIPS;
Vesicles : Size(mm): Percent: 0
NO VISIBLE VESICLES;
Phenocrysts: OLIVINE ( 5%)
Size(mm): TO 1
OL PHENOS RANDOMLY SCATTERED & REPLACED BY BROWN &
GREEN CLAY.MINS;
PLAGIOCLASE
Size(mm): TO 4
PLAG LATHS;
Replacement: CLAY MINERALS
Minerals Replaced: OL
BROWN & GREEN CLAY.MINS REPLACE OL;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 564 Sample Midpoint (m) : 357.50
Core: 9 Top of Core Depth (m) : 356.00
Sect: 1 Top of Section Depth(m): 356.00
LITHOLOGY: OL PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1A (1-11), 1B (11-17), 1C (17-25), 1D (25-45),
1E (45-54), 1F (53-67), 1G (67-75), 1H (75-79),
1I (79-96), 1J (96-105), 1K (101-105), 2A (108-111),
2B (110-112), 2C (113-115), 2D (115-118),
2E (118-121), 3A (123-127), 3B (127-135),
3C (134-140), 3D (142-147);
Texture : MOD PHYRIC,FINE-GRAINED;
Structure : FRACTURES ARE COMMON & MOSTLY ORIENTED HORIZONTAL &
SHOW CALCITE FILLING & IN SOME PLACES A SOFT DARK-TO
-LIGHT-GREEN UNIDENT.MINS ON THE FRACTURE PLANE;
Alteration : FRESH TO MOD
OL ALTERED;
Comments : DARK GRAY BASALT(5Y 4/1);
Groundmass : COPPER
Size(mm): 0.5-2
ID UNCERTAIN,A FEW SCATTERED LATH-SHAPED OR ROUND
MINERALS OCCUR WHICH LOOK LIKE METALLIC COPPER;
Phenocrysts: OLIVINE ( <5%)
Size(mm): <1
OL PHENOS MOSTLY REPLACED BY BROWN CLAY.MINS;
PLAGIOCLASE
Size(mm): TO 5
ACICULAR PLAG OCCURS THROUGHOUT;
Replacement: CALCITE
CALCITE FILLS SOME FRACTURES;
CLAY MINERALS
Minerals Replaced: OL
BROWN CLAY.MINS REPLACE OL;
UNIDENTIFIED
SOFT DARK-TO-LIGHT-GREEN UNIDENT.MINS ON SOME
FRACTURE PLANES;
Leg : 82 Top/Bottom Interval(mm): 0/ 750 Analyst: Neuser, R.
Hole: 564 Sample Midpoint (m) : 358.25
Core: 9 Top of Core Depth (m) : 356.00
Sect: 2 Top of Section Depth(m): 357.50
LITHOLOGY: OL-PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (1-10), 2 (11-19), 3A (21-25), 3B (26-32),
3C (34-39), 4 (41-54), 5A (55-63), 5B (64-74);
Texture : SPARSELY PHYRIC,FINE-GRAINED,BLACK GLASS MARGIN ON
BASE OF PCE 5B;
Alteration : FRESH TO MOD
ALTERED BASALT ZONE ABOVE GLASS MARGIN ON PCE 5B;
Comments : BASALT IS DARK GRAY(5Y 4/1),ALTERED BASALT IN PCE 5B
IS DARK GRAYISH-BROWN(10YR 4/2);
Phenocrysts: OLIVINE ( <2%)
LESS OL THAN IN CORE 9-1;
PLAGIOCLASE
Size(mm): <1
Leg : 82 Top/Bottom Interval(mm): 750/1450 Analyst: Neuser, R.
Hole: 564 Sample Midpoint (m) : 358.95
Core: 9 Top of Core Depth (m) : 356.00
Sect: 2 Top of Section Depth(m): 358.25
LITHOLOGY: APHYRIC TO OL SPARSELY PHYRIC BASALT;
PILLOW BASALT;
BASALT GLASS BRECCIA;
Piece No. : PCES 6A (75-78), 6B (78-81), 6C (83-86), 6D (86-90),
7 (91-100), 8A (102-105), 8B (105-109),
8C (109-113), 8D (113-115), 8E (115-117),
8F (117-120), 9A (121-125), 9B (126-132),
9C (132-143);
Texture : PCE 6C SPARSELY PHYRIC,PCES 7-9C APHYRIC,PCES 6C+7-
9C ARE ALL FINE-GRAINED;
Structure : PCES 7-9C PILLOW BASALT(?);
Alteration : FRESH TO MOD
Comments : PCES 6A+6D ARE GRAY(5Y 5/1),PCE 6C IS DARK GRAY
(2.5Y N4/0),PCES 7-9C ARE GRAY(5Y 5/1),PCE 6B IS
BASALT GLASS BRECCIA WITH PALAGONITIZED GLASS CLASTS
(<6MM) WITH CALCITE CEMENT;
Vesicles : Size(mm): <5 Percent:
Location: Filling: CLAY.MIN,CALCITE
Shape : ROUND,OVAL
PCES 6A+6D ARE HIGHLY VESICULAR BASALT WITH ROUND
TO OVAL VESICLES WHICH ARE EMPTY OR LIGHT-GREEN
CLAY.MIN-FILLED OR COATED OR FILLED WITH CALCITE;
Size(mm): Percent: 0
PCES 7-9C HAVE NO VISIBLE VESICLES;
Phenocrysts: OLIVINE
OL PRESENT IN PCE 6C;
Replacement: CLAY MINERALS
LIGHT GREEN-CLAY.MINS FILLS OR COATS SOME
VESICLES;
CALCITE
CALCITE MATRIX IN PCE 6B,CALCITE FILLS SOME
VESICLES;
PALAGONITE
Minerals Replaced: GLASS
PALAGONITIZED GLASS CLASTS IN PCE 6B;
Leg : 82 Top/Bottom Interval(mm): 0/ 800 Analyst: Neuser, R.
Hole: 564 Sample Midpoint (m) : 359.80
Core: 9 Top of Core Depth (m) : 356.00
Sect: 3 Top of Section Depth(m): 359.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-4), 1B (4-7), 1C (7-11), 1D (13-15),
2A (17-25), 2B (26-33), 2C (33-35), 2D (36-39),
2E (39-42), 3A (43-51), 3B (51-55), 3C (56-61),
3D (62-65), 4A (67-72), 4B (72-76);
Texture : APHYRIC,FINE-GRAINED,PCES 1D-2B ARE PCES OF CHILLED
PILLOW MARGINS WHERE SOMETIMES GLASS GRADES THRU
VARIOLITIC ZONE(VARIOLES <2MM) INTO VERY FINE-
GRAINED BASALT,PCE 3C VARIOLITIC(<7MM);
Structure : PILLOW BASALT,GREEN CLAY.MINS(?) ON FRACTURE PLANES
OF PCES 1A-1C,PCES 1D-2B HIGHLY FRACTURED;
Alteration : FRESH TO MOD
Comments : PCES 1A-1C ARE GRAY(5Y 5/1),PCES 1D-2B ARE VERY DARK
GRAY(2.5Y N3/0),PCES 2C-4B ARE GRAY(5Y 6/1);
Vesicles : Size(mm): Percent: <2
Location: Filling: CALCITE
Shape : IRREGULAR
PCES 2C-4B HAVE SPARSELY SCATTERED IRREGULAR
VESICLES;
Phenocrysts: PLAGIOCLASE
Size(mm): <3
PLAG LATHS VISIBLE IN PCES 2C-4B;
Replacement: CALCITE
CALCITE FILLS VESICLES IN PCES 2C-4B,CALCITE
CEMENTS PCES 1D-2B;
CLAY MINERALS
GREEN CLAY.MINS(?) FOUND ON FRACTURE PLANES IN
PCES 1A-1C;
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