Leg : 82 Top/Bottom Interval(mm): 0/ 200 Analyst: Rideout, M.
Hole: 563 Sample Midpoint (m) : 360.34
Core: 22 Top of Core Depth (m) : 355.50
Sect: CC Top of Section Depth(m): 360.24
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED,INTERVAL 0-20CM;
Texture : MOD PHYRIC;
Structure : PILLOW BASALT;
Comments : GRAY BASALT;
Phenocrysts: PLAGIOCLASE
OLIVINE
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Rideout, M.
Hole: 563 Sample Midpoint (m) : 365.95
Core: 23 Top of Core Depth (m) : 364.50
Sect: 1 Top of Section Depth(m): 364.50
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 1 (1-4), 2A (8-17), 2B (14-25), 2C (25-30),
3 (32-36), 4A (39-42), 4B (42-48), 5 (49-62),
6 (64-69), 7 (70-82), 8 (84-89), 9 (90-95),
10A (98-103), 10B (103-109), 10C (109-121),
11 (123-128), 12 (130-135), 13 (138-142);
Texture : MOD PHYRIC,GLASS IS SCARCE,PCE 7 HAS A GLASSY RIND
GRADING INTO APHANITIC BASALT & THEN INTO APHYRIC-TO
-SPARSELY PHYRIC BASALT;
Structure : PILLOW BASALT,SEDIMENTARY MATERIAL(LIMESTONE) OCCURS
AS INTERPILLOW OR IRREGULARLY SHAPED VEINS;
Alteration : FRESH TO MOD
MOD
PCE 1 & 5 & 6 & 8 & 10A & 10B, INTERVAL 27-30CM;
DARK ORANGE-BROWN ALTERATION RESIDUE IS PRESENT IN
MOST LOCALITIES INSTEAD OF FRESH OL,ALTERATION
FREQUENTLY OCCURS IN THE BASALT ADJACENT TO
LIMESTONE UNITS,DENDRITIC PATTERN OF MN.OXIDE OR
OTHER OXIDES VISIBLE IN PLACES;
Comments : FRESHER BASALT IS GRAY(2.5YN 6/0),ALTERED BASALT
VARIES IN COLOR(USUALLY PALE BROWN,10YR 6/3),PCE 7
VARIES IN COLOR FROM A BLACK(10YR 2/1) GLASSY RIND
TO VERY DARK GRAY(10YR 3/1) APHYRIC BASALT TO A
SPARSELY PHYRIC GRAY(2.5YN 6/0) BASALT;
Vesicles : Size(mm): 1-2 Percent:
Location: Filling: CLAY.MINS
Shape : ROUND
VESICLES SCARCE & OFTEN ARE FILLED WITH CLAY.MINS;
Phenocrysts: PLAGIOCLASE ( 2-3%)
Size(mm): 2-4
OLIVINE ( 1-5%)
Size(mm): 1-2
MICROPHENOS OF OL,PLAG PHENOS ARE RANDOMLY
ORIENTED 2-4MM LONG &/OR ROUNDED 2-5MM
GLOMEROCRYSTS OR LATHS;
Replacement: CLAY MINERALS
FILLS VESICLES;
MANGANESE OXIDE
DENDRITIC PATTERN OF MN.OXIDE OR OTHER OXIDES;
UNIDENTIFIED
Minerals Replaced: OL
DARK ORANGE-BROWN UNIDENT.MIN REPLACES OL IN MOST
LOCALITIES;
CALCITE
CALCITE FILLS SOME VEINS;
Leg : 82 Top/Bottom Interval(mm): 0/ 450 Analyst: Christie, D.M.
Hole: 563 Sample Midpoint (m) : 366.45
Core: 23 Top of Core Depth (m) : 364.50
Sect: 2 Top of Section Depth(m): 366.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (0-14), 2A (15-17), 2C (21-23), 2D (25-28),
2E (29-30), 2F (31-34), 3 (35-44);
Texture : MOD PHYRIC,APHANITIC,VARIOLITIC;
Structure : PILLOW BASALT;
Alteration : MOD
Comments : GRAY TO GRAYISH-BROWN BASALT(10YR 5/1 TO 10YR 5/2);
Phenocrysts: PLAGIOCLASE ( 1%)
Size(mm): 1
PRISMATIC PLAG PHENOS;
Leg : 82 Top/Bottom Interval(mm): 0/ 450 Analyst: Christie, D.M.
Hole: 563 Sample Midpoint (m) : 366.45
Core: 23 Top of Core Depth (m) : 364.50
Sect: 2 Top of Section Depth(m): 366.00
LITHOLOGY: SEDIMENT;
LIMESTONE;
Piece No. : PCE 2B (17-19);
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 563 Sample Midpoint (m) : 368.00
Core: 24 Top of Core Depth (m) : 366.50
Sect: 1 Top of Section Depth(m): 366.50
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 1A (0-6), 1B (7-15), 1C (15-23), 2 (41-48),
3A (49-55), 3B (55-61), 4 (63-66), 5A (68-75),
5B (76-82), 6A (85-92), 6B (93-101), 7A (103-107),
7B (107-111), 8 (113-115), 9A (120-125),
9B (125-132), 10A (135-141), 10B (141-143),
10C (143-146);
Texture : SPARSELY PHYRIC,GLASS PRESENT AS RIMS & INTERPILLOW
ZONES,SEQUENCE OF GLASS TO APHANITIC ZONE(PCES
9A-10C);
Structure : PILLOW BASALT,CALCITE & LIMESTONE VEINS,IRREGULAR
VEINLETS ALSO PRESENT;
Alteration : FRESH TO MOD
MOD
INTERVALS 40-53CM, 89-92CM;
ROCK FRACTURES ALTERED,SOME COLOR CHANGES DUE TO
ALTERATION;
Comments : GRAY BASALT(2.5Y N5/0),ALTERED AREAS ARE YELLOWISH-
BROWN(10YR 5/8);
Phenocrysts: PLAGIOCLASE
OLIVINE
Size(mm): TO 1
OL DOES NOT BECOME VISIBLE UNTIL 85-150CM,MOST OF
OL IS ALTERED TO DARK ORANGE-BROWN CLAY.MINS;
Replacement: CALCITE
CALCITE VEINS;
CLAY MINERALS
Minerals Replaced: OL
DARK ORANGE-BROWN CLAY.MINS REPLACE OL;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 563 Sample Midpoint (m) : 369.50
Core: 24 Top of Core Depth (m) : 366.50
Sect: 2 Top of Section Depth(m): 368.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-10), 1B (10-16), 1C (16-22), 2A (24-30),
2D (40-50), 2E (49-56), 2F (55-61), 3A (67-69),
3B (70-80), 3C (81-85), 3D (86-93), 3E (94-100),
4B (103-108), 4C (108-116), 5A (118-123),
5B (125-140);
Texture : MOD PHYRIC,VARIOLITIC SEQUENCE,GLASS;
Structure : PILLOW BASALT;
Alteration : FRESH TO MOD
MOD
INTERVALS 40-74CM, 115-120CM, PCE 6;
ALTERATION CONCURRENT WITH VARIOLITIC BASALT
SEQUENCE;
Comments : GRAY BASALT(2.5Y N5/0),GLASS IS BLACK(10YR 2/1),
APHANITIC BASALT HAS VARIOLITIC ZONE OF YELLOW-BROWN
(10YR 5/8 TO 10YR 5/6);
Phenocrysts: PLAGIOCLASE
OLIVINE
Size(mm): TO 2
PLAG XTLS AS IN CORE 24-1,OL MICROPHENOS
INCREASING IN SIZE;
Replacement: CALCITE
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 563 Sample Midpoint (m) : 369.50
Core: 24 Top of Core Depth (m) : 366.50
Sect: 2 Top of Section Depth(m): 368.00
LITHOLOGY: GLASS BRECCIA;
LIMESTONE;
Piece No. : PCES 2B (31-34), 2C (34-40), 2D (40-48), 3A (64-66),
4A (101-103), 6 (142-148);
Leg : 82 Top/Bottom Interval(mm): 0/ 50 Analyst: Drake, N.
Hole: 563 Sample Midpoint (m) : 369.55
Core: 24 Top of Core Depth (m) : 366.50
Sect: 3 Top of Section Depth(m): 369.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCE 1 (1-5);
Texture : APHYRIC,FINE-GRAINED(ALMOST APHANITIC),PILLOW
MARGIN;
Leg : 82 Top/Bottom Interval(mm): 50/ 110 Analyst: Drake, N.
Hole: 563 Sample Midpoint (m) : 369.61
Core: 24 Top of Core Depth (m) : 366.50
Sect: 3 Top of Section Depth(m): 369.55
LITHOLOGY: VOLCANIC BRECCIA;
LIMESTONE;
Piece No. : PCE 2A (5-11);
Leg : 82 Top/Bottom Interval(mm): 110/1500 Analyst: Drake, N.
Hole: 563 Sample Midpoint (m) : 371.00
Core: 24 Top of Core Depth (m) : 366.50
Sect: 3 Top of Section Depth(m): 369.61
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 2B (11-15), 3 (16-26), 4 (26-38), 5A (40-48),
5B (45-50), 5C (51-54), 6A (56-67), 6B (67-74),
7A (75-82), 7B (82-89), 7C (88-98), 7D (98-108),
7E (108-125), 7F (123-132), 7G (132-149);
Texture : MOD PHYRIC,FINE-GRAINED;
Structure : PILLOW BASALT,FRACTURES FILLED WITH CALCITE OR PINK
LIMESTONE OR BOTH(?) TOGETHER;
Alteration : MOD
PCE 3;
FRESH
PCES 2B+4-5C+7A-7G;
FRESH TO MOD
PCES 6A-6B;
Comments : FRESH BASALT IS GRAY(7.5YR N5),ALTERED BASALT IS
LIGHT GRAYISH-BROWN(10YR 6/2-NEAR PILLOW MARGINS);
Phenocrysts: PLAGIOCLASE ( <2%)
Size(mm): 2-5
OLIVINE ( <1%)
Size(mm): TO 2
PLAG PHENOS PRISMS OR EQUANT & SOME WITH ROUNDED
EDGES(RESORBED?),SOME PLAG NEEDLES(1-4MM) RANDOMLY
ORIENTED,OL IS MOSTLY ALTERED;
Replacement: CLAY MINERALS
Minerals Replaced: OL
OL MOSTLY ALTERED TO RED-BROWN CLAY.MINS(ID
UNCERTAIN);
CALCITE
CALCITE FILLS FRACTURES;
Leg : 82 Top/Bottom Interval(mm): 0/ 400 Analyst: Drake, N.
Hole: 563 Sample Midpoint (m) : 371.40
Core: 24 Top of Core Depth (m) : 366.50
Sect: 4 Top of Section Depth(m): 371.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-9), 1B (10-18), 1C (18-40);
Texture : MOD PHYRIC,SIMILAR TO CORE 24-3;
Structure : PILLOW BASALT;
Alteration : FRESH
Comments : GRAY BASALT;
Phenocrysts: PLAGIOCLASE ( <2%)
Size(mm): 2-5
OLIVINE ( <1%)
Size(mm): TO 2
Leg : 82 Top/Bottom Interval(mm): 400/1100 Analyst: Drake, N.
Hole: 563 Sample Midpoint (m) : 372.10
Core: 24 Top of Core Depth (m) : 366.50
Sect: 4 Top of Section Depth(m): 371.40
LITHOLOGY: PLAG-OL SPARSELY PHYRIC TO APHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 2 (41-51), 3 (52-67), 4 (68-73), 5 (74-83),
6 (84-96), 7 (97-110);
Texture : SPARSELY PHYRIC TO APHYRIC;
Alteration : FRESH TO MOD
PCE 4 AND INTERVAL 90-110CM;
MOD
PCE 2, INTERVAL 73-90CM;
EXT
PCE 3;
Comments : INTERVAL 85-86CM IS RIM OF LIMESTONE & ANGULAR
BASALT BRECCIA & ALT.GLAS CLASTS WITH A RIM OF
CALCITE;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 563 Sample Midpoint (m) : 375.00
Core: 25 Top of Core Depth (m) : 373.50
Sect: 1 Top of Section Depth(m): 373.50
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 1A (0-8), 1B (8-17), 1C (17-25), 1D (25-28),
1E (27-44), 1F (44-52), 2 (53-62), 3A (64-71),
3B (71-78), 3C (78-92), 4 (93-106), 5A (108-112),
5B (112-115), 5C (113-120), 5D (118-122),
5E (122-124), 5F (125-130), 5G (130-133),
6A (134-137), 6B (137-141), 6C (143-147),
6D (147-150);
Texture : SPARSELY PHYRIC,FINE-GRAINED,BLACK GLASS RINDS AT
INTERVALS 0-2+64-65+100-102+138-142CM;
Structure : PILLOW BASALT,LIMESTONE OCCURS PARTLY AS VEIN
FILLING,BOUNDARY BETWEEN LIMESTONE & BASALT IS OFTEN
VERY IRREGULAR(LOBES);
Alteration : FRESH TO MOD
Comments : GRAY(2.5Y N6/0) BASALT;
Vesicles :
Location: Filling:
Shape : IRREGULAR
NO VISIBLE ROUND VESICLES,PCE 1E HAS A FEW
IRREGULAR VESICLES COATED WITH CALCITE CEMENT;
Phenocrysts: PLAGIOCLASE ( <2%)
Size(mm): 1-7
OLIVINE ( <1%)
Size(mm): <2
PLAG PHENOS SUBHEDRAL(SLIGHTLY RESORBED?) & PARTLY
EQUANT & PARTLY NEEDLE-LIKE,OL PHENOS ARE EUHEDRAL
& ANHEDRAL RESIDUES FILLED WITH BROWN CLAY.MINS;
Replacement: CALCITE
CALCITE COATS SOME VESICLES;
CLAY MINERALS
Minerals Replaced: OL
CLAY.MINS REPLACE OL;
Leg : 82 Top/Bottom Interval(mm): 0/1250 Analyst: Rideout, M.
Hole: 563 Sample Midpoint (m) : 376.25
Core: 25 Top of Core Depth (m) : 373.50
Sect: 2 Top of Section Depth(m): 375.00
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 1A (0-6), 1B (8-13), 1C (13-18), 1D (16-19),
1E (20-27), 1F (27-32), 1G (32-35), 2A (38-47),
2B (47-51), 2C (51-59), 2D (60-64), 3A (66-75),
3B (76-86), 3C (87-101), 3D (101-107), 3E (107-121),
3F (122-125);
Texture : SPARSELY PHYRIC,FINE-GRAINED,VARIOLITIC ZONE;
Structure : PILLOW BASALT,FRACTURES,CALCITE VEINS;
Alteration : FRESH TO MOD
NTERVALS 35-45CM, 55-75CM, 81-125CM;
MOD
0-35CM, 45-55CM, 75-81CM,
OL ALTERED,ALTERATION ALONG FRACTURES & VEINS &
NEAR LIMESTONE PATCHES;
Comments : GRAY(2.5Y N6/0) BASALT IN FRESHER PARTS,SOME BASALT
ALTERED TO LIGHT GRAY(10YR 6/0) OR YELLOWISH-BROWN
(10YR 5/8),ALTERATION NEAR LIMESTONE PATCHES HAS
GRAY(2.5Y N6/0) BASALT;
Vesicles : VESICLES ABSENT EXCEPT FOR THOSE PRESENT NEAR
GLASS(& THESE CAN ONLY BE SEEN WITH A HAND LENS);
Phenocrysts: PLAGIOCLASE ( 1-2%)
Size(mm): 1-5
OLIVINE ( <1%)
Size(mm): <2
PLAG PHENOS ARE NEEDLE-LIKE OR 2-5MM DIAMETER
ROUNDED AGGREGATES &/OR GLOMEROCRYSTS,OL PHENOS
ARE ANHEDRAL TO EUHEDRAL ALTERATION RESIDUE DARK
ORANGE IN COLOR & ARE SPARSELY SCATTERED AS WELL;
Replacement: CALCITE
CALCITE VEINS;
CLAY MINERALS
Minerals Replaced: OL
DARK ORANGE-COLORED CLAY.MINS;
Leg : 82 Top/Bottom Interval(mm): 1250/1500 Analyst: Rideout, M.
Hole: 563 Sample Midpoint (m) : 376.50
Core: 25 Top of Core Depth (m) : 373.50
Sect: 2 Top of Section Depth(m): 376.25
LITHOLOGY: GLASS BRECCIA;
LIMESTONE;
Piece No. : PCES 4A (128-134), 4B (134-141), 4C (141-149);
Comments : GLASS BRECCIA IN A CALCITE & LIMESTONE MATRIX,CLASTS
ARE ANGULAR(FEW MM TO FEW CM IN DIAMETER),SOME
PALAGONITIZATION OF GLASS CLASTS OCCURS AS WELL AS A
PALAGONITE-TINTED SEDIMENTARY PRODUCT BETWEEN CLASTS
& MATRIX;
Alteration : FRESH TO MOD
Replacement: CALCITE
PALAGONITE
Minerals Replaced: GLASS
GLASS CLASTS PALAGONITIZED;
Leg : 82 Top/Bottom Interval(mm): 0/ 200 Analyst: Rideout, M.
Hole: 563 Sample Midpoint (m) : 376.70
Core: 25 Top of Core Depth (m) : 373.50
Sect: 3 Top of Section Depth(m): 376.50
LITHOLOGY: GLASS BRECCIA;
LIMESTONE;
Piece No. : PCES 1A (1-5), 1B (6-11), 1C (11-19);
Comments : GLASS BRECCIA IN A CALCITE & LIMESTONE MATRIX,CLASTS
ARE ANGULAR WITH EDGES PALAGONITIZED,FEW LARGE(FEW
CM) FINE-GRAINED BASALT CLASTS ARE LIGHT-BROWNISH-
GRAY(10YR 6/2) & ALTERED;
Alteration : FRESH TO MOD
Replacement: CALCITE
PALAGONITE
Minerals Replaced: GLASS
GLASS CLASTS PALAGONITIZED;
Leg : 82 Top/Bottom Interval(mm): 200/ 750 Analyst: Rideout, M.
Hole: 563 Sample Midpoint (m) : 377.25
Core: 25 Top of Core Depth (m) : 373.50
Sect: 3 Top of Section Depth(m): 376.70
LITHOLOGY: PLAG-OL SPARSELY PHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 2A (21-27), 2B (27-36), 3 (37-48), 4A (52-57),
4B (57-60), 4C (61-65), 4D (65-70), 4E (71-75);
Texture : SPARSELY PHYRIC,FINE-GRAINED,GLASS ON PCES 2A-2B;
Structure : PILLOW BASALT;
Alteration : FRESH TO MOD
PCES 3-4;
MOD
PCE 2,
GLASSY ZONES ARE ALTERED,GRAVEL OF PCE 3 IS MORE
ALTERED THAN PREVIOUS SECTIONS;
Comments : BASALT IS GRAY TO LIGHT BROWNISH GRAY(2.5Y N6/0-
10YR 6/2),PCE 3 IS GRAVEL;
Vesicles : Size(mm): Percent: 0
Phenocrysts: PLAGIOCLASE
OLIVINE
ABUNDANCE OF PHENOS SIMILAR TO CORES 25-1 & 25-2,
MICROPHENOS OF DARK ORANGE-BROWN ALTERATION IS
RESIDUE OF OL;
Replacement: UNIDENTIFIED
Minerals Replaced: OL
DARK ORANGE-BROWN UNIDENT.MIN MICROPHENOS ARE
RESIDUE OF OL;
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