Leg : 65 Top/Bottom Interval(mm): 0/ 850 Analyst: Zolotarev, B.
Hole: 482B Sample Midpoint (m) : 139.35
Core: 10 Top of Core Depth (m) : 129.50
Sect: 7 Top of Section Depth(m): 138.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (0-10), 2 (12-18), 3 (21-29), 4 (32-35),
5A (38-44), 5B (44-46), 6A (49-55), 6B (49-56),
7A (59-67), 7B (59-65), 7C (65-67), 8 (70-75),
9 (77-85);
Texture : PCES(1,2,3) ARE FINE-GRAINED, PCES 4-9 BECOME
LIGHTER AND COARSER GRAINED, GENERALLY APHYRIC;
Structure : MASSIVE, VEINLETS UP TO 1.5MM FILLED WITH CALCITE
AND LATER PYRITE IN PCES(1,2,6), PCES 1 & 2 HAVE
1.5MM FRACTURES BORDERED BY ALTERATION HALOS OF 1CM
WITH LOWER PART RICH IN SULFIDES;
Alteration : FRESH
SOME ALTERATION HALOS;
Comments : TOP OF PCE 1 IS OLIVE GREY SILTY CLAY-BASE OF SED
SECTION, SOME SULFIDES DISSEMINATED THROUGHOUT ROCK
BUT USUALLY AROUND ALTERATION HALOS, CORE IS PART OF
LARGER COOLING UNIT, DARK GREY TO LIGHTER DOWN CORE;
Vesicles : Size(mm): 0.5-8 Percent: <1
Location: Filling: CALCITE,ZEOLITE
Location: Filling: CLAY,PYRITE
ID ZEOLITE UNCERTAIN,PYRITE IN UPPERMOST PCES;
Phenocrysts: PLAGIOCLASE
Size(mm): TO 1
PHENOS VISIBLE IN PCES 1 & 2, ACICULAR PLAG;
Replacement: CALCITE
ZEOLITE
CLAY
SULFIDES
PYRITE
PYRITE DISSEMBLED THROUGHOUT GROUNDMASS;
Leg : 65 Top/Bottom Interval(mm): 0/1400 Analyst: Morrison, M. Ann
Hole: 482B Sample Midpoint (m) : 138.40
Core: 11 Top of Core Depth (m) : 137.00
Sect: 1 Top of Section Depth(m): 137.00
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (0-6), 2A (8-12), 2B (11-26), 2C (16-30),
2D (29-37), 2E (38-46), 2F (46-55), 2G (54-60),
3 (62-69), 4 (70-85), 5 (86-92), 6A (94-101),
6B (100-111), 6C (111-117), 7 (118-125), 8 (127-129)
9 (133-142);
COARSE GRAINED, APHYRIC;
Structure : VEINS OF CALCITE IN PCES(2D-G,4,6) WITH THIN RIMS OF
CALCITE ON VEINS, VEIN IN 2F-G ARE 1MM WIDE REST
<0.5, MASSIVE;
Alteration : FRESH
NO MEASURABLE ALTERATION HALOS;
Comments : SAME UNIT AS 10-7, GREY;
Vesicles : Size(mm): Percent: <1
Location: Filling: SMECTITE,CALCITE
SMALL VESTICLES SCATTERED THROUGHOUT MAINLY FILLED
WITH SMECTITE AND CENTERS OF CALCITE IN THOSE
>0.5MM;
Phenocrysts: PLAGIOCLASE
ACICULAR PLAG IN PCE 5;
Replacement: CALCITE
SMECTITE
SULFIDE
DISSEMINATED SULFIDES THROUGHOUT BUT MAINLY
CONCENTRATED AROUND VEINS IN PCES(1,4,6);
Leg : 65 Top/Bottom Interval(mm): 0/1460 Analyst: Zolotarev, B.
Hole: 482B Sample Midpoint (m) : 139.96
Core: 11 Top of Core Depth (m) : 137.00
Sect: 2 Top of Section Depth(m): 138.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (0-4), 2 (7-13), 3 (6-19), 4 (20-33),
5A, (35-47), 5B (47-55), 5C (55-59), 6 (60-70),
7 (71-90), 8 (93-100), 9 (101-114), 10 (116-120),
11 (121-135), 12 (137-146);
Texture : FINE GRAINED, APHYRIC;
Structure : CALCITE VEINS CONTAINING SOME PYRITE IN PCES(5C,6,
7,8), MASSIVE;
Alteration : FRESH;
Comments : GREY, SIMILAR TO 10-7 & 11-1;
Vesicles : Size(mm): 0.5-2 Percent: 1-2
Location: Filling: CALCITE,ZEOLITE
Location: Filling: CLAY
CLAY IS GREEN-BLUE, ID ZEOLITE UNCERTAIN;
Replacement: CALCITE
ZEOLITE
ID ZEOLITE UNCERTAIN;
CLAY
PYRITE
MINOR PYRITE DISSEMINATED IN GROUNDMASS;
Leg : 65 Top/Bottom Interval(mm): 0/ 340 Analyst: Morrison, M. Ann
Hole: 482B Sample Midpoint (m) : 140.34
Core: 11 Top of Core Depth (m) : 137.00
Sect: 3 Top of Section Depth(m): 140.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (0-8), 2 (12-23), 3 (25-44);
Texture : COARSE GRAINED, APHYRIC;
Structure : CALCITE-SMECTITE VEINS PCE 3 AND AT JUNCTION OF PCES
1 & 2;
Alteration : FRESH;
Comments : LIGHT GREY, SAME AS 10-7,11-1, 11-2;
Vesicles : Size(mm): 0.-1.5 Percent: <1
Location: Filling: SMECTITE,CALCITE
MECTITE LINED SOME WITH CALCITE CENTRES;
Replacement: CALCITE
SMECTITE
SULFIDE
Leg : 65 Top/Bottom Interval(mm): 0/ 400 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 139.40
Core: 12 Top of Core Depth (m) : 139.00
Sect: 1 Top of Section Depth(m): 139.00
LITHOLOGY: SEDIMEMT;
SILTY CLAY;
Piece No. : PCE 1 (0-4);
Comments : OLIVINE GREY, NO SIGNS OF BAKING, NO CHANGE IN GRAIN
SIZE OF ADJACENT BASALT;
Leg : 65 Top/Bottom Interval(mm): 500/1450 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 140.45
Core: 12 Top of Core Depth (m) : 139.00
Sect: 1 Top of Section Depth(m): 139.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 2 (5-10), 3A (12-15), 3B (15-22), 4 (24-30),
5 (30-38), 6 (42-44), 7A (46-50), 7B (51-54),
8 (55-69), 9 (70-80), 10 (82-93), 11A (94-103),
11B (103-114), 12 (115-122), 13 (124-130),
14 (131-145);
Texture : APHYRIC;
Structure : PCES 10-14 CALCITE & SMECTITE VEINS, SMECTITE VEINS
PCES 2 & 5-14, MASSIVE;
Alteration : FRESH
PCE 8 IS ALTERED WITH PATCHES OF SMECTITE AND SOME
DISSEMINATED SULFIDE;
Comments : GREY, PCE 1 IS SEDIMENT;
Vesicles : Size(mm): 15-20 Percent:
Location: S Filling: MECTITE, SULFIDE
PCE 5 HAS 4 VESICLES, PCE 6 HAS SEVERAL SMALL
2-3MM VESICLES, PCE 7 HAS A LARGE 1CM AND SEVERAL
SMALL ONES, VESICLE SURROUNDED BY SMECTITE AND
DISSEMINATED SULFIDE;
Phenocrysts: PLAGIOCLASE
SINGLE PLAG PHENO FOUND IN PCE 14;
Replacement: SMECTITE
SULFIDE
CALCITE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 482B Sample Midpoint (m) : 142.00
Core: 12 Top of Core Depth (m) : 139.00
Sect: 2 Top of Section Depth(m): 140.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
PCES 1A (0-20), 1B (20-38), 2A (40-47), 2B (47-54),
2C (54-59), 3 (61-72), 4 (73-80), 5 (82-91),
6A (95-105), 6B (105-116), 7 (117-121),
8A (123-128), 8B (127-130), 8C (131-138),
9 (140-150);
Texture : FINE GRAINED, APHYRIC;
Structure : VERY THIN CARBONATE VEINS IN PCES(1A-B, 2A-B, 4-5, &
6B) WITH PCES 5 & 8A-B CONTAINING TRACE PYRITE,
MASSIVE;
Alteration : FRESH;
Comments : GREY, SAME UNIT AS 12-1;
Vesicles : Size(mm): TO 0.5 Percent:
Location: Filling: CARB, CLAY
CLAY NOT CERTAIN, ONLY TRACE VESICLES;
Replacement: CARBONATE
CLAY
CLAY QUESTIONABLE;
PYRITE
Leg : 65 Top/Bottom Interval(mm): 0/ 300 Analyst: Morrison, M. Ann
Hole: 482B Sample Midpoint (m) : 142.30
Core: 12 Top of Core Depth (m) : 139.00
Sect: 3 Top of Section Depth(m): 142.00
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (0-7), 2 (9-21), 3 (24-29);
Texture : APHYRIC;
Structure : CALCITE VEINS IN ALL 3 PCES, MASSIVE;
Alteration : FRESH;
Comments : GREY, SIMILAR TO 12-2;
Vesicles : Size(mm): Percent: 0
NO OBVIOUS VESICLES;
Size(mm): 0.1-0.3 Percent: <<1
Location: Filling: SMECTITE
Shape : ROUND
VERY SMALL SMECTITE ROUND AMYGDULES UNDER
BINOCULAR SCOPE;
Replacement: CALCITE
SMECTITE
Leg : 65 Top/Bottom Interval(mm): 0/1430 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 145.43
Core: 13 Top of Core Depth (m) : 144.00
Sect: 1 Top of Section Depth(m): 144.00
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (0-12), 2 (16-22), 3 (23-33), 4 (34-42),
5A (44-55), 5B (54-63), 5C (64-70), 5D (70-76),
5E (77-88), 6A (90-100), 6B (98-109), 6C (109-119),
6D (118-143);
Texture : APHYRIC, EQUIGRANULAR;
Structure : DISSEMINATED SULFIDE AND CALCITE IN FINE VEINS,
MASSIVE;
Alteration : FRESH;
Comments : CONTINUING FROM CORE 11-3, ORIENTATION UNKNOWN FOR
PCE 2;
Vesicles : Size(mm): Percent: <0.5
Location: Filling: CALCITE,SMECTITE
VESICLES ARE EXTREMELY RARE AND VERY SMALL, ID
UNCERTAIN FOR SMECTITE;
Replacement: CALCITE
SMECTITE
SULFIDE
Leg : 65 Top/Bottom Interval(mm): 0/1370 Analyst: Zolotarev, B.
Hole: 482B Sample Midpoint (m) : 146.87
Core: 13 Top of Core Depth (m) : 144.00
Sect: 2 Top of Section Depth(m): 145.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (0-20), 2 (24-26), 3 (30-37), 4 (40-46),
5 (52-57), 6 (60-64), 7 (70-77), 8 (80-82),
9 (84-92), 10 (95-96), 11 (100-106), 12 (108-112),
13 (116-118), 14 (122-127);
Texture : FINE GRAINED, APHYRIC, PCE 4 IS FINE GRAINED;
Structure : PCE 1 HAS CARBONATE VEIN WITH TRACE PYRITE, MASSIVE;
Alteration : FRESH;
Comments : GREY, PCE 4 IS TOP OF COOLING UNIT AND FINE GRAINED;
Vesicles : Size(mm): 0-0.2 Percent:
Location: Filling: CARB,CLAY
SMALL VESICLES, CLAY IS BLUE GREY;
Replacement: CARBONATE
CLAY
CLAY IS BLUE GREY;
PYRITE ( TR%)
ONLY IN CARBONATE VEIN;
Leg : 65 Top/Bottom Interval(mm): 0/ 900 Analyst: Morrison, M. Ann
Hole: 482B Sample Midpoint (m) : 148.90
Core: 14 Top of Core Depth (m) : 148.00
Sect: 1 Top of Section Depth(m): 148.00
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (0-5), 2 (7-10), 3A (12-20), 3B (20-26),
3C (26-30), 4 (32-35), 5 (36-41), 6 (43-45),
7 (47-52), 8 (54-61), 9 (63-66), 10 (67-70),
11 (73-77), 12 (80-83), 13 (85-90);
Texture : APHYRIC, BECOMES FINE GRAINED PCES 8-13 WITH 13 FINE
GRAINED, PCES(8,9,13) HAVE SMALL AND SPARSE
GLOMEROPHYRIC CLUSTERS OF PLAG AND CPX(2X1.5MM IN
PCES 8 & 9, & 3.5X4.5 IN PCE 13);
Structure : CALCITE-SMECTITE VEIN IN PCE 13, MASSIVE;
Alteration : FRESH;
Comments : INTERPRETED AS TOP OF COOLING UNIT 3(APPEARS TO BE
CONTINUATION OF UNIT IN CORE 13), PCE 5 IS FINE-
GRAINED-TOP OF COOLING UNIT 4, GREY BUT DARKENS
IN COLOR FROM PCES 8-13, SMECTITE AT BASE OF PCE 13;
Vesicles : Size(mm): Percent: 0
SULFIDE FILLED VUG IN PCE 1;
Phenocrysts: PLAGIOCLASE
CLINOPYROXENE
Replacement: CALCITE
SMECTITE
Leg : 65 Top/Bottom Interval(mm): 910/1500 Analyst: Morrison, M. Ann
Hole: 482B Sample Midpoint (m) : 149.50
Core: 14 Top of Core Depth (m) : 148.00
Sect: 1 Top of Section Depth(m): 148.91
LITHOLOGY: APHYLIC BASALT;
Piece No. : PCES 14 (91-99), 15 (101-106), 16 (110-112),
17 (115-122), 18 (124-126), 19 (132-137),
20 (140-146);
Texture : APHYLIC, FINE GRAINED, PCE 14 HAS GLASS ON TOP
MARGIN;
Structure : SMECTITE COATING ON ALL JOINTS AND FRACTURES
EPECIALLY IN PCES 16 & 20;
Alteration : FRESH;
PCES 16 & 20 VERY ALTERED;
Comments : RUBBLY, GREY;
Vesicles : Size(mm): Percent: 0
Groundmass : PLAGIOCLASE
ACICULAR PLAG;
Replacement: SMECTITE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 151.00
Core: 14 Top of Core Depth (m) : 148.00
Sect: 2 Top of Section Depth(m): 149.50
LITHOLOGY: APHYLIC BASALT;
MASSIVE;
Piece No. : PCES 1 (0-6), 2 (8-15), 3 (17-20), 4A (25-29),
4B (29-32), 5 (33-40), 6 (42-45), 7 (46-50),
8 (52-57), 9 (59-63), 10 (70-76), 11 (85-90),
12 (93-100), 13 (102-104), 14 (109-115),
15 (125-132), 16 (134-143), 17 (145-147);
Texture : APHYRIC, FINE GRAINED, PCE 16 HAS A FRESH GLASS
RIND, PCE 1 HAS PLAG-CPX GLOMEROCRYSTS PRESENT AS
SMALL CLOTS, PCES(9,10,13,14)-LOOSE FRAGMENTS;
Structure : PCES(2,3,9 ETC.) ARE FRACTURE SURFACES COATED BY
GREEN SMECTITE, FINE VEINLETS IN LOWEST PART ARE
UNFILLED -CALCITE & SILICA RARE, MASSIVE;
Alteration : FRESH
ALTERED SURFACES LARGELY CONFINED TO THE UPPER
COOLING MARGIN IN PCE 1(ALTERED GLASS);
Comments : PCE 1 IS BEGINING OF NEW COOLING UNIT;
Vesicles : Size(mm): Percent: 0
OR VERY RARE;
Groundmass : PLAGIOCLASE
CLINOPYROXENE
Replacement: CALCITE
SILICA
IO FOR SILICA UNCERTAIN, CALC & SILICA VERY RARE;
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 152.50
Core: 14 Top of Core Depth (m) : 148.00
Sect: 3 Top of Section Depth(m): 151.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (0-7), 2A (9-11), 2B (11-17), 2C (17-20),
3 (21-27), 4 (30-40), 5 (42-60), 6 (60-66),
7 (68-74), 8 (77-82), 9 (83-90), 10 (93-97),
11 (100-116), 12 (108-118), 13 (120-131),
14 (133-137), 15 (140-143), 16 (146-150);
Texture : MOTTLING OF CUT SURFACES PROBABLY REPRESENT
Piece No. : GROUNDMASS GLOMEROPHYRIC CLOTS OF PLAG-CPX;
Structure : PCES ARE FRAGMENTED, JOINT PLANES OFTEN COATED WITH
GREEN SMECTITE AND CHALCEDONY(?), FINE VEINS RARELY
FILLED BY CALCITE, PCES (3-5,11) HAVE THICK SMECTITE
COATINS ON JOINTS;
Alteration : FRESH
INTERIOR OF JOINTS-PCES(3-5,11) APPEAR TO BE
FRESH
Comments : LITHOLOGY CONTINUES FROM PREVIOUS CORE SECTION;
Groundmass : PLAGIOCLASE
ACICULAR PLAG VISIBLE;
PYROXENE
GLOMEROPHYRIC CLOTS OF PLAG-PYX;
Replacement: SMECTITE
CALCITE
Leg : 65 Top/Bottom Interval(mm): 0/ 900 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 153.40
Core: 14 Top of Core Depth (m) : 148.00
Sect: 4 Top of Section Depth(m): 152.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (0-6), 2 (10-15), 3 (16-22), 4 (25-29),
5 (31-36), 6 (40-52), 7 (52-57), 8 (60-65),
9 (67-72), 10 (75-80), 11 (84-90);
Texture : APHYRIC, SIMILAR O 14-3 BUT COARSER GRAINED, PCE 11
IS SLIGHTLY FINER GRAINED;
Structure : CALCITE-SMECTITE VEINS IN PCES(1,5-7), SMECTITE
ON JOINTS AND FRACTURE, PCE 9 HAS LARE VUG/VEIN
WITH SMALL BRECCIATED BASALT FRAGMENTS INSIDE REST
OF FILLING IS MAINLY SMECTITE, MASSIVE;
Alteration : FRESH;
Comments : GREY, NO OBVIOUS PHENOS OR VESICLES;
Vesicles : Size(mm): Percent: 0
PCE 9 HAS LARE VUG/VEIN;
Replacement: SMECTITE
Leg : 65 Top/Bottom Interval(mm): 0/ 50 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 157.05
Core: 15 Top of Core Depth (m) : 157.00
Sect: 1 Top of Section Depth(m): 157.00
LITHOLOGY: SEDIMENT;
OLIVE MUDSTONE;
Piece No. : PCE 1 (0-5);
Comments : % PROBABLY FALLEN IN FROM SEDIMENTARY SECTION;
Leg : 65 Top/Bottom Interval(mm): 700/1140 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 158.14
Core: 15 Top of Core Depth (m) : 157.00
Sect: 1 Top of Section Depth(m): 157.70
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCS 2 (7-11), 3 (13-19), RA (21-25), 4B (24-31),
5 (34-39), 6 (40-43), 7 (45-52), 8 (52-56),
9A (60-70), 9B (67-73), 10 (75-80), 11A (82-87),
11B (88-92), 12 (95-101), 13 (103-105),
14A (107-111), 14B (108-114);
Texture : MEDIUM TO FINE GRAINED, APHYRIC;
Structure : CARBONATE & ZEOLITE(?) AND BLUE-GREEN CLAY(?) ALONG
SOME IRREGULAR APPROX. 1MM FRACTURES;
Alteration : FRESH;
Comments : GREY, SIMILAR BUT FINER-GRAINED THAN 14-4, PROBABLY
BASAL PART OF VERY THICK COOLING UNIT;
Vesicles : Size(mm): <1 Percent: <1
Location: Filling: CARB/CLAY
ID CARB UNCERTAIN;
Replacement: CARBONATE
ZEOLITE
CLAY
CLAY IS BLUE-GREEN;
Leg : 65 Top/Bottom Interval(mm): 1160/1500 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 158.50
Core: 15 Top of Core Depth (m) : 157.00
Sect: 1 Top of Section Depth(m): 158.16
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCES 15A (116-120), 15B (121-126), 15C (125-130),
15D (131-134), 16 (135-140), 17A (141-147),
17B (146-148), 17C (148-150);
Texture : FINE GRAINED, PHYRIC, GREENISH SMECTITE AND SULFIDE
POSSIBLY ARE COATING OF HIGHLY ALTERED GLASS RINDS
INTERPRETED AS FINE GRAINED TOP SELVAGE TO THICKER
UNDERLYING PLAG-PHYRIC COOLING UNIT 9, IN SMALL
FRAGMENTS;
Structure : SOME GREENISH SMECTITE AND SULFIDE ALONG THIN
FRACTURES;
Alteration : FRESH;
Comments : DARK GREY, INTERPRETED AS THICKER UNDERLYING COOLING
UNIT 9;
Phenocrysts: PLAGIOCLASE ( <2%)
Size(mm): <3
Replacement: SMECTITE
GREENISH
SULFIDE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 160.00
Core: 15 Top of Core Depth (m) : 157.00
Sect: 2 Top of Section Depth(m): 158.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (0-10), 2 (12-20), 3 (22-30), 4 (33-41),
5 (43-51), 6 (54-60), 7 (63-70), 8A (73-75),
8B 75-77), 8C (77-82), 8D (84-86), 9 (87-97),
10A (99-102), 10B (102-115), 11A (116-121),
11B (116-120), 11C (122-130), 11D (127-142),
12A (144-145), 12B (146-150), 12C (144-150);
Texture : FINE TO MEDIUM GRAINED, BECOMES COARSER DOWN
SECTION;
Structure : FRACTURES ARE RARE AND THIN WITH CLAY & CARBONATE &
ZEOLITE(?) & SOME LATE STAGE SULFIDE, MASSIVE;
Alteration : FRESH;
Comments : SECTION PROBABLY PART OF THICK COOLING UNIT THAT
STARTS IN CORE 15-1 & CONTINUE INTO LOWER SECTIONS
LIGHT TO MEDIUM GREY-COLOR BECOMES LIGHTER AND GRAIN
COARSER AND VOLUME PERCENTAGE HIGHER (TO CA.
10%, <1MM) DOWNWARDS IN SECTION;
Vesicles :
Location: Filling: CLAY
SECONDARY MINERALS DOMINANTLY BLUISH-GREEN CLAY;
Phenocrysts: PLAGIOCLASE ( <1%)
Size(mm): <
SCATTERED THROUGHOUT UNIT;
Replacement: CLAY
CARBONATE
ZEOLITE
ID ZEOLITE UNCERTAIN;
SULFIDE
LATE STAGE;
Leg : 65 Top/Bottom Interval(mm): 0/1400 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 161.40
Core: 15 Top of Core Depth (m) : 157.00
Sect: 3 Top of Section Depth(m): 160.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (408), 2 (017), 3 (20-30), 4 (31-45),
5 (46-56), 6 (57-66), 7 (70-77), 8A (81-87),
8B (84-88), 9 (90-103), 10 (105-120), 11A (122-131),
11B (131-140);
Texture : MEDIUM GRAINED, SLIGHT INCREASE IN GRAIN SIZE DOWN
SECTION;
Structure : RARE HARILINE FRACTURES LESS ABUNDANT THAN OVER-
LIYING UNIT 15-2, MASSIVE;
Alteration : FRESH;
Comments : PART OF THICK COOLING UNIT INCLUDING PART OF 15-1,
ALL 15-2, AND 15-4, LIGHT GREY;
Vesicles : Size(mm): Percent: 5-10
Location: Filling: CLAY
Shape : ROUND
BECOMELARGER(1-2MM) DOWNWARDS, CLAY IS BLUE
GREEN;
Phenocrysts: PLAGIOCLASE ( <1%)
Size(mm): TO 5
INCREASE IN SIZE DOWNWARDS;
Replacement: CLAY
Leg : 65 Top/Bottom Interval(mm): 0/1450 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 162.95
Core: 15 Top of Core Depth (m) : 157.00
Sect: 4 Top of Section Depth(m): 161.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1A (0-7), 1B (7-20), 2 (23-27), 3A (30-37),
3B (37-44), 3C (44-46), 4 (47-57), 5 (59-66),
6A (70-84), 6B (85-91), 7A (94-97), 7B (98-102),
8 (103-112), A (114-121), 9B (130-144);
Texture : MEDIUM GRAINED, PHYRIC,GLOMEROPHYRIC SEGREGATION OF
PLAIOCLASE OBSERVED SOMEWHERE (PCE 6A);
Structure : FRACTURES RARE AND THIN IN PCES(5,6,9) & FILLED WITH
LIGHT GREY MATERIAL(CLAY MINERALS?) WHICH CONTAIN
TRACE PYRITE;
Alteration : FRESH;
Comments : SAME COOLING UNIT AS 15-3, LIGHT GREY;
Vesicles : Size(mm): 0.5-0.2 Percent: 5-10
Location: Filling: CLAY,VOLCANIC
Location: Filling: GLASS
GRAY-GREEN GRAY-BLUE MATERIAL AND VOLCANIC GLASS-
ID UNCERTAIN;
Phenocrysts: PLAGIOCLASE ( 3-5%)
Size(mm): 1-3
Replacement: PYRITE
CLAY
NOT CERTAINCLAY;
Leg : 65 Top/Bottom Interval(mm): 0/ 660 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 163.66
Core: 15 Top of Core Depth (m) : 157.00
Sect: 5 Top of Section Depth(m): 163.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1A (0-4), 1B (6-12), 2A (14-19), 2B (20-26),
3(30-66);
Texture : MEDIUM GRAINED, MOD PHYRIC;
Alteration : FRESH;
Comments : LIGHT GREY, LOWER PART OF COOLING UNIT BEGINING WITH
BASE OF 15-1 THRU 15-5, BASAL PART IN SMALL BROKEN
PIECES;
Vesicles : Size(mm): TO 2 Percent: <10
Location: Filling: CLAY
Shape : ROUND
SMALLER ONES FILLED WITH DARK GREEN CLAY, LARGER
WITH DARK CLAY RIM CENTRE LIGHT COLORED CLAY WITH
SHRINKAGE CRACKS;
Phenocrysts: PLAGIOCLASE ( <5%)
Size(mm): <5
Replacement: CLAY
Leg : 65 Top/Bottom Interval(mm): 0/1450 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 167.45
Core: 16 Top of Core Depth (m) : 166.00
Sect: 1 Top of Section Depth(m): 166.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1A (2-9), 1B (10-14), 2 (17-24), 3A (27-34),
3B (35-40), 4 (42-50), 5 (52-60), 6A (71-84),
6B (82-90), 7 (92-102), 8 (104-110), 9 (114-122),
10 (125-131), 11 (134-136), 12 (140-145);
Texture : MEDIUM GRAINED, PHYRIC, PCES 1A-B WITH GLASSY
(SOMEWHAT ALTERED) CHILLED RINDS(1-2MM THICK);
Structure : RARE HAIRLINE FRACTURES, MASSIVE;
Alteration : FRESH;
Comments : LIGHT GREY, PROBABLY PART OF NEW COOLING UNIT,
PETRORAPHICALLY SIMILAR TO OVERLYING COOLING UNIT
(15-1 TO 15-5);
Vesicles : Size(mm): <1 Percent: <5
Location: Filling: CLAY
Phenocrysts: PLAGIOCLASE ( <5%)
Size(mm): <5
SOME GLOMEROCRYSTS MOSTLY PLAG, SOME CPX(?);
Replacement: CLAY
CLAY VARIES FROM DARKGREEN TO LIGHT;
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 482B Sample Midpoint (m) : 169.00
Core: 16 Top of Core Depth (m) : 166.00
Sect: 2 Top of Section Depth(m): 167.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCES 1 (5-15), 2 (17-29), 3A (32-36), 3B (33-44),
3C (45-57), 4A (60-71), 4B (72-80), 5 (82-105),
6 (107-121), 7 (125-131), 8 (133-147);
Texture : MOD PHYRIC, MEDIUM GRAINED, PLAG & CPX GLOMEROPHYRIC
SEGREGATION OBSERVED IN PCES(4A-B,5);
Structure : FRACTURES IN PCES(1,2,8) NOT SO RARE & THIN FILLED
WITH CLAY;
Alteration : FRESH;
Comments : ALL SAMPLES SAME AS 16-1, LIGHT GREY;
Vesicles : Size(mm): .5 TO 2 Percent: <5
Location: Filling: CLAY, CARBONATE
Phenocrysts: PLAGIOCLASE ( 3-5%)
Size(mm): 1-5
Replacement: CLAY
CARBONATE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 169.00
Core: 16 Top of Core Depth (m) : 166.00
Sect: 2 Top of Section Depth(m): 167.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
MASSIVE;
Piece No. : PCES A (2-13), 1B (12-16), 1C (17-25), 2A (28-35),
2B (36-48), 3A (60-65), 3B (36-38), 4A (72-85),
4B (84-90), 5 (91-98), 6A (102-104), 6B (104-106),
7A (107-135), 7B (132-137), 8 (138-150);
Texture : MOD PHYRIC;
Structure : SMECTITE COATINGS ON FRACTURES AND JOINTS PCE 2 HAS
WIDER VEIN(0.3MM DOWN CENTRE), MASSIVE;
Alteration : FRESH;
Comments : ALL SAMPLES SIMILA TO 16-1 & 16-2, LIGHT GREY;
Vesicles : Size(mm): 1-2 Percent: <<1
Location: Filling: SMECTITE
Phenocrysts: PLAGIOCLASE ( <5%)
Replacement: SMECTITE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 172.00
Core: 16 Top of Core Depth (m) : 166.00
Sect: 4 Top of Section Depth(m): 170.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (1-15), 2 (17-34), 3 (37-54), 4 (57-63),
5 (65-70), 6 (73-80), 7 (83-97), 8A (100-111),
8B (110-125), 8C (125-136), 8D (136-149);
Texture : MOD PHYRIC, MEDIUM GRAINED;
Structure : VEINLETS OF CARBONATE PRESENT BUT RARE, MASSIVE;
Alteration : FRESH
SOME FAINT SMECTITE PATCHES IN GROUNDMASS;
Comments : CONTINUOUS FROM PREVIOUS CORE SECTION;
Vesicles : Size(mm): <1 Percent: 1
Location: Filling: CARBONATE
RARE;
Phenocrysts: PLAGIOCLASE ( <5%)
Size(mm): 1
CLINOPYROXENE
CCASIONAL GLOMEROCRYSTS OF PLAG & CPX;
Groundmass : OTHER
SOME GLASSY &/OR-CPX RICH ZONES IN PCE 6;
Replacement: CARBONATE
SMECTITE
Leg : 65 Top/Bottom Interval(mm): 0/ 780 Analyst: Morrison, M. Ann
Hole: 482B Sample Midpoint (m) : 172.78
Core: 16 Top of Core Depth (m) : 166.00
Sect: 5 Top of Section Depth(m): 172.00
LITHOLOGY: PLAG MOD PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (2-9), 2 (11-15), 3 (17-23), 4 (25-30),
5 (32-47), 6 (50-59), 7 (61-66), 8 (68-78);
Texture : MOD PHYRIC, SLIGHTLY COARSER GRAINED THAN 16-4;
Structure : SOME SMECTITE COATING ON JOINTS AND FRACTURES,
MASSIVE;
Alteration : FRESH;
Comments : VERY SIMILAR TO 16-4;
Vesicles : Size(mm): Percent: 0
Phenocrysts: PLAGIOCLASE ( <5%)
Size(mm): <5
Replacement: SMECTITE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 176.50
Core: 17 Top of Core Depth (m) : 175.00
Sect: 1 Top of Section Depth(m): 175.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (1-10), 2 (11-16), 3 (19-27), 4A (28-38),
4B (28-40), 4C (41-42), 4D (42-47), 4E (47-55),
5 (57-63), 6 (64-75), 7A (76-78), 7B (77-90),
8 (92-104), 9 (105-120), 10 (121-125), 11 (127-136),
12A (133-137), 12B (137-140), 13 (142-147);
Texture : SPARSELY PHYRIC;
Structure : SMECTITE VEINS ON JOINTS AND FRACTURES, CALCITE-
SMECTITE VEINS IN PCE 6, MASSIVE;
Alteration : FRESH;
Comments : LIGHT GREY, SIMILAR TO 16-5;
Vesicles : Size(mm): Percent: 0
Phenocrysts: ( <<3%)
Size(mm): TO 4
Replacement: SMECTITE
CALCITE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 178.00
Core: 17 Top of Core Depth (m) : 175.00
Sect: 2 Top of Section Depth(m): 176.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (2-9), 2 (11-18), 3 (20-36), 4 (42-60),
5 (62-69), 6 (70-75), 7 (76-80), 8 (83-89),
9 (91-108), 10 (110-115), 11 (117-121),
12 (123-127), 13 (131-147);
Texture : MOD PHYRIC, PCE 2 HAS GLOMEROPHYRIC(?) CLOTS, SOME
PCES SEEM TO HAVE MORE OR FRESHER GLASS IN
MESOSTASIS;
Structure : LITTLE OR NO CALCITE VEINING, SEVERAL FRACTURES
COATED BY GREEN SMECTITE, MASSIVE;
Alteration : FRESH;
Comments : CONTINUED FROM PREVIOUS SECTION;
Vesicles : Size(mm): Percent: 2
Phenocrysts: PLAGIOCLASE ( 1-3%)
Size(mm): 1-2
VARIABLE DISTRIBUTION, IN PCE 2 MAY BE
GLOMEROPHYRIC CLOTS;
Replacement: CALCITE
SMECTITE
Leg : 65 Top/Bottom Interval(mm): 0/ 50 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 184.05
Core: 18 Top of Core Depth (m) : 184.00
Sect: 1 Top of Section Depth(m): 184.00
LITHOLOGY: SEDIMENT;
Piece No. : PCE A (0-6);
Leg : 65 Top/Bottom Interval(mm): 800/1400 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 185.40
Core: 18 Top of Core Depth (m) : 184.00
Sect: 1 Top of Section Depth(m): 184.80
LITHOLOGY: GLASSY BASALT;
Piece No. : PCE 2 (8-14);
Texture : FINE GRAINED, GLASSY, COOLING MARGIN;
Alteration : FRESH
SULFIDE COATING ON EDGE;
Vesicles : Size(mm): 10X3 Percent:
Location: CAL Filling: CITE, SULFIDE
AMYGDULES;
Replacement: CALCITE
SULFIDE
SULFIDE IS DISSEMINATED;
Leg : 65 Top/Bottom Interval(mm): 1400/1500 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 185.50
Core: 18 Top of Core Depth (m) : 184.00
Sect: 1 Top of Section Depth(m): 185.40
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 3 (15-29), 4 (30-45), 5 (38-46), 6 (47-58),
7 (60-63), 8 (65-71), 9 (74-80), 10 (84-87),
11 (90-98), 12 (100-105), 13 (105-107),
14 (110-115), 15 (118-125), 16 (127-135),
17 (135-140), 18 (144-150);
Texture : SPARSELY PHYRIC, GROUNDMASS BECOMES COARSER DOWN
FROM COOLING MARGIN;
Alteration : FRESH;
Vesicles : Size(mm): Percent: <.5
VESICLES VERY SMALL AND SPARSE;
Phenocrysts: PLAGIOCLASE ( 2%)
Size(mm): 1-2
Leg : 65 Top/Bottom Interval(mm): 0/1080 Analyst: Morrison, M. Ann
Hole: 482B Sample Midpoint (m) : 186.58
Core: 18 Top of Core Depth (m) : 184.00
Sect: 2 Top of Section Depth(m): 185.50
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (2-5), 2 (7-13), 3 (15-20), 4 (22-26),
5 (27-32), 6 (34-40), 7 (42-57), 8 (60-73),
9 (74-77), 10 (80-92), 11 (94-102), 12 (103-107);
Texture : SPARSELY PHYRIC;
Structure : SMECTITE-CALCITE VEINS IN PCES 8-9, MASSIVE;
Alteration : FRESH;
Comments : GREY, DARKER IN COLOR THAN BASALT IN CORE 17;
Vesicles : Size(mm): .5-.1-.2 Percent:
Location: Filling: SMECTITE
PCES 1-6 VESICULAR, AMYGDULES DECREASE IN SIZE AND
ABUNDANCE FROM PCE 1 TO PCE 6;
Phenocrysts: PLAGIOCLASE ( 1-3%)
Replacement: SMECTITE
CALCITE
Leg : 65 Top/Bottom Interval(mm): 0/ 400 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 193.40
Core: 19 Top of Core Depth (m) : 193.00
Sect: 1 Top of Section Depth(m): 193.00
LITHOLOGY: APHYRIC BASALT FRAGMENT;
Piece No. : PCE 1 (2-4);
Texture : QUENCHED, GLASSY, APHYRIC, FRAGMENT;
Alteration : FRESH;
Comments : PROBABLY CHILLED MARGIN FROM UNIT IN PREVIOUS CORE
SECTION;
Leg : 65 Top/Bottom Interval(mm): 50/ 200 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 193.20
Core: 19 Top of Core Depth (m) : 193.00
Sect: 1 Top of Section Depth(m): 193.05
LITHOLOGY: SEDIMENT;
Piece No. : PCES 2 (6-10), 3 (12-18);
Leg : 65 Top/Bottom Interval(mm): 200/ 220 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 193.22
Core: 19 Top of Core Depth (m) : 193.00
Sect: 1 Top of Section Depth(m): 193.20
LITHOLOGY: BASALT FRAGMENT;
Piece No. : PCE 4 (20-21);
Texture : SMALL FRAGMENT;
Alteration : FRESH;
Leg : 65 Top/Bottom Interval(mm): 250/ 600 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 193.60
Core: 19 Top of Core Depth (m) : 193.00
Sect: 1 Top of Section Depth(m): 193.25
LITHOLOGY: SEDIMENT FRAGMENT;
Piece No. : PCE 5 (25-60);
Leg : 65 Top/Bottom Interval(mm): 600/1500 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 194.50
Core: 19 Top of Core Depth (m) : 193.00
Sect: 1 Top of Section Depth(m): 193.60
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCES 6 (62-70), 7 (71-80), 8 (83-86), 9 (87-100),
10 (104-113), 11 (113-125), 12 (127-138),
13 (140-144), 14 (145-150);
Texture : PCES 7-14 HAVE INCREASING GRAIN SIZE, QUENCHED,
GLASSY;
Structure : SULFIDE DEPOSITED IN CRACKS, FRACTURES, FEW FINE
CALCITE VEINS;
Alteration : FRESH;
Comments : PCE 7-14 ARE SIMILAR TO PCE 6 BUT WITH INCREASING
GRAIN SIZE, PCE 6 DOWNWARDS REPRESENTS A NEW COOLING
UNIT;
Phenocrysts: PLAGIOCLASE ( 3-5%)
Replacement: SULFIDE
CALCITE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 199.00
Core: 20 Top of Core Depth (m) : 197.50
Sect: 1 Top of Section Depth(m): 197.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (2-5), 2 (6-20), 3A (21-26), 3B (26-33),
4 (35-45), 5 (47-55), 6 (56-62), 7 (64-68),
8 (71-76), 9 (77-86), 10 (87-94), 11 (96-110),
12 (114-117), 13 (120-129), 14 (131-150);
Texture : MOD PHYRIC, PCES 1-9 MAY HAVE ALTERED GROUNDMASS
GLASS PATCHES?;
Structure : VEINLETS DECREASE IN SULFIDE DOWNWARDS, SOME SMALL
BROKEN PCES HAVE SLICKENSIDED SURFACES MASSIVE;
Alteration : SLIGHTLY
ROCK BECOMES FRESHER DOWNWARDS BY BECOMING LIGHTER
IN COLOR LOSING THE MOTTLED TEXTURE COMMON IN PCES
1-9(ALTERED GROUNDMASS GLASS PATCHES?) AND
DECREASE OF SULFIDE IN VEINLETS AND GROUNDMASS,
SMALL BROKEN PCES ARE MORE ALTERED THAN MASSIVE
BASALT BY SHOWING GREENISH-YELLOW COATING DULL
LUSTER ABUNDANT SULFIDE AND SOME HAVE SLICKENSIDED
SMECTITE(?) SURFACES;
Comments : DARK GREY, SIMILAR TO 19-1;
Vesicles : Size(mm): Percent: <<1
Location: Filling: CLAY
VESICLES ARE <<1% EXCEPT PCE 4 WHICH HAS UP TO 5%
NEAR TOP, FILLING IS DARK GREEN CLAY AT RIM
BECOMING VERY LIGHT IN CENTRE;
Phenocrysts: PLAGIOCLASE ( <1%)
Size(mm): <5
Groundmass : GLASS
ALTERED GROUNDMASS GLASS PATCHES?;
Replacement: SULFIDE
CLAY
DARK GREEN CLAY BECOMING LIGHTER TOWARDS CENTRE;
SMECTITE
ID SMECTITE UNCERTAIN, AT SLICKENSIDED SURFACES;
CARBONATE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 200.50
Core: 20 Top of Core Depth (m) : 197.50
Sect: 2 Top of Section Depth(m): 199.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (2-13), 2 (15-28), 3 (30-41), 4 (44-51),
5 (55-69), 6 (72-82), 7A (84-87), 7B (88-95),
8 (97-113), 9 (116-125), 10 (126-140), 11 (141-150);
Texture : MEDIUM TO FINE GRAINED WITH PCES(7A,B) MORE FINE
GRAINED, SOME GLOMEROCRYSTS;
Structure : SLIGHT INCREASE IN FRACTURING, GREEN SMECTITE(?) IN
MANY PCES SLICKENSIDED FILLING VEINLETS GENERALLY IN
CENTRE;
Alteration : SLIGHTLY
SLIGHT INCREASE IN ALTERATION;
Comments : DARK TO MEDIUM GREY, CONTINUATION FROM 20.1, PCE(7A-
B) POSSIBLY TOP OF NEW COOLING UNIT OF SIMILAR
LITHOLOGY;
Phenocrysts: PLAGIOCLASE ( <1%)
Size(mm): <5
Replacement: SMECTITE
GREEN WITH WAXY LUSTER, PERVASIVE IN GROUNDMASS;
SULFIDE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 202.00
Core: 20 Top of Core Depth (m) : 197.50
Sect: 3 Top of Section Depth(m): 200.50
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (0-9), 2 (11-20), 3 (22-28), 4 (29-40),
5 (42-53), 6 (55-84), 7 (85-92), 8 (94-100),
9 (104-110), 10 (114-119), 11 (120-127),
12 (130-135), 13 (137-150);
Texture : FINE TO MEDIUM GRAINED WITH PCES 8-13 MORE FINE
GRAINED;
Structure : FRACTURES VERY COMMON IN SOME PCES(7) FILLED CHEIFLY
WITH GREEN SLICKENSIDED SMECTITE(?), MANY PCES IN 6
BREAK EASILY WITH CLAY AND SULFIDE ALONG FRACTURES,
RARE CARBONATE ALONG HAIRLINE FRACTURES, MASSIVE;
Alteration : SLIGHTLY
MOTTLED TEXTURE DOMINANT IN PCES 1-7(ALTERED
PATCHES OF GROUNDMASS GLASS?);
Comments : GREY, SIMILAR LITHOLOY TO PREVIOUS UNITS WITH AT
LEAST ONE POSSIBLE COOLING BREAK, PCE 12 VERY FINE
GRAINED (NEW COOLING UNIT?);
Phenocrysts: PLAGIOCLASE ( <1%)
Size(mm): <5
Replacement: SMECTITE
ID SMECTITE UNCERTAIN AND GREEN SLICKENSIDED;
CLAY
SULFIDE
CARBONATE
RARE;
Leg : 65 Top/Bottom Interval(mm): 0/ 50 Analyst: Zolotarev, B.
Hole: 482B Sample Midpoint (m) : 202.05
Core: 21 Top of Core Depth (m) : 202.00
Sect: 1 Top of Section Depth(m): 202.00
LITHOLOGY: SEDIMENT;
Piece No. : PCE 1 (2-4);
Leg : 65 Top/Bottom Interval(mm): 70/1500 Analyst: Zolotarev, B.
Hole: 482B Sample Midpoint (m) : 203.50
Core: 21 Top of Core Depth (m) : 202.00
Sect: 1 Top of Section Depth(m): 202.07
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 2 (7-9), 3A (11-20), 3B (20-27), 4 (30-38),
5 (41-44), 6 (46-50), 7 (52-58), 8 (60-66),
9 (68-74), 10 (75-80), 11 (82-89), 12 (91-100),
13 (100-106), 14 (109-133), 15 (115-212),
16A (123-131), 16B (130-14), 16C (145-148);
Texture : FINE GRAINED, SPARSELY PHYRIC;
Structure : FRACTURES FILLED WITH GREENISH DARK MATERIAL(SMEC &
ZEOLITE?) ARE VERY COMMON IN PCES 3-8 & 16, MASSIVE;
Alteration : FRESH;
Vesicles : Size(mm): Percent: 0
Phenocrysts: PLAGIOCLASE ( <1%)
Size(mm): 1-4
Replacement: SMECTITE
ZEOLITE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 205.00
Core: 21 Top of Core Depth (m) : 202.00
Sect: 2 Top of Section Depth(m): 203.50
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (2-6), 2 (9-16), 3 (18-35), 4A (37-50),
4B (50-56), 5A (57-66), 5B (65-74), 6A (75-80),
6B (80-86), 6C (87-92), 6D (93-98), 6E (100-105),
7 (107-115), 8 (106-125), 9 (127-132), 10 (134-142),
11 (145-150);
Texture : MEDIUM GRAINED, SPARSELY PHYRIC;
Structure : SOME HAIRLINE FRACTURES GENERALLY FILLED WITH SMECT
CARB & SULFIDE, VEINLET 1-2MM THICK IN CENTRE OF
PCES 6C-D MOSTLY SILICA(?) FILLED WITH SOME CARB &
SMECTITE, MASSIVE;
Alteration : FRESH
APPEARS FRESHER THAN CORE 20;
Comments : GREY, SECTION CONTINUES FROM 21-1 BUT IS SLIGHTLY
COARSER GRAINED AND CONTINUES INTO 21-3;
Vesicles : Size(mm): <.5 Percent: <10
Location: Filling: SMECTITE
Shape : ROUND TO
Location: Filling:
Shape : IRREGULAR
ID GREEN SMECTITE UNCERTAIN;
Phenocrysts: ( <3%)
Size(mm): <5
Replacement: SMECTITE
CARBONATE
SILICA
SULFIDE
Leg : 65 Top/Bottom Interval(mm): 0/ 500 Analyst: Zolotarev, B.
Hole: 482B Sample Midpoint (m) : 205.50
Core: 21 Top of Core Depth (m) : 202.00
Sect: 3 Top of Section Depth(m): 205.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (2-5), 2 (8-15), 3 (18-21), 4 (25-47);
Texture : MEDIUM GRAINED, SPARSELY PHYRIC;
Structure : FRACTURES VERY RARE AND FILLED WITH GREENISH DARK
MATERIAL (SMECTITE & ZEOLITE?);
Alteration : FRESH;
Comments : SAMPLES SAME AS 21-2, GREY;
Phenocrysts: PLAGIOCLASE ( 1%)
Size(mm): TO 3-4
Replacement: SMECTITE
ZEOLITE
ID UNCERTAIN OF SMECTITE AND ZEOLITE;
Leg : 65 Top/Bottom Interval(mm): 520/1370 Analyst: Zolotarev, B.
Hole: 482B Sample Midpoint (m) : 206.37
Core: 21 Top of Core Depth (m) : 202.00
Sect: 3 Top of Section Depth(m): 205.52
LITHOLOGY: PLAG-CPX MOD PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 5 (52-57), 6 (59-62), 7 (64-70), 8 (73-82),
9 (79-85), 10 (87-94), 11A (96-105), 11B (105-107),
12 (111-117), 13 (120-126), 14 (130-137);
Texture : FINE GRAINED, SPARSELY PHYRIC, PCE 5 IS VERY FINE
GRAINED WITH PCE 6 A LITTLE COARSER;
Structure : PCES 7-14 FEW THIN FRACTURES FILLED WITH CLAY
MINERALS, MASSIVE;
Alteration : FRESH;
Comments : PCE 5 POSSIBLY TOP OF NEW COOLING UNIT OF SIMILAR
LITHOLOGY;
Vesicles : Size(mm): Percent: <.5
PCES 5 & 6, FILLED WITH DARK MATERIAL;
Phenocrysts: PLAGIOCLASE ( 2-5%)
Size(mm): 1.5-4
PCES 5 & 6 2-3% UP TO 1.5MM AND PCES 7-14 5% WITH
SIZES UP TO 3-4MM;
CLINOPYROXENE ( <<1%)
Size(mm): 1-1.5
PCES 7-14 UP TO 1.5MM;
Replacement: CLAY
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Schmincke, H.
Hole: 482B Sample Midpoint (m) : 203.50
Core: 21 Top of Core Depth (m) : 202.00
Sect: 1 Top of Section Depth(m): 202.00
LITHOLOGY: PLAG-CPX MOD PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (2-10), 2A (12-20), 2B (20-25), 3 (28-34),
4 (35-45), 5 (47-55), 6 (56-65), 7A (66-77),
7B (78-88), 7C (89-95), 8 (97-105), 9 (108-115),
10A (117-123), 10B (124-130), 11 (133-130),
12 (142-150);
Texture : FINE TO MEDIUM GRAINED WITH GRAIN SIZE DECREASING
SLIGHTLY DOWNWARDS IN SECTION;
Structure : HAIRLINE FRACTURES HAVE ONLY A THIN SMECTITE(?)
COATING, CLAY FROM SOME VEINS ARE IN A SEPARATE
VIAL, MASSIVE;
Alteration : FRESH
VERY;
Comments : GREY;
Vesicles : Size(mm): 0.3 Percent: <5
Location: Filling: SMECTITE
Shape : ROUND
SMALL ROUND MAY BE SMECTITE-FILLED BELOW PCE 4;
Phenocrysts: PLAGIOCLASE ( <5%)
Size(mm): <5
CLINOPYROXENE
Size(mm): <<1
RARE GREEN TRANSLUSCENT CPX PHENOS;
Replacement: CLAY
SMECTITE
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Morrison, M. Ann
Hole: 482B Sample Midpoint (m) : 214.00
Core: 22 Top of Core Depth (m) : 211.00
Sect: 2 Top of Section Depth(m): 212.50
LITHOLOGY: PLAG-CPX-OL MOD PHYRIC BASALT;
Piece No. : PCES 1 (2-10), 2 (11-15), 3 (18-27), 4 (28-27),
5 (40-50), 6 (51-61), 7A (64-74), 7B (74-76),
8 (78-84), 9 (85-90), 10 (92-100), 11 (101-107),
12 (109-114), 13 (117-128), 14 (130-136),
15 (138-142);
Texture : FINE TO MEDIUM GRAINED, PHYRIC;
Structure : CLAY COATING ON VEINS ESPECIALLY IN PCES(3,6,7,13)
1-2MM WIDE, HARILINE FRACURES SOME WITH CLAY
COATING AND CLAYS HAVE POSSIBLE SLICKENSIDES;
Alteration : FRESH
OL SLIGHTLY ALTERED, CLAYS ARE GREEN SMECTITES
SOME WITH OXIDIZED AREAS(?);
Comments : GREY, COMBINATION OF UNIT IN 22-1;
Vesicles : Size(mm): Percent: 0
NONE OBVIOUS;
Phenocrysts: PLAGIOCLASE ( <5%)
Size(mm): <5
SLIGHTLY MORE IN UPPER PART SECTION;
( <1%)
VERY RARE;
OLIVINE ( <1%)
SMALL GREEN PATCHES COULD BE MICROPHENOS;
Replacement: SMECTITE
GREEN SMECTITES SOME WITH OXIDIZED AREAS WITH
BROWN SMECTITES;
Leg : 65 Top/Bottom Interval(mm): 0/1500 Analyst: Morrison, M. Ann
Hole: 482B Sample Midpoint (m) : 215.50
Core: 22 Top of Core Depth (m) : 211.00
Sect: 3 Top of Section Depth(m): 214.00
LITHOLOGY: PLAG-PYX-OL MOD PHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (2-6), 2 (8-12), 3 (15-20), 4 (22-30),
5 (31-36), 6 (37-44), 7 (46-5), 8 (60-67),
9 (67-78), 10 (80-83), 11 (85-92), 12 (94-107),
13 (110-115), 14 (119-125), 15 (127-135),
16 (137-146);
Texture : PHYRIC, PYX & PLAG SOME IN GLOMEROPHYRIC CLUSTERS;
Structure : THIN SMECTITE COATED VEINS(NOT AS MANY AS 22-2),
MASSIVE;
Alteration : FRESH;
Comments : GREY, CONTINUATION OF UNIT 22-2 BUT RICHER IN GREEN
PYX & SMALL OL;
Phenocrysts: PLAGIOCLASE ( 5-10%)
PYROXENE ( 1-2%)
Size(mm): TO 2
OLIVINE
SMALL;
Replacement: SMECTITE
Leg : 65 Top/Bottom Interval(mm): 0/1150 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 216.65
Core: 22 Top of Core Depth (m) : 211.00
Sect: 4 Top of Section Depth(m): 215.50
LITHOLOGY: PLAG-OL-CPX MOD PHYRIC BASALT;
Piece No. : PCES 1 (1-13), 2 (16-25), 3 (28-39),4 (40-46),
5A (49-63), 5B (64-69), 6 (71-85), 7 (86-97),
8 (98-107), 9 (110-115);
Texture : PHYRIC, CPX IN GLOMEROPHYRIC CLOTS WITH PLAG IN PCES
1-6, GROUNDMASS GETS COARSER & SEEMS TO CONTINUE DOW
IN SECTION EXCEPT FOR PCE 9-FINER GRAINED;
Structure : PCE 9 SHOWS FRACTURE SURFACE GENERALLY COATED WITH
GREEN SMECTITE, SULFIDE/AMORPHOUS SILICA, CALCITE;
Alteration : FRESH
PCE 9 IS ALTERED;
Comments : LITHOLOGY CONTINUOUS INCREASINGLY PHYRIC WITHOUT ANY
DEFINITE LITHOLOGIC BREAK OR COOLING MARGIN;
Phenocrysts: COMBINATION ( 5-10%)
Size(mm): 1-2
( ATHS%)
Size(mm): IN PCES 1-
( WITH%)
Size(mm): CPX, PLAG
OLIVINE ( 1-3 %)
Size(mm): <1
APPEARS APPARENTLY IN LOCALIZED PATCHES AS
MICROPHENOS IN PCE 1-6;
CLINOPYROXENE
GLOMEROPHYRIC CLOTS WITH PLAG;
Replacement: SMECTITE
SULFIDE
SILICA
AMORPHOUS;
CALCITE
Leg : 65 Top/Bottom Interval(mm): 0/ 300 Analyst:
Hole: 482B Sample Midpoint (m) : 220.30
Core: 23 Top of Core Depth (m) : 220.00
Sect: 1 Top of Section Depth(m): 220.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (3-6), 2 (12-17), 3 (23-30);
Texture : APHYRIC, SMALL GLOMEROPHYRIC CLUSTERS (1MM) WITH
PLAG & PYX VISIBLE, FINER-GRAINED THAN 22-4;
Structure : HAIRLINE FRACTURES WITH SMECTITE COATINGS;
Alteration : FRESH;
Comments : GREY;
Phenocrysts: PLAGIOCLASE ( <1%)
Size(mm): 2
RARE PLAG PHENOS IN PCE 2;
Leg : 65 Top/Bottom Interval(mm): 0/ 250 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 224.75
Core: 24 Top of Core Depth (m) : 224.50
Sect: 1 Top of Section Depth(m): 224.50
LITHOLOGY: SEDIMENT;
Piece No. : PCE 1 (1-24);
Leg : 65 Top/Bottom Interval(mm): 250/1400 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 225.90
Core: 24 Top of Core Depth (m) : 224.50
Sect: 1 Top of Section Depth(m): 224.75
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 2 (25-29), 3A (30-49), 3B (47-59), 4 (60-64),
5A (76-97), 5B (97-103), 6 (105-118), 7 (120-135);
Texture : PCE 2 IS FINE GRAINED, GLASSY(?), PCES 2-7 ARE
PHYRIC, ACICULAR PLAG IN GROUNDMASS;
Structure : FRACTURE SURFACES COATED WITH SMECTITE & CALCITE,
SOME UNFILLED HAIRLINE CRACKS, MASSIVE;
Alteration : FRESH;
Comments : PCE 2 COULD BE TOP OF NEW COOLING UNIT;
Vesicles : Size(mm): Percent: <.5
Location: 1-5 Filling: SMECTITE
AMYGDULES FILLED WITH GREEN SMECTITE WITH INCREASE
IN CONCENTRATION DOWNCORE;
Groundmass : PLAGIOCLASE
ACICULAR;
Replacement: SMECTITE
CALCITE
Leg : 65 Top/Bottom Interval(mm): 0/1450 Analyst: Flower, M.
Hole: 482B Sample Midpoint (m) : 227.45
Core: 24 Top of Core Depth (m) : 224.50
Sect: 2 Top of Section Depth(m): 226.00
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (1-50), 2 (32-37), 3 (42-48), 4 (51-55),
5A (57-64), 5B (56-67), 6 (69-75), 7 (76-81),
8 (82-87), 9 (88-95), 10 (98-102), 11A (104-116),
11B (115-124), 11C (123-129), 12 (130-137),
13 (140-145);
Texture : APHYRIC, PCE 1 ODD FRAGMENTS COATED BY SMECTITE;
Structure : MASSIVE;
Alteration : FRESH;
Comments : LITHOLOGY CONTINUED FROM PREVIOUS CORE SECTION, DARK
GREY;
Vesicles : Size(mm): TO 5 Percent:
Location: Filling: SMECTITE,CALCITE
SPORADIC LARGE VESICLES WITH PCE 10 & 13 LINED
WITH SMECTITE AND PCE 9 CALCITE;
Replacement: SMECTITE
CALCITE
Leg : 65 Top/Bottom Interval(mm): 0/1300 Analyst:
Hole: 482B Sample Midpoint (m) : 228.80
Core: 24 Top of Core Depth (m) : 224.50
Sect: 3 Top of Section Depth(m): 227.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE;
Piece No. : PCES 1 (3-13), 2 (15-16), 3A (28-41), 3B (40-45),
4 (47-60), 5 (60-75), 6 (76-90), 7 (93-107),
8 (107-120), 9A (121-127), 9B (124-130);
Texture : APHYRIC, FINE GRAINED;
Structure : SMECTITE VEINS 2MM WIDE IN PCES 9A, MASSIVE;
Alteration : FRESH
THIN 1MM ALTERATION HALO IN PCE 9A;
Comments : GREY, SIMILAR IN APPEARANCE TO 24-1 & 24-2;
Vesicles : Size(mm): Percent: 1-2
Location: Filling: SMECTITE
PCES(1,5,7,8) HAVE O.6MM VESICLES;
Replacement: SMECTITE
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