Leg : 63 Top/Bottom Interval(mm): 50/1500 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 370.00
Core: 40 Top of Core Depth (m) : 368.50
Sect: 1 Top of Section Depth(m): 368.55
LITHOLOGY: DIABASE;
Piece No. : PCES 1A (7-40), 1B (40-51), 1C (52-70), 1D (71-91),
1E (92-113), 1F (114-135), 1G (137-142),
1H (142-149);
Texture : FINE-TO-MEDIUM-GRAINED,UNIFORM COMPOSITION &
TEXTURE,NO CHILLED MARGIN AT TOP OF CORE;
Alteration : MOD
Comments : MEDIUM GRAY (N5),GREENISH SECONDARY MINERALS;
Vesicles : Size(mm): Percent: 0
NON-VESICULAR,VOIDS FILLED WITH CALCITE
(1MM ACROSS) SCATTER AT 107-117CM;
Phenocrysts: PYROXENE
PLAGIOCLASE
Replacement: COMBINATION
Size(mm): TO 2
AGGS OF GREENISH SECONDARY MINERALS;
CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/ 850 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 370.85
Core: 40 Top of Core Depth (m) : 368.50
Sect: 2 Top of Section Depth(m): 370.00
LITHOLOGY: DIABASE;
Piece No. : PCES 1A (1-10), 1B (10-21), 1C (21-31), 1D (31-36),
1E (37-40), 1F (40-49), 1G (50-66), 1H (66-76),
1I (76-85);
Texture : FINE-TO-MEDIUM-GRAINED,COMPOSITION & TEXTURE SIMILAR
TO CORE 40-1;
Alteration : MOD
Comments : GREENISH SECONDARY MINERALS;
Vesicles : Size(mm): Percent: 0
NON-VESICULAR,VOIDS FILLED WITH CALCITE;
Phenocrysts: PYROXENE
PLAGIOCLASE
Replacement: COMBINATION
AGGS OF GREENISH SECONDARY MINERALS;
CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 373.00
Core: 41 Top of Core Depth (m) : 371.50
Sect: 1 Top of Section Depth(m): 371.50
LITHOLOGY: DIABASE;
Piece No. : PCES 1A (1-20), 1B (21-30), 1C (31-41), 1D (40-50),
1E (51-54), 1F (55-62), 1G (62-86), 1H (86-122),
1I (122-130), 1J (131-136), 1K (136-149);
Texture : FINE-TO-MEDIUM-GRAINED,PHANERITIC,FINER-GRAINED
LAYER (1.5MM THICK) AT 120-122CM;
Structure : CALCITE-FILLED PATCHES (TO 3MM) SCATTER AT
120-150CM;
Alteration : MOD
Comments : GREENISH SECONDARY MINERALS;
Vesicles : Size(mm): TO 2 Percent:
INTERVALS 37-53+120-150CM;
Phenocrysts: PYROXENE
Size(mm): TO 2
PLAGIOCLASE
Size(mm): TO 2
Replacement: COMBINATION
Size(mm): TO 2
AGGS OF GREENISH SECONDARY MINERALS;
CALCITE
Size(mm): TO 3
SCATTER AT 120-150CM;
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 374.50
Core: 41 Top of Core Depth (m) : 371.50
Sect: 2 Top of Section Depth(m): 373.00
LITHOLOGY: DIABASE;
Piece No. : PCES 1A (1-72), 1B (70-82), 1C (82-145),
1D (145-150);
Texture : SIMILAR COMPOSITION & TEXTURE TO CORE 41-1,FINE-TO-
MEDIUM-GRAINED,PHANERITIC;
Structure : CALCITE-FILLED PATCHES(TO 2MM) AT 0-10CM,CALCITE-
FILLED FRACTURE CUTS ACROSS PCE 1C(125-145CM);
Alteration : MOD
Vesicles : Size(mm): TO 1 Percent:
INTERVAL 0-10CM;
Phenocrysts: PYROXENE
Size(mm): TO 2
PLAGIOCLASE
Size(mm): TO 2
Replacement: COMBINATION
Size(mm): TO 2
AGGS OF SECONDARY MINERALS;
CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/1350 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 375.85
Core: 41 Top of Core Depth (m) : 371.50
Sect: 3 Top of Section Depth(m): 374.50
LITHOLOGY: DIABASE;
Piece No. : PCES 1A (1-10), 1B (10-11), 1C (12-27), 1D (28-106),
1E (105-115), 1F (115-118), 1G (117-119),
1H (119-132);
Texture : PHANERITIC,PCES 1A-1D+1H FINE-GRAINED,PCES 1E-1G
FINE-TO-MEDIUM-GRAINED ALL BOUNDARIES GRADATIONAL;
Alteration : MOD
Comments : GREENISH SECONDARY MINERALS;
Phenocrysts: PYROXENE
Size(mm): TO 2
PLAGIOCLASE
Size(mm): TO 2
Replacement: COMBINATION
Size(mm): TO 2
AGGS OF GREENISH SECONDARY MINERALS;
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Niem, Alan
Hole: 469 Sample Midpoint (m) : 379.50
Core: 42 Top of Core Depth (m) : 378.00
Sect: 1 Top of Section Depth(m): 378.00
LITHOLOGY: DIABASE;
Piece No. : PCES 1A (0-13), 1B (14-89), 1C (88-104),
1D (104-125), 1E (123-125), 1F (126-141),
1G (141-150);
Texture : PHANERITIC,FINE-TO-MEDIUM-GRAINED,SLIGHTLY COARSER
AGGS OF SECONDARY MINERALS CONCENTRATED IN A LAYER
AT 63-64CM;
Structure : CALCITE & PYR-FILLED FRACTURES (0.2MM THICK) AT
O-11+78-82+126-150CM;
Alteration : MOD
Phenocrysts: PYROXENE
Size(mm): TO 2
Replacement:
Size(mm): TO 2
COMBINATION
Size(mm): TO 2
AGGS OF GREENISH SECONDARY MINERALS,CONCENTRATED
LAYER AT 63-64CM;
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Niem, Alan
Hole: 469 Sample Midpoint (m) : 381.00
Core: 42 Top of Core Depth (m) : 378.00
Sect: 2 Top of Section Depth(m): 379.50
LITHOLOGY: DIABASE;
Piece No. : PCES 1A (2-24), 1B (25-32), 1C (32-38), 1D (37-105),
1E (106-149);
Texture : SIMILAR TEXTURE & COMPOSITION TO CORE 42-1,
PHANERITIC,FINE-TO-MEDIUM-GRAINED,THIN MAFIC
MINERAL-RICH LAYER(0.5CM THICK) AT 145.5-146CM & AT
50.5-51CM;
Structure : FILLED FRACTURES CUT ACROSS CORE AT 0-10CM & AT
40-71CM;
Alteration : MOD
Phenocrysts: PYROXENE
Size(mm): TO 2
PLAGIOCLASE
Size(mm): TO 2
Replacement:
Size(mm): 3
COMBINATION
Size(mm): TO 2
AGGS OF GREENISH SECONDARY MINERALS FILLS
FRACTURES;
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Niem, Alan
Hole: 469 Sample Midpoint (m) : 382.50
Core: 42 Top of Core Depth (m) : 378.00
Sect: 3 Top of Section Depth(m): 381.00
LITHOLOGY: DIABASE;
Piece No. : PCES 1A (1-15), 1B (16-101), 1C (101-125),
1D (125-145), 1E (145-150);
Texture : COMPOSITION & TEXTURE SIMILAR TO CORE 42-1,FINE-TO-
MEDIUM-GRAINED WITH SLIGHTLY COARSER GREENISH
SECONDARY MINERALS IN A LAYER AT 79-80CM;
Structure : SCATTERED VOIDS FILLED WITH CALCITE(0.3-1MM) AT
106-136CM,CALCITE-FILLED VEIN AT 149-150CM;
Alteration : MOD
Vesicles : Size(mm): Percent: 0
NON-VESICULAR BUT SCATTERED VOIDS FILLED WITH
CALCITE AT 106-136CM;
Phenocrysts: PYROXENE
PLAGIOCLASE
Replacement: CALCITE
COMBINATION
GREENISH SECONDARY MINERALS;
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 469 Sample Midpoint (m) : 384.00
Core: 42 Top of Core Depth (m) : 378.00
Sect: 4 Top of Section Depth(m): 382.50
LITHOLOGY: DIABASE;
Piece No. : PCES 1A (0-10), 1B (10-17), 1C (15-25), 1D (25-41),
1E (41-54), 1F (55-80), 1G (81-97), 1H (97-109),
1I (110-135), 1J (135-150);
Texture : FINE-TO-MEDIUM-GRAINED,PHANERITIC,SLIGHTLY DARKER
PATCH (1X1CM) AT 44-45;
Structure : MOST VOIDS FILLED WITH CALCITE;
Phenocrysts: PYROXENE
Size(mm): TO 2
PLAGIOCLASE
Size(mm): TO 2
Replacement: CALCITE
COMBINATION
Size(mm): TO 2
AGGS OF GREENISH SECONDARY MINERALS;
Leg : 63 Top/Bottom Interval(mm): 0/1200 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 385.20
Core: 42 Top of Core Depth (m) : 378.00
Sect: 5 Top of Section Depth(m): 384.00
LITHOLOGY: DIABASE;
Piece No. : PCES 1A (1-57), 1B (55-93), 1C (92-120);
Texture : FINE-TO-MEDIUM-GRAINED,PHANERITIC,FINER-GRAINED
TOWARDS THE CORE BASE;
Structure : 80-90CM SLIGHTLY FINER-GRAINED PATCHES (4CM LENGTH);
Alteration : MOD
Phenocrysts: PYROXENE
Size(mm): TO 2
PLAGIOCLASE
Size(mm): TO 2
Replacement:
XTLS SCATTER AT 80-90CM & ARE ASSOCIATED WITH
SLIGHTLY FINER-GRAINED PATCHES;
COMBINATION
AGGS OF GREENISH SECONDARY MINERALS;
Leg : 63 Top/Bottom Interval(mm): 0/ 350 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 385.85
Core: 42 Top of Core Depth (m) : 378.00
Sect: 6 Top of Section Depth(m): 385.50
LITHOLOGY: DIABASE;
Piece No. : PCE 1 (1-35);
Texture : FINE-TO-MEDIUM-GRAINED,PHANERITIC,FINER-GRAINED
TOWARDS THE CORE BASE BECOMING MICROXTLLINE;
Structure : CALCITE-FILLED VOIDS AT 28-34CM;
Alteration : MOD
Replacement: CALCITE
FILLS VOIDS AT 28-34CM;
Leg : 63 Top/Bottom Interval(mm): 0/ 650 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 390.65
Core: 43 Top of Core Depth (m) : 387.00
Sect: 3 Top of Section Depth(m): 390.00
LITHOLOGY: SEDIMENT;
Leg : 63 Top/Bottom Interval(mm): 65/ 680 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 390.68
Core: 43 Top of Core Depth (m) : 387.00
Sect: 3 Top of Section Depth(m): 390.07
LITHOLOGY: BASALT;
Piece No. : PCE NO PCE NUMBER ASSIGNED;
Texture : SOME GLASSY RINDS;
Structure : SOME FRACTURES FILLED WITH REDDISH-BROWN JASPER,
SMALL DOLOMITIC(?) FE-RICH CLAY OCCURS BETWEEN
BASALT FRAGMENTS;
Comments : OBSERVATIONS TAKEN FROM INITIAL CORE DESCRIPTION;
Leg : 63 Top/Bottom Interval(mm): 0/1450 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 397.45
Core: 44 Top of Core Depth (m) : 396.00
Sect: 1 Top of Section Depth(m): 396.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-2), 1B (3-10), 2 (11-18), 3A (19-22),
3B (22-25), 4A (26-31), 4B (31-35), 5 (35-44),
6A (45-49), 6B (50-56), 6C (57-62), 6D (63-68),
6E (68-70), 7 (70-99), 8A (101-104), 8B (105-109),
8C (111-118), 8D (120-125), 8E (126-128),
8F (129-135), 8G (136-140), 8H (141-145);
Texture : APHANITIC,SOME FRAGMENTS SHOW THE CHILLED PILLOW
STRUCTURE,ROCK.FRAGS 3A+3B ARE MICROXTLLINE CHERT,
GREENISH FRAGMENTS (GLASS?,HYALOCLASTIC) FILL
INTERSTICES BETWEEN PILLOWS (70-100CM);
Structure : CALCITE-FILLED FRACTURES IN PCES 4A-4B+7+8G-8H,
ENTIRE SECTION HIGHLY FRACTURED;
Alteration : MOD
GREENISH FRAGMENTS HIGHLY ALTERED ORIGINALLY
GLASS(?);
Comments : ROCK.FRAGS 3A+3B ARE GREYISH-RED (5R4/2);
Replacement: CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/1150 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 398.65
Core: 44 Top of Core Depth (m) : 396.00
Sect: 2 Top of Section Depth(m): 397.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (1-13), 2A (14-16), 2B (17-20), 3 (21-29),
4A (30-34), 4B (35-40), 4C (41-46), 4D (46-49),
5 (51-65), 6A (66-69), 6B (71-75), 7 (77-88),
8A (89-93), 8B (94-98), 8C (99-103), 8D (104-108),
8E (109-112);
Texture : APHANITIC,APHYRIC;
Structure : MANY BASALT FRAGMENTS HAVE ALTERED PALAG LAYER
POSSIBLY DERIVED FROM PILLOWS OR LOBES,THIN CALCITE-
FILLED VEINLETS COMMON,HIGHLY FRACTURED;
Alteration : MOD
Replacement: CALCITE
PALAGONITE
GREENISH LAYER AT EDGES OF MANY BASALT FRAGMENTS;
Leg : 63 Top/Bottom Interval(mm): 0/ 450 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 399.45
Core: 44 Top of Core Depth (m) : 396.00
Sect: 3 Top of Section Depth(m): 399.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1A (1-7), 1B (8-20), 1C (21-25), 1D (26-30),
1E (31-35), 1F (36-41), 1G (42-45);
Texture : APHYRIC,APHANITIC;
Structure : BASALT FRAGMENTS POSSIBLY PART OF PILLOWS OR LOBES,
HIGHLY FRACTURED,GREENISH EXTENSIVEY ALTERED
HYALOCLASTITE WITH CALCITE FILLING INTERSTICES OF
PCE 1B;
Alteration : MOD
Replacement: CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Leinen, M.
Hole: 469 Sample Midpoint (m) : 406.50
Core: 45 Top of Core Depth (m) : 405.00
Sect: 1 Top of Section Depth(m): 405.00
LITHOLOGY: APHYRIC BASALT;
MINOR ROCK TYPE-BAKED CALCAREOUS CLAY;
Piece No. : PCES 1A (1-7), 1B (8-10), 2A (14-17), 2B (18-25),
2C (28-32), 3 (35-46), 4A (48-50), 4B (52-56),
5A (61-67), 5B (68-70), 5C (72-76), 6 (77-83),
7A (85-94), 7B (91-95), 7C (95-98), 7D (100-102),
7E (103-109), 7F (110-112), 7G (113-119),
8A (120-121), 8B (123-127), 8C (128-133),
8D (135-139), 9A (140-143), 9B (144-150);
Texture : APHANITIC,APHYRIC,BASALTIC BRECCIA;
Structure : PCES 2+4A+5B-5C HAVE PALAG FILLING,FRACTURES COMMON
SOME FILLED WITH CALCITE & OTHERS WITH RED CHERT OR
JASPER,PCES 7A-7D CALCAREOUS CLAY;
Alteration : MOD
Comments : PCES 7A-7D REDDISH-BROWN,PCES 3+5A LIGHT GREENISH-
YELLOW PRODUCT;
Replacement: CLAY MINERALS
BAKED CALCAREOUS CLAY IN PCES 7A-7D;
CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Denham, C.
Hole: 469 Sample Midpoint (m) : 408.00
Core: 45 Top of Core Depth (m) : 405.00
Sect: 2 Top of Section Depth(m): 406.50
LITHOLOGY: BASALT;
Piece No. : PCES 1A (1-11), 1B (11-19), 1C (19-23), 1D (23-35),
1E (35-40), 1F (40-49), 2A (50-55), 2B (55-63),
3 (64-76), 4A (78-84), 4B (85-93), 4C (93-97),
4D (98-102), 4E (104-113), 4F (114-120),
4G (119-124), 4H (124-131), 4I (131-134),
5E (137-146);
Texture : APHANITIC;
Structure : VEINS FILLED WITH CALCITE & RED CHERT(JASPER?),
HIGHLY FRACTURED THROUGHOUT;
Alteration : MOD
Replacement: CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/ 450 Analyst: Denham, C.
Hole: 469 Sample Midpoint (m) : 408.45
Core: 45 Top of Core Depth (m) : 405.00
Sect: 3 Top of Section Depth(m): 408.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT(?);
Piece No. : PCES 1A (1-5), 1B (6-10), 1C (11-15), 2 (17-24),
3A (26-30), 3B (32-37), 4 (40-44);
Texture : PCE 1B REDDISH-BROWN CHERT WITH OVAL SHAPED GRAINS;
Structure : ALL PCES PART OF PILLOWS(?),HIGHLY FRACTURED WITH
DARK GREENISH MATERIAL FILLING,PCE 1B HAS CALCITE
VEINLETS;
Alteration : MOD
Replacement: CALCITE
ZEOLITE
ID UNCERTAIN,PART OF DARK GREENISH LOW TEMPERATURE
ASSEMBLAGE(?);
CLAYS
ID UNCERTAIN,PART OF DARK GREENISH LOW TEMPERATURE
ASSEMBLAGE(?);
Leg : 63 Top/Bottom Interval(mm): 0/1400 Analyst: Denham, C.
Hole: 469 Sample Midpoint (m) : 411.40
Core: 46 Top of Core Depth (m) : 410.00
Sect: 1 Top of Section Depth(m): 410.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-5), 2 (10-25), 3A (26-33), 3B (33-35),
3C (34-40), 3D (41-43), 4 (45-57), 5A (59-68),
5B (68-74), 6 (76-82), 7A (84-90), 7B (89-98),
8A (100-103), 8B (104-107), 8C (108-111),
9A (113-119), 9B (120-124), 10 (128-131),
11 (135-139);
Texture : APHANITIC,APHYRIC;
Structure : HIGHLY FRACTURED,ALTERED FRACTURES COMMON & FILLED
WITH CALCITE & RED CHERT & DARK GREEN MATERIAL (LOW
TEMPERATURE ASSEMBLAGE), PCE 6 FRESH GLASS;
Alteration : MOD
Replacement: ID DARK GREEN MATERIAL UNCERTAIN;
CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/1050 Analyst: Denham, C.
Hole: 469 Sample Midpoint (m) : 412.55
Core: 46 Top of Core Depth (m) : 410.00
Sect: 2 Top of Section Depth(m): 411.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1A (0-3), 1B (4-15), 1C (15-21), 1D (20-27),
1E (28-35), 1F (36-38), 2 (39-50), 3A (51-60),
3B (62-74), 4A (74-77), 4B (77-80), 4C (80-85),
4D (85-88), 4E (88-92), 4F (93-96), 4G (96-99),
4H (100-103);
Texture : APHYRIC,APHANITIC,PCES 1F+4D+4F FRESH GLASSY MARGIN;
Structure : PCES 3A-3B LARGE CALCITE VEIN,RED CHERT WITH CALCITE
FILLS FRACTURES IN PCE 1E;
Alteration : MOD
Replacement: CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/1400 Analyst: Leinen, M.
Hole: 469 Sample Midpoint (m) : 415.40
Core: 47 Top of Core Depth (m) : 414.00
Sect: 1 Top of Section Depth(m): 414.00
LITHOLOGY: BASALT;
Piece No. : PCES 1 (1-28), 2A (31-35), 2B (35-40), 2C (41-45),
2D (45-49), 2E (49-50), 2F (50-54), 3 (56-60),
4A (62-71), 4B (71-74), 5A (76-80), 5B (78-83),
6A (86-99), 6B (99-104), 7 (106-118), 8 (120-128),
9A (130-135), 9B (135-139);
Texture : APHANITIC,ALTERED HYALOCLASTITE IN PCE 2;
Structure : HIGHLY FRACTURED,FRACTURES FILLED WITH CALCITE ARE
COMMON;
Alteration : MOD
Replacement: CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/1350 Analyst: Denham, C.
Hole: 469 Sample Midpoint (m) : 416.85
Core: 47 Top of Core Depth (m) : 414.00
Sect: 2 Top of Section Depth(m): 415.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (0-30), 2 (30-42), 3 (44-48), 4A (50-60),
4B (60-63), 4C (64-70), 4D (70-75), 5 (77-94),
6A (95-98), 6B (99-106), 6C (107-111), 6D (112-121),
6E (121-125), 6F (125-133);
Texture : APHYRIC,APHANITIC,SOME FRAGMENTS OF PCE 1 ARE
HYALOCLASTITES;
Structure : VEINS FILLED WITH CALCITE & RED CHERT,LIGHT BROWN
VEIN IN PCE 2 (SEEMS TO BE ALTERNATING,PERHAPS A
SEDIMENT);
Alteration : MOD
Comments : PCE 1 ACTUALLY CONSISTS OF 21 TOTAL PIECES;
Replacement: CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/1000 Analyst: Leinen, M.
Hole: 469 Sample Midpoint (m) : 418.00
Core: 47 Top of Core Depth (m) : 414.00
Sect: 3 Top of Section Depth(m): 417.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT(?);
Piece No. : PCES 1A (1-21), 1B (21-25), 1C (23-28), 1D (27-30),
2 (30-60), 3A (61-65), 3B (65-70), 3C (68-74),
3D (74-78), 4 (81-99);
Texture : APHYRIC,APHANITIC,FRESH GLASS ON TOP OF PCE 2A,
BASALT FRAGMENTS ARE PROBABLY PARTS OF PILLOWS,
NO VISIBLE PHENOCRYSTS;
Structure : FRACTURES FILLED WITH CALCITE & RED CHERT,HIGHLY
FRACTURED;
Alteration : MOD
Leg : 63 Top/Bottom Interval(mm): 0/1450 Analyst: Pisciotto, K.
Hole: 469 Sample Midpoint (m) : 424.45
Core: 48 Top of Core Depth (m) : 423.00
Sect: 1 Top of Section Depth(m): 423.00
LITHOLOGY: HYALOCLASTITE;
BASALT;
Piece No. : PCES 1A (0-4), 1B (4-9), 1C (10-13), 1D (13-28),
2 (31-34), 3 (36-39), 4 (42-48), 5A (50-55),
5B (55-60), 5C (60-65), 5D (66-69), 6 (70-71),
7A (72-79), 7B (79-83), 8 (84-117), 9 (110-120),
10 (120-128), 11 (128-141);
Texture : ALTERED HYALOCLASTIC BRECCIAS CONSISTING OF DARK
GREEN BASALTIC FRAGMENTS (ORIGINALLY GLASSY & NOW A
LOW TEMPERATURE MINERAL ASSEMBLAGE),SOME FRESH GLASS
STILL PRESERVED IN PCES 4+5B+8,BASALT IS APHANITIC &
APHYRIC;
Structure : BASALT IS HIGHLY FRACTURED WITH FRACTURES AT TIMES
FILLED WITH LOW TEMPERATURE MINERALS;
Alteration : MOD
INTERVALS 40-50+60-87CM,GLASS ALTERED;
EXTENSIVELY
INTERVALS 0-40+87-141CM,GLASS ALTERED;
Comments : COLOR OF HYALOCLASTIC BRECCIAS IS GREENISH-GRAY
(5G6/1) TO GREENISH-BLACK (5G2/1);
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 426.00
Core: 48 Top of Core Depth (m) : 423.00
Sect: 2 Top of Section Depth(m): 424.50
LITHOLOGY: HYALOCLASTITE;
BASALT;
Piece No. : PCES 1 (1-6), 2 (6-15), 3 (17-22), 4 (24-30),
5 (30-36), 6 (38-64), 7 (65-88), 8 (89-92),
9 (93-100), 10 (101-108), 11 (110-117),
12 (118-128), 13 (129-144), 14 (146-150);
Texture : HYALOCLASTITE CONSISTS OF DARK GREEN BASALTIC
FRAGMENTS NOW COMPLETELY REPLACED WITH ALTERATION
PRODUCTS & HAS CIRCULAR STRUCTURES WITH RADIATING
XTL ALIGNMENT INSIDE,BASALT IS APHANITIC & APHYRIC;
Structure : BASALT HAS THIN VEINLETS OF ALTERATION MINERAL
(PCES 1+7-11+13);
Alteration : EXTENSIVELY
INTERVALS 0-70+77-88+93-100+118-150CM;
MOD
INTERVALS 70-77+88-93+100-118CM;
Replacement: UNIDENT.MINS,ALT.GLAS;
Leg : 63 Top/Bottom Interval(mm): 0/ 500 Analyst: Grechin, V.
Hole: 469 Sample Midpoint (m) : 426.50
Core: 48 Top of Core Depth (m) : 423.00
Sect: 3 Top of Section Depth(m): 426.00
LITHOLOGY: HYALOCLASTITE;
BASALT;
Piece No. : PCES 1 (1-5), 2A (6-15), 2B (15-30), 2C (31-35),
3 (36-42), 4 (43-49);
Texture : BASALTIC BRECCIA(HYALOCLASTITE) HIGHLY ALTERED &
FRAGILE CONSISTING OF DARK GREEN BASALTIC FRAGMENTS
NOW COMPLETELY ALT.GLAS,BASALT IS APHANITIC &
APHYRIC;
Structure : BASALT HAS THIN VEILETS OF ALTERATION MINERALS;
Alteration : MOD
Replacement: UNIDENT.MINS REPLACE GLASS;
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 433.50
Core: 49 Top of Core Depth (m) : 432.00
Sect: 1 Top of Section Depth(m): 432.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-4), 2 (5-13), 3 (13-17), 4A (18-19),
4B (20-22), 5A (22-27), 5B (28-40), 6A (40-42),
6B (42-49), 6C (46-54), 7 (55-80), 8A (80-87),
8B (87-93), 8C (94-99), 9 (100-120), 10 (121-127),
11A (128-142), 11B (142-149);
Texture : APHANITIC,APHYRIC,MOSTLY FRAGMENTS OF BASALTIC
PILLOWS,FRESH GLASS IN PCES 8B+9;
Structure : HIGHLY FRACTURED,FRACTURES FILLED WITH CALCITE & RED
CHERT & GREEN ALTERATION PRODUCTS;
Alteration : MOD
Replacement: UNIDENTIFIED GREEN ALTERATION PRODUCTS;
CALCITE
Vesicles : Size(mm): Percent: 0
Leg : 63 Top/Bottom Interval(mm): 0/ 200 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 433.70
Core: 49 Top of Core Depth (m) : 432.00
Sect: 2 Top of Section Depth(m): 433.50
LITHOLOGY: HYALOCLASTITE;
Piece No. : PCE 1 (1-19);
Texture : APHYRIC, APHANITIC BASALT,GLASSY BASALT FRAGMENTS
CEMENTED TOGETHER WITH ALTERATION PRODUCTS OF LOW
TEMPERATURE ASSEMBLAGE;
Structure : CALCITE-FILLED VOIDS BETWEEN FRAGMENTS COMMON;
Alteration : MOD
Vesicles : Size(mm): Percent: 0
Replacement: UNIDENT.MINS;
CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 442.50
Core: 50 Top of Core Depth (m) : 441.00
Sect: 1 Top of Section Depth(m): 441.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-5), 2A (7-12), 2B (13-15), 2C (17-19),
3A (20-27), 3B (28-34), 3C (34-40), 3D (41-44),
4 (44-55), 5 (56-62), 6 (63-76), 7 (77-101),
8 (102-125), 9 (126-143), 10 (145-149);
Texture : BASALT APHANITIC,MOST OF BASALT FRAGMENTS ARE FROM
PILLOWS,PCES 3B-3C ARE BASALT BRECCIAS,PCES 7-10
ALTERED HYALOCLASTITES WITH ANGULAR BASALT
FRAGMENTS;
Structure : PCES 7-10 HIGHLY FRACTURED;
Alteration : MOD
INTERVAL 0-86CM;
EXTENSIVELY
INTERVAL 86-150CM;
Leg : 63 Top/Bottom Interval(mm): 0/1350 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 443.85
Core: 50 Top of Core Depth (m) : 441.00
Sect: 2 Top of Section Depth(m): 442.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (0-6), 2 (7-25), 3A (26-32), 3B (33-42),
3C (43-48), 4A (49-56), 4B (56-60), 4C (61-66),
4D (66-70), 4E (70-75), 4F (75-82), 4G (82-88),
4H (86-89), 4I (90-93), 4J (93-99), 5 (102-107),
6 (111-125), 7 (126-132);
Texture : APHANITIC TO PHANERITIC,PCES 4D-4E BASALT BRECCIAS
PCES 1+2 FRESH GLASS;
Structure : CALCITE & GREEN ALTERATION PRODUCTS-FILLED VEINLETS
COMMON,HIGHLY FRACTURED;
Alteration : MOD
Replacement: UNIDENTIFIED
GREEN ALTERATION PRODUCTS;
CALCITE
Leg : 63 Top/Bottom Interval(mm): 0/1300 Analyst: Shibata, T.
Hole: 469 Sample Midpoint (m) : 451.30
Core: 51 Top of Core Depth (m) : 450.00
Sect: 1 Top of Section Depth(m): 450.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (1-19), 2 (20-29), 3 (30-40), 4 (45-48),
5 (50-54), 6A (55-64), 6B (64-69), 7 (70-90),
8 (92-102), 9 (103-109), 10 (111-129);
Texture : APHANITIC TO PHANERITIC,APHYRIC,PCES 2+3 BASALT
BRECCIAS;
Structure : MOD FRACTURED WITH FRACTURES FILLED WITH CALCITE &
GREEN ALTERATION MINERALS IN PCES 1+7;
Alteration : MOD
Replacement: UNIDENTIFIED
GREEN ALTERATION MINERALS;
CALCITE
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