Leg : 63 Top/Bottom Interval(mm): 0/ 950 Analyst: Crouch, J.
Hole: 473 Sample Midpoint (m) : 248.45
Core: 29 Top of Core Depth (m) : 247.50
Sect: 1 Top of Section Depth(m): 247.50
LITHOLOGY: BASALT;
Piece No. : PCES 1A (0-12), 1B (12-15), 1C (15-20), 2 (23-31),
3A (33-38), 3B (36-37), 3C (38-40), 3D (38-41),
4 (44-47), 6A (62-69), 6B (66-81), 6C (81-87),
6D (88-94);
Texture : CHILLED TO APHANITIC MARGIN GRADES OVER 2-3CM TO
FINE-TO-MEDIUM XTLLINE BASALT;
Structure : MASSIVE,IRREGULAR ELONGATE VOIDS 1-2CM LONG IN
PCE 1A,CALCITE VEINS(1MM-1CM THICK) PCES 6A+6C;
Alteration : EXTENSIVELY
Comments : MEDIUM GRAY(N5) TO MEDIUM DARK GRAY(N4);
Vesicles : Size(mm): 1 Percent:
Location: Filling: CLAY
SCATTERED,SOME CLAY-FILLED IN PCES 6B+6C;
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 500/ 600 Analyst: Crouch, J.
Hole: 473 Sample Midpoint (m) : 248.10
Core: 29 Top of Core Depth (m) : 247.50
Sect: 1 Top of Section Depth(m): 248.00
LITHOLOGY: SEDIMENT;
CLAYSTONE;
Piece No. : PCES 5A & 5B (50-60);
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Niem, Alan
Hole: 473 Sample Midpoint (m) : 253.50
Core: 30 Top of Core Depth (m) : 252.00
Sect: 1 Top of Section Depth(m): 252.00
LITHOLOGY: DOLERITE;
DOLERITE SILL;
Piece No. : PCES 1A (1-7), 1B (8-15), 1C (15-20), 2 (14-17),
3A (31-34), 3B (35-40), 3C (42-46), 3D (47-54),
3E (55-57), 3F (57-67), 4A (71-73), 4B (74-77),
5A (80-86), 5B (83-88), 5C (88-95), 5D (96-100),
5E (100-108), 5F (108-115), 5G (116-123),
5H (123-134), 5I (135-137), 6 (141-149);
Texture : APHYRIC,FINE-TO-MEDIUM XTLLINE;
Structure : MASSIVE,CALCITE & GREEN CLAY-CHERT-FILLED FRACTURES
THROUGHOUT;
Alteration : EXTENSIVELY
Comments : MEDIUM GRAY(N5) TO MEDIUM DARK GRAY(N4);
Vesicles : Size(mm): 1 Percent:
Location: Filling: CLAY
SCATTERED,CONCENTRATED;
Replacement: CALCITE
CLAY
GREEN CLAY-CHERT;
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Shibata, T.
Hole: 473 Sample Midpoint (m) : 255.00
Core: 30 Top of Core Depth (m) : 252.00
Sect: 2 Top of Section Depth(m): 253.50
LITHOLOGY: DOLERITE;
Piece No. : PCES 1A (1-8), 1B (8-20), 1C (20-30), 1D (30-40),
1E (40-48), 1F (48-56), 1G (56-61), 2A (62-80),
2B (80-98), 2C (98-112), 2D (112-122), 3A (124-131),
3B (130-138), 3C (139-149);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC,HOMOGENEOUS
THROUGHOUT;
Structure : MASSIVE,CALCITE &/OR MICROXTLLINE QTZ-FILLED VEINS
(0.5-1CM THICK),ORE MINS IN & ALONG CALCITE VEINS IN
PCE 1A;
Alteration : EXTENSIVELY
Comments : MEDIUM-GRAY(N5) TO MEDIUM DARK GRAY(N4),ORES IN &
ALONG CALCITE VEINS IN PCE 1A;
Replacement: CALCITE
QUARTZ
MICROXTLLINE;
Leg : 63 Top/Bottom Interval(mm): 0/1350 Analyst: Shibata, T.
Hole: 473 Sample Midpoint (m) : 256.35
Core: 30 Top of Core Depth (m) : 252.00
Sect: 3 Top of Section Depth(m): 255.00
LITHOLOGY: DOLERITE;
Piece No. : PCES 1 (1-11), 2 (13-23), 3 (26-32), 4 (36-40),
5A (41-52), 5B (54-60), 5C (54-69), 5D (70-71),
6A (73-77), 6B (77-89), 6C (89-100), 6D (102-111),
7 (113-125), 8 (129-131);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC,HOMOGENEOUS
THROUGHOUT;
Structure : MASSIVE,CALCITE &/OR MICROXTLLINE QTZ-FILLED VEINS
(0.5-1CM THICK);
Alteration : EXTENSIVELY
Replacement: CALCITE
QUARTZ
MICROXTLLINE;
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Shibata, T.
Hole: 473 Sample Midpoint (m) : 258.50
Core: 31 Top of Core Depth (m) : 257.00
Sect: 1 Top of Section Depth(m): 257.00
LITHOLOGY: DOLERITE;
Piece No. : PCES 1A (0-6), 1B (5-15), 1C (14-30), 1D (30-39),
2A (41-45), 2B (45-62), 2C (61-84), 2D (84-93),
2E (93-116), 2F (115-124), 2G (123-135),
2H (135-142), 2I (142-147);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC,QUITE HOMOGENEOUS
THROUGHOUT;
Structure : MASSIVE,CALCITE &/OR CLAY-FILLED VEINS(0.5-1CM
THICK);
Alteration : EXTENSIVELY
Comments : MEDIUM GRAY(N5) TO MEDIUM DARK GRAY(N4);
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 0/1250 Analyst: Shibata, T.
Hole: 473 Sample Midpoint (m) : 259.75
Core: 31 Top of Core Depth (m) : 257.00
Sect: 2 Top of Section Depth(m): 258.50
LITHOLOGY: DOLERITE;
Piece No. : PCES 1A (1-13), 1B (12-22), 1C (23-28), 2 (30-32),
3 (35-42), 4 (45-50), 5 (52-59), 6D (62-70),
7 (73-78), 8 (81-86), 9A (88-98), 9B (98-105),
9C (105-117), 9D (118-125);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC,QUITE HOMOGENEOUS
THROUGHOUT;
Structure : MASSIVE,CALCITE &/OR CLAY-FILLED VEINS(0.5-1CM
THICK);
Alteration : MOD TO EXTENSIVELY
Comments : MEDIUM GRAY(N5) TO MEDIUM DARK GRAY(N4);
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Leinen, M.
Hole: 473 Sample Midpoint (m) : 267.50
Core: 32 Top of Core Depth (m) : 266.00
Sect: 1 Top of Section Depth(m): 266.00
LITHOLOGY: DOLERITE;
Piece No. : PCES 1 (0-3), 2A (5-30), 2B (28-55), 2C (52-63),
2D (62-69), 2E (70-85), 2F (85-95), 2G (95-106),
2H (106-115), 2I (115-121), 2J (121-130),
2K (130-139), 2L (139-147);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC,QUITE HOMOGENEOUS
THROUGHOUT;
Structure : MASSIVE,CALCITE &/OR CLAY-FILLED VEINS(0.2-1.5CM
THICK);
Alteration : MOD TO EXTENSIVELY
PCES 2K+2L ARE SO BADLY ALTERED THAT THEY ARE
BROKEN IN SEVERAL SMALL PCES,
PCES 1-2D ARE EXTENSIVELY ALTERED;
Comments : MEDIUM GRAY(N5) TO MEDIUM DARK GRAY(N4);
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst: Leinen, M.
Hole: 473 Sample Midpoint (m) : 269.00
Core: 32 Top of Core Depth (m) : 266.00
Sect: 2 Top of Section Depth(m): 267.50
LITHOLOGY: DOLERITE;
Piece No. : PCES 1A (0-14), 1B (14-20), 2 (22-35), 3A (37-50),
3B (50-58), 4 (60-66), 5A (68-79), 5B (79-85),
5C (85-90), 5D (87-98), 5E (95-98), 5F (98-103),
5G (103-106), 5H (103-106), 5I (106-117),
5J (117-130), 5K (130-135), 5L (135-146);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC,QUITE HOMOGENEOUS
BETWEEN 0-70CM;
Structure : MASSIVE,CALCITE &/OR CLAY-FILLED VEINS(0.2-1CM
THICK);
Alteration : EXTENSIVELY
ALTERATION VEINS CAUSED MOST OF PCES TO FALL APART
IN SMALLER FRAGMENTS;
Comments : MEDIUM GRAY(N5) TO DARK GRAY(N4);
Vesicles :
Location: Filling: CLAY
SIZE INCREASES DOWNWARDS IN CORE(70-140CM);
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 0/1400 Analyst: Leinen, M.
Hole: 473 Sample Midpoint (m) : 270.40
Core: 32 Top of Core Depth (m) : 266.00
Sect: 3 Top of Section Depth(m): 269.00
LITHOLOGY: DOLERITE;
Piece No. : PCES 1A (0-10), 1B (10-20), 1C (20-38), 1D (39-41),
1E (41-50), 1F (50-66), 1G (65-77), 1H (77-90),
1I (90-106), 1J (105-115), 1K (116-122),
1L (122-140);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC,50-140CM QUITE
HOMOGENOUS;
Structure : MASSIVE,CALCITE &/OR CLAY-FILLED VEINS(0.1-1CM
THICK);
Alteration : EXTENSIVELY
SIZE OF ALTERATION CLAY DECREASES FROM THE TOP TO
ABOUT 50CM;
MOD
PCE 1H;
Comments : MEDIUM GRAY(N5) TO DARK GRAY(N4);
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 0/1200 Analyst: Leinen, M.
Hole: 473 Sample Midpoint (m) : 271.70
Core: 32 Top of Core Depth (m) : 266.00
Sect: 4 Top of Section Depth(m): 270.50
LITHOLOGY: DOLERITE;
Piece No. : PCES 1A (0-15), 1B (15-28), 1C (28-45), 1D (45-53),
1E (53-60), 1F (61-74), 1G (74-80), 1H (80-88),
1I (88-96), 1J (96-102), 1K (102-107), 2 (110-119);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC,QUITE HOMOGENEOUS
EXCEPT AT 68-70CM;
Structure : MASSIVE,CALCITE &/OR CLAY-FILLED VEINS(0.1-1CM
THICK);
Alteration : EXTENSIVELY
CLAY ALTERATION IS MORE PROMINENT;
Comments : MEDIUM GRAY(N5) TO DARK GRAY(N4);
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 0/1300 Analyst:
Hole: 473 Sample Midpoint (m) : 276.30
Core: 33 Top of Core Depth (m) : 275.00
Sect: 1 Top of Section Depth(m): 275.00
LITHOLOGY: DOLERITE;
Piece No. : PCES 1 (0-18), 2A (21-34), 2B (35-39), 2C (39-56),
2D (56-90), 2E (90-100), 2F (100-121), 2G (121-130);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC,QUITE HOMOGENEOUS
THROUGHOUT;
Structure : MASSIVE,CALCITE &/OR CLAY-FILLED VEINS(0.1-0.5CM
THICK);
Alteration : EXTENSIVELY
Comments : MEDIUM-TO-DARK-GRAY(N5-N4);
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 0/1450 Analyst:
Hole: 473 Sample Midpoint (m) : 277.95
Core: 33 Top of Core Depth (m) : 275.00
Sect: 2 Top of Section Depth(m): 276.50
LITHOLOGY: DOLERITE;
Piece No. : PCES 1A (0-63), 1B (62-74), 1C (74-80), 1D (81-90),
1E (90-125), 1F (125-145);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC,QUITE HOMOGENEOUS
THROUGHOUT;
Structure : MASSIVE,VERY FEW CALCITE &/OR CLAY-FILLED VEINS(0.1-
1CM THICK);
Alteration : EXTENSIVELY
Comments : MEDIUM-TO-DARK-GRAY(N5-N4);
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 0/1050 Analyst:
Hole: 473 Sample Midpoint (m) : 279.05
Core: 33 Top of Core Depth (m) : 275.00
Sect: 3 Top of Section Depth(m): 278.00
LITHOLOGY: DOLERITE;
Piece No. : PCES 1A (0-7), 1B (7-11), 1C (12-30), 1D (32-53),
1E (51-60), 1F (65-78), 1G (79-90), 1H (90-102);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC;
Structure : SOMEWHAT MORE MASSIVE THAN EARLIER CORES,ONLY ONE
CALCITE &/OR CLAY-FILLED VEIN(0.5CM THICK);
Alteration : EXTENSIVELY
CORE LESS ALTERED THAN PRECEDING CORES;
Comments : MEDIUM TO DARK GRAY(N5-N4);
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 473 Sample Midpoint (m) : 285.50
Core: 34 Top of Core Depth (m) : 284.00
Sect: 1 Top of Section Depth(m): 284.00
LITHOLOGY: DOLERITE;
Piece No. : PCES 1A (1-33), 1B (33-60), 1C (60-78), 1D (77-121),
1E (133-150);
Texture : FINE-TO-MEDIUM-GRAINED,APHYRIC,QUITE HOMOGENEOUS
THROUGHOUT;
Structure : CALCITE &/OR CLAY-FILLED VEINS,MASSIVE;
Alteration : MODERATELY
Comments : MEDIUM TO DARK GRAY(N5-N4);
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 0/1400 Analyst: Shibata, T.
Hole: 473 Sample Midpoint (m) : 286.90
Core: 34 Top of Core Depth (m) : 284.00
Sect: 2 Top of Section Depth(m): 285.50
LITHOLOGY: DOLERITE;
Piece No. : PCES 1A (0-13), 1B (13-27), 1C (27-45), 1D (43-52),
1E (50-60), 1F (59-68), 1G (67-80), 1H (80-140);
Texture : FINE-GRAINED,APHYRIC,GRAINSIZE GRADUALLY DECREASES
TOWARDS THE BOTTOM;
Structure : CALCITE &/OR CLAY-FILLED VEINS,MASSIVE;
Alteration : MODERATELY
Replacement: CALCITE
CLAY
Leg : 63 Top/Bottom Interval(mm): 0/ 250 Analyst: Shibata, T.
Hole: 473 Sample Midpoint (m) : 287.25
Core: 34 Top of Core Depth (m) : 284.00
Sect: 3 Top of Section Depth(m): 287.00
LITHOLOGY: DOLERITE;
Piece No. : PCES 1A (1-10), 1B (10-23);
Texture : FINE-GRAINED,APHYRIC;
Structure : MASSIVE;
Alteration : MOD
Comments : MEDIUM-TO-MEDIUM-DARK GRAY(N5-N4);
Leg : 63 Top/Bottom Interval(mm): 250/ 350 Analyst: Shibata, T.
Hole: 473 Sample Midpoint (m) : 287.35
Core: 34 Top of Core Depth (m) : 284.00
Sect: 3 Top of Section Depth(m): 287.25
LITHOLOGY: BASALT;
Piece No. : PCES 2 (25-35);
Structure : MASSIVE;
Alteration : MOD
Comments : MEDIUM-DARK GRAY(N4);
Vesicles : Size(mm): <1 Percent:
Location: Filling: CLAY
Phenocrysts: PLAGIOCLASE
Size(mm): 1
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