Leg : 64 Top/Bottom Interval(mm): 0/ 550 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 170.55
Core: 14 Top of Core Depth (m) : 165.50
Sect: 4 Top of Section Depth(m): 170.00
LITHOLOGY: SEDIMENT;
Leg : 64 Top/Bottom Interval(mm): 550/ 860 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 170.86
Core: 14 Top of Core Depth (m) : 165.50
Sect: 4 Top of Section Depth(m): 170.55
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE A (55-86);
Texture : QUENCHED BASALT(NOT GLASSY),2-3MM SELVAGE OF
DEVITRIFIED(?) GLASS AT 55CM,APHYRIC,APHANITIC;
Structure : MINOR CLAY & RARE CALCITE VEINING NORMAL & PARALLEL
TO CONTACT;
Alteration : MOD
10% OF ROCK PROBABLY ALTERATION ZONES;
Comments : 2-3MM BLACK PATCHES,PCE A IS INTRUSIVE UNIT 1;
Replacement: CLAY
CALCITE ( RARE%)
Leg : 64 Top/Bottom Interval(mm): 860/ 950 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 170.95
Core: 14 Top of Core Depth (m) : 165.50
Sect: 4 Top of Section Depth(m): 170.86
LITHOLOGY: INTERCALATED SEDIMENT;
Leg : 64 Top/Bottom Interval(mm): 960/1240 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 171.24
Core: 14 Top of Core Depth (m) : 165.50
Sect: 4 Top of Section Depth(m): 170.96
LITHOLOGY: BASALT;
Piece No. : PCE B (96-124);
Texture : APHANITIC TO FINE-GRAINED,GRADATIONAL GRAINSIZE FROM
APHANITIC TO FINE-GRAINED TO APHANITIC WHICH
INDICATES CHILLING AGAINST INTERCALATED SEDIMENT;
Structure : ONE CALCITE VEIN;
Comments : PCE B IS INTRUSIVE UNIT 2;
Replacement: CALCITE
Leg : 64 Top/Bottom Interval(mm): 1250/1350 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 171.35
Core: 14 Top of Core Depth (m) : 165.50
Sect: 4 Top of Section Depth(m): 171.25
LITHOLOGY: SEDIMENT;
Leg : 64 Top/Bottom Interval(mm): 0/ 200 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 171.55
Core: 14 Top of Core Depth (m) : 165.50
Sect: CC Top of Section Depth(m): 171.45
LITHOLOGY: APHYRIC BASALT OR DOLERITE;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : MEDIUM TO COARSE-GRAINED(GRAINSIZE 1-2MM),APHYRIC;
Alteration : FELDSPAR GREEN-TINTED INDICATING ALTERATION,
DEVELOPMENT OF FIBROUS TEXTURE IN ALTERED
MINERALS;
Comments : 0-20CM BEGINNING OF INTRUSIVE UNIT 3;
Groundmass : CHLORITE
ID CHLOR UNCERTAIN;
PYROXENE
APPEAR FRESH;
Replacement: CHLORITE
Leg : 64 Top/Bottom Interval(mm): 0/ 520 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 175.52
Core: 15 Top of Core Depth (m) : 175.00
Sect: 1 Top of Section Depth(m): 175.00
LITHOLOGY: APHYRIC BASALT;
DOLERITE;
Piece No. : PCE 1A (0-10), 1B (10-16), 1C (15-21), 1D (22-25),
1E (27-30), 1F (30-36), 1G (36-44), 1H (43-50);
Texture : PCE 1A APHYRIC BASALT GRADING TO DOLERITE AT BOTTOM,
PCES 1B-1F SIMILAR TO BASAL PORTION OF PCE 1A WITH
GRAINSIZE INCREASING TO MAXIMUM OF 2-3MM IN PCE 1F,
PCES 1G-1I GRADATIONAL FROM DOLERITE TO APHANITIC
(CHILLED) BASALT WITH A SEDIMENT-BASALT CONTACT AT
PCE 1I;
Structure : PCE 1A 1-2MM LIGHT GRAY VEIN FILLED WITH CLAY(?) &
ZEOL(NO CALCITE),PCES 1B-1F MINOR VEINS COMMON BUT
NO CALCITE;
Alteration : SLIGHTLY
PCE 1A SLIGHT ALTERATION TO CLAY MINERAL;
MOD
INCREASING ALTERATION DOWNWARD;
Comments : MEDIUM-LIGHT GRAY(N5-DRY),PCES 1A-1I ARE
CONTINUATION OF INTRUSIVE UNIT 3;
Groundmass : PYROXENE
PLAGIOCLASE
Replacement: CLAY
ID CLAY UNCERTAIN;
ZEOLITE
Leg : 64 Top/Bottom Interval(mm): 520/ 640 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 175.64
Core: 15 Top of Core Depth (m) : 175.00
Sect: 1 Top of Section Depth(m): 175.52
LITHOLOGY: SEDIMENT;
Leg : 64 Top/Bottom Interval(mm): 640/1100 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 176.10
Core: 15 Top of Core Depth (m) : 175.00
Sect: 1 Top of Section Depth(m): 175.64
LITHOLOGY: APHYRIC BASALT;
APHYRIC DOLERITE;
Piece No. : PCES 1K (64-71), 1L (72-76), 1M (75-83), 1N (82-91),
1O (91-105), 1P (102-110);
Texture : APYRIC BASALT GRADING FROM APHANITIC ADJACENT TO
SEDIMENT TO DOLERITE IN CENTER(PCES 1L-1O);
Structure : VEINED(WITHOUT CALCITE);
Alteration : MOD
Comments : PCES 1K-1P MAKE UP INTRUSIVE UNIT 4;
Leg : 64 Top/Bottom Interval(mm): 1090/1180 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 176.18
Core: 15 Top of Core Depth (m) : 175.00
Sect: 1 Top of Section Depth(m): 176.09
LITHOLOGY: SEDIMENT;
Leg : 64 Top/Bottom Interval(mm): 1180/1420 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 176.42
Core: 15 Top of Core Depth (m) : 175.00
Sect: 1 Top of Section Depth(m): 176.18
LITHOLOGY: APHYRIC BASALT;
APHYRIC DOLERITE;
Piece No. : PCES 1S (118-123), 1T (123-132), 1U (131-137),
1V (137-142);
Texture : PCE 1S FINE-GRAINED APHYRIC BASALT,PCES 1T-1V
APHYRIC DOLERITE,GRAINSIZE PROGRESSIVELY INCREASES
FROM PCES 1S-1V;
Structure : VEINED(NO CALCITE);
Alteration : MOD
Comments : INTRUSIVE UNIT 5;
Groundmass : CLINOPYROXENE
Size(mm): TO 2
LATHS;
PLAGIOCLASE
LATHS;
Leg : 64 Top/Bottom Interval(mm): 0/ 250 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 176.75
Core: 15 Top of Core Depth (m) : 175.00
Sect: 2 Top of Section Depth(m): 176.50
LITHOLOGY: APHYRIC DOLERITE;
Piece No. : PCES 1A (1-5), 1B (5-12), 1C (11-17), 1D (17-24);
Texture : APHYRIC DOLERITE(PCE 1A) GRADING TO APHANITIC BASALT
(PCE 1D) AT CONTACT WITH SEDIMENT;
Structure : SEDIMENT STRINGER CUTS THRU BASALT,NUMEROUS VEINS
CUT BASALT & DOLERITE(NO CALCITE) PROBABLY ALL ZEOL-
SI-CLAY-FILLED;
Alteration : MOD
Comments : MEDIUM-LIGHT GRAY(N6),CONTINUATION OF BASE OF CORE
15-1(INTRUSIVE UNIT 5);
Replacement: ZEOLITE
SILICA
CLAY
ID REPLACEMENT MINERALS UNCERTAIN;
Leg : 64 Top/Bottom Interval(mm): 200/ 320 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 176.82
Core: 15 Top of Core Depth (m) : 175.00
Sect: 2 Top of Section Depth(m): 176.70
LITHOLOGY: INTERCALATED SEDIMENT;
Leg : 64 Top/Bottom Interval(mm): 320/ 790 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 177.29
Core: 15 Top of Core Depth (m) : 175.00
Sect: 2 Top of Section Depth(m): 176.82
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1F (32-37), 1G (37-42), 1H (41-43), 1I (44-48),
1J (48-53), 1K (54-58), 1L (58-63), 1M (65-71),
1N (72-79);
Texture : APHYRIC BASALT GRADING FROM APHANITIC IN PCES 1F TO
DOLERITIC(GRAINSIZE TO 2MM) IN PCE 1N,PCE 1N CONTACT
ZONE BETWEEN DOLERITE(UPPER) & APHANITIC QUENCHED
BASALT WHICH INTRUDES DOLERITE;
Structure : VEINS & FRACTURES LINED WITH FIBROUS ZEOL;
Alteration : MOD
Comments : MEDIUM GRAY TO MEDIUM-LIGHT GRAY(N5-N6),CONTACT ZONE
IS DARK GRAY(N4-N3),INTRUSIVE UNIT 6;
Phenocrysts: FELSIC
Size(mm): 1-2
CHILLED PORTION HAS NUMEROUS LATHS(MICROPHENOS?);
Replacement: ZEOLITE
FIBROUS;
Leg : 64 Top/Bottom Interval(mm): 720/1370 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 177.87
Core: 15 Top of Core Depth (m) : 175.00
Sect: 2 Top of Section Depth(m): 177.22
LITHOLOGY: APHYRIC BASALT GRADING TO DOLERITE;
Piece No. : PCES 1N (72-78), 1O (78-90), 1P (90-96),
1Q (96-100), 1R (101-110), 1S (110-112),
1T (112-120), 1U (120-125), 1V (125-131),
1W (131-137);
Texture : FROM APHANITIC CHILL ZONE IN PCE 1N(73-77CM) THE
APHYRIC BASALT PROGRESSIVELY COARSENS TO A DOLERITE
IN PCES 1P-1V;
Structure : ZEOL(?)-FILLED VEINS;
Alteration : MOD
ESPECIALLY NEAR VEINS;
Comments : INTRUSIVE UNIT 7;
Replacement: ZEOLITE
ID ZEOL UNCERTAIN;
Leg : 64 Top/Bottom Interval(mm): 1370/1430 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 177.93
Core: 15 Top of Core Depth (m) : 175.00
Sect: 2 Top of Section Depth(m): 177.87
LITHOLOGY: BASALT;
Piece No. : PCE 1X (137-143);
Texture : CONTACT ZONE AT 137CM,QUENCHED APHANITIC BASALT ON
UPPER PART,GRAINSIZE TO 2MM;
Alteration : MOD
Comments : INTRUSIVE UNIT 7;
Leg : 64 Top/Bottom Interval(mm): 0/1500 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 179.50
Core: 15 Top of Core Depth (m) : 175.00
Sect: 3 Top of Section Depth(m): 178.00
LITHOLOGY: DOLERITE GRADING TO GABBRO;
Piece No. : PCES 1A (0-5), 1B (6-12), 1C (12-25), 1D (25-34),
1E (34-46), 1F (7-59), 1G (60-70), 1H (70-73),
1I (74-82), 1J (82-93), 1K (95-105), 1L (108-119),
1M (119-148);
Texture : PCE 1A MEDIUM-GRAINED & TEXTURALLY DISTINCT FROM
COARSE DOLERITE AT BASE OF PREVIOUS SECTION BUT MAY
BE A CHILL ZONE OF INTRUSIVE UNIT 6(VERY SIMILAR TO
PCES 1F-1H OF CORE 15-2),PCE 1B CONTINUATION OF PCE
1A GRADING TO APHANITIC WITH CHILLED MARGIN ON ITS
LOWER SURFACE,PCES 1C-1E GRADING FROM APHANITIC
APHYRIC BASALT AT UPPER PART OF PCE 1C THROUGH
DOLERITE IN PCE 1D & BACK TO APHANITIC IN BOTTOM OF
PCE 1E(APPARENT CONTACT),PCE 1F MEDIUM-GRAINED
APHYRIC DOLERITE,PCE 1G APHYRIC GRADING FROM
APHANITIC IN THE LOWER PART,PCES 1H-1N GRAINSIZE
INCREASES THROUGH PCE 1J TO FORM A GABBROIC ROCK-
INEQUIGRANULAR;
Structure : PCES 1C-1E NARROW VEINS APPEAR TO BE ZEOL-FILLED
(NO CALCITE),PCE 14 APPEARS PERMEATED BY CLAY.MINS &
WATER,PCES 1H-1N SMALL DIKTYTAXITIC(?) CAVITIES TO
2MM CONTAIN FIBROUS CLAY.MIN & ZEOL(NO VEINING);
Alteration : EXT
PCE 1F APPEARS PERMEATED BY CLAY.MIN & WATER;
MOD
PCES 1A-1E+1G-1N,PCE 1G GREENISH-TINT INDICATES
ALTERATION(POSSIBLY BY CLAY.MIN),PCES 1H-1N GREEN-
TINTED PLAG & ALTERATION PRODUCTS ABUNDANT;
Comments : MEDIUM-GRAY(N5) PCES 1A+1C-1E,PCE 1G MEDIUM GRAY
(N6),PCES 1A+1B INTRUSIVE UNIT 6,PCES 1C-1E
INTRUSIVE UNIT 8,PCE 1F INTRUSIVE UNIT 9,PCES 1G-1M
INTRUSIVE UNIT 10;
Groundmass : CLINOPYROXENE
Size(mm): TO 3
PCE 1F;
PLAGIOCLASE
Size(mm): TO 3
ALTERED TO GREENISH COLOR IN PCES 1F+1H-1M;
PYROXENE
Size(mm): 1-3
GREEN PRISMATIC XTLS IN PCES 1H-1M;
OPAQUE MINERALS
PCES 1H-1M;
Replacement: ZEOLITE
CLAY
FIBROUS ZEOL & CLAY IN CAVITIES OF PCES 1H-1M;
Leg : 64 Top/Bottom Interval(mm): 0/ 600 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 180.10
Core: 15 Top of Core Depth (m) : 175.00
Sect: 4 Top of Section Depth(m): 179.50
LITHOLOGY: GABBRO;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : COARSE-GRAINED GABBRO;
Structure : NUMEROUS 1-2MM DIKTYTAXITIC CAVITIES CONTAINING
FIBROUS ZEOL +/- CLAY.MINS;
Alteration : MOD
PLAG APPEARS ALTERED BUT PYX LOOKS FRESH;
Comments : ENCODER INSPECTED CORE & FOUND 4 PCES IN THIS
SECTION NUMBERED 1A-1D;
Groundmass : CLINOPYROXENE
Size(mm): TO 30
PRISMATIC GREEN XTLS;
PYROXENE
SMALLER THAN CPX,LOOKS FRESH;
PLAGIOCLASE
APPEARS ALTERED;
Replacement: ZEOLITE
CLAY MINERALS
ZEOL & CLAY.MIN FIBROUS;
Leg : 64 Top/Bottom Interval(mm): 0/1500 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 186.00
Core: 16 Top of Core Depth (m) : 184.50
Sect: 1 Top of Section Depth(m): 184.50
LITHOLOGY: GABBRO GRADING TO DOLERITE TO PLAG PHYRIC BASALT;
Piece No. : PCES 1A (0-27), 1B (28-40), 1C (40-47), 1D (47-53),
1E (53-66), 1F (66-73), 1G (71-81), 1H (81-87),
1I (88-94), 1J (94-100), 1K (100-112), 1L (112-118),
1M (118-124), 1N (124-131), 1O (130-137),
1P (139-142), 1Q (145-150);
Texture : 0-37CM GABBRO SIMILAR TO CORE 15-4,37-63CM DOLERITE
TRANSITION TO MEDIUM-GRAINED BASALT,63-77CM BASALT
GRADING TO APHYRIC BASALT WITH A 2MM CHILL ZONE,
79-91CM GRADUAL CHANGE FROM CPX TO PLAG PHYRIC
BASALT,94-150CM PLAG PHYRIC BASALT;
Structure : 37-63CM VEINS FILLED WITH CALCITE OR CLAY;
Alteration : MOD
77-79CM 2CM WEATHERING OF CHILL ZONE;
Comments : 63-77CM GRAY(N5),94-150CM MEDIUM-LIGHT GRAY(N6),
0-76CM INTRUSIVE UNIT 10,76-88CM INTRUSIVE UNIT 11,
88-135CM INTRUSIVE UNIT 12,147-150CM INTRUSIVE UNIT
13;
Phenocrysts: CLINOPYROXENE
PLAGIOCLASE
74-91CM GRADATIONAL FROM CPX TO PLAG DOWNWARD,
94-150CM PLAG ONLY;
Replacement: CLAY
CALCITE
Leg : 64 Top/Bottom Interval(mm): 910/ 940 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 185.44
Core: 16 Top of Core Depth (m) : 184.50
Sect: 1 Top of Section Depth(m): 185.41
LITHOLOGY: SEDIMENT;
Leg : 64 Top/Bottom Interval(mm): 1400/1420 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 185.92
Core: 16 Top of Core Depth (m) : 184.50
Sect: 1 Top of Section Depth(m): 185.90
LITHOLOGY: INTERCALATED SEDIMENT;
Leg : 64 Top/Bottom Interval(mm): 0/1500 Analyst: Fornari, D.
Hole: 481A Sample Midpoint (m) : 187.50
Core: 16 Top of Core Depth (m) : 184.50
Sect: 2 Top of Section Depth(m): 186.00
LITHOLOGY: DOLERITE;
PLAG PHYRIC BASALT(MINOR);
Piece No. : PCES 1A (1-6), 1B (6-13), 1C (13-18), 1D (18-24),
1E (22-32), 1F (33-41), 1G (42-48), 1H (48-60),
1I (60-62), 1J (62-66), 1K (66-70), 1L (70-75),
1M (76-82), 1N (83-91), 1O (94-97), 2A (98-102),
2B (103-106), 2C (107-117), 2D (117-124),
2E (125-131), 2F (132-138), 2G (142-149);
Texture : FINE-GRAINED APHYRIC BASALT WITH GRADUAL CHANGE TO
FINE-TO-MEDIUM-GRAINED DOLERITE THROUGH REMAINDER OF
SECTION,PCES 2A+2B HAVE SMALL BITS OF INTERLAYERED
APHANITIC BASALT;
Structure : PCE 1A CHILLED BASALT VEINLET & SPLOTCH,PCE 1H HAS A
CHILLED BASALT VEIN,PCES 2A+2B HAVE SMALL BITS OF
INTERLAYERED APHANITIC BASALT WITH CALC.-FILLED VEIN
FILLING;
Alteration : MOD
Comments : MEDIUM-LIGHT GRAY(N6);
Replacement: CALCITE
Leg : 64 Top/Bottom Interval(mm): 0/ 550 Analyst: Fornari, D.
Hole: 481A Sample Midpoint (m) : 188.05
Core: 16 Top of Core Depth (m) : 184.50
Sect: 3 Top of Section Depth(m): 187.50
LITHOLOGY: APHYRIC TO PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES 1 (0-7), 2 (10-28), 3A (31-38), 3B (39-45),
3C (46-52);
Texture : APHANITIC BASALT FROM BASAL PART OF PREVIOUS
INTRUSIVE UNIT 13,PCE 1A HAS 2CM RIM OF CHILLED
BASALT VEIN,CONTACT ZONE 26-31CM,PCES 3A-3C APHYRIC
TO SPARSELY PLAG PHYRIC;
Structure : NARROW CALCITE-FILLED VEINS CUT ACROSS PCE 3B;
Alteration : MOD
PCE 1A WEATHERED;
Comments : PCES 1+2 CONTINUATION OF INTRUSIVE UNIT 13,PCES
3A-3C INTRUSIVE UNIT 14, UNIT 13 IS RED TO LT. GRAY
(N6), UNIT 14 IS RED-GRAY (N5);
Replacement: CALCITE
Leg : 64 Top/Bottom Interval(mm): 0/1500 Analyst: Fornari, D.
Hole: 481A Sample Midpoint (m) : 195.50
Core: 17 Top of Core Depth (m) : 194.00
Sect: 1 Top of Section Depth(m): 194.00
LITHOLOGY: APHYRIC BASALT;
MINOR DOLERITE;
Piece No. : PCES 1 (1-8), 2A (11-20), 2B (19-28), 2C (28-33),
2D (33-40), 2E (40-50), 2F (51-59), 2G (59-70),
2H (70-76), 2I (76-78), 2J (78-88), 2K (88-92),
2L (92-97), 2M (97-110), 2N (109-116), 2O (115-121),
2P (120-127), 2Q (127-132), 3 (136-148);
Texture : PCE 1 FINE DOLERITE,PCES 2A-2J APHANITIC FINE
DOLERITE,PCES 2K-2M APHANITIC BASALT,PCES 2N-3 FINE-
GRAINED,CHILLED CONTACTS AT 10+23+58+87+109CM
(SEPARATING 5 INTRUSIVE UNITS), SEDIMENT BLEBS;
Structure : FINE SUBPARALLEL CALCITE VEINS,FAINT TRACKS OF
CHERTIFIED SEDIMENT AT 56CM,MINOR & VERY THIN
CALCITE VEINS IN PCES 2K-2M;
Alteration : MOD
Comments : MEDIUM GRAY(N5) PCES 2A+2K-3,PCE 1 POSSIBLY PART OF
INTRUSIVE UNIT 14,PCES 2A-2F INTRUSIVE UNIT 15,PCES
2G-2J INTRUSIVE UNIT 16,PCES 2K-2M INTRUSIVE UNIT
17,PCES 2N-3 INTRUSIVE UNIT 18;
Phenocrysts: PLAGIOCLASE
LATHS IN PCES 2A+2K-3 WITH FREQUENCY INCREASING IN
PCES 2N-3 & SIZE DECREASING;
Replacement: CALCITE
PCE 2M;
Leg : 64 Top/Bottom Interval(mm): 0/ 250 Analyst: Fornari, D.
Hole: 481A Sample Midpoint (m) : 195.75
Core: 17 Top of Core Depth (m) : 194.00
Sect: 2 Top of Section Depth(m): 195.50
LITHOLOGY: DOLERITE GRADING TO BASALT;
Piece No. : PCES 1A (0-9), 1B (10-16), 1C (17-20), 1D (20-25);
Texture : FINE-GRAINED DOLERITE TO BASALT,PCE 1A SLIGHTLY
COARSER THAN OTHER PCES,POSSIBLE THAT GRAINSIZE
DECREASES TO BASE OF INTRUSIVE UNIT 18(WHICH WAS NOT
RECOVERED);
Alteration : MOD
Comments : MEDIUM GRAY(N5),CONTINUATION OF INTRUSIVE UNIT 18;
Leg : 64 Top/Bottom Interval(mm): 0/ 200 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 328.34
Core: 31 Top of Core Depth (m) : 327.00
Sect: CC Top of Section Depth(m): 328.24
LITHOLOGY: INTERCALATED SEDIMENT;
DIATOM OOZE;
Leg : 64 Top/Bottom Interval(mm): 200/ 300 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 328.44
Core: 31 Top of Core Depth (m) : 327.00
Sect: CC Top of Section Depth(m): 328.34
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : 2 ROUNDED COBBLES APHYRIC,MEDIUM-GRAINED;
Alteration : FRESH
Comments : MEDIUM-GRAY(N5);
Vesicles : Size(mm): Percent: 15
Location: Filling: ZEOL,PYR,CALCITE
Shape : IRREGULAR
VESICULAR,ZEOL IS PALE GRAY TO WHITE,ONE COBBLE
CONTAINS PYR & THE OTHER CALCITE;
Replacement: ZEOLITE
CALCITE
Leg : 64 Top/Bottom Interval(mm): 0/ 680 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 346.68
Core: 33 Top of Core Depth (m) : 346.00
Sect: 1 Top of Section Depth(m): 346.00
LITHOLOGY: SEDIMENT;
Leg : 64 Top/Bottom Interval(mm): 680/ 700 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 346.70
Core: 33 Top of Core Depth (m) : 346.00
Sect: 1 Top of Section Depth(m): 346.68
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCE 1 (68-70);
Texture : APHANITIC,SPARSELY PHYRIC,CHILLED MARGIN OF ROPY-
TEXTURED DEVITRIFIED GLASS;
Phenocrysts: PLAGIOCLASE ( RARE%)
Size(mm): 5
Leg : 64 Top/Bottom Interval(mm): 710/ 950 Analyst: Saunders, A.
Hole: 481A Sample Midpoint (m) : 346.95
Core: 33 Top of Core Depth (m) : 346.00
Sect: 1 Top of Section Depth(m): 346.71
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 2 (73-78), 3 (79-83), 4 (84-88), 5 (90-95);
Texture : PRACTICALLY APHYRIC, FINE-GRAINED TO APHANITIC,
FLOW TEXTURES VISIBLE IN BASALT ADJACENT TO CHILL
MARGINS;
Comments : 4 ROUNDED PIECES,MEDIUM GRAY (N5) TO MED. DARK GRAY
(N4);
Alteration : FRESH;
Vesicles : Size(mm): 1-5 Percent:
Location: Filling: ZEOLITE,CALCITE,
Shape : IRREGULAR,
Location: Filling: PYRITE
Shape : SPHERICAL
ROCKS ARE VESICULAR;
Leg : 64 Top/Bottom Interval(mm): 10/ 30 Analyst: Fornari, D.
Hole: 481A Sample Midpoint (m) : 366.05
Core: 36 Top of Core Depth (m) : 366.00
Sect: CC Top of Section Depth(m): 366.03
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-3);
Texture : FINE-GRAINED BASALT FRAGMENT;
Vesicles : Size(mm): <1 Percent:
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