Leg : 64 Top/Bottom Interval(mm): 0/1500 Analyst: Saunders, A.
Hole: 477A Sample Midpoint (m) : 34.00
Core: 1 Top of Core Depth (m) : 32.50
Sect: 1 Top of Section Depth(m): 32.50
LITHOLOGY: BASALT GRADING TO DOLERITE;
Piece No. : PCES 1 (4-8), 2 (10-15), 3 (18-22), 4 (24-28),
5 (30-39), 6 (40-45), 7 (47-59), 8 (60-66),
9 (68-74), 10 (76-82), 11 (85-100), 12A (102-107),
12B (102-107), 13A (109-117), 13B (109-117),
14A (120-127), 14B (120-127), 15 (129-131),
16A (133-139), 16B (133-139), 17 (140-148);
Texture : FINE-GRAINED WITH AN APPARENT GRADATION FROM CHILLED
TO DOLERITIC,GLASSY SELVAGE(TO 6MM THICK) OCCURS IN
PCES 1+4 WHICH HAS A DISTINCT ROPY TEXTURE,PHYRIC;
Structure : VEINING PARALLEL TO CORE OCCURS IN SEVERAL PCES WITH
ZEOL FILLING(NO CALCITE PRESENT),ZEOL & DOLO LINE
CAVITIES BENEATH GLASS RINDS;
Alteration : FRESH
GLASS VERY FRESH,2CM-WIDE ALTERATION ZONE SURROUND
VEINS,VERY FAINT YELLOWISH-STAINING OF GNDMASS
INDICATES PRESENCE OF MINOR SMEC;
Comments : DARK TO MEDIUM GRAY(N5-N6 DRY,N2-N3 WET),BAKED RED
SEDIMENT FOUND ATTACHED TO THE GLASS ON PCES 1+4;
Phenocrysts: PLAGIOCLASE ( 10%)
Size(mm): 0.5-5
LATH-SHAPED TO TABULATE;
FELDSPAR
Replacement: SMECTITE
ZEOLITE
DOLOMITE
Leg : 64 Top/Bottom Interval(mm): 0/ 400 Analyst: Fornari, D.
Hole: 477A Sample Midpoint (m) : 34.40
Core: 1 Top of Core Depth (m) : 32.50
Sect: 2 Top of Section Depth(m): 34.00
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCES 1 (0-3), 2 (5-10), 3 (12-24), 4 (26-40);
Texture : PHYRIC;
Alteration : FRESH
EXCEPT FOR AREA PROXIMAL TO VEINS THAT ARE XTLS OF
ZEOL & CLAY.MIN;
Comments : MEDIUM-LIGHT GRAY,PCE 4 MARKS END OF CORE 1;
Phenocrysts: PLAGIOCLASE
Size(mm): 1-4
Leg : 64 Top/Bottom Interval(mm): 0/ 150 Analyst: Fornari, D.
Hole: 477A Sample Midpoint (m) : 42.15
Core: 2 Top of Core Depth (m) : 42.00
Sect: 1 Top of Section Depth(m): 42.00
LITHOLOGY: BASALT;
Piece No. : PCES 1 (1-4), 2 (6-9), 3 (10-15);
Texture : APHANITIC,GLASS SELVAGE ON PCE 3;
Alteration : FRESH
Comments : MEDIUM DARK GRAY(N4);
Vesicles : Size(mm): Percent: 0
Phenocrysts: PLAGIOCLASE ( 15%)
Size(mm): TO 10
PHENOS ALSO PRESENT IN GLASS;
OLIVINE
OCCASIONAL MICROPHENOS;
Leg : 64 Top/Bottom Interval(mm): 150/1350 Analyst: Fornari, D.
Hole: 477A Sample Midpoint (m) : 43.35
Core: 2 Top of Core Depth (m) : 42.00
Sect: 1 Top of Section Depth(m): 42.15
LITHOLOGY: DOLERITE;
Piece No. : PCES 4 (17-20), 5 (21-29), 6A (30-40), 6B (39-48),
7A (50-56), 7B (54-57), 7C (58-60), 8 (62-65),
9 (67-69), 10 (70-71), 11 (72-74), 12 (75-85),
13 (87-96), 14 (98-105), 15 (106-108), 16 (111-125),
17 (125-131), 18 (133-135);
Texture : MEDIUM-GRAINED DOLERITE,INEQUIGRANULAR ALMOST
PORPHYRITIC GNDMASS;
Structure : MINUTE DIKTYTAXITIC CAVITIES;
Alteration : FRESH
NO RECOGNIZABLE ALTERATION;
Comments : MEDIUM-LIGHT GRAY(N5-N6);
Vesicles : Size(mm): Percent: 0
Phenocrysts: PLAGIOCLASE
Size(mm): 0.2-0.8
PCES 4-9,FEWER XTLS IN PCES 10-18;
Groundmass : OLIVINE
OCCASIONAL;
PLAGIOCLASE
CLINOPYROXENE
Size(mm): TO 5
SOME LARGE LATHS;
Leg : 64 Top/Bottom Interval(mm): 0/1450 Analyst: Fornari, D.
Hole: 477A Sample Midpoint (m) : 44.95
Core: 2 Top of Core Depth (m) : 42.00
Sect: 2 Top of Section Depth(m): 43.50
LITHOLOGY: COARSE BASALT OR DOLERITE;
Piece No. : PCES 1 (0-20), 2 (21-25), 3 (26-30), 4 (32-34),
5 (36-43), 6 (45-50), 7 (51-55), 8 (56-58),
9 (60-62), 10 (63-68), 11 (70-72), 12 (73-77),
13 (78-84), 14 (85-88), 15 (90-98), 16 (99-103),
17 (105-109), 18 (110-114), 19A (115-121),
19B (120-130), 20 (130-133), 21 (134-136),
22 (138-141);
Texture : PCE 1 MEDIUM-GRAINED INEQUIGRANULAR & SIMILAR TO
PCES 10-18 OF CORE 2-1,PCES 2-22 VERY SIMILAR TO PCE
1 EXCEPT FINER-GRAINED;
Alteration : FRESH
NO DISCERNABLE ALTERATION;
Comments : MEDIUM-LIGHT GRAY(N5-N6);
Vesicles : Size(mm): Percent: 0
PCE 1;
Size(mm): 0.5-3 Percent: 5
Location: Filling: ZEOL
Shape : SPHERAL
UNFILLED EXCEPT FOR OCCASIONAL CLUSTER OF WHITE
ACICULAR XTLS(ZEOL) IN PCES 2-17;
Size(mm): TO 5 Percent: 15
Location: Filling: CLAY.MIN
Shape : SPHERAL
PCES 18-22,IRREGULAR,UNFILLED EXCEPT FOR
OCCASIONAL CLUSTERS OF WHITE ACICULAR XTLS & VERY
THIN LINING OF CLAY.MIN;
Phenocrysts: PLAGIOCLASE ( 5-10%)
PCES 1-17;
PLAGIOCLASE ( 15%)
PCES 18-22;
Replacement: ZEOLITE
CLAY
Leg : 64 Top/Bottom Interval(mm): 0/1500 Analyst: Saunders, A.
Hole: 477A Sample Midpoint (m) : 46.50
Core: 2 Top of Core Depth (m) : 42.00
Sect: 3 Top of Section Depth(m): 45.00
LITHOLOGY: COARSE BASALT OR DOLERITE;
Piece No. : PCES 1 (0-3), 2A (4-8), 2B (7-14), 3 (15-18),
4 (20-26), 5 (27-35), 6 (35-44), 7 (45-50),
8 (52-54), 9 (55-65), 10 (67-76), 11 (79-85),
12 (87-93), 13A (94-97), 13B (95-96), 14 (99-102),
15 (104-108), 16 (109-111), 17 (112-119),
18 (120-125), 19 (125-135), 20A (135-139),
20B (137-140), 21 (142-150);
Texture : PCES 1-9 MEDIUM-TO-COARSE-GRAINED BASALT(DOLERITE) &
VERY SIMILAR TO PCES 18-22 OF CORE 2-2,PCES 10-21
MEDIUM-GRAINED DOLERITE,PCES 19+21 ARE DRILLING
FRAGMENTS;
Structure : NUMEROUS DIKTYTAXITIC CAVITIES(O.5-1MM) IN PCES
19+21;
Alteration : FRESH
PCES 1-10;
MOD
PCES 11-18;
EXTENSIVELY
PCES 19-21;
Comments : PCES 1-9 MEDIUM-LIGHT GRAY(N5-N6),PCES 10-21 MEDIUM
GRAY & PERMEATED WITH WATER & FRIABLE;
Vesicles : Size(mm): TO 5 Percent: 15
Location: Filling:
Shape : SPHERICAL
PCES 1-9 UNFILLED BUT A FEW CONTAIN ACICULAR XTLS
IN CLUSTERS(ZEOL?);
Size(mm): TO 10 Percent:
Location: Filling:
Shape : IRREGULAR
PCES 1-9,COALESCED;
Phenocrysts: PLAGIOCLASE ( 15%)
Size(mm): 1-4
PCES 1-9;
PLAGIOCLASE ( 5-10%)
PCES 10-21;
Groundmass : PLAGIOCLASE
PYROXENE
PCES 1-9;
OLIVINE
CLINOPYROXENE
PCES 10-21;
Replacement: ZEOLITE
ID ZEOL UNCERTAIN;
Leg : 64 Top/Bottom Interval(mm): 0/ 900 Analyst: Saunders, A.
Hole: 477A Sample Midpoint (m) : 47.40
Core: 2 Top of Core Depth (m) : 42.00
Sect: 4 Top of Section Depth(m): 46.50
LITHOLOGY: DOLERITE;
Piece No. : PCES 1 (1-10), 2 (12-20), 3 (22-33), 4 (34-39),
5 (40-47), 6 (48-54), 7 (56-62), 8 (64-71),
9 (72-81), 10 (82-90);
Texture : MEDIUM-GRAINED;
Structure : ALL PCES CONTAIN ABUNDANT SMALL(<0.5MM) DIKTYTAXITIC
CAVITIES;
Alteration : MOD
CONSTITUENT MINERALS APPEAR FRESH;
Comments : CONTINUATION OF CORE 2-3,WATER-PERMEATED;
Phenocrysts: PLAGIOCLASE ( 5-10%)
Size(mm): TO 4
Groundmass : MORE FELSPATHIC FROM PCE 5 DOWNWARD WITH BAND OF
"NORMAL" DOLERITE RUNNING ACROSS PCE 7;
Leg : 64 Top/Bottom Interval(mm): 0/1500 Analyst: Saunders, A.
Hole: 477A Sample Midpoint (m) : 56.50
Core: 3 Top of Core Depth (m) : 55.00
Sect: 1 Top of Section Depth(m): 55.00
LITHOLOGY: GABBRO OR DOLERITE;
Piece No. : PCES 1 (1-7), 2 (10-18), 3 (19-24), 4A (26-38),
4B (38-44), 5 (46-50), 6A (53-64), 6B (63-70),
7 (72-78), 8 (79-81), 9 (84-93), 10 (95-97),
11 (100-104), 12 (107-114), 13 (116-120),
14 (122-130), 15 (133-139), 16 (141-149);
Texture : COARSE-GRAINED DOLERITE OR GABBRO,INEQUIGRANULAR,
PCE 11 IS FINE-GRAINED & MORE DOLERITIC IN
APPEARANCE,SLIGHT MINERAL SEGREGATION LEADING TO
PYX-RICH AREAS IN PCE 2;
Structure : PCES 6-9 DIKTYTAXITIC CAVITIES,ENTIRE SECTION HAS
NUMEROUS MINUTE DIKTYTAXITIC CAVITIES;
Alteration : FRESH
Comments : GRAYISH-BLACK(N2) WHEN WET & MEDIUM-TO-MEDIUM-DARK
GRAY(N4-N5) WHEN DRY;
Vesicles : Size(mm): 1 Percent: <5
PCES 1+10-11;
Location: Filling:
Shape : IRREGULAR
VESICLES & DIKTYTAXITIC CAVITIES IN PCES 6-9;
Groundmass : PLAGIOCLASE ( 50%)
Size(mm): 1-4
PYROXENE ( 40%)
APPEARS ANHEDRAL & OPHITICALLY ENCLOSES PLAG;
OLIVINE
ALL MINERALS VERY FRESH;
Leg : 64 Top/Bottom Interval(mm): 0/1500 Analyst: Saunders, A.
Hole: 477A Sample Midpoint (m) : 58.00
Core: 3 Top of Core Depth (m) : 55.00
Sect: 2 Top of Section Depth(m): 56.50
LITHOLOGY: GABBRO OR COARSE DOLERITE;
Piece No. : PCES 1A (0-8), 1B (8-14), 2A (15-31), 2B (30-36),
3 (38-45), 4 (47-50), 5A (51-60), 5B (59-63),
5C (63-68), 6 (70-74), 7 (75-78), 8 (81-84),
9 (85-93), 10 (95-100), 11 (100-104), 12 (106-114),
13 (115-119), 14 (120-127), 15 (129-134),
16A (136-145), 16B (145-150);
Texture : INEQUIGRANULAR COARSE DOLERITE OR GABBRO,SIMILAR TO
CORE 3-1;
Structure : MINUTE DIKTYTAXITIC CAVITIES THROUGHOUT;
Alteration : FRESH
Comments : CONTINUATION OF CORE 3-1(PCE 1 CONNECTED TO PCE 16
OF CORE 3-1),GRAYISH-BLACK(N2) WHEN WET & MEDIUM-TO-
MEDIUM-DARK GRAY(N4-N5) WHEN DRY;
Groundmass : PLAGIOCLASE (35-40%)
PLAG LARGER THAN CPX & ENCLOSED BY CPX;
PYROXENE ( 40%)
OLIVINE ( 15%)
Size(mm): <1
FORM SMALL GREEN XTLS;
Leg : 64 Top/Bottom Interval(mm): 0/1500 Analyst: Saunders, A.
Hole: 477A Sample Midpoint (m) : 59.50
Core: 3 Top of Core Depth (m) : 55.00
Sect: 3 Top of Section Depth(m): 58.00
LITHOLOGY: OL GABBRO OR COARSE OL DOLERITE;
Piece No. : PCES 1 (0-5), 2 (5-12), 3 (13-21), 4 (23-26),
5 (28-34), 6 (35-43), 7 (43-50), 8 (51-54),
9 (57-64), 10 (65-70), 11 (70-85), 12 (82-90),
13 (91-101), 14 (102-108), 15 (108-115),
16 (116-128), 17 (130-135), 18 (137-142),
19 (145-150);
Texture : SIMILAR TO CORE 3-2,COARSE DOLERITE OR GABBRO,PCES
18-19 FINER-GRAINED THAN PCES 1-17 ALTHOUGH FELDSPAR
ARE A SIMILAR SIZE;
Structure : DIKTYTAXITIC CAVITIES ABUNDANT;
Alteration : FRESH
Comments : GRAYISH-BLACK(N2) WHEN WET & MEDIUM-TO-MEDIUM-DARK
GRAY(N4-N5) WHEN DRY;
Groundmass : PLAGIOCLASE
Size(mm): TO 6
OPHITICALLY ENCLOSED BY DARK CPX;
CLINOPYROXENE
DARK,ENCLOSES PLAG;
OLIVINE (TO 20%)
Size(mm): <1
PROPORTIONS OF ALL MINERALS VARY SLIGHTLY WITH OL
INCREASING IN ABUNDANCE TOWARDS CORE BASE
(ESPECIALLY PCES 13-16);
Leg : 64 Top/Bottom Interval(mm): 0/1500 Analyst: Saunders, A.
Hole: 477A Sample Midpoint (m) : 61.00
Core: 3 Top of Core Depth (m) : 55.00
Sect: 4 Top of Section Depth(m): 59.50
LITHOLOGY: PLAG PHYRIC DOLERITE;
Piece No. : PCES 1 (1-5), 2 (6-12), 3 (14-23), 4 (24-30),
5 (32-43), 6 (45-49), 7 (51-59), 8 (61-68),
9 (68-76), 10 (77-86), 11 (88-97), 12 (98-103),
13 (105-117), 14 (117-126), 15 (127-137),
16 (138-148);
Texture : PHYRIC;
Structure : PCES 2+4 CALCITE(+VE WITH HCL) & ZEOL(?) VEINS;
Alteration : FRESH
MOD
PCE 10;
Comments : DARK GRAYISH-BLACK(N2) WHEN WET & MEDIUM-DARK GRAY
(N4-N5) WHEN DRY;
Phenocrysts: PLAGIOCLASE (10-15%)
Size(mm): TO 8
DECREASING IN SIZE & ABUNDANCE TO 4MM AT BOTTOM OF
CORE;
Groundmass : PLAGIOCLASE
OLIVINE
CLINOPYROXENE
Replacement: CALCITE
ZEOLITE
ID ZEOL UNCERTAIN;
Leg : 64 Top/Bottom Interval(mm): 0/ 200 Analyst: Saunders, A.
Hole: 477A Sample Midpoint (m) : 61.20
Core: 3 Top of Core Depth (m) : 55.00
Sect: 5 Top of Section Depth(m): 61.00
LITHOLOGY: PLAG PHYRIC DOLERITE;
Piece No. : PCES 1 (0-10), 2 (12-20);
Comments : UNDISTINGUISHABLE FROM CORE 3-4;
Leg : 64 Top/Bottom Interval(mm): 0/ 170 Analyst: Fornari, D.
Hole: 477A Sample Midpoint (m) : 0.17
Core: H 1 Top of Core Depth (m) : 0.00
Sect: Top of Section Depth(m): 0.00
LITHOLOGY: PLAG PHYRIC DOLERITE;
SILICIC DOLOMITE;
Piece No. : PCES 1 (0-6), 2 (6-9), 3 (10-17);
Texture : PCE 1 DOLOMITIC FINE-GRAINED,PCES 2+3 PHYRIC;
Structure : PCES 2+3 PROBABLY BASE OF SILL SAMPLED IN CORES 1-3,
SILIC DOLOMITE IN PCE 1 INDICATES IT EXISTS AS AN
INTERCALATION AT THE BASE OF THE SILLS & ACTUAL
INTERVAL SAMPLED BY THIS MATERIAL IS PROBABLY 67-70M
SUBBOTTOM;
Alteration : MOD
TOP OF PCE 1,PCE 1 WEATHERING AURA ON BOTH VERTICA
SIDES;
FRESH
Comments : PCE 1 LIGHT OLIVE-GRAY 5Y(5/2);
Phenocrysts: PLAGIOCLASE
Size(mm): 1-3
PCES 2+3;
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