Leg : 60 Top/Bottom Interval(mm): 0/1480 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 257.98
Core: 28 Top of Core Depth (m) : 256.50
Sect: 1 Top of Section Depth(m): 256.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-8), 2 (9-16), 3 (20-22), 4 (26-28),
5 (30-35), 6 (38-41), 7 (45-50), 8 (54-56),
9 (59-66), 10 (68-75), 11 (78-85), 12 (85-95),
13 (98-104), 14 (107-114), 15 (117-123),
16 (125-133), 17 (135-140), 18 (144-148);
Texture : APHYRIC, RELICT GLASS PRESENT ON PCES 3+6+7,
SPHERULITIC APPEARANCE ON PCES 3+6+7+9+12-16,
PCE 4 IS DENSER THAN PCES 1-3, PCES 2+5-8+10+11 ARE
PEBBLES OF THIS ANDESITE;
Structure : PROBABLE PILLOWED SEQUENCE, PCES 12-16 CONSIST OF
FRAGMENTS OF A SINGLE PILLOW WITH RELICT MARGIN AT
TOP OF 12 AND BOTTOM OF 16;
Alteration : MOD
PCES 4+11;
EXT
REST OF SECTION;
Comments : PCES RANGE IN COLOR FROM LIGHT DOVE GREY TO MED GREY
TO MEDIUM DARK GREY (5Y6/1 TO N5 TO N4);
Vesicles : Size(mm): <1 Percent: 20
VESICLES COMPRISE UP TO 20% IN SOME PCES AND
ARE IRREGULARLY SHAPED;
Leg : 60 Top/Bottom Interval(mm): 0/1490 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 267.49
Core: 29 Top of Core Depth (m) : 266.00
Sect: 1 Top of Section Depth(m): 266.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-5), 2 (8-10), 3 (13-16), 4 (19-22),
5 (25-27), 6 (32-36), 7 (38-41), 8 (44-46),
9 (51-52), 10 (55-57), 11 (62-63), 12 (65-69),
13 (71-74), 14 (79-80), 15 (84-85), 16 (89-97),
17 (100-107), 18 (110-116), 19 (118-127),
20 (130-135), 21 (137-140), 22 (143-149);
Texture : APHYRIC, RELICT GLASS NOT RECOVERED IN THIS CORE
BUT SEVERAL PCES SHOW SPHERULITIC TEXTURE (PCES 1-2)
INDICATING THAT THIS IS A CONTINUATION OF THE
PREVIOUS CORE;
Structure : SPHERULITIC TEXTURES INDICATE A PILLOW SEQUENCE;
Alteration : EXT;
Comments : COLORS RANGE FROM DARK GREENISH GREY TO LIGHT OLIVE
Leg : 60 Top/Bottom Interval(mm): 0/1490 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 268.99
Core: 29 Top of Core Depth (m) : 266.00
Sect: 2 Top of Section Depth(m): 267.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-9), 2 (13-15), 3 (17-24), 4 (27-34),
5 (38-42), 6 (45-49), 7 (52-58), 8 (61-70),
9 (72-75), 10 (78-84), 11 (89-96), 12 (100-104),
13A (107-111), 13B (112-122), 14A (125-131),
14B (125-131), 15 (134-138), 16 (141-149);
Texture : APHYRIC, MORE MASSIVE AND HOLOXTLN THAN PREVIOUS
CORES, NO RELICT GLASS PRESENT;
Structure : CRACKS AND VEINS COMPRISED OF CALCITE AND SMECTITE
HAVE SIMILAR FEELING TO SLICKENSIDES;
Alteration : MOD;
Comments : COLOR RANGES FROM GREENISH GREY TO GREYISH OLIVE
(10GY5/2 TO 10Y4/2);
Vesicles : Size(mm): Percent: <10
SIMILAR VESICLES TO PREVIOUS SECTION;
Replacement: CALCITE
SMECTITE
Leg : 60 Top/Bottom Interval(mm): 0/ 790 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 269.79
Core: 29 Top of Core Depth (m) : 266.00
Sect: 3 Top of Section Depth(m): 269.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-9), 2 (12-19), 3A (22-28), 3B (30-34),
4 (37-45), 5 (48-54), 6 (58-70), 7 (72-79);
Texture : APHYRIC, HOLOXTLN;
Structure : SMEC COATINGS ON EXTERIOR SURFACES, PROBABLY PILLOW
SEQUENCE OR THIN LAVA FLOW;
Alteration : EXT;
Comments : MEDIUM BLUISH GREY COLOR;
Vesicles : Size(mm): 0.1-5 Percent: <15
PATCHES OF IRREGULARLY SHAPED VESICLES;
Replacement: SMECTITE
Leg : 60 Top/Bottom Interval(mm): 0/1470 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 276.97
Core: 30 Top of Core Depth (m) : 275.50
Sect: 1 Top of Section Depth(m): 275.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-7), 2 (10-12), 3 (17-19), 4 (22-26),
5 (30-36), 6 (38-41), 7 (45-48), 8 (51-54),
9 (56-59), 10 (62-65), 11 (68-72), 12 (74-77),
13 (81-83), 14 (86-89), 15 (91-93), 16 (96-101),
17 (103-113), 18 (116-119), 19 (122-124),
20 (127-128), 21 (131-132), 22 (135-140),
23 (144-147);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, PCES 1-6 AND 11-23
ARE HOLOXTLN, PCES 7-10 SHOW SPHERULITIC TEXTURE
WITH TRACES OF GLASSY MARGINS;
Structure : PCES 1-6+11-23 PARTIALLY ALTERED TO CLAY ALONG
FRACTURES, PCES 7-10 HAVE AMYGDULES FILLED WITH
QUARTZ OR CHALCEDONY AND CLAY, PCES 7-10 ARE
POSSIBLE PILLOW FRAGMENTS;
Alteration : EXT
PCES 6-10;
MOD
REST OF SECTION;
Comments : PCES 1-6+11-23 ARE GREYISH GREEN, PCES 7-10 ARE
OLIVE GREY (5Y4/1);
Vesicles : Size(mm): 2-5 Percent: <15
PCES 7-10, LOCALLY ARRANGED IN STREAKS;
Replacement: CHALCEDONY
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/1290 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 278.29
Core: 30 Top of Core Depth (m) : 275.50
Sect: 2 Top of Section Depth(m): 277.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-5), 2 (8-11), 3 (13-20), 4 (22-26),
5 (30-35), 6 (38-42), 7 (45-47), 8 (51-60),
9 (62-64), 10 (70-77), 11 (80-83), 12 (86-88),
13 (90-94), 14 (96-94), 15 (102-105), 16 (107-110),
17 (113-116), 18 (118-121), 19 (123-129);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, PCE 9 IS COARSE
GRAINED, PCES 12+13+16-18 HAVE FORMERLY GLASSY
MARGINS AND SPHERULITIC TEXTURES;
Structure : PCES 12+13+16-18 ARE ALTERED FRAGMENTS OF PILLOWS;
Alteration : EXT;
Comments : PCES 1-8+19 ARE MEDIUM GREY, PCE 10 IS GREYISH OLIVE
(10Y4/2), PCE 11 IS DARK GREENISH GREY, PCE 15 IS
A LIMESTONE FRAGMENT WITH TINY BASALT FRAGMENT WITH
LIMESTONE AND ON CONTACT;
Vesicles : IRREGULAR STREAKS AND PATCHES OF VESICLES;
Leg : 60 Top/Bottom Interval(mm): 0/1370 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 286.37
Core: 31 Top of Core Depth (m) : 285.00
Sect: 1 Top of Section Depth(m): 285.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-6), 2 (9-11), 3 (15-22), 4 (25-28),
5 (31-35), 6 (38-42), 7 (45-49), 8 (51-53),
9 (56-59), 10 (61-68), 11 (70-73), 12 (75-79),
13 (81-85), 14 (88-91), 15 (94-99), 16 (101-109),
17 (111-115), 18 (119-129), 19 (131-137);
Texture : APHYRIC, FINE TO MEDIUM GRAINED;
Structure : A TRANSITION BETWEEN THE UPPER PILLOWED SEQUENCE AND
TWO MORE MASSIVE FLOWS OF SIMILAR LITHOLOGY IS
BETWEEN PCES 17 AND 18, PCES 1-17 ARE FRAGMENTS OF
PILLOWS OR THIN FLOWS, PCES 1-4+11+14 HAVE AMYGDULES
FILLED WITH CHALC;
Alteration : EXT
PCES 1-4+11+14;
Leg : 60 Top/Bottom Interval(mm): 0/1480 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 295.98
Core: 32 Top of Core Depth (m) : 294.50
Sect: 1 Top of Section Depth(m): 294.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (3-7), 2A (10-19), 2B (21-25), 2C (27-31),
2D (33-36), 3A (38-43), 3B (45-52), 4 (54-57),
5A (60-66), 5B (64-75), 6 (79-83), 7 (85-87),
8 (89-94), 9 (96-101), 10 (104-108), 11 (111-114),
12 (117-122), 13 (125-131), 14 (134-137),
15 (139-142), 16 (145-148);
Texture : APHYRIC, FINE TO MEDIUM GRAINED;
Structure : CONTINUATION OF THE MASSIVE FLOW RECOVERED IN THE
LOWER PART OF CORE 31, VEINS OF CARB + GREEN SMEC +
CHLORITE (POSSIBLY), SOME EXTERIOR SURFACES COATED
WITH ALTERATION MINERALS ABOVE;
Alteration : SLIGHTLY;
Comments : COLOR GREENISH GREY (5G6/1) TO DARK GREENISH GREY
(5GY4/1);
Vesicles : Size(mm): 0.1-1 Percent:
SLIGHTLY VESICULAR;
Replacement: CARBONATE
CHLORITE
SMECTITE
Leg : 60 Top/Bottom Interval(mm): 0/1460 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 297.46
Core: 32 Top of Core Depth (m) : 294.50
Sect: 2 Top of Section Depth(m): 296.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (3-6), 2 (9-13), 3 (17-19), 4 (22-25),
5 (28-29), 6 (32-39), 7 (41-46), 8 (50-62),
9 (65-67), 10 (72-75), 11 (79-81), 12 (85-89),
13 (92-95), 14 (98-101), 15A (104-110),
15B (110-125), 16 (129-133), 17 (136-140),
18 (144-147);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, NEARLY HOLOXTLN;
Structure : VEINS OF CARB + CHLORITE OR GREEN SMEC;
Alteration : SLIGHTLY;
Comments : COLOR GREYISH GREEN (5G5/2) TO GREENISH GREY
(5G6/1);
Vesicles : Size(mm): 0.1-2 Percent:
SLIGHTLY VESICULAR, SOME MAY BE FILLED WITH
ZEOLITE;
Replacement: CARBONATE
CHLORITE
SMECTITE
ZEOLITE
Leg : 60 Top/Bottom Interval(mm): 0/1480 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 298.98
Core: 32 Top of Core Depth (m) : 294.50
Sect: 3 Top of Section Depth(m): 297.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (3-7), 2 (10-15), 3 (17-24), 4 (27-31),
5 (34-44), 6 (46-50), 7A (54-60), 7B (61-65),
8 (68-72), 9 (75-77), 10 (79-83), 11 (86-87),
12A (90-107), 12B (108-124), 13 (127-131),
14 (134-135), 15 (138-140), 16 (142-145),
17 (147-148);
Texture : SIMILAR TO PREVIOUS SECTION;
Alteration : SLIGHTLY;
Leg : 60 Top/Bottom Interval(mm): 0/ 520 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 299.52
Core: 32 Top of Core Depth (m) : 294.50
Sect: 4 Top of Section Depth(m): 299.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (3-7), 2A (11-17), 2B (19-23), 3A (26-27),
3B (29-31), 4A (34-41), 4B (42-45), 5 (47-52);
Texture : SIMILAR TO CORE 32-SECTION 2;
Alteration : SLIGHTLY;
Leg : 60 Top/Bottom Interval(mm): 0/1470 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 305.47
Core: 33 Top of Core Depth (m) : 304.00
Sect: 1 Top of Section Depth(m): 304.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (3-9), 2 (13-20), 3 (24-27), 4 (30-40),
5 (43-45), 6 (49-50), 7 (53-55), 8 (58-65),
9 (68-74), 10 (86-91), 11 (94-95), 12 (97-99),
13 (102-105), 14 (108-119), 15 (122-128),
16 (132-147);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, ALMOST HOLOXTLN;
Structure : PCE 4 IS PCES WITH OBVIOUS FOLIATION OR SLICKENSIDES
AND HAVE A SOAPY FEEL, PCE 7 IS HIGHLY CHLORITIZED;
Alteration : EXT
PCES 4+7;
MOD
REST OF SECTION;
Comments : MEDIUM GREY IN COLOR, GREENISH GREY AND GREENISH
BLACK CLAY MINERALS OCCUR, LIGHT OLIVE GREY (5Y5/2)
TO GREYISH GREEN (5G5/2);
Groundmass : INTERSTITIAL GNDMASS PARTIALLY ALTERED TO BROWN
CLAY;
Replacement: CLAY MINERALS
CHLORITE
Leg : 60 Top/Bottom Interval(mm): 0/1370 Analyst: Sharaskin, A.
Hole: 458 Sample Midpoint (m) : 306.87
Core: 33 Top of Core Depth (m) : 304.00
Sect: 2 Top of Section Depth(m): 305.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-10), 2 (12-20), 3 (23-28), 4 (32-37),
5 (39-45), 6 (48-51), 7 (54-58), 8A (61-70),
8B (71-77), 9 (80-83), 10 (86-89), 11 (92-99),
12 (102-106), 13 (109-112), 14 (114-137);
Texture : APHYRIC, MEDIUM TO COARSE GRAINED, ALMOST HOLOXTLN;
Structure : IRREGULAR CRACKS ARE FILLED WITH CARB AND OPALLINE
SILICA IN PCES 4+6+8+11+14, LAST THREE PCES CONTAIN
VEINS WITH GREENISH GREY AND GREENISH BLACK CLAY
MINERALS;
Alteration : EXT
PCE 8B;
MOD
REST OF SECTION;
Comments : MEDIUM GREY IN COLOR;
Vesicles : Size(mm): 0.5-2 Percent:
PCE 1 HAS A LARGE ELONGATED VESICLE WHICH IS
PARTLY FILLED WITH CLAY.MIN (<15MM), PCES FROM
8-14 ALMOST COMPLETELY LACK VESICLES;
Replacement: CLAY MINERALS
SILICA
CARBONATE
Leg : 60 Top/Bottom Interval(mm): 0/1350 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 314.85
Core: 34 Top of Core Depth (m) : 313.50
Sect: 1 Top of Section Depth(m): 313.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1A (2-10), 1B (5-10), 2 (14-20), 3 (24-29),
4A (32-33), 4B (34-36), 4C (37-41), 4D (44-46),
5A (50-55), 5B (56-58), 5C (59-60), 6 (64-67),
7 (70-75), 8A (78-82), 8B (84-92), 9A (96-102),
9B (97-100), 10A (105-107), 10B (108-110),
11A (114-121), 11B (122-129), 12 (133-135);
Texture : APHYRIC, MEDIUM GRAINED;
Structure : PCE 1 IS HIGHLY FRACTURED, PCE 5 HAS WHITE VEINS
ALONG WHICH THE FRAGMENTS ARE BROKEN, SECONDARY
MINERALS ALONG FRACTURES AND AMYGDULES AND VEINS;
Alteration : EXT;
Comments : PCE 1 IS GREENISH GREY (5GY4/1) WITH ALTERATION TO
GREYISH GREEN (5G5/2), CONTINUATION OF THE MASSIVE
MATERIAL BEGINNING IN CORE 32;
Vesicles : Size(mm): Percent: >10
SMALL SPHERICAL OR IRREGULAR VESICLES;
Replacement: CLAY MINERALS
CARBONATE
Leg : 60 Top/Bottom Interval(mm): 0/ 780 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 315.78
Core: 34 Top of Core Depth (m) : 313.50
Sect: 2 Top of Section Depth(m): 315.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1A (2-10), 1B (11-17), 1C (18-22), 1D (23-35),
1E (36-45), 2A (48-50), 2B (52-60), 3 (63-78);
Texture : APHYRIC, MEDIUM GRAINED, SIMILAR TO PREVIOUS SECTION
IN TEXTURE AND MINERALOGY;
Structure : VARIABLY VEINED AND FRACTURED WITH SECONDARY CLAYS
AND CARB ON FRACTURE SURFACES AND IN VEINS AND
AMYGDULES;
Alteration : EXT;
Comments : MATRIX OF THE ROCK IS DARK GREENISH GREY (5GY4/1);
Vesicles : Size(mm): Percent: >10
SMALL SPHERICAL OR IRREGULAR VESICLES;
Replacement: CLAY MINERALS
CARBONATE
Leg : 60 Top/Bottom Interval(mm): 0/1470 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 324.47
Core: 35 Top of Core Depth (m) : 323.00
Sect: 1 Top of Section Depth(m): 323.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-5), 2 (7-10), 3 (13-16), 4 (18-22),
5A (25-36), 5B (38-46), 6 (48-60), 7 (63-65),
8 (68-75), 9 (79-80), 10 (83-84), 11 (85-92),
12 (94-106), 13 (111-120), 14 (122-126),
15 (129-147);
Texture : APHYRIC, FINE TO MEDIUM GRAINED;
Structure : PCES 1-5B+12-15 ARE MOD FRACTURED, PCES 6 THROUGH
THE UPPER PART OF 12 ARE HIGHLY FRACTURED, CARB
VEINS SHOT THROUGH MOST OF THE FRAGMENTS, UPPER PART
OF PCES 12+15 ARE SIMILAR IN APPEARANCE AND CONTAIN
ROUNDED FRAGMENTS IN THE FRACTURED MATRIX, FRACTURED
MATERIAL LIES IN CONTACT WITH LARGE FRAGMENTS OF
FRACTURED BASALT, CEMENTED FRACTURE BRECCIA
IN PCES 12-15;
Alteration : EXT;
Comments : CONTINUATION OF THE MASSIVE FLOW WHICH BEGAN IN CORE
32;
Vesicles : Size(mm): Percent: 15
PCES 1-4;
Size(mm): Percent: >10
REST OF SECTION;
Replacement: CLAY MINERALS
CARBONATE
Leg : 60 Top/Bottom Interval(mm): 0/1340 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 325.84
Core: 35 Top of Core Depth (m) : 323.00
Sect: 2 Top of Section Depth(m): 324.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-5), 2 (6-22), 3 (24-30), 4 (33-36),
5 (39-50), 6 (52-58), 7 (61-64), 8 (68-74),
9 (77-79), 10 (82-88), 11 (90-97), 12 (100-107),
13 (110-113), 14 (116-120), 15 (123-126),
16 (128-134);
Texture : APHYRIC, FINE TO MEDIUM GRAINED;
Structure : NUMEROUS VEINS OF CARB AND GREEN CLAYS, VARIABLY
VEINED AND FRACTURED;
Alteration : EXT;
Comments : CONTINUATION OF FLOW WHICH BEGAN IN CORE 32 AND THE
TOP OF ANOTHER FLOW IN THIS SECTION, PEBBLES IN PCES
4+8+12, DARK GREENISH GREY MATRIX (5G4/1) IN PCES
1-4, PCES 6-7 ARE GREENISH BLACK (5GY2/1), PCES 6-7
ARE GREENISH GREY (5G6/1) TO LIGHT BLUISH GREY,
PCES 11-16 ARE DARK GREENISH GREY (5GY4/1);
Vesicles : Size(mm): Percent: 10-20
Location: Filling:
Shape : IRREGULAR
VESICLES ARE UP TO 13MM IN THE LOWER PART OF THE
SECTION, MORE VESICULAR THAN PREVIOUS SECTION,
A FEW TRAINS OF TINY VESICLES;
Replacement: CLAY MINERALS
ALTERATION MORE PROMINENT IN VEINS AND GNDMASS
REPLACEMENT;
CARBONATE
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Sharaskin, A.
Hole: 458 Sample Midpoint (m) : 334.00
Core: 36 Top of Core Depth (m) : 332.50
Sect: 1 Top of Section Depth(m): 332.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (4-7), 2 (10-13), 3 (15-20), 4 (22-25),
5 (26-35), 6 (38-40), 7 (43-45), 8A (48-52),
8B (53-63), 8C (64-67), 9 (70-75), 10 (78-80),
11 (84-89), 12 (91-94), 13 (96-98), 14 (101-106),
15 (108-112), 16 (114-117), 17 (120-122),
18 (125-133), 19 (135-141), 20 (143-150);
Texture : APHYRIC, FINE GRAINED, PCES 1+12-14 ARE BRECCIAS
WITH ANGULAR AND SUBANGULAR FRAGMENTS CEMENTED WITH
GREENISH BLACK AMORPHIC MATERIAL, ALL OTHER PCES ARE
LARGER FRAGMENTS OF BRECCIATED ZONE WITHIN THE
UNIFORM BASALTIC UNIT;
Structure : ROCKS ARE INTENSELY FRACTURED AND MYLONITIZED
DOWNWARD THROUGH THE SECTION, CEMENTED FRACTURE
BRECCIA OCCURS IN PCE 14, ALL PCES HAVE SLICKENSIDES
COVERED ON THE SURFACES WITH GREENISH BLACK
MYLONITIZED MATERIAL;
Alteration : EXT;
Comments : COLOR IS GREENISH GREY (5G4/1) AND FRACTURES ARE
GREENISH BLACK IN APPEARANCE (5GY2/1);
Vesicles : Size(mm): 1-20 Percent:
Location: Filling:
Shape : IRREGULAR
VESICLES PARTLY FILLED WITH SPHERULITIC AGGREGATES
OF SECONDARY MINERALS;
Replacement: CLAY MINERALS
CLAY MINERAL ALTERATION IS INTENSE IN THE FRACTURE
BRECCIA AND MYLONITE ZONES;
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Sharaskin, A.
Hole: 458 Sample Midpoint (m) : 335.50
Core: 36 Top of Core Depth (m) : 332.50
Sect: 2 Top of Section Depth(m): 334.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (3-6), 2 (8-11), 3 (14-17), 4 (19-27),
5 (29-35), 6 (39-42), 7 (45-47), 8 (49-51),
9 (54-55), 10 (58-61), 11 (63-66), 12 (68-70),
13 (73-77), 14 (80-82), 15 (85-87), 16 (89-94),
17 (95-102), 18 (103-150);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, SIMILAR TO ROCKS IN
PREVIOUS SECTION, DEGREE OF BRECCIATION INCREASES
DOWNWARD;
Structure : ZONE OF RELATIVELY LARGE FRAGMENTS WITH SLICKENSIDES
FROM PCES 1-6 IS FOLLOWED BY A ZONE OF HIGHLY
BRECCIATED PCES (7-14) AND THEN A ZONE OF INTENSELY
SHEARED PCES CONVERTED INTO TECTONIC FRACTURE
MYLONITES;
Alteration : EXT;
Comments : CONTINUATION OF THE FLOW UNIT BEGAN IN CORE 32;
Replacement: CLAY MINERALS
CLAY MINERAL ALTERATION IS INTENSE IN THE FRACTURE
BRECCIA AND MYLONITE ZONES;
Leg : 60 Top/Bottom Interval(mm): 0/1490 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 343.49
Core: 37 Top of Core Depth (m) : 342.00
Sect: 1 Top of Section Depth(m): 342.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-8), 2 (10-18), 3 (20-30), 4A (33-37),
4B (38-43), 5 (47-49), 6 (53-58), 7 (60-67),
8 (70-79), 9 (81-86), 10 (88-91), 11 (94-100),
12 (104-105), 13 (108-111), 14 (114-117),
15 (121-124), 16 (126-127), 17 (131-135),
18 (136-149);
Texture : APHYRIC;
Structure : LARGER PCES TEND TO BE FRACTURE-FREE BUT WHERE
NOTHING BUT PEBBLES WERE FOUND MAY REPRESENT
FRACTURE ZONES IN THE HOLE, THIS CORE IS THE BASE
OF THE SECOND MASSIVE FLOW IN THE LITHOLOGIC UNIT,
NO VEINS ARE PRESENT;
Alteration : EXT;
Comments : COLOR IS OLIVE GREY TO MEDIUM GREY (5Y4/1 TO N5);
Leg : 60 Top/Bottom Interval(mm): 0/ 800 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 344.30
Core: 37 Top of Core Depth (m) : 342.00
Sect: 2 Top of Section Depth(m): 343.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1A (3-4), 1B (5-7), 2 (10-18), 3 (20-26),
4 (28-35), 5 (37-42), 6 (45-48), 7 (54-56),
8A (58-63), 8B (64-70), 8C (71-80);
Texture : APHYRIC, SIMILAR TO PREVIOUS SECTION;
Structure : LITTLE FRACTURING AND NO VEINS;
Alteration : EXT;
Comments : COLOR VARIES FROM DARK GREENISH GREY TO OLIVE GREY
(5G4/1 TO 5Y4/1);
Leg : 60 Top/Bottom Interval(mm): 0/ 800 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 352.30
Core: 38 Top of Core Depth (m) : 351.50
Sect: 1 Top of Section Depth(m): 351.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1A (3-7), 1B (7-12), 1C (10-12), 1D (13-19),
2 (22-25), 3 (28-31), 4A (34-35), 4B (36-39),
5 (41-45), 6 (47-58), 7 (61-66), 8 (69-73),
9 (75-80);
Texture : APHYRIC, FINE TO VERY FINE GRAINED;
Structure : NO VEINS AND FEW FRACTURES;
Alteration : EXT;
Comments : MEDIUM BLUISH GREY (5B5/1) TO GREENISH GREY (5GY6/1)
IN PCES 7-9;
Vesicles : Size(mm): Percent: 10
Leg : 60 Top/Bottom Interval(mm): 0/1480 Analyst: Fryer, P.
Hole: 458 Sample Midpoint (m) : 362.48
Core: 39 Top of Core Depth (m) : 361.00
Sect: 1 Top of Section Depth(m): 361.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (3-5), 2 (8-10), 3 (12-15), 4 (17-20),
5 (22-26), 6 (28-30), 7 (37-41), 8 (42-54),
9 (56-61), 10 (63-71), 11 (74-84), 12A (85-94),
12B (95-110), 13 (113-121), 14A (123-127),
14B (125-128), 15 (130-139), 16 (142-148);
Texture : APHYRIC, PCE 7 HAS A FLAT UPPER GLASSY AND
SPHERULITIC MARGIN;
Structure : PCES 9-16 ARE HIGHLY FRACTURED AND HAVE CLAYS
FILLING THE FRACTURES, PCES 4+7+9-16 APPEAR TO BE
PILLOWS;
Alteration : MOD TO EXT;
Comments : PCES 1+2+6 ARE OLIVE GREY (5Y4/1);
Vesicles : Size(mm): 1-2 Percent: 15
Location: Filling:
Shape : SPHERICAL
PCES 3+5, SOME ELONGATE VESICLES, VARYING DEGREES
OF VESICULARITY, PCES 1+2+6 ARE SLIGHTLY
VESICULAR;
Replacement: CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/1260 Analyst: Sharaskin, A.
Hole: 458 Sample Midpoint (m) : 363.76
Core: 39 Top of Core Depth (m) : 361.00
Sect: 2 Top of Section Depth(m): 362.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-5), 2 (9-12), 3 (15-20), 4A (24-27),
4B (26-28), 5A (31-46), 5B (45-55), 6 (57-68),
7A (70-95), 7B (95-115), 7C (117-126);
Texture : APHYRIC, FINE TO MEDIUM GRAINED;
Structure : A COMPLICATED NETWORK OF CRACKS AND FRACTURES IS
OBSERVED IN ALL PCES, FRACTIONATION TOOK PLACE WITH
LITTLE DISPLACEMENT OF FRAGMENTS, DEGREE OF
FRACTIONATION SEEMS TO BE GREATER IN THE UPPER PART
OF THE CORE (0-30CM), BENEATH THIS ZONE ROCKS ARE
WELL CEMENTED BY GREENISH BLACK MATERIAL FILLING THE
CRACKS, THE MOST COMPLEX SECONDARY MINERAL
COMPOSITION IS OBSERVED WITHIN THE CRACKS IN PCE 7C
WHERE THE WHITE AND LIGHT OLIVE GREY PRODUCTS ARE
PRESENT IN ADDITION TO GREENISH BLACK MATERIAL;
Alteration : EXT
ALTERATION IS MOST INTENSE NEAR THE CRACKS WHERE
THE ROCK COLOR IS DARK GREENISH GREY;
Comments : SPARSE NATIVE COPPER INCLUSIONS OCCUR IN THE CEMENT,
FRAGMENTS ARE GREENISH GREY TO BLUISH GREY;
Vesicles : Size(mm): 1-7 Percent:
RARE, FILLED WITH WHITE OR OLIVE GREY SECONDARY
PRODUCTS;
Replacement: CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/ 500 Analyst: Sharaskin, A.
Hole: 458 Sample Midpoint (m) : 364.50
Core: 39 Top of Core Depth (m) : 361.00
Sect: 3 Top of Section Depth(m): 364.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (1-39), 2 (41-50);
Texture : APHYRIC, MEDIUM GRAINED, SIMILAR TO ROCKS FROM THE
PREVIOUS SECTION;
Structure : COMPLEX NETWORK OF CRACKS AND FRACTURES, NATIVE
COPPER FILLS CRACKS AND VEINS;
Alteration : EXT;
Comments : FRAGMENTS OLIVE GREY, NATIVE COPPER GRAINS OBSERVED
IN THE CORE;
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Sharaskin, A.
Hole: 458 Sample Midpoint (m) : 372.00
Core: 40 Top of Core Depth (m) : 370.50
Sect: 1 Top of Section Depth(m): 370.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1A (1-10), 1B (10-16), 1C (17-33), 1D (34-40),
1E (41-50), 1F (50-59), 1G (59-67), 1H (64-77),
1I (78-86), 1J (87-94), 1K (94-102), 1L (102-109),
1M (110-117), 1N (117-124), 1O (124-131),
1P (132-140), 1Q (139-150);
Texture : APHYRIC, FINE GRAINED;
Structure : IRREGULAR NETWORK OF CRACKS FILLED WITH GREENISH
BLACK AND GREYISH GREEN AND WHITE MATERIAL, ALTERED
AND FRACTURED ZONES BETWEEN PCES 1C-D AND 1J-K,
THESE ZONES APPEAR AS IF THEY WERE HYALOCLASTITES
IN THE CONTACT OF PILLOW;
Comments : DARK GREENISH GREY COLOR, NO VISIBLE NATIVE COPPER;
Replacement: CLAY MINERALS
GREENISH BLACK AND GREYISH GREEN AND WHITE;
Leg : 60 Top/Bottom Interval(mm): 0/1210 Analyst: Sharaskin, A.
Hole: 458 Sample Midpoint (m) : 373.21
Core: 40 Top of Core Depth (m) : 370.50
Sect: 2 Top of Section Depth(m): 372.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-8), 2A (10-20), 2B (20-26), 3A (28-32),
3B (32-35), 4A (37-44), 4B (45-54), 4C (56-63),
4D (64-76), 5 (79-82), 6 (84-86), 7 (89-94),
8 (95-101), 9 (104-109), 10 (111-121);
Texture : APHYRIC, SIMILAR TO PREVIOUS SECTION;
Structure : ALTERED AND FRACTURED AS PREVIOUS SECTION;
Alteration : EXT;
Vesicles : MORE VESICULAR THAN PREVIOUS SECTION--ESPECIALLY
PCES 2A-4B+9;
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 381.50
Core: 41 Top of Core Depth (m) : 380.00
Sect: 1 Top of Section Depth(m): 380.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-150);
Texture : APHYRIC, FINE TO MEDIUM GRAINED, ANGULAR FRAGMENTS
RANGING IN SIZE FROM MM TO 5-10CM;
Structure : FRACTURED INTO FRAGMENTS WHICH COULD BE RELATED TO
DRILLING THOUGH MOST OF IT MUST HAVE BEEN ALONG
PRE-EXISTING CRACKS;
Alteration : EXT;
Comments : COLOR IS GREENISH BLACK (5G2/1), ALTERATION MINERAL
IS GREENISH GREY IN COLOR, COLOR IS DARKER THAN
PREVIOUS CORES;
Vesicles : SLIGHTLY VESICULAR;
Replacement: GREENISH GREY MICACEOUS MINERAL IS PERVASIVELY
DISTRIBUTED THROUGH THE CORE PARTICULARLY
ALONG INCIPIENT FRACTURES;
Leg : 60 Top/Bottom Interval(mm): 0/ 810 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 382.31
Core: 41 Top of Core Depth (m) : 380.00
Sect: 2 Top of Section Depth(m): 381.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-81);
Texture : APHYRIC, SAME AS PREVIOUS SECTION;
Alteration : EXT;
Leg : 60 Top/Bottom Interval(mm): 0/ 200 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 382.72
Core: 41 Top of Core Depth (m) : 380.00
Sect: CC Top of Section Depth(m): 382.62
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-20);
Texture : APHYRIC, SAME AS PREVIOUS SECTION;
Structure : HIGHLY FRACTURED;
Alteration : EXT;
Leg : 60 Top/Bottom Interval(mm): 0/1480 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 390.98
Core: 42 Top of Core Depth (m) : 389.50
Sect: 1 Top of Section Depth(m): 389.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (0-21), 2 (24-26), 3 (29-35), 4 (38-41),
5 (44-53), 6 (58-63), 7 (69-71), 8 (74-82),
9 (84-87), 10 (90-102), 11 (105-112), 12 (115-119),
13 (122-126), 14 (130-135), 15 (137-148);
Texture : FINE TO MEDIUM GRAINED;
Structure : MOST FRAGMENTS APPEAR TO BE PART OF PILLOWS,
VESICULAR PCES ARE LACED WITH VEINS OF CHLORITE AND
SECONDARY MINERALS;
Alteration : EXT;
Comments : COLOR IS DARK GREENISH GREY (5G4/1) TO GREENISH
BLACK (5GY2/1);
Vesicles : Size(mm): 0.2-4 Percent:
VESICULAR PCES ARE GENERALLY MORE ALTERED THAN
MASSIVE PCES, VESICLES ARE FILLED WITH SECONDARY
MINERALS LIKE CLAYS AND ZEOLITE AND CHALC;
Replacement: CLAY MINERALS
ZEOLITE
CHALCEDONY
CHLORITE
Leg : 60 Top/Bottom Interval(mm): 0/1490 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 400.49
Core: 43 Top of Core Depth (m) : 399.00
Sect: 1 Top of Section Depth(m): 399.00
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-7), 2 (10-13), 3 (16-17), 4 (20-23),
5 (27-31), 6 (34-37), 7 (40-41), 8 (43-44),
9 (47-51), 10 (56-58), 11 (60-64), 12 (66-70),
13 (72-77), 14 (80-82), 15 (85-86), 16 (89-91),
17 (94-97), 18 (100-102), 19 (105-106),
20 (109-110), 21 (114-115), 22 (118-121),
23 (124-127), 24 (128-131), 25 (133-136),
26 (138-142), 27 (144-149);
Texture : APHYRIC, FINE GRAINED, TYPE 1 (PCES 1-8+12+14-16+27)
IS A MASSIVE VERY FINE GRAINED FRAGMENT, TYPE 2
(PCES 9-11+13+17-26) IS AN APHYRIC VARIOLITIC
FRAGMENT;
Structure : VEINS AND FRACTURES ARE PRESENT, TYPE 1 HAS
FRACTURES WHICH ARE THIN AND CLOSELY SPACED AND ARE
LINED WITH ZEOLITE (PHILLIPSITE?) AND GREEN SMEC
(NONTRONITE?), TYPE 2 IS HIGHLY FRACTURED WITH
FRACTURES UP TO 2MM FILLED WITH SAME MINERALS AS
TYPE 1 AND NO CARB, TYPE 2 IS APPARENTLY PILLOW RIND
FRAGMENTS WHILE TYPE 1 COULD REPRESENT PILLOW
INTERIOR FRAGMENTS;
Alteration : EXT
ALTERATION PENETRATIVE IN TYPE 1 FRAGMENTS;
Comments : COLOR GREENISH BLACK (5GY2/1) TO GREENISH GREY
(5G4/1);
Vesicles : TYPE 1 IS SPARSELY VESICULAR TO NON-VESICULAR;
Replacement: ZEOLITE
POSSIBLY PHILLIPSITE;
SMECTITE
GREEN, POSSIBLY NONTRONITE;
Leg : 60 Top/Bottom Interval(mm): 0/ 500 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 401.00
Core: 43 Top of Core Depth (m) : 399.00
Sect: 2 Top of Section Depth(m): 400.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-7), 2 (10-13), 3 (16-24), 4 (27-32),
5 (35-38), 6 (40-43), 7 (45-50);
Texture : SAME DESCRIPTION AS PREVIOUS SECION, PCES 2+5 ARE
VARIOLITIC, PCES 1+3+4+6+7 ARE MASSIVE AND FINE
GRAINED;
Structure : PCES 2+5 ARE VEINED WITH ZEOLITE+CLAY.MIN;
Alteration : EXT;
Comments : PCES 2+5 ARE GREENISH BLACK AND PCES 1+3+4+6+7 ARE
DARK GREENISH GREY;
Vesicles : Size(mm): 1-2 Percent:
Location: Filling:
Shape : IRREGULAR
PCES 1+3+4+6+7, PCES 2+5 ARE ALSO VESICULAR;
Replacement: ZEOLITE
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/1500 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 410.00
Core: 44 Top of Core Depth (m) : 408.50
Sect: 1 Top of Section Depth(m): 408.50
LITHOLOGY: BONINITE;
HIGH-MG BRONZITE ANDESITE;
Piece No. : PCE 1 (2-12), 2 (15-23), 3 (26-29), 4 (30-40),
5 (42-50), 6A (52-53), 6B (54-59), 7 (62-70),
8 (71-77), 9 (79-87), 10 (90-93), 11 (95-150);
Texture : TWO TYPES OF FRAGMENTS PRESENT AS IN CORE 43-SECTION
1, PCES 3+4+6+7+8-10 ARE PILLOW RIND FRAGMENTS WITH
SPHERULITIC ZONES, PCES 1+2+5 ARE MASSIVE FINE
GRAINED ALTERED BASALT;
Structure : THE PILLOW RIND FRAGMENTS ARE ABUNDANTLY FRACTURED,
BELOW 95CM THE CORE IS HIGHLY FRACTURED AND INCLUDES
BOTH PILLOW RIM AND PILLOW INTERIOR FRAGMENTS;
Alteration : EXT;
Comments : PCES 1+2+5 ARE GREENISH GREY, PCES 3+4+6-10 ARE
GREENISH BLACK;
Vesicles : PCES 3+4+6-10 ARE VESICULAR WITH VESICLES EMPTY
OR PARTIALLY FILLED WITH ZEOL + OR - CLAY;
Replacement: ZEOLITE
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/1490 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 419.49
Core: 45 Top of Core Depth (m) : 418.00
Sect: 1 Top of Section Depth(m): 418.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-7), 2 (10-12), 3 (15-18), 4 (21-26),
5 (29-30), 6 (34-41), 7 (44-48), 8 (50-68),
9A (70-83), 9B (84-93), 10 (97-100), 11 (104-109),
12 (112-114), 13 (116-124), 14 (126-131),
15 (133-137), 16 (140-149);
Texture : FINE GRAINED IN PCES 1+3-9A+14-16 AND MASSIVE,
PCES 2+9B-12 ARE VARIOLITIC PILLOW RIND FRAGMENTS;
Structure : FRACTURES ARE COATED WITH SMEC, PCES 2+9B-12 ARE
VEINED WITH ZEOLITE AND CLAY;
Alteration : EXT;
Comments : PCES 1+3-9A+14-16 ARE DARK GREENISH GREY AND THE
REST OF THE SECTION IS GREENISH BLACK;
Vesicles : Size(mm): 1-3 Percent:
PCES 2+9B-12 ARE HIGHLY VESICULAR, REST OF SECTION
HAVE IRREGULAR VESICLES THAT INCREASE IN ABUNDANCE
TOWARDS THE VESICULAR PILLOW RINDS ABOVE THEM,
MOST ARE FILLED WITH ZEOLITE OR CLAY;
Replacement: ZEOLITE
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/ 400 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 419.90
Core: 45 Top of Core Depth (m) : 418.00
Sect: 2 Top of Section Depth(m): 419.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-23), 2 (24-33), 3 (36-40);
Texture : APHYRIC, PCE 1 IS AN INTERVAL OF BRECCIA PRODUCED
BY DRILLING COMPOSED OF VARIOLITIC PILLOW RIND AND
MASSIVE PILLOW INTERIOR FRAGMENTS, PCE 2 IS A
MASSIVE FINE GRAINED BASALT, PCE 3 IS A HIGHLY
VESICULAR FINE GRAINED PILLOW RIND FRAGMENT ALTERED
TO ZEOLITE AND CLAYS;
Structure : PILLOW INTERVAL;
Alteration : EXT;
Comments : PCE 2 IS DARK GREENISH GREY, PCE 3 IS GREENISH
BLACK;
Vesicles : PCE 2 IS SLIGHTLY VESICULAR AND PCE 3 IS
HIGHLY VESICULAR;
Replacement: ZEOLITE
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/1220 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 428.72
Core: 46 Top of Core Depth (m) : 427.50
Sect: 1 Top of Section Depth(m): 427.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-35), 2 (39-45), 3 (49-52), 4 (55-59),
5 (63-65), 6 (68-73), 7 (77-80), 8 (84-94),
9 (96-112), 10 (115-122);
Texture : APHYRIC, FINE GRAINED, PCES 1-4+10 ARE PILLOW
BASALTS ALTERED TO CLAY AND ZEOLITE, PCES 5-9 ARE
FINE GRAINED FRACTURED BASALTS ALTERED MAINLY TO
CLAYS;
Structure : PCES 5-9 HAVE VERTICAL CHILL RINDS SUGGESTING PILLOW
SHAPES OF SOME SIZE, VEINS AND CAVITY FILLINGS ARE
LACKING;
Alteration : EXT;
Comments : PCES 1-4+10 ARE DARK GREENISH GREY (5GY4/1) AND PCES
5-9 ARE DARK GREY (N3) TO GREENISH BLACK (5G2/1);
Vesicles : ALL PCES ARE SPARSELY VESICULAR WITH MOST BEING
UNFILLED;
Replacement: ZEOLITE
CLAY MINERALS
Leg : 60 Top/Bottom Interval(mm): 0/1370 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 438.37
Core: 47 Top of Core Depth (m) : 437.00
Sect: 1 Top of Section Depth(m): 437.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-4), 2 (8-10), 3 (12-15), 4 (17-23),
5 (26-28), 6 (32-49), 7 (51-55), 8 (58-65),
9 (68-71), 10 (74-75), 11 (77-90), 12 (94-98),
13 (100-108), 14 (110-115), 15 (118-122),
16 (126-129), 17 (132-137);
Texture : APHYRIC, FINE GRAINED, GLASSY RIM ON PCE 12;
Structure : FRACTURE SURFACES COATED WITH SMEC AND CLAYS;
Alteration : EXT;
Comments : COLOR RANGES FROM DARK GREENISH GREY TO GREENISH
BLACK (5GY4/1 TO 5GY2/1);
Vesicles : Size(mm): 15-20 Percent:
VESICLES OCCASIONALLY ALIGNED IN NEAR HORIZONTAL
ORIENTATION;
Replacement: ZEOLITE
CLAY MINERALS
BASALT ALTERED TO THESE TWO MINERALS;
Leg : 60 Top/Bottom Interval(mm): 0/ 980 Analyst: Meijer, A.
Hole: 458 Sample Midpoint (m) : 439.48
Core: 47 Top of Core Depth (m) : 437.00
Sect: 2 Top of Section Depth(m): 438.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (2-5), 2 (8-10), 3 (12-15), 4 (18-22),
5 (26-30), 6 (34-37), 7 (40-46), 8 (50-52),
9 (55-60), 10 (63-67), 11 (70-75), 12 (78-81),
13 (85-88), 14 (92-98);
Texture : APHYRIC, FINE GRAINED, SIMILAR TO BASALT IN PREVIOUS
SECTION;
Structure : VEINING MATERIAL IN THESE FRAGMENTS IS WHITE COLORED
BUT MUCH HARDER THAN ZEOLITES OF CORES ABOVE THIS
ONE, POSSIBLY A DIFFERENT ZEOLITE OR SILICA, VEINS
ARE NOT COATED WITH CLAY MINERALS;
Alteration : EXT;
Comments : GREENISH BLACK (5GY2/1);
Replacement: ZEOLITE
CLAY MINERALS
ZEOLITE MAY BE SILICA IN SOME CASES;
Leg : 60 Top/Bottom Interval(mm): 0/1030 Analyst: Sharaskin, A.
Hole: 458 Sample Midpoint (m) : 447.53
Core: 48 Top of Core Depth (m) : 446.50
Sect: 1 Top of Section Depth(m): 446.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-103);
Texture : APHYRIC;
Structure : EXTREMELY FRACTURED, FRACTURING AND ALTERATION
NEARLY OBLITERATE THE ORIGINAL LITHOLOGIC FEATURES;
Alteration : EXT;
Comments : ROCKS ARE SO SOFT THEY CAN BE SCRATCHED EASILY WITH
A FINGERNAIL;
Vesicles : VESICULAR;
Leg : 60 Top/Bottom Interval(mm): 0/ 210 Analyst: Sharaskin, A.
Hole: 458 Sample Midpoint (m) : 447.73
Core: 48 Top of Core Depth (m) : 446.50
Sect: CC Top of Section Depth(m): 447.62
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : NO DESCRIPTION GIVEN ON THIS SECTION;
Comments : CORE CATCHER AT BOTTOM OF CORE 48-1 WITH NO
DESCRIPTION GIVEN;
Leg : 60 Top/Bottom Interval(mm): 0/1460 Analyst: Sharaskin, A.
Hole: 458 Sample Midpoint (m) : 457.46
Core: 49 Top of Core Depth (m) : 456.00
Sect: 1 Top of Section Depth(m): 456.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-19), 2 (22-26), 3 (28-31), 4 (34-40),
5 (42-49), 6 (50-62), 7 (64-68), 8 (70-75),
9 (78-85), 10 (88-92), 11 (95-103), 12 (106-108),
13 (111-115), 14 (116-120), 15 (122-126),
16 (129-132), 17 (134-139), 18 (142-146);
Texture : APHYRIC, DISMEMBERED SMALL (<3-4CM IN DIAMETER)
ANGULAR AND SUBANGULAR FRAGMENTS OF FINE GRAINED
BASALTS, PCES 12-18 ARE MORE MASSIVE AND SLIGHTLY
ROUNDED BY DRILLING, PCE 15 LOOKS LIKE ALTERED
HYALOCLASTITE REPRESENTING DISINTEGRATED GLASSY
MARGINS OF THE PILLOW BASALTS;
Structure : MANY FRAGMENTS HAVE SLICKENSIDES AS THE RESULT OF
BRECCIATION, SLICKENSIDES ARE ABSENT FROM PCES 12-18
BUT THESE ARE PROBABLY PILLOW BASALTS;
Alteration : EXT;
Comments : BASALTS ARE DARK GREENISH GREY (5GY4/1),
SLICKENSIDES ARE FROM GREENISH BLACK TO GREYISH BLUE
GREEN (5GY2/1 TO 5BG5/2);
Vesicles : RANDOM SPHERICAL VESICLES PARTLY FILLED WITH
CHLORITE + ZEOLITE + CLAY.MIN;
Replacement: ZEOLITE
CLAY MINERALS
CHLORITE
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