Leg : 82 Top/Bottom Interval(mm): 0/1300 Analyst: Brannon, J.
Hole: 558 Sample Midpoint (m) : 409.30
Core: 27 Top of Core Depth (m) : 405.00
Sect: 3 Top of Section Depth(m): 408.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-4), 2 (6-13), 3 (15-23), 4 (25-28),
5 (32-38), 6 (40-58), 7 (59-74), 8 (75-85),
9 (86-96), 10 (97-105), 11A (105-112),
11B (111-120), 11C (120-130);
Texture : PCES 1-5 HAVE VARIOLITIC TEXTURE(VARIOLES RANGE FROM
1-6MM IN DIAMETER),PCES 6-9+11A-11C ARE FINE-GRAINED
APHYRIC BASALT,PCE 10 IS APHYRIC BASALT;
Structure : PILLOW BASALT,PCES 6-9 HAVE MANY IRREGULAR &
UNDULATING FRACTURES FILLED WITH CALCITE;
Alteration : MOD
PCES 1-5 HAVE SOME DEVT.GLS BETWEEN THE VARIOLES,
ALTERATION EXTENSIVE ALONG FRACTURES,PCE 10 IS THE
MOST BADLY ALTERED;
Comments : PCES 1-10 ARE OF QUESTIONABLE ORDER,PCES 1-5 HAVE
VARIOLES WHICH RANGE FROM DARK BROWN IN CENTER TO
LIGHT BROWN AT THE EDGES & DEVT.GLS IN THESE PCES
IS GRAY,PCES 6-9 ARE DARK GRAY(2.5YR N4/0),PCE 11
HAS SAME DESCRIPTIONS AS PCES 6-9;
Vesicles : Size(mm): <1 Percent: RARE
Location: Filling: UNIDENT.MINS
VESICLES ARE RARE & FILLED WITH UNIDENT.MINS IN
PCES 6-9;
Replacement: CALCITE
CALCITE FILLS FRACTURES IN PCES 6-9,PCE 10 HAS
CALCITE-FILLED FRACTURES & ONE EDGE HAS ZONED
CALCITE SEDIMENTATION-BRICK RED CALCITE WITH MIXED
LAYER OF CLAY.MIN,PCE 10 ALSO HAS SOME TRANSPARENT
SPARRY CALCITE & WHITE CALCITE;
DEVITRIFIED GLASS
PCES 1-5 HAVE DEVT.GLS BETWEEN VARIOLES;
CLAY MINERALS
LAYER OF CLAY.MINS IN PCE 10;
UNIDENTIFIED
UNIDENT.MINS FILL VESICLES IN PCES 6-9;
Leg : 82 Top/Bottom Interval(mm): 0/1400 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 415.90
Core: 28 Top of Core Depth (m) : 414.50
Sect: 1 Top of Section Depth(m): 414.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
INTERPILLOW BRECCIA;
LIMESTONE;
Piece No. : PCES 1 (1-7), 2 (8-13), 3 (15-43), 4 (44-50),
5 (51-62), 6 (64-70), 7 (72-77), 8 (78-84),
9 (86-96), 10 (97-107), 11 (108-113), 12 (114-121),
13 (124-128), 14 (130-137);
Texture : FINE-GRAINED APHYRIC BASALT EXCEPT FOR PCE 4,PCE 9
SHOWS TRANSITION FROM VITRIC BASALT AT THE TOP TO
TACHYLITIC(?) DEVITRIFIED BASALT,BOTTOMS OF PCES
10+11 OCCUR CHILLED RINDS OF GLASS WITH THE RIND OF
PCE 11 BEING A MULTIPLE ONE;
Structure : PILLOW BASALT,PCE 3 IS STRONGLY FRACTURED WITH SOME
VEINS FILLED WITH CALCITE CEMENT,FRACTURES COMMON IN
PCES 5-14;
Alteration : FRESH TO MOD
PCES 1-3+5-9+12-14,TOP 7CM OF PCE 10;
MOD
PCES 4+11,BOTTOM 2CM OF PCE 10,GLASS RIM & SOME
VERY SMALL BRECCIA PCES ARE ALTERED TO CLAY.MINS;
Comments : PCES 1-3 VARY IN COLOR FROM DARK GRAY(7.5YR N4/0) TO
GRAY(7.5YR N5/0),PCES 5-14 ARE GRAY(7.5YR N5/0),PCE
4 IS HYALOCLASTITE INTERPILLOW BRECCIA COMPRISED OF
ELONGATED GLASS PCES(1-30MM) WHICH ARE HORIZONTALLY
TEXTURED & ARE FRESH IN THE CENTER-ONLY THEIR RIMS &
SOME VERY SMALL BRECCIA PCES ARE ALTERED TO BROWN
CLAY.MINS & ONE VERTICAL ORIENTED GLASS PCE SHOWS
MULTIPLE GLASS RINDS SEPARATED FROM ONE ANOTHER BY
CLAY.MINS,THE TOP OF PCE 4 HAS TRANSPARENT CALCITE
CEMENT & THE MATRIX OF THE BRECCIA IS LIMESTONE;
Vesicles : Size(mm): 2-2.5 Percent: RARE
Location: Filling: CLAY.MIN
Shape : ROUND
VESICLES IN PCE 2 ARE ROUND & FILLED WITH CLAY.MIN
VESICLES IN PCES 5-14 ARE RARE & SOMETIMES FILLED
WITH CLAY.MIN;
Size(mm): 0.5 Percent:
EMPTY VESICLES IN PCE 2;
Replacement: CALCITE
CALCITE FILLS SOME SMALL VEINS,TRANSPARENT CALCITE
ON TOP OF PCE 4,MATRIX OF PCE 4 IS CALCITE;
CLAY MINERALS
CLAY.MINS SEPARATE GLASS RINDS FROM ONE ANOTHER IN
PCES 4+11,CLAY.MINS FILL SOME VESICLES,THE GLASS
RIM & SOME BRECCIA PCES IN PCE 4 ARE ALTERED TO
BROWN CLAY.MINS;
Leg : 82 Top/Bottom Interval(mm): 0/1350 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 417.35
Core: 28 Top of Core Depth (m) : 414.50
Sect: 2 Top of Section Depth(m): 416.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-14), 2 (16-19), 3 (19-31), 4 (33-37),
5 (40-43), 6 (45-49), 7 (52-57), 8 (59-64),
9 (66-74), 10 (75-85), 11 (86-99), 12 (99-104),
13 (105-113), 14 (115-118), 15 (121-128),
16 (129-135);
Texture : APHYRIC,VARIOLITIC BASALT CLOSE TO PILLOW MARGINS IN
PCES 2-4+10-11;
Structure : PILLOW BASALT,BROKEN & FRACTURED SURFACES;
Alteration : FRESH TO MOD
PCES 1+5-6+8-16,ALTERATION ALONG SOME FRACTURES;
EXT
PCES 2-4,SOME MOTTLING;
MOD
PCE 7;
Comments : BASALT IS LIGHT GRAY(7.5YR 6/0),MOTTLED GRAY-LIGHT
BROWN BASALT(10YR 6/4) IN PCES 2-4+10-11;
Vesicles :
Location: Filling: ZEOL
SCATTERED VESICLES PARTLY FILLED BY WHITE OR
GRAY(?) ZEOL;
Replacement: ZEOLITE
WHITE OR GRAY(?) ZEOL PARTLY FILL VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 419.00
Core: 28 Top of Core Depth (m) : 414.50
Sect: 3 Top of Section Depth(m): 417.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-17), 2 (18-26), 3 (28-34), 4 (36-41),
5 (43-49), 6 (50-59), 7 (60-70), 8 (73-78),
9 (79-82), 10 (83-87), 11 (89-95), 12 (96-103),
13 (103-107), 14 (107-115), 15 (116-120),
16 (122-131), 17 (135-140), 18 (140-149);
Texture : APHYRIC,SIMILAR TO CORES 28-1 & 28-2;
Structure : PILLOW BASALT(?),CALCITE VEINS OCCASIONALLY FOUND;
Alteration : FRESH TO MOD
Comments : LIGHT GRAY BASALT(7.5YR N6/0),ALTERED BASALT IS
LIGHT GRAY-BROWN(7.5YR N6/2),PCES 3+9+16 ARE
ACTUALLY COLLECTIONS OF SMALL PEBBLE-SIZED BASALT
FRAGMENTS,SMALL DARK PATCHES NOTED IN PCE 7 BUT ARE
UNIDENTIFIED;
Groundmass : PLAGIOCLASE
Size(mm): 1-2
PLAG XTLS VISIBLE;
Replacement: CALCITE
CALCITE VEINS;
Leg : 82 Top/Bottom Interval(mm): 0/ 150 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 419.15
Core: 28 Top of Core Depth (m) : 414.50
Sect: 4 Top of Section Depth(m): 419.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-13);
Texture : APHYRIC;
Structure : FRACTURED;
Alteration : MOD
WEATHERED ALONG FRACTURES;
Comments : BASALT IS WEATHERED BROWN ALONG FRACTURES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 558 Sample Midpoint (m) : 425.00
Core: 29 Top of Core Depth (m) : 423.50
Sect: 1 Top of Section Depth(m): 423.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 1 (1-13), 2A (15-24), 2B (23-30), 2C (28-30),
3 (30-35), 4 (37-59), 5A (59-64), 5B (64-70),
6A (70-75), 6B (76-85), 6C (84-88), 7A (89-101),
7B (101-113), 7C (113-122), 7D (123-147);
Texture : APHYRIC,PCES 1-6C ARE VARIOLITIC & FINE-GRAINED,PCES
7A-7D ARE FINE-GRAINED WITH VARIOLITIC EDGES;
Structure : PILLOW BASALT,PCES 2A-6C HAVE LIMESTONE FILLING IN
FRACTURES;
Alteration : EXT
PCE 1;
MOD
PCES 2A-6C,TOP 7CM OF PCE 7A,LOWER 4CM OF PCE 7D;
FRESH TO MOD
PCES 7B-7C,TOP 20CM OF PCE 7D;
Comments : PCES 2A-6C ARE BROWNISH-GRAY(2.5Y 5/2),PCES 7A-7D
VARY FROM GRAY-BROWN(10YR 5/2) TO GRAY(2.5Y N5/0),
BLACK CLAY.MINS IN VESICLES;
Vesicles : Size(mm): Percent: 5
Location: Filling: CLAY.MINS
VESICLES FILLED WITH BLACK CLAY.MINS IN PCE 7A;
Replacement: CLAY MINERALS
BLACK CLAY.MINS FILL VESICLES IN PCE 7A;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 426.50
Core: 29 Top of Core Depth (m) : 423.50
Sect: 2 Top of Section Depth(m): 425.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
INTERPILLOW BRECCIA;
LIMESTONE;
Piece No. : PCES 1 (0-4), 2 (7-11), 3 (13-15), 4 (17-22),
5 (24-27), 6 (28-41), 7 (43-49), 8 (51-60),
9 (61-67), 10 (68-73), 11A (74-80), 11B (79-81),
12 (83-89), 13 (90-100), 14 (101-105), 15 (106-110),
16A (111-120), 16B (120-130), 16C (130-141),
17 (142-148);
Texture : APHYRIC,SOME ANGULAR GLASS FRAGMENTS,APHANITIC
MARGINS & VARIOLITIC ZONES;
Structure : PILLOW BASALT,SMALL CALCITE VEINS;
Alteration : MOD
PCES 1-5+7-17,PALAGONITIZED GLASS,MOTTLED;
EXT
PCE 6;
Comments : PCES 1-15 ARE INTERPILLOW BRECCIA WITH APHANITIC
APHYRIC BLACK CLASTS(ALTERED TO GRAY-GREEN AT EDGES)
WHICH SOMETIMES GRADE INTO FINE-GRAINED MEDIUM-GRAY
(2.5Y 5/0) APHYRIC BASALT WHICH IS GENERALLY ALTERED
TO GRAY-LIGHT BROWN(10YR 6/2)-THERE ARE SOME PCES
WHICH HAVE BUFF COLORED LITHIFIED LIMESTONE MATRIX
(7.5YR 7/2),PCES 16A-17 ARE DARK GRAY(5Y 4/0)
APHYRIC BASALT WITH BLACK APHANITIC UPPER MARGIN & A
NARROW GRAY-BROWN(10YR 4/2) VARIOLITIC ZONE;
Vesicles : PCES 1-15 ARE SPARSELY VESICULAR;
Replacement: PALAGONITE
Minerals Replaced: GLASS
ANGULAR ALT.GLS FRAGMENTS IN PCES 1-15;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 428.00
Core: 29 Top of Core Depth (m) : 423.50
Sect: 3 Top of Section Depth(m): 426.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
INTERPILLOW BRECCIA;
Piece No. : PCES 1 (2-5), 2 (6-10), 3A (12-14), 3B (15-22),
4A (23-28), 4B (29-35), 5A (36-40), 5B (36-40),
5C (40-54), 6A (55-58), 6B (58-64), 7A (66-70),
7B (70-74), 8 (75-80), 9 (82-87), 10A (88-95),
10B (95-105), 11 (107-115), 12A (115-119),
12B (120-125), 12C (124-126), 12D (125-130),
13A (132-137), 13B (136-147);
Texture : APHYRIC,SIMILAR TO CORES 29-1 & 29-2;
Structure : PILLOW BASALT;
Alteration : MOD
Comments : PCE 5C IS APHYRIC BASALT WITH GREEN(10G N8/2)
DISCOLORED LIMESTONE MATRIX & GLASS FRAGMENTS SET
WITHIN & ALSO IRREGULAR BLACK PATCHES,PCES 6A-6B ARE
APHYRIC BASALT THAT IS A LIGHTER SHADE OF GREEN THAN
PCE 5C;
Vesicles :
Location: Filling: CALCITE
PCE 5C;
Replacement: CALCITE
CALCITE FILLS VESICLES OF PCE 5C;
Leg : 82 Top/Bottom Interval(mm): 0/ 900 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 428.90
Core: 29 Top of Core Depth (m) : 423.50
Sect: 4 Top of Section Depth(m): 428.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
INTERPILLOW BRECCIA;
Piece No. : PCES 1 (2-4), 2 (7-11), 3 (15-28), 4A (29-34),
4B (35-40), 4C (40-50), 5A (51-69), 5B (69-71),
6 (71-90);
Texture : PCES 4B-6 FINE-GRAINED APHYRIC BASALT,SAME AS CORE
29-2,VARIOLITIC ZONE IN PCE 4C;
Structure : PILLOW BASALT;
Alteration : MOD
PCES 1-4C,TOP 10CM OF PCE 5A;
FRESH TO MOD
PCES 5B-6,LOWER 9CM OF PCE 5A;
Comments : PCES 1-4A INTERPILLOW BRECCIA WITH SPARRY CALCITE
CEMENT;
Vesicles : Size(mm): Percent: 5-10
Location: Filling: CALCITE
OCCASIONAL LARGE CALCITE-FILLED VESICLES IN PCE 3;
Size(mm): 1-2 Percent: 5
Location: Filling: CALCITE
VESICULAR ZONE WITHIN VARIOLITIC ZONE IN PCE 4C
WHICH ARE EITHER UNFILLED OR FILLED WITH CALCITE;
Replacement: CALCITE
SPARRY CALCITE CEMENTS INTERPILLOW BRECCIA OF PCES
1-4A,CALCITE FILLS VESICLES IN PCES 3+4C;
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 433.95
Core: 30 Top of Core Depth (m) : 432.50
Sect: 1 Top of Section Depth(m): 432.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
INTERPILLOW BRECCIA;
Piece No. : PCES 1 (1-9), 2 (12-16), 3A (18-21), 3B (22-26),
4 (26-30), 5 (32-44), 6 (45-50), 7 (51-59),
8A (59-65), 8B (66-70), 9A (71-79), 9B (80-90),
9C (91-101), 9D (100-110), 9E (110-130),
9F (130-135), 9G (135-145);
Texture : PCES 1-8A APHYRIC APHANITIC BASALT GRADING TO
VARIOLITIC BASALT FORMING BROKEN PILLOW FRAGMENTS &
SOME ANGULAR GLASS FRAGMENTS PRESENT,PCES 8B-9G
FINE-GRAINED APHYRIC BASALT WITH PILLOW MARGINS
GRADING THROUGH VARIOLITIC & APHANITIC ZONES TO
GLASS;
Structure : PILLOW BASALT,PCES 8B-9G FRACTURED;
Alteration : MOD
ANGULAR GLASS FRAGMENTS OF PCES 1-8A ARE LARGELY
PALAGONITIZED,PCES 8B-9G ARE ALTERED ALONG
FRACTURES;
Comments : PCES 1-8A BLACK APHANITIC BASALT GRADING TO GRAYISH-
BROWN(10YR 6/2) VARIOLITIC BASALT WITH A MATRIX OF
SMALLER(<20MM) ANGULAR GLASS FRAGMENTS CEMENTED BY
CLEAR SPARRY CALCITE,PCES 8B-9G ARE DARK GRAY
(2.5Y 4/0) BASALT ALTERED TO GRAY-BROWN(10YR 5/2)
ALONG FRACTURES,NOTE SLIGHT DARKENING OF FINE-
GRAINED BASALT FROM CORE 29 TO CORE 30(2.5Y 5/0-
2.5Y 4/0);
Vesicles : Size(mm): Percent: 5
Location: Filling: CALCITE IRR
Shape : EGULAR
IN INTERVAL 75-85CM VESICLES MAKE UP 5% OF ROCK &
ARE CALCITE-FILLED(ID CALCITE UNCERTAIN),VESICLES
ARE SCATTERED ELSEWHERE;
Replacement: CALCITE
CLEAR SPARRY CALCITE CEMENTS INTERPILLOW BRECCIA,
CALCITE FILLS SOME VESICLES (ID CALCITE
UNCERTAIN);
ZEOLITE
NEEDLES OF ZEOL(?) IN CALCITE;
PALAGONITE
Minerals Replaced: GLASS
ANGULAR GLASS FRAGMENTS PALAGONITIZED IN PCES
1-8A;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 558 Sample Midpoint (m) : 435.50
Core: 30 Top of Core Depth (m) : 432.50
Sect: 2 Top of Section Depth(m): 434.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
INTERPILLOW BRECCIA;
Piece No. : PCES 1A (1-5), 1B (2-15), 2 (16-21), 3 (22-26),
4 (27-31), 5A (32-41), 5B (41-58), 5C (59-62),
5D (62-67), 5E (67-71), 6 (74-77), 7 (80-86),
8 (86-94), 9 (94-100), 10 (101-110), 11 (113-118),
12 (120-131), 13 (131-140), 14 (143-149);
Texture : PCES 1A-3 FINE-GRAINED APHYRIC,PCES 4-5E HAS
VARIOLITIC EDGES,PCES 7-14 ARE FINE-GRAINED & GRADE
DOWN THROUGH VARIOLITIC ZONE INTO APHANITIC ZONE;
Structure : PILLOW BASALT,CALCITE-FILLED FRACTURES IN PCES
1A-5E+7-14;
Alteration : MOD
Comments : PCES 1A-3 ARE MEDIUM-GRAY(7.5YR N5/0),PCES 4-5E ARE
MEDIUM-BROWNISH-GRAY(2.5Y N5/0) WITH YELLOWISH-BROWN
VARIOLITIC EDGES(2.5Y 6/2),PCE 6 IS INTERPILLOW
BRECCIA IN CALCITE MATRIX CONTAINING MANY ANGULAR
GLASS CLASTS SOME OF WHICH ARE ALTERED TO YELLOW-
BROWN & GREEN CLAY.MINS;
Vesicles : Size(mm): Percent: 5
Location: Filling:
Shape : ROUND
PCES 4-5E HAVE EMPTY ROUND VESICLES;
Size(mm): TO 8 Percent:
Location: Filling: CALCITE,CLAY.MIN
Shape : IRREGULAR
PCES 4-5E HAVE SOME IRREGULAR VESICLES FILLED WITH
CALCITE & GREEN CLAY.MINS;
Replacement: CALCITE
CALCITE IN FRACTURES THROUGHOUT,PCE 6 HAS CALCITE
MATRIX,CALCITE FILLS SOME VESICLES IN PCES 4-5E;
CLAY MINERALS
GREEN CLAY.MINS FILL SOME VESICLES IN PCES 4-5E;
CLAY MINERALS
Minerals Replaced: GLASS
PCE 6 HAS ANGULAR GLASS FRAGMENTS ALTERED TO
YELLOW-BROWN & GREEN CLAY.MINS;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 437.00
Core: 30 Top of Core Depth (m) : 432.50
Sect: 3 Top of Section Depth(m): 435.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
BRECCIA;
Piece No. : PCES 1 (0-4), 2 (8-12), 3 (15-29), 4 (31-36),
5 (38-46), 6 (50-54), 7 (55-61), 8 (64-74),
9 (75-88), 10A (90-97), 10B (94-108), 11 (109-117),
12 (118-127), 13 (128-132), 14 (133-138),
15 (140-147);
Texture : APHYRIC,SOME APHANITIC BASALT RIMMED WITH GLASS,
PCES 3-6 ARE ONE PILLOW UNIT GRADING FROM GLASS TO
APHANITIC BASALT TO VARIOLITIC BASALT TO APHYRIC
BASALT WITH INVERSE SEQUENCE FROM PCES 8-12,PCE 12
GRADES FROM APHYRIC BASALT THRU VARIOLITIC TEXTURE
TO GLASSY BOTTOM,SIMILAR TO CORES 30-1 & 30-2;
Structure : PILLOW BASALT,FRACTURED,PCES 10-11 HAVE CALCITE
RINDS BECOMING THICKER & MORE INVOLVED;
Alteration : MOD
ALTERATION ALONG FRACTURES;
Comments : PCES 1-2+13-15 INTERPILLOW GLASS/CALCITE BRECCIA
(SPARRY CALCITE MATRIX) WITH GLASS FRAGMENTS RANGING
FROM 2MM TO 40MM IN LENGTH,PILLOWS ARE DARK GRAY
(2.5Y N4/0) GRADING TO GRAY-BROWN(10YR 5/2) ALONG
FRACTURES TO BLACK APHANITIC BASALT;
Vesicles :
Location: Filling: CALCITE,CLAY.MIN
Shape : IRREGULAR
MAJORITY OF VESICLES IN PCES 8+9 APPEAR EMPTY NEAR
TOP OF SEGMENT TO MOSTLY CALCITE &/OR CLAY.MIN-
FILLED;
Replacement: CALCITE
BRECCIA HAS CALCITE MATRIX(SPARRY ON PCES 1-2),
CALCITE FILLS SOME VESICLES,CALCITE RINDS ON PCES
9-11;
CLAY MINERALS
CLAY.MINS FILL SOME VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/1200 Analyst: Drake, N.
Hole: 558 Sample Midpoint (m) : 438.20
Core: 30 Top of Core Depth (m) : 432.50
Sect: 4 Top of Section Depth(m): 437.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
INTERPILLOW BRECCIA;
Piece No. : PCES 1 (1-5), 2 (6-18), 3 (20-27), 4A (28-39),
4B (39-55), 4C (55-69), 4D (69-81), 4E (80-88),
5 (89-95), 6 (96-102), 7A (103-110), 7B (110-119);
Texture : APHYRIC,GLASS RIM ON PCE 1,PCES 2-3 GRADE FROM GLASS
RIM TO APHANITIC BASALT TO FINE-GRAINED BASALT,PCES
4A-7A MAKE UP ONE PILLOW WITH NO TOP & VARIOLITIC
LOWER EDGE;
Structure : PILLOW BASALT,CALCITE RIM WITH GLASS ON PCE 1;
Alteration : MOD
GLASS CLASTS IN PCE 7B ARE ALTERED;
Comments : MEDIUM-GRAY BASALT(2.5Y N5/0),GLASS RIMS ON PCE 7B
ARE ALTERED TO YELLOW-BROWN,PCES 7A-7B INTERPILLOW
BRECCIA;
Vesicles :
Location: Filling: CALCITE
PCES 2-3 HAVE EMPTY VESICLES IN VARIOLITIC ZONE
& CALCITE-FILLED VESICLES IN FINE-GRAINED ZONE;
Replacement: CALCITE
BRECCIA HAS CALCITE MATRIX,CALCITE RIM ON PCE 1,
CALCITE FILLS SOME VESICLES;
CLAY MINERALS
Minerals Replaced: GLASS
YELLOW-BROWN CLAY.MIN IN PCES 7A-7B ARE ALT.GLS
CLASTS;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 443.00
Core: 31 Top of Core Depth (m) : 441.50
Sect: 1 Top of Section Depth(m): 441.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (2-6), 2 (8-15), 3 (17-23), 4 (25-34),
5A (36-50), 5B (51-59), 5C (60-69), 5D (69-90),
5E (91-108), 6 (109-125), 7 (126-135), 8 (137-150);
Texture : APHYRIC,GLASS IN PCES 1-2+4+5A+6,PCES 2-3+5A+6 HAVE
VARIOLITIC TEXTURE WITH VARIOLITES <2MM;
Structure : PILLOW BASALT,CALCITE-FILLED FRACTURES COMMON;
Alteration : MOD
PCES 1-4+6-8,TOP 11CM OF PCE 5A,GLASS ALTERED;
FRESH TO MOD
PCES 5B-5E,BOTTOM 4CM OF PCE 5A;
Comments : DARK-GRAY BASALT(2.5Y N4);
Vesicles :
Location: Filling:
Shape : ROUND
PCES 2-4 EMPTY ROUND VESICLES OCCUR THROUGHOUT;
Location: Filling: CLAY.MIN,CALCITE
Shape : ROUND
PCES 7-8 HAVE CALCITE & CLAY.MIN-FILLED VESICLES,
ONE LARGE VESICLE OCCURS AT BOTTOM OF PCE 8 &
FILLED WITH GREEN CLAY.MIN(50%) & CALCITE(50%) &
MEASURES 20 BY 3CM,VESICLE ABUNDANCE DECREASES
DOWNCORE;
Replacement: CALCITE
CALCITE FILLS FRACTURES,CALCITE FILLS SOME
VESICLES IN PCES 7-8 WITH ONE LARGE VESICLE AT
BOTTOM OF PCE 8 HALF-FILLED WITH CALCITE;
CLAY MINERALS
CLAY.MINS FILL SOME VESICLES & HALF-FILLS LARGE
VESICLE IN PCE 8(GREEN CLAY.MINS);
PALAGONITE
Minerals Replaced: GLASS
GLASS IN PCES 1-2+4+5A+6 IS PARTLY ALTERED TO
PALAG;
Leg : 82 Top/Bottom Interval(mm): 0/1350 Analyst: Drake, N.
Hole: 558 Sample Midpoint (m) : 444.35
Core: 31 Top of Core Depth (m) : 441.50
Sect: 2 Top of Section Depth(m): 443.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
INTERPILLOW BRECCIA;
Piece No. : PCES 1A (1-16), 1B (15-23), 1C (23-29), 1D (29-31),
2 (32-40), 3A (41-48), 3B (48-50), 3C (51-55),
4 (56-70), 5 (73-84), 6 (85-92), 7 (93-100),
8 (110-120), 9 (122-135);
Texture : APHYRIC,PCES 1A-1D FINE-GRAINED BASALT WITH
VARIOLITIC LOWER EDGE,PCES 2-4+6-9 HAVE VARIOLITIC
EDGES;
Structure : PILLOW BASALT,CALCITE-FILLED FRACTURES,CAVITY FILLED
WITH DRUSY CALCITE IN PCE 5;
Alteration : MOD
Comments : PCES 1A-1D MED-GRAY(2.5Y N5/0) BASALT WITH MED-
YELLOW-BROWN(10YR 6/2) VARIOLITIC LOWER EDGE,PCE 3A
HAS GLASS RIM WITH CALCITE MATRIX,PCE 5 IS INTER-
PILLOW BRECCIA MADE UP OF GLASS CLASTS WITH YELLOW/
ORANGE RIMS IN CALCITE MATRIX;
Vesicles : Size(mm): Percent: 1
Location: Filling: CALCITE
Shape : IRREGULAR
PCES 1A-1D;
Size(mm): TO 4 Percent:
Location: Filling: CALCITE
EMPTY VESICLES BELOW VARIOLITIC EDGE IN PCES 6-9 &
CALCITE-FILLED IN INTERIOR OF PILLOW;
Replacement: CALCITE
CALCITE FILLS FRACTURES,CALCITE FILLS SOME
VESICLES IN PCES 1A-1D+6-9,CAVITY IN PCE 5 FILLED
WITH DRUSY CALCITE,INTERPILLOW BRECCIA HAS CALCITE
MATRIX,CALCITE WITH GLASS RIM IN PCE 3A;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 452.00
Core: 32 Top of Core Depth (m) : 450.50
Sect: 1 Top of Section Depth(m): 450.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (2-8), 2 (12-21), 3 (22-32), 4 (33-45),
5 (47-58), 6 (60-70), 7A (71-85), 7B (85-96),
8A (98-112), 8B (113-137), 9 (138-149);
Texture : APHYRIC,CHILLED GLASS RINDS OCCUR IN PCES 4-5+9 &
CLOSE TO THESE RINDS TO THE INTERIOR OF PILLOWS
OCCURS VARIOLITIC TRANSITION FROM VITRIC TO FINE-
GRAINED XTLLN BASALT;
Structure : PILLOW BASALT,FRACTURES & VEINS FILLED WITH CALCITE;
Alteration : FRESH TO MOD
PCES 5+6+7B-9,UPPER 2CM OF PCE 1,LOWER 7CM OF PCE
4,LOWER 4CM OF PCE 7A;
MOD
PCES 2-3,LOWER 4CM OF PCE 1,UPPER 5CM OF PCE 4,
UPPER 8CM OF PCE 7A;
Comments : DARK-GRAY(2.5Y, N4/0) BASALT;
Vesicles : Size(mm): TO 8 Percent:
Location: Filling: CLAY.MIN,CALCITE
Shape : ROUND,IRREG
VESICLES COMMON & PARTLY ROUND(TO 2MM) & PARTLY
IRREGULAR(TO 8MM),IN THE INTERIOR OF THE PILLOW
PCES 7B TO UPPER PART OF PCE 8B VESICLES ARE RARE;
Replacement: CALCITE
CALCITE FILLS FRACTURES & VEINS & VESICLES;
CLAY MINERALS
CLAY.MINS FILL SOME VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Brannon, J.
Hole: 558 Sample Midpoint (m) : 453.50
Core: 32 Top of Core Depth (m) : 450.50
Sect: 2 Top of Section Depth(m): 452.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-4), 2 (6-10), 3 (12-18), 4 (20-25),
5 (28-33), 6A (35-42), 6B (42-49), 7 (50-63),
8 (65-70), 9 (74-77), 10 (80-85), 11 (87-92),
12 (95-101), 13 (103-109), 14 (112-119),
15 (122-127), 16A (129-135), 16B (137-145),
16C (145-150);
Texture : PCES 1+7-10+16A HAVE CHILLED MARGINS,PCES 2-15 ARE
VARIOLITIC,PCES 16A-16C ARE FINE-GRAINED APHYRIC
BASALT;
Structure : PILLOW BASALT,PCES 16A-16C HAVE MANY CALCITE-FILLED
FRACTURES;
Comments : PCES 2-15 VARIOLITIC BASALT IS DARK-GRAY(2.5Y, N4/0)
WITH BROWN VARIOLES,PCES 9-10 HAVE CALCITE BETWEEN
BROKEN PCES OF GLASS;
Vesicles : Size(mm): <1 Percent: 2
Location: Filling: CALCITE
Shape : ROUND
PCES 6-7+12;
Size(mm): <1 Percent: 2
Location: Filling:
Shape : ROUND
PCES 2-5+8+12+14-15;
Replacement: CALCITE
CALCITE VEINS IN PCE 1,PCES 9-10 HAVE CALCITE
BETWEEN BROKEN PCES OF GLASS,CALCITE FILLS
FRACTURES IN PCES 16A-16C,CALCITE-FILLED VESICLES
IN PCES 6-7+12;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 455.00
Core: 32 Top of Core Depth (m) : 450.50
Sect: 3 Top of Section Depth(m): 453.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (2-8), 2 (11-16), 3 (17-22), 4A (24-34),
4B (35-48), 4C (49-65), 4D (64-74), 5 (76-79),
6 (83-86), 7 (91-95), 8 (97-105), 9 (108-111),
10 (117-120), 11 (122-126), 12A (128-130),
12B (131-134), 13 (136-145), 14 (146-150);
Texture : APHRYIC,FINE-GRAINED,CHILLED PILLOW MARGINS IN PCES
2+5-6 WHICH IS ALWAYS ACCOMPANIED BY A VARIOLITIC
TRANSITION ZONE;
Structure : PILLOW BASALT,WHOLE SECTION IS STRONGLY FRACTURED &
VEINS ARE FILLED WITH CALCITE;
Alteration : FRESH TO MOD
GLASS IS FRESH;
Comments : GRAY(2.5YR,N5/0) BASALT;
Vesicles : Size(mm): TO 3.5 Percent:
Location: Filling:
Shape : ROUND
Size(mm): TO 5 Percent: RARE
Location: Filling:
Shape : IRREGULAR
Replacement: CALCITE
CALCITE VEINS;
Leg : 82 Top/Bottom Interval(mm): 0/1400 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 456.40
Core: 32 Top of Core Depth (m) : 450.50
Sect: 4 Top of Section Depth(m): 455.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
BRECCIA;
Piece No. : PCES 1A (2-7), 1B (5-11), 2A (13-17), 2B (18-23),
3 (25-31), 4 (33-40), 5 (43-48), 6 (50-57),
7 (58-64), 8 (66-73), 9 (77-83), 10A (85-90),
10B (92-97), 11A (100-102), 11B (102-112),
12A (113-118), 12B (118-127), 12C (128-140);
Texture : APHYRIC,PCES 1A-8 VARIOLITIC WITH CHILLED MARGINS IN
PCES 2+6,PCES 9-12C FINE-GRAINED;
Structure : PILLOW BASALT,FRACTURES IN PCES 9-12C CEMENTED WITH
CALCITE;
Alteration : FRESH TO MOD
PCES 1A-8;
EXT
PCE 9;
MOD
PCES 10A-12C,ALTERATION ALONG FRACTURES;
Comments : PCES 1A-8 DARK-GRAY(2.5YR,N4/0),PCES 9-12C ARE GRAY
(2.5YR,N5/0),PCE 7 IS HYALOCLASTITE(CALCITE CEMENTED
GLASS BRECCIA),BREAK(?) BETWEEN PCES 8 & 9-
END OF PILLOW LAVAS;
Vesicles : Size(mm): TO 1.5 Percent:
Location: Filling:
Shape : ROUND
PCES 1A-8 HAVE COMMON EMPTY VESICLES;
Size(mm): Percent: RARE
Location: Filling: CLAY.MIN
Shape : ROUND
PCES 9-12 HAS RARE ROUND VESICLES FILLED WITH
CLAY.MINS(?);
Replacement: CALCITE
CALCITE CEMENTS GLASS BRECCIA OF PCE 7,FRACTURES
IN PCES 9-12C ARE CEMENTED WITH CALCITE;
CLAY MINERALS
ID CLAY.MIN UNCERTAIN-FILLS VESICLES IN PCES
9-12C;
Leg : 82 Top/Bottom Interval(mm): 0/1200 Analyst:
Hole: 558 Sample Midpoint (m) : 457.70
Core: 32 Top of Core Depth (m) : 450.50
Sect: 5 Top of Section Depth(m): 456.50
LITHOLOGY: APHYRIC BASALT;
MASSIVE BASALT;
Piece No. : PCES 1A (0-17), 1B (17-24), 1C (24-38), 1D (38-44),
1E (44-59), 2A (62-65), 2B (65-73), 3A (75-82),
3B (83-93), 3C (93-97), 4A (100-107), 4B (107-114),
4C (109-118), 4D (114-117);
Texture : APHYRIC,FINE-GRAINED,MESOSTAS(?);
Structure : MASSIVE BASALT,FRACTURES & VEINS FILLED WITH
CALCITE;
Alteration : MOD
FREQUENT FINE TRACES(HEALED FRACTURES?) ALTERED
BROWN & FINE MOTTLED BROWN ALTERATION OF
MESOSTAS(?);
Comments : GRAY(2.5YR N5/0) BASALT,BROWN & MOTTLED BROWN
ALTERATION OF MESOSTAS(?);
Vesicles : Size(mm): Percent: 0
Replacement: CALCITE
CALCITE VEINS & FRACTURES;
Leg : 82 Top/Bottom Interval(mm): 0/1350 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 460.85
Core: 33 Top of Core Depth (m) : 459.50
Sect: 1 Top of Section Depth(m): 459.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-5), 2 (7-10), 3 (14-22), 4 (25-28),
5 (33-40), 6 (40-52), 7 (54-58), 8 (60-66),
9A (68-85), 9B (85-96), 10 (98-103), 11 (104-107),
12 (109-113), 13 (115-120), 14 (122-126),
15 (128-135);
Texture : PCES 1-4 APHYRIC BASALT WHICH GRADES THRU VARIOLITIC
BASALT TO APHANITIC BASALT RIMMED WITH GLASS,PCES
8-10 HAS GLASS ON TOP PCE GRADING INTO APHANITIC
APHYRIC BASALT THEN VARIOLITIC ZONE THEN APHYRIC
BASALT,PCES 11-12 ARE APHYRIC BASALT WITH ONE PCE
WITHIN PCE 12 HAVING A DEVT.GLS RIND,PCES 13-15
APHYRIC BASALT;
Structure : PILLOW BASALT;
Alteration : MOD
DEVT.GLS RIND WITHIN PCE 12;
Comments : PCES 1-4 ARE LIGHT GRAY-BROWN(10YR 6/2) GRADING INTO
BLACK APHANITIC BASALT,PCES 8-10 HAVE BLACK
APHANITIC BASALT WHICH GRADES THRU GRAY-BROWN
VARIOLITIC ZONE THEN DARK-GRAY(2.5Y 4/0) BASALT,PCES
11-12 ARE DARK GRAY APHYRIC BASALT,PCE 5 IS BRECCIA
MADE UP OF LARGE GLASS FRAGMENTS(3MM-40MM LONG) IN
CALCITE MATRIX WITH MORE GLASS THAN CEMENT;
Vesicles :
Location: Filling: CALCITE
Shape : IRREGULAR
MAINLY EMPTY ABOVE VARIOLITIC ZONE,CALCITE-FILLED
BELOW THE VARIOLITIC ZONE THRU APHYRIC BASALT;
Replacement: CALCITE
CALCITE MATRIX IN PCE 5,CALCITE FILLS IRREGULAR
VESICLES BELOW VARIOLITIC ZONE;
UNIDENTIFIED
Minerals Replaced: GLASS
DEVT.GLS RIND ON PCE WITHIN PCE 12;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 462.50
Core: 33 Top of Core Depth (m) : 459.50
Sect: 2 Top of Section Depth(m): 461.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (1-10), 1B (7-20), 2A (20-24), 2B (24-26),
3 (27-37), 4 (39-42), 5 (44-48), 6 (49-61),
7 (62-79), 8 (80-85), 9 (86-90), 10 (91-98),
11A (98-102), 11B (102-111), 12 (111-121),
13 (121-140), 14 (142-149);
Texture : PILLOW SEQUENCE CONSISTING OF FINE-GRAINED APHYRIC
BASALT GRADING INTO VARIOLITIC BASALT THEN APHANITIC
BASALT ADJACENT TO PILLOW RIMS & FINALLY BASALT
GLASS;
Structure : PILLOW BASALT,CALCITE VEINS WITHIN GLASS;
Alteration : MOD
FRESH BASALT GLASS WITH ONLY MOD PALAGONITIZATION
AROUND EDGES;
Comments : BASALT IS GENERALLY WEATHERED DARK GRAYISH-BROWN
(10YR 4/2),VARIOLITIC BASALT PALE BROWN(10YR 6/3),
BLACK APHANITIC BASALT ADJACENT TO PILLOW RIMS,BLACK
BASALTIC GLASS,WHITE CALCITE;
Vesicles : Size(mm): TO 5 Percent:
Location: Filling: CALCITE
Shape : IRREGULAR
OCCASIONAL LARGE IRREGULAR CALCITE-FILLED
VESICLES;
Size(mm): 1 Percent: 5
Location: Filling: CALCITE,CLAY.MIN
SMALL VESICLES MAY BE CONCENTRATED ADJACENT TO
VARIOLITIC ZONES & MAY BE FILLED OR PARTLY FILLED
WITH CALCITE OR BLUISH-GRAY CLAY.MINS;
Replacement: CALCITE
CALCITE FILLS SOME VESICLES,CALCITE VEINS WITHIN
GLASS;
CLAY MINERALS
DARK BLUISH-GRAY CLAY.MINS PARTLY FILLS SOME
VESICLES;
PALAGONITE
Minerals Replaced: GLASS
GLASS IS MOD PALAGONITIZED ALONG EDGES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 464.00
Core: 33 Top of Core Depth (m) : 459.50
Sect: 3 Top of Section Depth(m): 462.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-4), 2 (7-11), 3 (12-13), 4A (15-21),
4B (21-32), 4C (32-37), 4D (35-41), 4E (41-49),
4F (49-50), 5 (53-56), 6 (59-68), 7 (70-76),
8 (77-82), 9A (84-98), 9B (97-110), 9C (108-124),
9D (124-148);
Texture : BASALT SIMILAR TO CORE 33-2 EXCEPT FOR PCES 9C+9D
WHICH ARE FINE-GRAINED;
Structure : PILLOW BASALT,CALCITE VEINS,CALCITE PRESENT ALONG
FRACTURES;
Alteration : MOD
FRESH
PCE 9D;
Comments : PCES 9C-9D DARK GRAY BASALT(7.5YR N4/0);
Replacement: CALCITE
CALCITE VEINS,CALCITE PRESENT ALONG FRACTURES;
Leg : 82 Top/Bottom Interval(mm): 0/ 400 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 464.40
Core: 33 Top of Core Depth (m) : 459.50
Sect: 4 Top of Section Depth(m): 464.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (2-9), 2 (11-16), 3 (16-20), 4 (21-26),
5 (28-33), 6 (36-40);
Texture : APHYRIC;
Structure : PILLOW BASALT,CALCITE RIMS EDGES OF MOST PCES,
SEVERAL PCES VEINED;
Alteration : MOD
Comments : DARK GRAY BASALT(2.5Y 4/0),PCE 5 MADE UP OF SEVERAL
PCES;
Vesicles : Size(mm): <1 Percent:
SCATTERED VESICLES;
Size(mm): TO 8 Percent:
Location: Filling: CALCITE
PCE 3 HAS ONE LARGE CALCITE-FILLED VESICLE;
Replacement: CALCITE
CALCITE RIMS MOST PCES,CALCITE FILLS LARGE VESICLE
IN PCE 3;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 470.00
Core: 34 Top of Core Depth (m) : 468.50
Sect: 1 Top of Section Depth(m): 468.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-9), 1B (9-13), 2 (15-20), 3A (22-38),
3B (38-41), 3C (41-45), 3D (45-58), 3E (58-70),
4A (71-73), 4B (73-83), 4C (83-91), 4D (92-96),
5 (97-101), 6A (102-107), 6B (107-119), 7 (120-130),
8 (137-141), 9 (142-150);
Texture : APHYRIC,PCES 1A+1B+4D+6A ARE APHANITIC WITH GLASS
RIMS WHICH GRADE TO VARIOLITIC BASALT MOVING INWARDS
FROM PILLOW MARGINS,PCES 2-4C+5+6B-9 FINE-GRAINED
PILLOW INTERIORS;
Structure : PILLOW BASALT,CALCITE VEINLETS PRESENT,FRACTURES;
Alteration : MOD
FINE-GRAINED BASALT IS ALTERED ESPECIALLY ADJACENT
TO FRACTURES;
Comments : BLACK APHYRIC APHANITIC BASALT,VARIOLITIC BASALT IS
LIGHT BROWNISH-GRAY(10YR 6/2),FINE-GRAINED APHYRIC
BASALT OF PILLOW INTERIORS IS DARK GRAY(7.5YR N4/0)
GRADING TO BROWN(7.5YR 4/4) WITH ALTERATION
ESPECIALLY ADJACENT TO FRACTURES;
Vesicles : Size(mm): 1-5 Percent: 5
Location: Filling: CLAY.MIN
Shape : IRREGULAR
SCATTERED IRREGULAR 5MM CALCITE-FILLED VESICLES,
SMALL(1MM) VESICLES FILLED WITH BLUISH-GRAY OR
GREEN CLAY.MINS CONCENTRATED(TO 5%) JUST INSIDE
VARIOLITIC ZONES;
Replacement: CALCITE
CALCITE FILLS SOME VESICLES,CALCITE VEINLETS;
CLAY MINERALS
BLUISH-GRAY OR GREEN CLAY.MINS FILL SOME VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 479.00
Core: 35 Top of Core Depth (m) : 477.50
Sect: 1 Top of Section Depth(m): 477.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-6), 2 (7-16), 3 (18-22), 4A (27-28),
4B (24-33), 4C (28-34), 4D (33-38), 5A (41-43),
5B (43-46), 5C (48-50), 5D (52-55), 6 (58-69),
7 (71-80), 8 (82-88), 9 (89-99), 10 (100-112),
11A (114-123), 11B (123-125), 11C (124-134),
11D (133-135), 12 (137-140), 13 (144-148);
Texture : APHYRIC,PCES 1-4C+6-7+11A-11D FINE-GRAINED,PCES 4D+
5D+7-8+10+12-13 APHANITIC GRADING TO VARIOLITIC
BASALT,PCES 5A-5B+9+13 BASALT GLASS;
Structure : PILLOW BASALT,CALCITE VEINS THROUGHOUT & IN GREATER
ABUNDANCE THAN IN PREVIOUS CORES;
Alteration : MOD
GLASS PALAGONITIZED,BASALT ALTERED;
Comments : FINE-GRAINED BASALT IS GRAYISH-BROWN(10YR 5/2),BLACK
APHANITIC BASALT,BLACK BASALT GLASS;
Replacement: CALCITE
CALCITE VEINS;
PALAGONITE
Minerals Replaced: GLASS
BASALT GLASS PALAGONITIZED;
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 480.45
Core: 35 Top of Core Depth (m) : 477.50
Sect: 2 Top of Section Depth(m): 479.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-9), 2A (11-23), 2B (23-29), 2C (29-31),
2D (31-38), 2E (37-42), 2F (43-58), 3 (60-65),
4A (66-69), 4B (70-78), 5A (79-86), 5B (87-95),
6A (96-110), 6B (111-117), 6C (118-124),
6D (124-135), 7A (137-141), 7B (141-144);
Texture : APHYRIC,PCES 2B-2F+6A-6B & LOWER 7CM OF PCE 2A FINE-
GRAINED AS IN CORE 35-1,PCES 1+3+6C-7B & TOP 8CM OF
PCE 2A,PCES 1+3+5A+6C-6D HAVE BASALT GLASS;
Structure : PILLOW BASALT,GLASS VEINED WITH CALCITE;
Alteration : MOD
INTERVALS 33-37+107-115 BASALT IS FRESH(?),BASALT
GLASS MOD ALTERED TO PALAG;
Replacement: CALCITE
CALCITE VEINS IN BASALT GLASS
PALAGONITE
Minerals Replaced: GLASS
BASALT GLASS PALAGONITIZED;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 558 Sample Midpoint (m) : 482.00
Core: 35 Top of Core Depth (m) : 477.50
Sect: 3 Top of Section Depth(m): 480.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
INTERPILLOW BRECCIA;
Piece No. : PCES 1A (1-8), 1B (8-10), 2 (12-15), 3A (18-26),
3B (26-37), 4 (40-46), 5 (48-56), 6A (58-63),
6B (63-67), 6C (68-71), 6D (70-72), 6E (72-75),
7A (78-86), 7B (86-95), 8A (98-99), 8B (99-107),
8C (107-113), 8D (112-115), 9A (118-123),
9B (122-131), 9C (131-142), 9D (142-150);
Texture : PCES 2-5+7-8 ARE PCES OF FINE-GRAINED APHYRIC BASALT
WITH NO VARIOLITIC EDGES(EXCEPT AT 18-20CM),PCES 9A-
9C IS A SINGLE PILLOW OF FINE-GRAINED APHYRIC BASALT
WITH VARIOLITIC EDGE AT TOP OF PCE 9A & BOTTOM OF PC
9C GRADING INTO APHANITIC BASALT,PCE 9D IS BEGINNING
OF 2ND PILLOW WITH APHANITIC BASALT GRADING THRU
VARIOLITIC EDGE TO BASALT INTERIOR;
Structure : PILLOW BASALT,CALCITE-FILLED FRACTURES;
Alteration : FRESH
PCES 1A-1B+8A-8D;
EXT
PCES 2-4+6A-6E+9A-9D,
MOD
PCES 5+7A-7B;
Comments : PCES 1A-1B+7A-7B INTERPILLOW BRECCIA COMPRISED OF
GLASS CLASTS IN CALCITE MATRIX,PCES 6A-6E INTER-
PILLOW BRECCIA OF BROWNISH-GRAY(10YR 6/2) BASALT
CLASTS & BLACK APHANITIC BASALT CLASTS IN CALCITE
MATRIX SOME WITH FINE BITS OF GLASS & BASALT GROUND
UP IN IT(PCES 6A+6C),PCES 2-5+7-8 HAVE FRESHER PARTS
THAT ARE GRAY(7.5YR N5/0) & MORE ALTERED PARTS ARE
LIGHT BROWNISH-GRAY(10YR N6/2),PCE 9A IS COMPRISED
OF GLASS WITH CALCITE INBETWEEN(BRECCIA?),PCES 9A-9C
ARE COMPRISED OF ALTERED GRAYISH-BROWN(10YR 5/2)
BASALT & BLACK APHANITIC BASALT,PCE 9D IS BLACK
APHANITIC BASALT;
Vesicles : Size(mm): 3 Percent: 2
Location: Filling: CLAY.MIN,CALCITE
Shape : ROUND
PCES 2-5+7-8 HAVE SOME VESICLES FILLED WITH
CLAY.MINS & SOME WITH CALCITE;
Size(mm): 2 Percent: 1
Location: Filling: CALCITE
Shape : ROUND,IRREG
PCE 9D HAS FILLED VESICLES;
Replacement: CALCITE
CALCITE-FILLED FRACTURES,CALCITE FILLS SOME
VESICLES IN PCES 2-5+7-8 & ALL VESICLES IN
PCE 9D,CALCITE MATRIX IN INTERPILLOW BRECCIA;
CLAY MINERALS
CLAY.MINS FILL SOME VESICLES IN PCES 2-5+7-8;
Leg : 82 Top/Bottom Interval(mm): 0/1150 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 483.15
Core: 35 Top of Core Depth (m) : 477.50
Sect: 4 Top of Section Depth(m): 482.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
HYALOCLASTITE BRECCIA;
Piece No. : PCES 1 (1-4), 2 (6-25), 3 (26-38), 4 (40-45),
5 (47-60), 6 (61-66), 7 (68-75), 8 (77-90),
9 (92-100), 10 (101-115);
Texture : PCES 1-2+4+8-10 ARE APHYRIC FINE-GRAINED BASALT;
Structure : PILLOW(?) BASALT;
Alteration : BASALT ALTERED(ONLY FRESH FROM 102-108CM),BRECCIA
COMPRISED OF CLASTS OF COMPLETELY PALAGONITIZED
GLASS & ANGULAR TO SUBROUNDED CLASTS ARE VARIABLY
ALTERED;
Comments : PCES 1-2+4+8-10 ARE DARK-GRAY(7.5YR N4/0) BASALT
GRADING TO BROWN(7.5YR 4/4),PCES 3-7 & HALF OF
INTERVAL 5-12CM & TOP 7CM OF PCE 8 ARE HYALOCLASTITE
BRECCIA COMPRISED OF ANGULAR & SUBROUNDED CLASTS OF
APHANITIC TO VARIOLITIC BASALT(<5CM) & GLASS WITH
MATRIX DOMINATED BY FINELY GROUND BASALTIC MATERIAL
WITH SUBORDINATE CALCITE;
Replacement: CALCITE
CALCITE SUBORDINATE IN MATRIX OF HYALOCLASTITE
BRECCIA;
PALAGONITE
Minerals Replaced: GLASS
CLASTS OF COMPLETELY PALAGONITIZED GLASS IN
HYALOCLASTITE BRECCIA;
Leg : 82 Top/Bottom Interval(mm): 0/1300 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 487.80
Core: 36 Top of Core Depth (m) : 486.50
Sect: 1 Top of Section Depth(m): 486.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
HYALOCLASTITE BRECCIA;
Piece No. : PCES 1 (1-3), 2 (4-18), 3A (19-24), 3B (25-31),
3C (32-37), 4A (38-40), 4B (40-46), 4C (46-50),
4D (49-53), 4E (54-59), 5 (60-69), 6A (70-76),
6B (74-80), 6C (80-85), 7 (88-91), 8 (94-98),
9 (100-108), 10A (109-114), 10B (114-117),
10C (117-122), 10D (123-125),10E (125-126);
Texture : PCES 1-2+10A-10E APHYRIC FINE-GRAINED BASALT;
Structure : PILLOW BASLT;
Alteration : MOD
PCES 1-2+10A-10E;
FRESH TO MOD
PCES 3A-9;
Comments : PCES 1-2+10A-10E GRAY(2.5Y N5/0) TO LIGHT BROWNISH-
GRAY(2.5Y N6/2) IN ALTERED PART,PCES 3A-9 ARE
HYALOCLASTITE BRECCIA CONSISTING OF ANGULAR TO SUB-
ROUNDED CLASTS OF MOSTLY PALAGONITIZED GLASS(<30MM)
& APHANITIC TO VARIOLITIC BASALT(<15MM) & BRECCIA IS
MOSTLY CEMENTED BY CALCITE BUT FINE-GRAINED MATRIX
OF BASALT ALTERATION PRODUCTS IS ALSO PRESENT;
Replacement: CALCITE
HYALOCLASTITE BRECCIA HAS CALCITE MATRIX;
PALAGONITE
Minerals Replaced: GLASS
PALAGONITIZED GLASS IN HYALOCLASTITE BRECCIA;
UNIDENTIFIED
UNIDENT.MINS OF BASALT ALTERATION PRODUCTS;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 558 Sample Midpoint (m) : 489.50
Core: 36 Top of Core Depth (m) : 486.50
Sect: 2 Top of Section Depth(m): 488.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-8), 1B (8-28), 1C (27-38), 2A (41-47),
2B (48-53), 3A (55-58), 3B (58-65), 4A (67-70),
4B (70-75), 4C (76-80), 5A (82-85), 5B (85-89),
5C (89-99), 5D (98-109), 5E (108-112), 6 (114-120),
7A (122-133), 7B (133-136), 8A (139-141),
8B (142-145), 8C (145-150);
Texture : SIMILAR TO BASALT PCES FOUND IN CORE 36-1;
Structure : PILLOW BASALT,HEAVY CALCITE VEINING THROUGHOUT;
Alteration : MOD
PCES 1A-1C+2B-3A+5A-8B;
EXT
PCES 2A+3B-4C+8C;
Vesicles : Size(mm): 7 Percent: 10
Location: Filling: CALCITE,CLAY.MIN
Shape : IRREGULAR
PCE 5C HAS IRREGULAR VESICLES FILLED WITH CALCITE
& SOME(1%) ARE FILLED WITH LIGHT YELLOWISH-BROWN
CLAY.MINS;
Replacement: CALCITE
CALCITE VEINING THROUGHOUT,CALCITE FILLS SOME
VESICLES IN PCE 5C;
CLAY MINERALS
LIGHT YELLOWISH-BROWN CLAY.MINS FILL SOME
VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/ 700 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 490.20
Core: 36 Top of Core Depth (m) : 486.50
Sect: 3 Top of Section Depth(m): 489.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1A (0-10), 1B (10-20), 2A (22-25), 2B (25-29),
3A (32-35), 3B (35-39), 3C (38-42), 4 (43-50),
5 (51-60), 6A (62-64), 6B (65-69);
Texture : APHYRIC,FINE-GRAINED,PCES 2B-3B APHANITIC TO
VARIOLITIC BASALT(VARIOLES TO 5MM);
Structure : VEINLETS FILLED WITH CALCITE,FRACTURED;
Alteration : MOD
PCES 1A-2B+3C-6B;
FRESH TO MOD
PCES 3A-3B,ALTERED ZONES ALONG FRACTURES THROUGH-
OUT;
Comments : BASALT VARIES IN COLOR FROM GRAY(2.5Y N5/0) TO LIGHT
BROWNISH-GRAY(2.5Y N6/2);
Replacement: CALCITE
VEINLETS FILLED WITH CALCITE;
Vesicles : Size(mm): Percent: 0
Leg : 82 Top/Bottom Interval(mm): 0/ 820 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 496.32
Core: 37 Top of Core Depth (m) : 495.50
Sect: 1 Top of Section Depth(m): 495.50
LITHOLOGY: BASALT BRECCIA;
HYALOCLASTITE BRECCIA;
LIMESTONE;
Piece No. : PCES 1A (1-9), 1B (9-18), 2A (20-23), 2B (23-26),
3A (28-36), 3B (36-39), 4 (41-47), 5 (50-53),
6A (56-60), 6B (60-65), 6C (66-70), 7 (73-76),
8 (78-81);
Comments : PCES 1A-1B ARE BASALT BRECCIA COMPRISED OF ANGULAR
CLASTS OF MOD TO EXT ALTERED ANGULAR APHYRIC BASALT
(COLOR IS GRAYISH-BROWN 10YR 5/2) WHICH 'SWIM' IN A
LIMESTONE MATRIX-SOME CAVITIES ARE CEMENTED WITH
CALCITE,PCES 2A-8 COMPRISED OF BROWNISH-WHITE
(1OYR 8/2) LIMESTONE WITH BLACK MN.OXIDE DENDRITES
WHICH ARE SCATTERED THROUGHOUT THE SEDIMENT WHICH IS
PARTLY INTERLAYERED BY BRECCIATED VOLCANIC GLASS
(HYALOCLASTITE) WITH THE GLASS MOSTLY ALTERED TO
BROWN CLAY.MINS,PCE 7 IS A CLAST OF CHILLED BASALT
GLASS WITH CLAYEY ALTERATION ALONG FRACTURES;
Alteration : MOD
PCE 1-3 & 6A-6B & 8;
FRESH TO MOD
PCES 5 & 6C;
Replacement: CALCITE
CALCITE FILLS CAVITIES IN PCES 1A-1B,
MANGANESE OXIDE
BLACK MN.OXIDE DENDRITES SCATTERED THROUGHOUT
LIMESTONE IN PCES 2A-8;
CLAY MINERALS
Minerals Replaced: GLASS
BROWN CLAY.MINS REPLACE GLASS IN PCES 2A-8;
CLAY MINERALS
CLAY.MIN ALTERATION ALONG FRACTURES IN PCES 2A-8;
Leg : 82 Top/Bottom Interval(mm): 820/1500 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 497.00
Core: 37 Top of Core Depth (m) : 495.50
Sect: 1 Top of Section Depth(m): 496.32
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 9 (83-85), 10 (86-92), 11 (94-99),
12 (100-103), 13 (105-108), 14 (110-113),
15 (104-108), 16 (108-122), 17 (122-125),
18 (126-134), 19A (135-142), 19B (141-150);
Texture : APHYRIC,FINE-GRAINED;
Alteration : FRESH
Comments : BASALT IS GRAY(7.5YR N5/0);
Vesicles : Size(mm): <1 Percent: RARE
Location: Filling: CLAY.MIN
Replacement: CLAY MINERALS
CLAY.MIN FILLS VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/ 480 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 504.98
Core: 38 Top of Core Depth (m) : 504.50
Sect: 1 Top of Section Depth(m): 504.50
LITHOLOGY: BASALT BRECCIA;
APHYRIC BASALT;
Piece No. : PCES 1 (1-4), 2 (7-10), 3 (11-13), 4 (16-18),
5 (21-26), 6 (28-32), 7 (33-37), 8 (38-43),
9 (44-46);
Texture : PCES 2+4-6+8-9 ARE PCES OF APHANITIC BASALT WITH
GRADES THRU VARIOLITIC TEXTURE TO ALTERED APHYRIC
BASALT & PROVINCE EXTENDING TO APHYRIC BASALT IS
RARE;
Alteration : MOD
APHYRIC BASALT ALTERED,MAJORITY OF GLASS FRAGMENTS
IN PCES 1+3+7 ARE SLIGHTLY ALTERED TO PALAG & ALSO
CLAY.MINS OBSERVED ALONG GLASS FRACTURES;
Comments : PCES 2+4-6+8-9 ARE DARK GRAY(2.5Y N4/0) APHANITIC
BASALT GRADING THRU TO LIGHT BROWNISH-GRAY(10YR 6/2)
APHYRIC BASALT & FRESHER APHYRIC BASALT WHICH IS
GRAY(10YR 6/1),PCES 1+3+7 ARE BASALT BRECCIA
COMPRISED OF CLASTS OF APHANITIC BLACK(10YR 2.5/1)
BASALT & GLASS FRAGMENTS SET IN CALCITE MATRIX WITH
APHANITIC CLASTS 10-20MM IN DIAMETER & GLASS 2-10MM
IN DIAMETER;
Vesicles :
Location: Filling: CLAY.MIN
PCES 1+3+7 HAVE IRREGULARLY SCATTERED VESICLES
WITH SOME FILLED WITH CLAY.MINS;
Replacement: CLAY MINERALS
CLAY.MIN FILLS VESICLES IN PCES 1+3+7;
CLAY MINERALS
Minerals Replaced: GLASS
CLAY.MINS ALONG GLASS FRACTURES IN PCES 1+3+7;
PALAGONITE
Minerals Replaced: GLASS
GLASS FRAGMENTS IN PCES 1+3+7 ALTERED TO PALAG;
CALCITE
CALCITE MATRIX IN PCES 1+3+7;
Leg : 82 Top/Bottom Interval(mm): 480/1350 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 505.85
Core: 38 Top of Core Depth (m) : 504.50
Sect: 1 Top of Section Depth(m): 504.98
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 10A (48-52), 10B (52-60), 10C (58-63),
10D (64-66), 10E (67-70), 11 (71-75), 12 (77-80),
13 (82-100), 14A (102-113), 14B (113-117),
15 (120-122), 16 (124-129), 17 (131-135);
Texture : APHYRIC;
Structure : PILLOW BASALT,SOME PCES FRACTURED WITH CALCITE IN &
ALONG FRACTURES,CALCITE RIMS ARE OBSERVED ON SOME
PCES;
Alteration : MOD
SLIGHT WEATHERING IS PATCHY & SEEN ALONG BORDERS O
MOST PCES;
Comments : BASALT IS GRAY(2.5Y N5/0),WEATHERED BASALT IS A
SLIGHTLY DIFFERENT GRAY(10YR 5/1),PILLOW BOUNDARY AT
55CM(?);
Vesicles : Size(mm): <1 Percent:
Location: Filling: CALCITE
VESICLES ARE VARIABLE IN FREQUENCY & SOME ARE
EMPTY WHILE MOST ARE FILLED WITH CALCITE;
Replacement: CALCITE
CALCITE IN/ALONG FRACTURES,CALCITE RIMS ON SOME
PCES,CALCITE FILLS MOST VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 507.50
Core: 38 Top of Core Depth (m) : 504.50
Sect: 2 Top of Section Depth(m): 506.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-6), 1B (5-22), 1C (23-25), 2 (27-48),
3A (50-54), 3B (55-58), 4A (59-70), 4B (70-79),
5A (80-83), 5B (83-88), 6 (90-97), 7 (98-103),
8 (105-108), 9 (110-119), 10 (120-125),
11 (127-130), 12 (132-135), 13 (137-150);
Texture : APHYRIC,FINE-GRAINED BUT SLIGHTLY COARSER THAN OVER-
LYING UNIT,PILLOW RIMS IN PCES 3A+12 WITH GLASS
GRADING TO APHANITIC BASALT TO VARIOLITIC BASALT;
Structure : PILLOW BASALT,FRACTURED WITH PCES 1A-4A CONTAINING
MINOR VEINLETS & FRACTURE FILLINGS OF CALCITE;
Alteration : MOD
BASALT WEATHERED ADJACENT TO FRACTURES;
Comments : APHYRIC BASALT IS GRAY(5Y 5/1),WEATHERED BASALT
ADJACENT TO FRACTURES IS GRAYISH-BROWN TO BROWN
(2.5Y 5/2 TO 10YR 5/2),BLACK APHANITIC BASALT &
GRAYISH-BROWN VARIOLITIC BASALT IN PCES 3A+12;
Vesicles : Size(mm): <0.5 Percent: 1-2
Location: Filling: CHLOR(?)
VESICLES ARE SCATTERED THROUGHOUT & MAINLY
GRAYISH-GREEN CHLOR(?)-FILLED;
Phenocrysts: PLAGIOCLASE
PLAG LATHS RANDOMLY ALTERED OR IN RADIATING
CLUSTERS APPEAR ALTERED DEEP GREEN(CHLOR?);
Replacement: CALCITE
MINOR VEINLETS & FRACTURE FILLINGS OF CALCITE IN
PCES 1A-4A;
CHLORITE
VESICLES FILLED WITH GRAYISH-GREEN CHLOR(?);
CHLORITE
Minerals Replaced: PLAG
PLAG LATHS RANDOMLY ALTERED TO DEEP GREEN
CHLOR(?);
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 510.45
Core: 39 Top of Core Depth (m) : 509.00
Sect: 1 Top of Section Depth(m): 509.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-2), 2A (4-14), 2B (12-20), 2C (18-23),
3 (24-29), 4 (30-37), 5A (38-45), 5B (45-48),
5C (48-51), 5D (51-67), 5E (67-75), 5F (73-80),
5G (80-85), 5H (84-87), 5I (87-92), 6 (95-99),
7 (101-105), 8A (107-127), 8B (125-145);
Texture : APHYRIC,SIMILAR TO CORE 38-2,PILLOW MARGINS IN PCES
3-4+5I-7;
Structure : PILLOW BASALT,CALCITE VEINLETS & SOME WITH CLAY.MIN;
Alteration : MOD
ALT.GLS;
Comments : SIMILAR TO CORE 38-2;
Replacement: CALCITE
CALCITE VEINLETS;
CLAY MINERALS
SOME VEINLETS FILLED WITH PALE-GREEN CLAY.MIN;
CLAY MINERALS
Minerals Replaced: GLASS
GLASS ALTERED TO DARK GREEN CLAY.MIN(?);
CHLORITE
Minerals Replaced: GLASS
GLASS ALTERED TO DARK GREEN CHLOR;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 558 Sample Midpoint (m) : 512.00
Core: 39 Top of Core Depth (m) : 509.00
Sect: 2 Top of Section Depth(m): 510.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (1-13), 2A (17-25), 2B (25-33), 3A (35-45),
3B (45-61), 3C (61-71), 3D (71-80), 3E (81-87),
3F (88-94), 4 (97-107), 5 (110-117), 6A (120-130),
6B (131-136), 7A (137-142), 7B (142-147);
Texture : APHYRIC,SIMILAR TO CORE 38-2,VARIOLITIC PILLOW
MARGINS AS IN CORE 38-2,PCES 3E-3F HAVE MINOR GLASS
CLASTS,PCE 5 HAS GLASS RIM OF PILLOW;
Structure : PILLOW BASALT,MINOR VEINLETS & FRACTURES FILLED WITH
CALCITE & CLAY.MINS;
Alteration : FRESH TO MOD
PCES 1-3C+3F-5;
MOD
PCES 3D-3E+6A-7B;
Comments : BASALT SIMILAR TO CORE 38-2;
Phenocrysts: PLAGIOCLASE
SMALL PLAG LATHS RANDOMLY ORIENTED-SIMILAR TO CORE
38-2;
Replacement: CALCITE
CALCITE FILLS MINOR VEINLETS & FRACTURES;
CLAY MINERALS
PALE GREEN CLAY.MINS FILL SOME MINOR VEINLETS &
FRACTURES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 513.50
Core: 39 Top of Core Depth (m) : 509.00
Sect: 3 Top of Section Depth(m): 512.00
LITHOLOGY: APHYRIC BASALT;
MASSIVE BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (0-5), 1B (6-15), 2A (17-21), 2B (22-27),
2C (28-31), 3 (34-41), 4A (43-52), 4B (54-60),
4C (61-70), 4D (72-79), 4E (80-86), 4F (87-91),
4G (91-99), 5A (103-106), 5B (105-110),
5C (112-119), 6A (120-125), 6B (126-133),
6C (130-136), 6D (136-140), 6E (139-142),
7 (144-149);
Texture : APHYRIC,APHANITIC,PCES 1A-1B+4A-5A+6A-6E VARIOLITIC,
PCES 1A-1B+4A-5A+6A-6E RELATIVELY FINE-GRAINED;
Structure : PILLOW BASALT,PCES 1A-1B+4A-5A+6A-6E HAVE MASSIVE
REGION,PCES 2A-3+5B-5C+7 HAVE CALCITE VEINS & VEINS
FILLED WITH GREEN UNIDENT.MINS,MINOR VEINS OF
CALCITE IN PCES 1A-1B+4A-5A+6A-6E & THESE PCES ALSO
HAVE FRACTURES INTERSPERSED THROUGHOUT FILLED WITH
CALCITE;
Alteration : MOD
PCES 2A-3+5B-5C+7 HAVE ALTERED SURFACES & ARE
ALTERED ADJACENT TO APHANITIC REGIONS WHICH MAY BE
DUE TO HYDROTHERMAL PROCESSES IN REGION,PCES
1A-1B+4A-5A+6A-6E ARE WEATHERED ALONG FRACTURES;
Comments : APHYRIC BASALT IS GRAY(5Y 5/1),WEATHERED BASALT
VARIES GRAYISH-BROWN(2.5Y 5/2 TO 10YR 5/2),BLACK
APHANITIC BASALT(10YR 2.5/1),GRAYISH-BROWN
VARIOLITIC REGION,OLIVE-GREEN(5Y 5/3) ALTERATION
PRODUCT ON SURFACES OF SOME PCES;
Replacement: CALCITE
CALCITE VEINS,CALCITE-FILLED FRACTURES;
CHLORITE
SMECTITE
ID CHLOR OR SMEC UNCERTAIN AS PRODUCTS OF POSSIBLE
HYDROTHERMAL ACTIVITY IN REGION;
UNIDENTIFIED
OLIVE-GREEN UNIDENT.MINS ON SURFACES OF PCES 5B-5C
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 558 Sample Midpoint (m) : 515.00
Core: 39 Top of Core Depth (m) : 509.00
Sect: 4 Top of Section Depth(m): 513.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (1-10), 1B (10-20), 1C (21-29), 2A (29-33),
2B (33-37), 2C (35-41), 2D (39-42), 2E (42-58),
2F (58-63), 2G (63-65), 3A (66-70), 3B (69-73),
4A (74-85), 4B (86-98), 4C (98-105), 5A (106-110),
5B (109-118), 5C (118-125), 6A (126-138),
6B (132-140), 7 (142-149);
Texture : APHYRIC,PCES 1A+4A HAVE NARROW VARIOLITIC EDGES
ZONING TO APHANITIC BASALT;
Structure : PILLOW BASALT IS LARGER WITH NARROWER EDGES;
Alteration : MOD
BASALT ALTERED;
Comments : GRAY(2.5Y N5/0) APHYRIC BASALT,ALTERED BASALT IS
GRAYISH-BROWN(2.5Y N5/2);
Phenocrysts: PLAGIOCLASE
Size(mm): 0.1
PLAG LATHS ARE FINER;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 558 Sample Midpoint (m) : 519.50
Core: 40 Top of Core Depth (m) : 518.00
Sect: 1 Top of Section Depth(m): 518.00
LITHOLOGY: BASALT BRECCIA;
APHYRIC BASALT;
LIMESTONE;
Piece No. : PCES 1 (1-8), 2A (10-17), 2B (17-21), 3A (24-29),
3B (29-34), 3C (33-49), 4A (40-45), 4B (45-49),
5 (50-63), 6 (66-77), 7 (78-84), 8A (86-93),
8B (93-97), 9A (100-105), 9B (105-109),
9C (109-113), 10A (114-122), 10B (122-130),
10C (129-134), 11A (136-140), 11B (140-150);
Comments : APHYRIC GRAYISH-BROWN(10YR 5/2) ALTERED ANGULAR TO
SUB-ROUNDED BASALT CLASTS,PCES 1-8A HAVE A MATRIX OF
A COMBINATION OF WHITE CALCITE & LIMESTONE & CLASTS
(<10%) BEING ROUNDED WITHIN BLACK APHANITIC CORES &
ALTERED RIMS,PCES 8A-11B HAVE MATRIX OF VERY FINE
BASALT FRAGMENTS WITH CALCITE IN FRACTURES & SMALLER
(<1CM) CLASTS ARE GENERALLY MORE ALTERED INCLUDING
ABOUT 20% REDDISH-YELLOW(7.5YR 7/8) BASALT CLASTS,
PCES 2A+7 ARE ROUNDED CLASTS WITH VARIOLITIC
TEXTURE(PILLOW FRAGMENT);
Alteration : EXT
Replacement: CALCITE
CALCITE MATRIX IN PCES 1-8A,CALCITE IN FRACTURES
IN PCES 8A-11B;
Leg : 82 Top/Bottom Interval(mm): 0/ 350 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 519.85
Core: 40 Top of Core Depth (m) : 518.00
Sect: 2 Top of Section Depth(m): 519.50
LITHOLOGY: BASALT BRECCIA;
APHYRIC BASALT;
Piece No. : PCES 1A (1-14), 1B (13-20), 1C (20-35);
Comments : BASALT BRECCIA COMPRISED OF APHYRIC ANGULAR TO SUB-
ROUNDED BASALT CLASTS OF SIMILAR LITHOLOGY TO
BASALTS HIGHER IN HOLE,MATRIX MAINLY COMMINUTED
BASALTIC MATERIAL WITH LESSER CALCITE;
Alteration : ALMOST COMPLETELY ALTERED
Vesicles : Size(mm): Percent: 5
Location: Filling: FE.OXIDE
VESICLES OFTEN FE.OXIDE-FILLED;
Replacement: CALCITE
CALCITE MATRIX;
FERROUS OXIDE
FE.OXIDE FILLS SOME VESICLES;
Leg : 82 Top/Bottom Interval(mm): 350/1500 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 521.00
Core: 40 Top of Core Depth (m) : 518.00
Sect: 2 Top of Section Depth(m): 519.85
LITHOLOGY: MYLONITE;
GABBRO;
ANORTHOSITE VEIN;
METAMORPHIC ROCK;
Piece No. : PCES 2 (36-48), 3A (50-51), 3B (51-60), 3C (59-70),
3D (70-78), 3E (78-84), 4A (85-90), 4B (91-101),
4C (102-104), 4D (105-109), 5A (111-121),
5B (120-130), 5C (130-139), 6 (142-149);
Comments : PCE 2 IS SOFT CLAY-RICH MYLONITE STRONGLY SHEARED
WITH ALTERNATING 1-2CM IRREGULAR BANDS OF
ALTERNATING COLOR-YELLOWISH-BROWN(10YR 5/8) &
MOTTLED GREENISH-GRAY(5BG 5/1) WITH PALE GREEN
(5G 6/2),PCES 3A-6 ARE WEAKLY SHEARED ALTERED GABBRO
& OVERALL DARK GRAYISH-BROWN(10YR 4/2) 5-10% BRONZE
(REDDISH-BROWN 5YR 5/4) RELIC PYX,AT INTERVAL
126-136CM THERE IS A SHEARED ANORTHOSITE VEIN
COMPRISED OF RELIC COARSE GRAINS(1-2CM) OF PLAG &
PALE-GREEN(?) PYX SEPARATED BY INTERLACED ZONES OF
WHITE FINELY SHEARED MATERIAL WITH THE VEIN MARGINS
HIGHLY IRREGULAR & GENERALLY ABUTTS FINE-GRAINED DAR
REDDISH-BROWN(5YR 3/3) MATERIAL;
Alteration : ALMOST COMPLETELY ALTERED
Groundmass : PLAGIOCLASE
RELICT PLAG IN ANORTHOSITE VEIN IN PCES 5B-5C;
PYROXENE
RELICT PYX IN PCES 3A-6;
Leg : 82 Top/Bottom Interval(mm): 0/1100 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 522.10
Core: 40 Top of Core Depth (m) : 518.00
Sect: 3 Top of Section Depth(m): 521.00
LITHOLOGY: FAULT BRECCIA;
GABBRO;
BASALT;
ANORTHOSITE;
Piece No. : PCES 1A (0-15), 1B (16-38), 1C (37-44), 2 (48-57),
3 (58-74), 4 (74-90), 5 (91-100), 6 (102-110);
Comments : PCES 1A-3 ARE SHEARED FAULT POLYMICT BRECCIA
COMPRISED OF RECOGNIZABLE GABBRO CHUNKS & BASALT
CLASTS WITH SHEARING RENDERING INDIVIDUAL BOUNDARIES
INDEFINABLE & MATRIX IS BROWN(10YR 4/3) TO
(10YR 5/6) & THE BASALT CLASTS ARE GRAY(2.5Y N5/0) &
RANGE IN SIZE FROM 1-10MM IN DIAMETER & GABBRO
CHUNKS RANGE FROM OLIVE(5Y 5/3) TO OLIVE-GRAY
(5Y 5/2) & CLAY.MINS ABOUND,PCES 1C+4 HAVE SHEARED
ANORTHOSITE PCES ROUGHLY CEMENTED TOGETHER IN A
CLAY.MIN(CALCITE?) MATRIX THEN COMPLETELY SHEARED-
THE PCE IN PCE 1C IS MORE MASSIVE & LESS FRAGMENTED
THAN IN PCE 4 & BOTH ARE LIGHT GRAY TO GRAY
(2.5Y N6/0),PCES 3-4+5-6 ARE STRONGLY ALTERED &
SHEARED DARK-GRAYISH-BROWN(10YR 4/2) TO REDDISH-
BROWN(5YR 5/4) GABBRO WITH RELIC PYX PATCHES TO
LIGHT REDDISH-BROWN(5YR 6/5) & THERE IS CLAY.MIN
WORKED INTO FABRIC,PCE 6 IS SHEARED GABBRO RUBBLE
COMPRISED OF VERY SMALL PCES(5-15MM) OF SHEARED
GABBRO DEBRIS WITH A LARGE VOLUME % OF CLAY.MINS;
Alteration : ALMOST COMPLETELY ALTERED
Groundmass : PYROXENE
Size(mm): 1-5
PYX & RELIC PYX IN PCES 3-6;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 528.50
Core: 41 Top of Core Depth (m) : 527.00
Sect: 1 Top of Section Depth(m): 527.00
LITHOLOGY: GABBRO BRECCIA;
Piece No. : PCES 1 (1-3), 2A (4-16), 2B (17-24), 2C (24-34),
2D (31-45), 2E (45-56), 2F (57-75), 2G (76-95),
2H (96-115), 3A (118-127), 3B (125-145),
3C (138-149);
Comments : GABBRO CLASTS STRONGLY ALTERED TO CLAY.MINS & SERP
WHICH ALSO MAKES UP THE MATRIX,CLASTS(1MM TO SEVERAL
CM) ARE COLORED FROM LIGHT BROWNISH-GRAY(2.5Y 6/2)
TO BROWN(10YR 5/3),PCES 2E+3B HAVE CALCITE VEINS
WITH THE VEIN IN PCE 3B POSSIBLY SHEARED & SHOWS
SOME GREENISH CLAY.MIN BESIDE IT;
Alteration : ALMOST COMPLETELY ALTERED
Groundmass : ORTHOPYROXENE
Size(mm): <5
THROUGHOUT SECTION & IS LIGHT TO DARK BROWN;
Replacement: CLAY MINERALS
Minerals Replaced: GABBRO
SERPENTINITE
Minerals Replaced: GABBRO
GABBRO CLASTS ARE STRONGLY ALTERED TO CLAY.MINS &
SERP;
CALCITE
CALCITE VEINS IN PCES 2E+3B;
CLAY MINERALS
GREENISH CLAY.MIN BESIDE VEINS IN PCE 3B;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Drake, N.
Hole: 558 Sample Midpoint (m) : 530.00
Core: 41 Top of Core Depth (m) : 527.00
Sect: 2 Top of Section Depth(m): 528.50
LITHOLOGY: GABBRO;
GABBRO BRECCIA;
BASALT;
MYLONITE;
Piece No. : PCES 1A (1-3), 1B (4-16), 1C (9-17), 1D (14-19),
2A (21-28), 2B (28-36), 2C (34-39), 3 (41-44),
4A (46-59), 4B (60-70), 5A (72-77), 5B (77-80),
6A (82-94), 6B (93-115), 6C (115-126), 6D (122-129),
6E (129-138), 6F (139-149);
Comments : ENTIRE CORE IS SIMILAR TO CORE 41-1 BUT MORE ALTERED
& BRECCIATED AS IT NEARS SHEAR ZONE AT PCE 6E,PCES
1A-5B ARE SHEARED GABBRO WHICH IS MORE ALTERED &
SHEARED THAN CORE 40-1,PCES 6A-6F ARE SHEARED GABBRO
BRECCIA GRADING INTO SHEAR ZONE WITH SOFT CLAY.MIN-
RICH MYLONITE WITH MULTIPLE IRREGULAR-COLORED BANDS
OF VERY DARK-GRAYISH-BROWN(10YR 3/2) & BROWN
(10YR 4/3) & GRAY(10YR 5/1) GRADING INTO PALE GREEN
(5G 6/2) WITH ANGULAR CLASTS(<5MM) OF SAME GREEN-THE
MYLONITE ZONE ALSO CONTAINS ANGULAR MOD ALTERED
CLASTS OF BASALT WITH GRAY(7.5YR N0) CORES & NARROW
BROWNISH-YELLOW(10YR 6/8) ALTERED RIMS,PCE 6F HAS A
SINGLE LAYER(7MM) BASALT CLAST;
Alteration : ALMOST COMPLETELY ALTERED
Replacement: CLAY MINERALS
CLAY.MINS IN SHEAR ZONE;
Leg : 82 Top/Bottom Interval(mm): 0/1450 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 531.45
Core: 41 Top of Core Depth (m) : 527.00
Sect: 3 Top of Section Depth(m): 530.00
LITHOLOGY: POLYMICT BRECCIA;
GABBRO;
APHYRIC BASALT;
FAULT BRECCIA;
GABBRO BRECCIA;
Piece No. : PCES 1 (1-5), 2A (7-10), 2B (10-12), 3 (13-27),
4A (28-40), 4B (40-54), 5 (55-59), 6 (60-70),
7A (71-76), 7B (77-79), 7C (80-87), 7D (87-106),
7E (103-119), 7F (118-128), 7G (128-145);
Comments : PCES 1-2B POLYMICT BRECCIA COMPRISED OF
SERPENTINIZED OLIVE-COLORED(5Y 5/3) GABBRO(<5MM) &
APHYRIC FINE-GRAINED GRAY(10YR 5/1) BASALT WITH
FRESH CENTERS & RIM ALTERED TO BROWN CLAY.MIN WITH
ONE CLASTS SHOWING FRESH BLACK GLASS & THE MATRIX OF
THIS BRECCIA IS SERP & OTHER GREENISH CLAY.MINS,PCES
3-5 SHEARED FAULT BRECCIA WITH PARALLEL TEXTURED
MULTICOLORED LAYERS OF DIFFERENT CLAY.MINS(COLOR
RANGES FROM DARK BROWN OVER PALE BROWN TO DARK
GREEN) WITH CALCITE WITHIN THIN FISSURES COMMON &
THE SUBROUNDED CLASTS OF SERPENTINIZED GABBRO
SCATTERED(<8MM SIZE),PCE 6 IS LARGER CLAST OF
SERPENTINIZED GABBRO(DUNITE?-NO VISIBLE OL) AND IS
GREENISH-GRAY(5GY 5/1),PCES 7A-7G SHEARED GABBRO
BRECCIA COMPRISED OF CLASTS OF SERPENTINIZED GABBRO
(<10MM) SEPARATED BY FISSURES & VEINS WHICH ARE
USUALLY FILLED WITH CALCITE & IN THE LOWER PART
VEINLETS ARE FILLED WITH CLAY.MINS & CHRYSOTILE
& THE COLOR OF THE ROCK IS DARK-GREEN TO DARK-BROWN;
Alteration : ALMOST COMPLETELY ALTERED
0-120 CM;
MOD TO ALMOST COMPLETELY ALTERED
120-150CM;
Phenocrysts: ORTHOPYROXENE ( 5%)
Size(mm): <6
PCES 7A-7G HAS MOD ALTERED OPX;
Replacement: SERPENTINITE
SERP IN MATRIX OF PCES 1-2B;
CLAY MINERALS
GREENISH-CLAY.MINS MAKE UP MATRIX OF PCES 1-2B,
LAYERS OF CLAY.MINS IN PCES 3-5,LOWER PART OF PCES
7A-7G HAVE CLAY.MIN-FILLED VEINLETS;
CALCITE
CALCITE FILLS FISSURES & VEINS IN PCES 3-5+7A-7G;
UNIDENTIFIED
Minerals Replaced: OPX
OPX MOD ALTERED TO UNIDENT.MINS;
CHRYSOTILE
CHRYSOTILE(POSSIBLY ASBESTOS) FOUND IN LOWER PART
OF PCES 7A-7G;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 537.50
Core: 42 Top of Core Depth (m) : 536.00
Sect: 1 Top of Section Depth(m): 536.00
LITHOLOGY: SERPENTINIZED GABBRO;
DUNITE;
SEDIMENT;
Piece No. : PCES 1 (1-11), REST OF SECTION NO PCE NUMBERS
ASSIGNED- INTERVALS (11-50), (50-62), (62-69),
(69-108), (108-113), (113-127), (128-149);
Comments : INTERVALS 1-11+50-62+69-108+113-128 SERPENTINIZED
BLACK GABBRO(DUNITE?) WITH FRESH TO MOD ALTERED
SERP WITH SMALL VEINLETS FILLED WITH CHRYSOTILE,
INTERVALS 11-50+62-69+108-113+128-149 ARE COMPRISED
OF HIGHLY SHEARED SERP(GROUND BY DRILLING?) WITH
COLOR FROM WHITE TO DARK GRAY;
Replacement: SERPENTINITE
SERPENTINIZED GABBRO;
CHRYSOTILE
CHRYSOTILE FILLS VEINLETS;
Leg : 82 Top/Bottom Interval(mm): 0/ 400 Analyst: Neuser, R.
Hole: 558 Sample Midpoint (m) : 537.90
Core: 42 Top of Core Depth (m) : 536.00
Sect: 2 Top of Section Depth(m): 537.50
LITHOLOGY: SERPENTINITE;
Piece No. : PCE 1 (0-40);
Comments : SHEARED SERPENTINE,GROUND CLAYEY SERP AS DESCRIBED
IN CORE 42-1;
Replacement: SERPENTINITE
Minerals Replaced: GABBRO
SERPENTINIZED GABBRO;
Leg : 82 Top/Bottom Interval(mm): 0/ 50 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 545.05
Core: 43 Top of Core Depth (m) : 545.00
Sect: 1 Top of Section Depth(m): 545.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE NO PCE NUMBER ASSIGNED, INTERVAL(0-5);
Texture : APHYRIC BASALT;
Comments : SEVERAL SMALL APHYRIC BASALT PEBBLES-POSSIBLY FALLEN
DOWNCORE?;
Leg : 82 Top/Bottom Interval(mm): 50/1400 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 546.40
Core: 43 Top of Core Depth (m) : 545.00
Sect: 1 Top of Section Depth(m): 545.05
LITHOLOGY: SERPENTINITE;
ANTIGORITE;
Piece No. : PCES 1 (5-30), 2 (30-36), 3 (36-52), 4 (62-80),
5 (78-85), 6 (85-103), 7 (114-136), INTERVALS
(52-61), (103-113) NO PCE NUMBERS ASSIGNED;
Comments : BLACK(5Y 2.5/1) SERP WHICH IS WEAKLY TO MOD SHEARED
WITH VARYING ABUNDANCE OF SINUOUS VEINLETS OF WHITE
CHRYSOTILE,INTERVALS 56-67+106-118 HIGHLY FRACTURED
(BY DRILLING) SERP,INTERVAL 56-68 HAS 2CM CHRYSOTILE
VEIN;
Replacement: SERPENTINITE
CHRYSOTILE
CHRYSOTILE VEINLETS &2CM VEIN IN PCE 4;
ANTIGORITE (10-30%)
Size(mm): 10
PALE-GREEN XTLS OF ANTIGORITE-ID UNCERTAIN;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 555.50
Core: 44 Top of Core Depth (m) : 554.00
Sect: 1 Top of Section Depth(m): 554.00
LITHOLOGY: SERPENTINITE;
SERPENTINITE FAULT BRECCIA;
Piece No. : PCES 1 (1-37), INTERVAL (39-150) NO PCE NUMBER
ASSIGNED;
Comments : PCE 1 IS SERP AS IN CORE 43-1,INTERVAL 39-150 IS
SERP FRAGMENTS(<1CM) IN SHEAR-LAYERED SOFT CLAYEY
MATRIX;
Replacement: SERPENTINITE
PCE 1,CLAYEY SERP FRAGMENTS;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 557.00
Core: 44 Top of Core Depth (m) : 554.00
Sect: 2 Top of Section Depth(m): 555.50
LITHOLOGY: SERPENTINITE FAULT BRECCIA;
Piece No. : PCE 1 (0-150);
Comments : SERPENTINITE FAULT BRECCIA AS IN CORE 44-1;
Replacement: SERPENTINITE
FAULT BRECCIA AS IN CORE 44-1;
Leg : 82 Top/Bottom Interval(mm): 0/ 200 Analyst: Christie, D.M.
Hole: 558 Sample Midpoint (m) : 557.20
Core: 44 Top of Core Depth (m) : 554.00
Sect: 3 Top of Section Depth(m): 557.00
LITHOLOGY: SERPENTINITE;
ANTIGORITE;
Piece No. : PCE 1 (1-20);
Comments : SERP WITH LARGE(<1CM) ANTIGORITE(?) XTLS AS IN CORE
43-1;
Replacement: SERPENTINITE
ANTIGORITE
Size(mm): 10
LARGE ANTIGORITE XTLS;
Leg : 82 Top/Bottom Interval(mm): 0/ 200 Analyst: Rideout, M.
Hole: 558 Sample Midpoint (m) : 557.43
Core: 44 Top of Core Depth (m) : 554.00
Sect: CC Top of Section Depth(m): 557.33
LITHOLOGY: SERPENTINITE;
ANTIGORITE;
CHRYSOTILE;
SERPENTINITE RUBBLE;
Piece No. : PCE 1 (1-17);
Comments : INTERVAL 0-9CM IS SERP AS IN CORE 43-1 WITH LARGE
AUGENS(<1CM) OF ANTIGORITE XTLS & CHRYSOTILE VEINS
ARE ALSO PRESENT,INTERVAL 10-17CM IS SERP RUBBLE;
Replacement: SERPENTINITE
ANTIGORITE
Size(mm): 10
LARGE AUGENS OF ANTIGORITE XTLS;
CHRYSOTILE
CHRYSOTILE VEINS;
|
