Leg : 82 Top/Bottom Interval(mm): 0/ 150 Analyst: Christie, D.M.
Hole: 561 Sample Midpoint (m) : 8.65
Core: H 1 Top of Core Depth (m) : 0.00
Sect: CC Top of Section Depth(m): 8.60
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (1-13);
Texture : APHYRIC,FINE-GRAINED;
Structure : CALCITE VEINS;
Alteration : ALTERATION ALONG FRACTURES;
Comments : GRAY BASALT(7.5YR N5),GRAYISH-BROWN(10YR 5/2)
ALTERATION ALONG FRACTURES;
Vesicles : Size(mm): <1 Percent:
Location: Filling: CLAY.MINS
Shape : ROUND
SCATTERED CLAY.MIN-FILLED VESICLES;
Replacement: CALCITE
CALCITE-FILLED VEINS;
CLAY MINERALS
CLAY.MINS FILL VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/ 600 Analyst: Christie, D.M.
Hole: 561 Sample Midpoint (m) : 412.10
Core: 1 Top of Core Depth (m) : 411.50
Sect: 1 Top of Section Depth(m): 411.50
LITHOLOGY: PLAG-OL SPARSELY TO MOD PHYRIC BASALT;
Piece No. : PCES 1A (0-14), 1B (13-25), 1C (23-30), 2A (32-39),
2B (37-43), 2C (43-50), 3A (52-57), 3B (57-60);
Texture : APHYRIC,FINE-GRAINED;
Structure : FRACTURES LINED WITH DARK-GREEN CLAY.MIN,MINOR
CALCITE VEINS;
Alteration : FRESH
PCES 1A-1C;
FRESH TO MOD
PCES 2A-3B;
Comments : GRAY FRESH BASALT(7.5YR N6/1),ALTERED BASALT IS
GRAYISH-BROWN TO BROWN(10YR 5/2 TO 10YR 5/3);
Vesicles : Size(mm): <1 Percent: 2-5
Location: Filling: CLAY.MIN
Shape : ROUND
ROUNDED DARK-GREEN CLAY.MIN-FILLED ROUNDED
VESICLES;
Phenocrysts: PLAGIOCLASE
BARELY VISIBLE PLAG LATHS;
OLIVINE ( 2-3%)
ROUND DARK-BROWN ALTERED OL(?);
Replacement: CALCITE
MINOR CALCITE-FILLED VEINS;
CLAY MINERALS
DARK-GREEN CLAY.MIN LINES FRACTURES & FILLS
VESICLES;
Leg : 82 Top/Bottom Interval(mm): 600/1500 Analyst: Christie, D.M.
Hole: 561 Sample Midpoint (m) : 413.00
Core: 1 Top of Core Depth (m) : 411.50
Sect: 1 Top of Section Depth(m): 412.10
LITHOLOGY: BASALT BRECCIA;
LIMESTONE;
Piece No. : PCES 4 (64-68), 5 (71-74), 6A (76-82), 6B (82-89),
7 (90-95), 8A (95-101), 8B (101-105), 8C (105-109),
8D (109-112), 8E (112-115), 9A (117-124),
9B (125-134), 10A (135-139), 10B (137-144),
11 (145-150);
Comments : BASALT BRECCIA WITH A LIMESTONE MATRIX,LARGE(>5CM)
ANGULAR CLASTS OF FINE-GRAINED BASALT IN A MATRIX OF
LIGHT-GRAY LIMESTONE,SOME LIMESTONE-BASALT CONTACTS
ARE HIGHLY IRREGULAR & APPEAR CORROSIVE WHILE OTHERS
ARE SHARP,IN INTERVAL 118-123CM THERE ARE OCCASIONAL
SMALL(<1CM) PALAGONITIZED GLASS FRAGMENTS;
FRESH TO MOD
Replacement: PALAGONITE
Minerals Replaced: GLASS
Leg : 82 Top/Bottom Interval(mm): 0/ 550 Analyst: Rideout, M.
Hole: 561 Sample Midpoint (m) : 413.55
Core: 1 Top of Core Depth (m) : 411.50
Sect: 2 Top of Section Depth(m): 413.00
LITHOLOGY: APHYRIC BASALT;
LIMESTONE;
Piece No. : PCES 1A (0-6), 1B (7-14), 2A (16-20), 2B (21-27),
2C (28-34), 3 (35-41), 4 (45-54);
Texture : APHYRIC,FINE-GRAINED,LIMESTONE PRESENT IN INTERVAL
34-55CM AS A RIM TO HALF OF ROCK,ALT.GLAS RIMS IN
INTERVAL 28-41CM;
Structure : CLAY.MINS FILL FRACTURES;
Alteration : FRESH TO MOD
ALT.GLAS,FRACTURES FILLED WITH CLAY.MINS & OXIDES;
Comments : BASALT IS GRAY(7.5YR N6/0),DEVT.GLS IS VERY DARK-
GRAY(10YR 3/1),LIMESTONE IS PALE BROWN(10YR 8/4);
Vesicles : Size(mm): TO 2 Percent:
Location: Filling: CLAY.MINS
Shape : ROUND
VESICLES ARE SCATTERED & FAIRLY ROUND WITH SOME
CLAY.MIN-FILLED;
Phenocrysts: PLAGIOCLASE
BARELY VISIBLE PLAG XTLS;
Replacement: CLAY MINERALS
CLAY.MINS FILL FRACTURES & SOME VESICLES;
UNIDENTIFIED
Minerals Replaced: GLASS
ALT.GLAS,DEVT.GLS IS FOUND ADJACENT TO LIMESTONE
MATRIX;
CLAY MINERALS
Minerals Replaced: GLASS
SOME GLASS RIMS ALTERED TO CLAY.MINS;
OXIDES
SOME OXIDES FILL FRACTURES;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Christie, D.M.
Hole: 561 Sample Midpoint (m) : 416.00
Core: 2 Top of Core Depth (m) : 414.50
Sect: 1 Top of Section Depth(m): 414.50
LITHOLOGY: APHYRIC BASALT;
LIMESTONE;
Piece No. : PCES 1A (1-5), 1B (5-8), 1C (8-13), 2A (15-18),
2B (20-23), 2C (25-28), 3A (30-39), 3B (39-46),
3C (46-48), 4A (51-59), 4B (60-67), 4C (67-72),
4D (72-81), 4E (80-87), 5A (88-91), 5B (90-93),
6A (94-107), 6B (107-112), 6C (108-117),
6D (108-125), 7 (127-137), 8A (138-142),
8B (142-150);
Texture : APHYRIC,FINE-GRAINED,NARROW GLASS RIM ON PCE 4D,
ANGULAR GLASS FRAGMENTS IN LIMESTONE IN PCE 5B;
Structure : FRACTURES & VEINLETS FILLED WITH LIMESTONE(CLAY &
CALCITE?),DRUSY CALCITE & GREEN CLAY.MIN VEIN IN
PCE 3A;
Alteration : OL ALTERED,ALTERATION ALONG FRACTURES;
Comments : GRAY UNALTERED BASALT(7.5YR 5N);
Vesicles : Size(mm): TO 3 Percent:
Location: Filling: CLAY.MIN
Shape : ROUND,IRREG
VESICLES UNIFORMLY SCATTERED & FILLED WITH DARK-
GREEN CLAY.MINS,SOME MINOR IRREGULAR VESICLES ALSO
PRESENT;
Phenocrysts: PLAGIOCLASE ( TO 1%)
Size(mm): TO 3
LATHS,SCATTERED EQUANT MICROPHENOS;
OLIVINE
Size(mm): TO 1
SCATTERED DARK-GREEN PSEUDOMORPHS AFTER OL;
Replacement: CALCITE
CALCITE VEINS;
CLAY MINERALS
DARK GREEN CLAY.MINS FILL VEINS & VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/1400 Analyst: Christie, D.M.
Hole: 561 Sample Midpoint (m) : 417.40
Core: 2 Top of Core Depth (m) : 414.50
Sect: 2 Top of Section Depth(m): 416.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 1A (1-7), 1B (4-11), 1C (11-18), 1D (18-28),
1E (28-32), 1F (33-43), 1G (43-48), 1H (48-55),
2A (57-67), 2B (67-69), 3 (71-103), 4A (103-110),
4B (110-119), 4C (120-129), 5 (130-140);
Texture : APHYRIC,THIN VENEER OF GLASS ON PCES 1C-1D+4C(PILLOW
MARGINS?) GRADING TO A VARIOLITIC ZONE & THEN TO
FINE-GRAINED BASALT;
Structure : PILLOW BASALT(?),HIGHLY FRACTURED WITH FRACTURES
COATED WITH LIGHT OLIVE-BROWN CALCITE(& CLAY?),
LIMESTONE VEINS SIMILAR TO CORE 2-1 WITH VEIN
BOUNDARIES IRREGULARLY SHAPED,SMALL(1-3MM) PATCHES
OF LIMESTONE OCCUR WITHIN BASALT;
Alteration : OL ALTERED;
Vesicles : Size(mm): 1-2 Percent:
Location: Filling: CLAY.MINS
Shape : IRREGULAR
DARK GREEN CLAY.MINS IN IRREGULAR VESICLE-LIKE
PATCHES MAY ACTUALLY BE PSEUDOMORPHED OL;
Phenocrysts: OLIVINE
Size(mm): TO 3
OCCASIONAL OL(ALTERED TO GREEN CLAY.MIN) BUT MAY
BE PSEUDOMORPH OL FILLING VESICLE-LIKE STRUCTURES;
Replacement: CALCITE
CALCITE-FILLED FRACTURES;
CLAY MINERALS
DARK-GREEN CLAY.MINS FILL VESICLE-LIKE STRUCTURES
(MAY ACTUALLY BE PSEUDOMORPHED OL);
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 561 Sample Midpoint (m) : 419.00
Core: 2 Top of Core Depth (m) : 414.50
Sect: 3 Top of Section Depth(m): 417.50
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (1-15), 1B (15-23), 2 (25-33), 3A (34-36),
3B (38-43), 3C (36-43), 3D (43-46), 4A (47-55),
4B (55-59), 5 (60-68), 6A (69-75), 6B (75-79),
7 (82-88), 8 (90-96), 9 (98-104), 10A (106-111),
10B (112-117), 10C (117-120), 11A (121-131),
11B (131-135), 12A (136-141), 12B (142-146),
12C (145-149);
Texture : APHYRIC,FINE-GRAINED,PILLOW MARGINS AT INTERVALS
18-24+112-117CM WITH VARIOLITIC ZONES GRADING TO
CHILLED GLASS RINDS,FRESH GLASS RINDS ON PCES
4B+6A-6B;
Structure : PILLOW BASALT,SOME VEINLETS FILLED WITH CALCITE;
Alteration : FRESH
Comments : GRAY(2.5YR N5/0) BASALT;
Vesicles : Size(mm): <1 Percent:
Location: Filling:
Shape : ROUND
VESICLES COMMON;
Phenocrysts: OLIVINE
Size(mm): TO 3
ID OL UNCERTAIN,OL PSEUDOMORPHS FILLED WITH GREEN
CLAY.MINS WHILE SOME OL IS FRESH(?);
PLAGIOCLASE
Size(mm): <3
FEW PLAG PHENOS;
Replacement: CLAY MINERALS
Minerals Replaced: OL
GREEN CLAY.MIN MAY BE OL PSEUDOMORPHS;
CALCITE
CALCITE-FILLED VEINLETS;
Leg : 82 Top/Bottom Interval(mm): 0/1500 Analyst: Neuser, R.
Hole: 561 Sample Midpoint (m) : 425.00
Core: 3 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 1A (1-7), 2 (9-15), 3 (15-23), 4 (24-29),
5A (31-34), 5B (35-43), 5C (43-50), 6 (51-63),
7A (64-70), 7B (66-72), 7C (73-74), 8 (76-84),
9A (85-90), 9B (87-93), 9C (89-97), 9D (98-108),
9E (108-112), 9F (112-118), 9G (118-122),
9H (122-125), 9I (125-131), 9J (132-140),
9K (145-148);
Texture : APHYRIC,FINE-GRAINED,PILLOW MARGINS AT INTERVALS
40-44+83-84CM WITH VARIOLITIC ZONES GRADING TO
CHILLED GLASS RINDS;
Structure : PILLOW BASALT,FRACTURES FILLED WITH PINKISH-GRAY
LIMESTONE & CONTAIN ANGULAR BRECCIATED BASALT
FRAGMENTS(<1CM IN SIZE);
Alteration : OL REPLACED,FRESH GLASS;
Comments : GRAY BASALT(2.5YR N5/0);
Vesicles : Size(mm): <1 Percent:
Location: Filling: CLAY.MINS
Shape : ROUND
VESICLES COMMON & MOSTLY FILLED WITH GREEN
CLAY.MINS;
Phenocrysts: OLIVINE
Size(mm): TO 3
ID OL UNCERTAIN,OL MOSTLY REPLACED WITH GREEN
CLAY.MINS;
PLAGIOCLASE
Size(mm): <3
FEW PLAG PHENOS ARE SCATTERED,ROUNDED(RESORBED?);
Replacement: CLAY MINERALS
Minerals Replaced: OL
GREEN CLAY.MIN REPLACES OL;
CLAY MINERALS
GREEN CLAY.MINS FILL MOST VESICLES;
Leg : 82 Top/Bottom Interval(mm): 0/ 950 Analyst: Neuser, R.
Hole: 561 Sample Midpoint (m) : 425.95
Core: 3 Top of Core Depth (m) : 423.50
Sect: 2 Top of Section Depth(m): 425.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
LIMESTONE;
Piece No. : PCES 1 (1-8), 2 (11-22), 3A (24-35), 3B (35-44),
3C (44-50), 3D (50-53), 3E (53-59), 4 (60-91);
Texture : APHYRIC,FINE-GRAINED,GLASS ON PCES 2+3A,SIMILAR TO
CORE 3-1;
Structure : PILLOW BASALT,VERY IRREGULAR BOUNDED LIMESTONE-
FILLED VEIN(1-3MM THICK) IN PCES 3B+3C;
Alteration : FRESH
Comments : GRAY(2.5YR N5/0) BASALT;
|
