Leg : 32 Top/Bottom Interval(mm): 1150/1500 Analyst: Marshall, M.
Hole: 307 Sample Midpoint (m) : 299.00
Core: 12 Top of Core Depth (m) : 297.50
Sect: 1 Top of Section Depth(m): 298.65
LITHOLOGY: ALTERED BASALT (HYALOCLASTITE);
Piece No. : INTERVAL (115-150CM);
Texture : SEMI-LITHIFIED, BRECCIA, EACH FRAGMENT HAS
CONCENTRIC COLOR ZONES;
Structure : FRACTURED BRECCIA WITH HEMATITE AND CALCITE VEINS
COMMON;
Comments : EACH FRAGMENT HAS CONCENTRIC COLOR ZONES: GREYISH
ORANGE PINK (5YR7/3) AND GREYISH YELLOW ORANGE
(10YR7/6) AND DARK REDDISH BROWN (10R3/3) AND PALE
YELLOW GREEN (10GY7/2), DATA TAKEN FROM INITIAL
REPORTS SINCE NO SHIPBOARD VISUAL DESCRIPTION;
Replacement: HEMATITE
CALCITE
Leg : 32 Top/Bottom Interval(mm): 0/ 0 Analyst: Marshall, M.
Hole: 307 Sample Midpoint (m) : 299.10
Core: 12 Top of Core Depth (m) : 297.50
Sect: CC Top of Section Depth(m): 299.10
LITHOLOGY: ALTERED BASALT (HYALOCLASTITE);
SAME AS CORE 12-1 (115-150CM);
Leg : 32 Top/Bottom Interval(mm): 620/ 720 Analyst: Marshall, M.
Hole: 307 Sample Midpoint (m) : 307.72
Core: 13 Top of Core Depth (m) : 307.00
Sect: 1 Top of Section Depth(m): 307.62
LITHOLOGY: SEDIMENT (CHERT);
Piece No. : PCES 1 (62-66), 2 66-72);
Comments : BROWN CHERT PROBABLY CAVINGS FROM ABOVE;
Leg : 32 Top/Bottom Interval(mm): 740/1500 Analyst: Marshall, M.
Hole: 307 Sample Midpoint (m) : 308.50
Core: 13 Top of Core Depth (m) : 307.00
Sect: 1 Top of Section Depth(m): 307.74
LITHOLOGY: ALTERED BASALT;
Piece No. : PCES 3 (74-78), 4 (77-83),
5 (84-91), 6 (91-111), 7 (111-121), 8 (125-145),
9 (145-150);
Texture : APHANITIC AND SPARSE PLAG GLOMEROPHENOS (1MM),
INTERSERTAL AND VERY FINE-GRAINED, VARIOLITIC
TEXTURE AND CELADONITE (OFTEN GLASS);
Structure : VEINS ARE 1-2MM WITH CALCITE AND SOME DARK GREEN
CELADONITE(?), BASALT IS HIGHLY FRACTURED (AVERAGE
FRACTURE SPACING 1-2CM) IN SETS OF FRACTURES:
(1) MOSTLY HIGH ANGLE (PROBABLY COOLING JOINTS) THAT
ARE LOCI FOR WEATHERING, (2) LOW ANGLE, POST DATE
WEATHERING AND CALCITE CEMENTATION OF THE BRECCIA,
INTERLAYERED CALCITE AND DUSKY GREEN (5G3/2) CELAD/
MONT RELICT AFTER GLASS;
Alteration : FRACTURES OF TYPE (1) ARE LOCI FOR WEATHERING AND
THOSE OF TYPE 2 HAVE POST DATE WEATHERING;
Comments : AT TOP- GREEN GREY (5GY6/1) AND GREY GREEN (10G4/2)
NEAR FRACTURES AT BOTTOM- DARK GREY (N4) AND GREEN
BLACK (5G3/1) NEAR FRACTURES, SPECIAL PICTURE OF
PCE 6, COOLING UNITS ARE (75-90CM) AND (90-150CM),
PCES THAT GO TOGETHER ARE 3-4+6-7+8-9,
CONTRARY TO DRAWING "GLASS" DOES NOT CROSS ENTIRE
SURFACE AND IS ONLY AN ENLARGEMENT;
Vesicles : Size(mm): 0.1 Percent:
Location: Filling: CELAD
VESICLES MAY BE FILLED WITH CELAD(?);
Phenocrysts: PLAGIOCLASE
Size(mm): 1
SPARSE PLAG GLOMEROPHENOS (1MM);
Replacement: CELADONITE
ID CELAD FILLING VESICLES/VEINS QUESTIONABLE;
CALCITE
MONTMORILLONITE
Leg : 32 Top/Bottom Interval(mm): 0/1500 Analyst: Marshall, M.
Hole: 307 Sample Midpoint (m) : 310.00
Core: 13 Top of Core Depth (m) : 307.00
Sect: 2 Top of Section Depth(m): 308.50
LITHOLOGY: ALTERED BASALT AND BRECCIA;
Piece No. : PCES 1 (0-3), 2 (3-6), 3 (7-21), 4 (21-35),
5 (35-46), 6 (46-53), 7 (52-58), 8 (58-65),
9 (65-70), 10 (70-73), 11 (74-76), 12 (76-82),
13 (82-89), 14 (90-95), 15 (95-100), 16 (100-104),
17 (105-106), 18 (107-116), 19 (116-123),
20 (124-136), 21 (136-137), 22 (139-143),
23 (139-150);
Texture : APHANITIC AND TRACHYTIC, BRECCIA, HOLOCRYSTALLINE(?)
AND VERY FINE-GRAINED, SECTION IS BRECCIATED (GREEN
BLACK 5GY2/2) ALTERED GLASS FRAGMENTS (0.1 TO CA
1CM) AND BASALT FRAGMENTS (1 TO CA 4CM) WITH GLASSY
MARGINS ON AT LEAST ONE SIDE, INTRUSIVE GLASS IN PCE
14, SPARSE PLAG GLOMEROPHENOS (CA 1MM);
Structure : VEINS ARE <1-3MM WITH CALCITE AND SOME CELADONITE ?;
Comments : MEDIUM DARK GREY (N4), NEAR FRACTURE DARK GREEN GREY
(5G5/1) TO GREEN BLACK (5G3/1), BRECCIA IS CEMENTED
BY CALCITE AND SOME CELADONITE (?) FROM 105-135CM,
COOLING UNITS ARE 0-64CM AND 64-100CM AND 136-12CM
(OF SECTION 3), PCES THAT GO TOGETHER ARE PCES 3-7
INCLUSIVE AND 9-12 INCLUSIVE AND 14-15+18-19+21-23
INCLUSIVE;
Vesicles : Size(mm): 0.1 Percent:
Location: Filling: CELAD
VESICLES MAY BE FILLED WITH CELAD(?);
Phenocrysts: PLAGIOCLASE
SPARSE PLAG GLOMEROPHENOS;
Groundmass : PLAGIOCLASE
SUBPARALLEL PLAG LATHS;
Replacement: CELADONITE
ID CELAD AS CEMENT OR IN VEINS AND VESICLES
QUESTIONABLE;
CALCITE
GLASS
ALTERED GLASS FRAGMENTS (0.1-CA 1CM) AND BASALT
FRAGMENTS WITH GLASSY MARGINS ON AT LEAST ONE
SIDE, 3X5MM PATCH OF BLACK INTRUSIVE GLASS IN PCE
14;
Leg : 32 Top/Bottom Interval(mm): 0/1500 Analyst: Marshall, M.
Hole: 307 Sample Midpoint (m) : 311.50
Core: 13 Top of Core Depth (m) : 307.00
Sect: 3 Top of Section Depth(m): 310.00
LITHOLOGY: ALTERED BASALT AND BRECCIA;
Piece No. : PCES 1 (0-7), 2 (7-13), 3 (14-17), 4 (17-21),
5 (21-27), 6 (27-31), 7 (32-34), 8 (35-41),
9 (42-46), 10 (47-51), 11 (51-57), 12 (58-65),
13 (65-72), 14 (73-80), 15 (80-91), 16 (92-97),
17 (99-106), 18 (106-112), 19 (113-126),
20 (126-131), 21 (132-137), 22 (138-148),
23 (138-150);
Texture : APHANITIC, SECTION IS BRECCIA (GREEN BLACK 5GY2/2),
0.1-1CM FRAGMENTS OF ALTERED GLASS AND 1->4CM OF
FRAGMENTS OF ALTERED BASALT, MOST HAVING GLASS ON AT
LEAST ONE SURFACE, BLACK INTRUSIVE GLASS PATCHES
(BROWN, CA ISOTROPIC IN TS AND 1-10MM) AT BASE OF
ALTERED GLASS RIMS ON PCES 7+10;
Structure : VEINS ARE <1-3MM OF CALCITE AND SOME CELAD(?);
Alteration : ALTERED GLASS RIMS ON PCE 7+10, ALTERED BRECCIA
AND BASALT;
Comments : COOLING UNITS FROM 136CM (SECTION 2) TO PCE 1 AND
132-150CM, SPECIAL PHOTOS ARE PCES 2+9+13+20, PCES
THAT GO TOGETHER ARE PCES 1+2+23(FROM SECT 2), COLOR
OF BASALT IS LIGHT GREEN GREY (5G7/1) TO GREEN GREY
(5GY6/1), FRAGMENTS CEMENTED WITH CALCITE OR
CELADONITE(?) FROM 10-130CM;
Vesicles : Size(mm): 2X5 Percent:
Location: Filling: CALCITE,QUARTZ
VUG 2X5CM AND LINED WITH CALCITE AND DRUSY QUARTZ;
Replacement: GLASS
MOST FRAGMENTS HAVE GLASS ON AT LEAST ONE SURFACE,
BLACK INTRUSIVE GLASS (BROWN, CA ISOTROPIC IN TS)
PATCHES (1-10MM) AT BASE OF ALTERED GLASS RIMS ON
PCES 7+10;
CELADONITE
ID CELAD IN VEINS AND AS CEMENT UNCERTAIN;
QUARTZ
DRUSY;
CALCITE
Leg : 32 Top/Bottom Interval(mm): 0/ 270 Analyst: Marshall, M.
Hole: 307 Sample Midpoint (m) : 311.77
Core: 13 Top of Core Depth (m) : 307.00
Sect: CC Top of Section Depth(m): 311.60
LITHOLOGY: ALTERED BASALTIC BRECCIA;
Piece No. : PCES 1 (0-6), 2 (6-13), 3 (14-21), 4 (21-27);
Texture : APHANITIC, BRECCIA, THE GREEN CELAD AND LIGHT
VARIOLITIC SHADED BANDS IN THE PREVIOUS
REPRESENTATIONS INDICATE "GLASSY CRUSTS", ALL FOUR
PCES ARE BRECCIA AS ABOVE, GLASSY SELVAGES IN ABOVE
SECTIONS ARE TYPICALLY 0.5-2CM GREEN BLACK (5GY2/1)
FLAKY WAXY CELAD(?) INTERLAYERED WITH CALCITE VEINS
AND THEN A 1-2MM ZONE FROM WHERE LIGHT GREY VARIOLES
FIRST APPEAR IN THE GREEN GLASS TO WHERE THERE IS NO
GLASS APPARENT BETWEEN CLOSE PACKED VARIOLES;
Structure : VEINS ARE <1-3MM CALCITE AND CELAD(?);
Alteration : ALTERED BASALTIC BRECCIA;
Comments : THE GREEN CELAD AND LIGHT VARIOLITIC ZONE
(FREQUENTLY WITH A GREYISH PURPLE 5P4/2 TINT) MAKE A
GOOD RECOGNIZABLE MARKER OF FORMER GLASSY CRUSTS,
COLOR OF BASALT IS GREEN GREY (5GY6/1);
Replacement: GLASS
FORMER GLASSY CRUST AS SEEN BY GREEN CELAD AND
BRIGHT VARIOLITIC ZONE, GLASSY CRUSTS ARE
INDICATED BY SHADED BANDS;
CELADONITE
ID CELAD INTERLAYERED WITH CALCITE VEINS AND CELAD
IN VEINS UNCERTAIN;
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