Leg : 91 Top/Bottom Interval(mm): 0/ 110 Analyst: Natland, J.
Hole: 595B Sample Midpoint (m) : 66.08
Core: 1 Top of Core Depth (m) : 65.90
Sect: CC Top of Section Depth(m): 66.07
LITHOLOGY: BASALT (POSSIBLY ANDESITE);
Piece No. : PCE 1 (5-10);
Texture : APPEARS SPHERULITIC;
Alteration : MOD
GRAY ALTERED RINDS;
SLIGHT
YELLOWISH GRAY INNER CORES ARE LESS ALTERED;
Comments : CORED INTERVAL WAS 5695.9-5703.3M BUT ONLY THIS PIEC
FROM BASEMENT WAS ENCOUNTERED IN CORE CATCHER, COLOR
IS GRAY TO PALE YELLOWISH GRAY, SKETCH IN INITIAL
CORE DESCRIPTIONS, DIMENSIONS 3X4CM;
Replacement: FERROUS OXIDE
MANGANESE OXIDE
FE.OXIDE and MN.OXIDE FORM THIN CRUSTS ON EXTERIOR
SURFACES;
Leg : 91 Top/Bottom Interval(mm): 0/ 70 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 73.07
Core: 2 Top of Core Depth (m) : 73.00
Sect: 1 Top of Section Depth(m): 73.00
LITHOLOGY: BASALT (POSSIBLY ANDESITE);
SAME LITHOLOGY AS SITE 595A CORE 10-1;
Piece No. : PCE 1 (3-7);
Texture : FINE-GRAINED;
Alteration : SLIGHT
POSSIBLE SLIGHT ALTERATION RIND TO ANOTHER PCE;
Comments : LIGHT BROWNISH GRAY(10YR 6/2), SIMILAR TO SITE 595A
CORE 10-1--PROBABLY FELL DOWN HOLE;
Leg : 91 Top/Bottom Interval(mm): 80/1500 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 74.50
Core: 2 Top of Core Depth (m) : 73.00
Sect: 1 Top of Section Depth(m): 73.08
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS SITE 595A CORES 11&12;
Piece No. : PCE 2A (8-17), 2B (15-19), 3 (20-35), 4 (37-43),
5A (43-52), 5B (50-55), 5C (55-65), 6 (67-71),
7 (73-75), 8 (77-82), 9 (83-90), 10 (91-94),
11A (95-103), 11B (100-109), 11C (108-117),
12 (119-122), 13 (123-125), 14A (126-133),
14B (133-150);
Texture : APHYRIC, FINE-GRAINED;
Structure : EXTENSIVELY FRACTURED, FRACTURES FILLED WITH CALCITE
and CELADONITE and FE.HYDROXIDE, FRACTURES/VEINS ARE
POLYGONAL ANASTOMOSING and VARY FROM 0.5-5MM THICK,
PCE 9 SHOWS EXTENSIVE FRACTURING AND CONTAINS AN
APPARENT VEIN MINERALOGY;
Alteration : SLIGHT
SLIGHT COLOR VARIATION PARALLEL TO FRACTURE/VEINS,
BANDING WIDTH IS 5-10MM LEAVING "UNALTERED" LIGHTER GRAY CORES TO FRACTURE-BOUND BLOCKS, ROCK
PARALLEL TO VEINING IS DARKER GRAY and COMMONLY
SHOWS BROWNISH OR YELLOWISH STAINING;
Comments : NO COOLING UNIT BOUNDARIES APPARENT, COLOR IS DARK
GRAY(5Y 4/1) WITH A SLIGHT GREENISH TO OLIVE TINT ON
SOME SURFACES;
Vesicles : Size(mm): Percent: 0
Replacement: CALCITE
CELADONITE
FERROUS HYDROX MINS
ALTERATION MINERALS FILL FRACTURES;
Leg : 91 Top/Bottom Interval(mm): 0/ 530 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 75.03
Core: 2 Top of Core Depth (m) : 73.00
Sect: 2 Top of Section Depth(m): 74.50
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS SEC 1;
Piece No. : PCE 1 (3-7), 2 (9-19), 3 (20-26), 4A (29-33),
4B (33-41), 5 (43-48), 6 (49-52);
Texture : APHYRIC;
Alteration : SLIGHT;
Comments : SEE SEC 1 DESCRIPTION, POSSIBLE COOLING UNIT
BOUNDARY AT 43-50CM;
Leg : 91 Top/Bottom Interval(mm): 530/ 620 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 75.12
Core: 2 Top of Core Depth (m) : 73.00
Sect: 2 Top of Section Depth(m): 75.03
LITHOLOGY: BASALT;
CALCITE;
Piece No. : PCE 7 (55-61);
Structure : PIECE OF VEIN FILL, CONTAINS A LAYER OF CALCITE AND
A LAYER OF CALCITE and BASALT and PALE GREEN MINERAL AND
A LAYER OF DARK GREEN GLASS SHARDS;
Alteration : SLIGHT
CONTAINS FRAGMENTS OF ALTERED GLASS;
Comments : DIMENSIONS 3X4CM;
Replacement: CALCITE
Leg : 91 Top/Bottom Interval(mm): 0/1500 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 83.00
Core: 3 Top of Core Depth (m) : 81.50
Sect: 1 Top of Section Depth(m): 81.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (3-14), 2A (15-21), 2B (20-30), 3A (31-48),
3B (47-68), 3C (67-72), 4A (80-89), 4B (90-101),
4C (100-104), 5A (105-113), 5B (112-130),
6 (131-148);
Texture : APHYRIC, FINE-GRAINED, BLACK BLEBS IN PCE 3A, GRAIN
SIZE BECOMES FINER TOWARD CONTACTS;
Structure : FILLED FRACTURES POLYGONAL ANASTOMOSING WITH WIDTH
0.5-5MM (LARGE FRACTURE IN PCES 3A&B);
Alteration : SLIGHT
ALTERATION DEFINED BY DARK BLUE-GRAY(5B 4/1) HALOS
PARALLEL TO CRACKS and VEINS;
Comments : DARK GRAY(5Y 4/1), COOLING UNIT BOUNDARIES DEFINED
BY SUBTLE BUT DISTINCT DIFFERENCES IN GRAIN SIZE (AT
15&80&130CM), INTERVAL 80-130CM MAY BE A SINGLE
COOLING UNIT;
Replacement: CALCITE
CELADONITE
FERROUS HYDROX MINS
FERROUS OXIDE
ALTERATION MINERALS IN FRACTURES;
MANGANESE OXIDE
DARK PURPLISH MN STAIN IN PCE 4B;
Leg : 91 Top/Bottom Interval(mm): 0/1250 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 84.25
Core: 3 Top of Core Depth (m) : 81.50
Sect: 2 Top of Section Depth(m): 83.00
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS SEC 1;
Piece No. : PCE 1A (2-20), 1B (19-33), 1C (32-40), 2 (42-47),
3A (49-62), 3B (62-71), 3C (71-90), 4 (92-97),
5A (99-111), 5B (110-117), 6 (119-125);
Texture : APHYRIC, FINE-GRAINED;
Comments : SEE SEC 1 DESCRIPTION, COOLING UNIT BOUNDARIES AT 42
and 62CM, COLOR IS DARK GRAY(5Y 4/1);
Leg : 91 Top/Bottom Interval(mm): 0/1350 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 88.75
Core: 4 Top of Core Depth (m) : 87.40
Sect: 1 Top of Section Depth(m): 87.40
LITHOLOGY: APHYRIC BASALT;
CORE 4 HAS SAME LITHOLOGY AS CORE 3;
Piece No. : PCE 1A (2-16), 1B (15-40), 1C (37-52), 2 (53-57),
3 (58-64), 4 (65-74), 5 (75-82), 6 (84-89),
7 (91-97), 8 (98-107), 9 (108-115), 10 (116-129),
11 (130-135);
Texture : APHYRIC, FINE-GRAINED, BECOMES APHANITIC AND SHADES
TO BLACK AT COOLING UNIT BOUNDARIES;
Structure : EXTENSIVELY FRACTURED, FRACTURES FILLED WITH CALCITE
and CELADONITE and FE.OXIDES, FILLED VEINING POLYGONAL
ANASTOMOSING AND VARYING IN THICKNESS FROM 0.1-5MM;
Alteration : SLIGHT
ALTERATION DEFINED BY DARK BLUE-GRAY ALTERATION
HALOS PARALLEL TO CRACKS and VEINS;
Comments : DARK GRAY(5Y 4/1), COOLING UNIT BOUNDARIES DEFINED
BY GRAIN SIZE and COLOR (AT 100&122CM);
Replacement: CALCITE
CELADONITE
FERROUS OXIDE
FRACTURES FILLED WITH CALCITE and CELADONITE &
FE.OXIDES;
MANGANESE OXIDE
SOME SLIGHT DARK PURPLISH COLOR TO VEINS LOCALLY
SUGGEST THE PRESENCE OF MANGANESE;
Leg : 91 Top/Bottom Interval(mm): 0/1450 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 90.35
Core: 4 Top of Core Depth (m) : 87.40
Sect: 2 Top of Section Depth(m): 88.90
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS SEC 1;
Piece No. : PCE 1A (1-16), 1B (15-32), 2A (33-46), 2B (45-62),
3 (63-73), 4A (75-94), 4B (94-97), 4C (97-113),
4D (114-127), 5 (130-144);
Structure : 5MM THICK BANDED MN VEIN FILLED WITH FE.HYDROXIDES &
CALCITE INSIDE A DARK GREEN BAND INSIDE A PURPLISH
MN? BAND INSIDE A PALE GRAY BAND;
Alteration : FRESH TO MOD;
Comments : COOLING UNIT BOUNDARY AT 128CM, COLOR IS DARK GRAY,
SKETCH OF PCE 4A MN BANDED VEIN IN INITIAL CORE
DESCRIPTIONS, SEE SEC 1 DESCRIPTION;
Replacement: CALCITE
CELADONITE
FERROUS HYDROX MINS
MANGANESE OXIDE
DEEPER IN THE HOLE--LESS CALCITE TO FRACTURE FILL
and MORE FE.HYDROXIDES and CELADONITE and INCREASING
OCCURRENCES OF MN STAINING;
Leg : 91 Top/Bottom Interval(mm): 0/1500 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 91.90
Core: 4 Top of Core Depth (m) : 87.40
Sect: 3 Top of Section Depth(m): 90.40
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS SEC 1;
Piece No. : PCE 1 (1-10), 2A (11-23), 2B (24-28), 3A (30-42),
3B (42-59), 3C (59-87), 3D (86-115), 4A (115-122),
4B (122-150);
Comments : DARK GRAY, SEE SEC 1 DESCRIPTION;
Replacement: MANGANESE OXIDE
MN STAINING PCES 3A&C;
Leg : 91 Top/Bottom Interval(mm): 0/1500 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 98.00
Core: 5 Top of Core Depth (m) : 96.50
Sect: 1 Top of Section Depth(m): 96.50
LITHOLOGY: APHYRIC BASALT;
CORE 5 HAS SAME LITHOLOGY AS CORES 3&4;
Piece No. : PCE 1A (1-15), 1B (13-42), 2 (44-47), 3 (49-55),
4 (56-60), 5 (62-78), 6 (82-100), 7 (102-105),
8 (107-113), 9 (115-121), 10 (123-130),
11 (132-139), 12 (141-150);
Texture : APHYRIC, FINE-GRAINED, BECOMES APHANITIC AND SHADES
TO BLACK AT COOLING UNIT BOUNDARIES;
Structure : FILLED VEINING IS POLYGONAL ANASTOMOSING AND VARIES
IN THICKNESS FROM 0.1-5MM, FRACTURES FILLED WITH
CALCITE and CELADONITE and FE.HYDROXIDES;
Alteration : SLIGHT
ALTERATION DEFINED BY DARKER HALOS AND COLOR
BANDING PARALLEL TO CRACKS and VEINS;
Comments : COOLING UNIT BOUNDARIES AT 50&82CM DEFINED BY GRAIN
SIZE AND COLOR, DARK GRAY(5Y 4/1);
Replacement: CALCITE
CELADONITE
FERROUS HYDROX MINS
ALTERATION MINERALS FILL FRACTURES;
Leg : 91 Top/Bottom Interval(mm): 0/1500 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 99.50
Core: 5 Top of Core Depth (m) : 96.50
Sect: 2 Top of Section Depth(m): 98.00
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS SEC 1;
Piece No. : PCE 1A (2-15), 1B (9-20), 2 (22-30), 3A (31-41),
3B (39-50), 4 (50-55), 5 (56-60), 6A (62-65),
6B (66-77), 7A (77-92), 7B (91-112), 8 (113-117),
9 (119-136), 10 (137-150);
Texture : APHYRIC, FINE-GRAINED;
Alteration : FRESH TO MOD;
Comments : COOLING UNIT BOUNDARIES AT 30&78&111CM, DARK GRAY
(5Y 4/1), SEE SEC 1 DESCRIPTION;
Replacement: MANGANESE OXIDE
MANGANESE STAINING AROUND VEINS IN PCES 9&10;
Leg : 91 Top/Bottom Interval(mm): 0/1500 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 107.10
Core: 6 Top of Core Depth (m) : 105.60
Sect: 1 Top of Section Depth(m): 105.60
LITHOLOGY: APHYRIC BASALT;
CORE 6 HAS SAME LITHOLOGY AS CORES 3-5;
Piece No. : PCE 1A (2-11), 1B (9-20), 2 (21-25), 3 (26-30),
4 (34-47), 5 (50-60), 6 (62-77), 7 (79-82),
8 (83-85), 9 (86-93), 10 (94-98), 11 (100-110),
12 (112-122), 13 (122-134), 14 (134-144),
15 (145-150);
Texture : APHYRIC, FINE-GRAINED, BECOMES APHANITIC AND SHADES
TO BLACK AT BOUNDARIES;
Structure : FRACTURES FILLED WITH CALCITE and CELADONITE and FE.
HYDROXIDE, FRACTURES POLYGONAL ANASTOMOSING AND
VARYING IN THICKNESS FROM 0.1-5MM;
Alteration : SLIGHT
ALTERATION DEFINED BY DARKER HALOS OR BANDING
PARALLEL TO VEINS, SLIGHT TRACE OF LOCAL PURPLE
STAINING, ALTERED GLASS AT BOUNDARIES;
Comments : COOLING UNIT BOUNDARIES AT 2&35&135CM DEFINED BY
GRAIN SIZE AND COLOR, DARK GRAY(5Y 4/1), SKETCH OF
PIECE 4 BANDING IN INITIAL CORE DESCRIPTIONS;
Replacement: CALCITE
CELADONITE
FERROUS HYDROX MINS
ALTERATION MINERALS FILL FRACTURES;
Leg : 91 Top/Bottom Interval(mm): 0/1500 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 108.60
Core: 6 Top of Core Depth (m) : 105.60
Sect: 2 Top of Section Depth(m): 107.10
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS SEC 1;
Piece No. : PCE 1 (3-5), 2 (7-13), 3 (14-20), 4A (22-30),
4B (29-34), 5 (35-40), 6 (41-55), 7 (56-62),
8 (64-74), 9 (76-90), 10 (93-97), 11 (99-105),
12 (108-111), 13 (114-117), 14 (118-123),
15 (125-133), 16 (134-143), 17 (144-148);
Alteration : SLIGHT
REDDISH STAINING/ALTERATION PRODUCT PRESENT ON
SOME FRACTURE/VEIN SURFACES;
Comments : COOLING UNIT BOUNDARIES AT 50&65CM, SEE SEC 1
DESCRIPTION;
Replacement: MANGANESE OXIDE
MN STAINING IN PIECES 6&8&9;
Leg : 91 Top/Bottom Interval(mm): 0/ 500 Analyst: Rosencrantz, E.
Hole: 595B Sample Midpoint (m) : 109.10
Core: 6 Top of Core Depth (m) : 105.60
Sect: 3 Top of Section Depth(m): 108.60
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS SEC 1;
Piece No. : PCE 1 (4-6), 2 (9-16), 3 (18-25), 4A (26-31),
4B (31-36), 5 (38-48);
Alteration : SLIGHT TO MOD;
Comments : SEE SEC 1 DESCRIPTION;
Leg : 91 Top/Bottom Interval(mm): 0/ 500 Analyst: Natland, J.
Hole: 595B Sample Midpoint (m) : 115.20
Core: 7 Top of Core Depth (m) : 114.70
Sect: 1 Top of Section Depth(m): 114.70
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS CORES 3-6;
Piece No. : PCE 1 (3-10), 2 (12-16), 3A (18-25), 3B (25-38),
3C (38-40), 3D (40-50);
Texture : APHYRIC, APHANITIC;
Structure : HIGHLY FRACTURED, VEINED WITH GREEN CLAY and CALCITE &
FE.HYDROXIDES;
Alteration : SLIGHT
0.5-1.0CM DARK ALTERATION HALOS NEXT TO FRACTURES
SURROUND LIGHTER GRAY OR PALE BROWNISH GRAY LESS
ALTERED ZONES;
Comments : COLOR IS DARK GRAY;
Replacement: CLAY
CALCITE
FERROUS HYDROX MINS
IN VEINS;
Leg : 91 Top/Bottom Interval(mm): 500/1500 Analyst: Natland, J.
Hole: 595B Sample Midpoint (m) : 116.20
Core: 7 Top of Core Depth (m) : 114.70
Sect: 1 Top of Section Depth(m): 115.20
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 4 (52-56), 5 (59-62), 6 (65-67), 7 (70-75),
8 (76-83), 9 (85-90), 10 (92-102), 11 (105-108),
12A (110-117), 12B (114-122), 12C (117-122),
12D (122-130), 12E (130-140), 13 (143-150);
Texture : APHYRIC, MORE PRONOUNCED ZONES OF SPHERULITES OR
VARIOLITES, COARSER CRYSTALLINITY FOR GIVEN DISTANCE
FROM GLASS, SEVERAL PROMINENT GLASSY ZONES IN CORE
(IN PIECES 8&12E&13) WITH 1MM DIAMETER PLAG
SPHERULITES VISIBLE UNDER BINOCULAR SCOPE, BLOTCHY
ZONES OF COALESCED SHEAF AND RADIATING SPHERULITES
ARE 6-10CM FROM GLASS,NO OL EVIDENT;
Alteration : MOD
ALTERATION HALOS SIMILAR TO THOSE IN PCES 1-3 OF
SAME SECTION, HALOS DARKER GRAY NEXT TO THIN VEINS
AND REDDER NEXT TO LARGER ONES;
Comments : LIGHTER COLOR THAN CORES 3-6, SPHERULITIC ZONES ARE
BLOTCHY PURPLE and GRAY, DARK SHADING NEAR GLASS OR
COOLING UNIT BOUNDARIES (AT 50&80CM);
Groundmass : OLIVINE ( 0%)
Replacement: FERROUS HYDROX MINS
IN ALTERATION HALOS;
Leg : 91 Top/Bottom Interval(mm): 0/1500 Analyst: Natland, J.
Hole: 595B Sample Midpoint (m) : 117.70
Core: 7 Top of Core Depth (m) : 114.70
Sect: 2 Top of Section Depth(m): 116.20
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS LOWER PART OF SEC 1;
Piece No. : PCE 1A (2-5), 1B (5-10), 1C (10-22), 1D (23-25),
1E (20-30), 2A (33-40), 2B (40-44), 3A (45-50),
3B (49-53), 4 (56-59), 5A (60-66), 5B (66-70),
6 (72-77), 7A (79-91), 7B (91-99), 7C (96-112),
7D (112-120), 7E (120-135), 8 (138-140),
9 (143-145), 10 (147-150);
Texture : APHYRIC, PROMINENT GLASS ZONES IN PCES 5B&6&9&10,
VARIOLITIC ZONES IN PCES 2&3&7;
Structure : LARGE CALCITE VEINS IN PCES 1C&5A&7A&D&E, FRACTURED
SURFACE ON PCE 1C;
Alteration : MOD TO EXT
SIMILAR TO LOWER PART OF SEC 1, CURIOUS BLEACHED
ZONES 2-3MM WIDE NEXT TO CRACKS IN PCES 5-7,
INTERVALS 10-13 and 45-55 and 82-89 and 104-110 &
122-125 and 133-135CM ARE EXTENSIVELY ALTERED--
OTHERS ARE MODERATE;
Comments : PCE 7A-E IS ONE COOLING UNIT;
Replacement: CALCITE
IN VEIN;
Leg : 91 Top/Bottom Interval(mm): 0/1050 Analyst: Natland, J.
Hole: 595B Sample Midpoint (m) : 118.75
Core: 7 Top of Core Depth (m) : 114.70
Sect: 3 Top of Section Depth(m): 117.70
LITHOLOGY: APHYRIC BASALT;
SAME LITHOLOGY AS SEC 2;
Piece No. : PCE 1 (2-5), 2 (7-10), 3 (14-16), 4 (17-30),
5 (33-36), 6 (40-45), 7 (48-50), 8 (52-56),
9 (58-66), 10 (70-75), 11 (78-83), 12 (86-90),
13A (92-96), 13B (96-104);
Texture : APHYRIC, VARIOLITIC, GLASS ZONES IN PCES 1-2&5;
Alteration : MOD TO EXT
NARROW BLEACHED ZONES IN PCES 13A-B, PCES 1-5 &
10-13 ARE MOD, PCES 6-9 ARE EXT;
Comments : PART OR MOST OF 4 COOLING UNITS PRESENT WITH
BOUNDARIES AT 35&77&90CM, SEE SEC 2 DESCRIPTION;
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