Leg : 49 Top/Bottom Interval(mm): 0/ 550 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 80.05
Core: 7 Top of Core Depth (m) : 72.00
Sect: 6 Top of Section Depth(m): 79.50
LITHOLOGY: CALCAREOUS SANDY MUD;
Leg : 49 Top/Bottom Interval(mm): 550/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 81.00
Core: 7 Top of Core Depth (m) : 72.00
Sect: 6 Top of Section Depth(m): 80.05
LITHOLOGY: BASALT;
Piece No. : PCE 2 (37-45);
Texture : FINE-GRAINED ZONE 1CM THICK BELOW GLASSY MARGIN;
Alteration : SLIGHTLY;
Comments : GLASSY CONTACT ZONE WITH SEDIMENT (CONTAINING
FORAMS) ON TOP - GLASSY MARGIN 2MM THICK, TOP OF
BASALT LAVA FLOW;
Vesicles : BELOW GLASSY ZONE IS NON-VESICULAR ZONE 1CM THICK
- LATER IN PCE LAVA BECOMES VESICULAR;
Leg : 49 Top/Bottom Interval(mm): 550/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 81.00
Core: 7 Top of Core Depth (m) : 72.00
Sect: 6 Top of Section Depth(m): 80.05
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCE 3 (46-54), 4 (54-63), 5 (63-75), 6 (75-84),
7 (85-96), 8 (97-112), 9 (112-123), 10 (123-133),
11 (133-150);
Texture : PHYRIC, FINE TO MEDIUM-GRAINED;
Alteration : SLIGHTLY
Comments : HYDROTHERMALLY ALTERED;
Vesicles : Size(mm): Percent: >5
Location: Filling: PYRITE,ZEOL,SMEC
IN PCE 3;
Size(mm): Percent: <5
Location: Filling: PYRITE,ZEOL,SMEC
IN PCES 4-11, SMALLER THAN IN PCE 3, VESICLES
EMPTY OR PARTIALLY LINED - SOME WITH PYRITE AND
OTHERS WITH PLATY ZEOL? AND SMEC;
Phenocrysts: PLAGIOCLASE
Size(mm): TO 5
Replacement: ZEOLITE
ID UNCERTAIN, PLATY;
SMECTITE
PYRITE
Leg : 49 Top/Bottom Interval(mm): 0/ 900 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 81.90
Core: 7 Top of Core Depth (m) : 72.00
Sect: 7 Top of Section Depth(m): 81.00
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCE 1 (0-20), 2 (20-35), 3 (35-44), 4 (45-56),
5 (57-65), 6 (66-74), 7 (83-90);
Texture : SPARSELY PHYRIC, MEDIUM TO COARSE-GRAINED, PLAG
MICROPHENOS - THIS REPRESENTS MASSIVE CENTER OF
FLOW, FINE-GRAINED ZONE IN PCE 3;
Alteration : SLIGHTLY;
Comments : THIS DESCRIPTION INCLUDES THE CORE CATCHER;
Vesicles :
Location: Filling: SMEC,ZEOLITE
Location: Filling: HEULANDITE
LESS VESICULAR THAN 7-6 AND VESICLES MORE INFILLED
- ESPECIALLY WITH SMEC, IN PCE 1 VESICLES A ZEOL
WHICH HAS COFFIN-SHAPED CRYSTALS CAN BE
DISTINGUISHED WITH BINOCULAR MICROSCOPE - MAY BE
HEULANDITE (A ZEOLITE FOUND IN LOW TO MEDIUM GRADE
ZEOL ZONES OF ICELAND), VESICULAR ZONE IN PCE 3
CUTTING MASSIVE BASALT - REPRESENTS GAS BUBBLE
TRAIL, BLUE SMEC? IN VESICLES;
Phenocrysts: PLAGIOCLASE ( 2-3%)
MICROPHENOS;
Replacement: ZEOLITE
BLUE, ID UNCERTAIN;
HEULANDITE
ID UNCERTAIN;
SMECTITE
Leg : 49 Top/Bottom Interval(mm): 0/ 500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 82.00
Core: 8 Top of Core Depth (m) : 81.50
Sect: 1 Top of Section Depth(m): 81.50
LITHOLOGY: BASALT;
Piece No. : PCE 1 (0-16), 3 (26-32), 5 (44-50);
Structure : FLOW BANDING IN PCE 5, SEVERAL BASALT CHIPS;
Leg : 49 Top/Bottom Interval(mm): 0/ 500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 82.00
Core: 8 Top of Core Depth (m) : 81.50
Sect: 1 Top of Section Depth(m): 81.50
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCE 2 (16-25);
Texture : PHYRIC;
Vesicles : Size(mm): 1 Percent: 5
VESICULAR;
Phenocrysts: PLAGIOCLASE ( 50%)
Size(mm): TO 4
Leg : 49 Top/Bottom Interval(mm): 0/ 500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 82.00
Core: 8 Top of Core Depth (m) : 81.50
Sect: 1 Top of Section Depth(m): 81.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
Piece No. : PCE 4 (32-43);
Texture : MOD PHYRIC, FINE-GRAINED;
Vesicles : Size(mm): Percent: 5
Location: Filling:
Shape : ELONGATED
LARGE SIZE AND SOME ELONGATED;
Phenocrysts: PLAGIOCLASE ( >5%)
Size(mm): TO 4
Leg : 49 Top/Bottom Interval(mm): 510/ 610 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 82.11
Core: 8 Top of Core Depth (m) : 81.50
Sect: 1 Top of Section Depth(m): 82.01
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCE 6 (51-61);
Texture : PHYRIC, FINE-GRAINED;
Structure : FLOW BANDING;
Alteration : SLIGHTLY;
Comments : GNDMASS COLOR LIGHT GRAY, LOW POTASSIUM THOLEIITE?,
FLOW BOUNDARIES? AT TOP AND BOTTOM OF SECTION;
Vesicles : Size(mm): 1 Percent: >5
VESICULAR;
Phenocrysts: PLAGIOCLASE
MICROPHENOS;
OLIVINE
Size(mm): TO 2
Leg : 49 Top/Bottom Interval(mm): 620/1200 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 82.70
Core: 8 Top of Core Depth (m) : 81.50
Sect: 1 Top of Section Depth(m): 82.12
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 7 (62-71), 8 (72-80), 9 (80-89), 10 (89-96),
11 (96-105), 12 (106-111), 13 (111-120);
Texture : APHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY;
Vesicles : Size(mm): 3-4 Percent: >10
Location: Filling: SMEC
SOME VESICLES HAVE SMEC LINING;
Replacement: SMECTITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 92.50
Core: 9 Top of Core Depth (m) : 91.00
Sect: 1 Top of Section Depth(m): 91.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-8), 2 (9-17), 3 (17-24), 4 (24-31),
5 (32-37), 6 (38-45), 7 (45-55), 8 (55-61),
9 (62-68), 10 (69-76), 11 (77-83), 12 (83-93),
13 (94-101), 14 (102-110), 15 (110-119),
16 (119-126), 17 (127-137), 18 (138-150);
Texture : APHYRIC, FINE-GRAINED;
Structure : HORIZONTAL FLOW STRUCTURES - VESICLE CONCENTRATIONS
IN PCES 8-10 - THESE CORRESPOND TO ZONES OF
OXIDATION - SUCH HORIZONTAL STRUCTURES CONFIRM THAT
THESE ARE FLOWS AND NOT DIKES, CALCITE AND BROWN
FE.OX VEINS IN PCES 7-8+10-12+14+16+18;
Alteration : SLIGHTLY;
Comments : VERY DOUBTFUL THAT OXIDIZED ZONES ARE FLOW MARGINS -
JUST LATE FRACTURES WITHIN LAVA OR BOUNDARIES WITHIN
A COMPOUND UNIT;
Vesicles : Size(mm): 1-3 Percent: 30-35
Location: Filling: CALCITE,FE.OX
Location: Filling: SMEC
HIGHLY VESICULAR, VESICLES UP TO 5MM IN PCES
16-18, OXIDIZED ZONES ASSOCIATED WITH CALCITE AND
BROWN IRON OXIDE FILLING VESICLES IN PCES 7-8+10-
12+14+16+18, VESICLES LINED WITH SMEC, VESICLE
CONCENTRATIONS IN PCES 8-10;
Replacement: CALCITE
SMECTITE
FERROUS MN OXIDE
BROWN;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 94.00
Core: 9 Top of Core Depth (m) : 91.00
Sect: 2 Top of Section Depth(m): 92.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-7), 2 (7-17), 3 (17-24), 4 (24-35),
5 (35-43), 6 (44-53), 7 (53-60), 8 (60-65),
9 (65-72), 10 (73-81), 11 (81-88), 12 (89-95),
13 (95-105), 14 (105-112), 15 (113-120),
16 (120-125), 17 (126-133), 18 (134-141),
19 (142-150);
Texture : APHYRIC;
Structure : IRON-STAINED CALCITE VEINS;
Alteration : MOD
MORE EVIDENCE OF HYDROTHERMAL ALTERATION THAN IN
PREVIOUS SECTIONS;
Vesicles : Size(mm): Percent: <20
Location: Filling: SMEC,CALCITE
IN PCES 1-9 AND 18-19;
Size(mm): Percent: >30
Location: Filling: SMEC,CALCITE
SMALLER VESICLES IN PCES 9-17, MORE SMEC IN
VESICLES THAN PREVIOUS SECTIONS, A FEW VESICLES
FILLED WITH CALCITE;
Replacement: CALCITE
IRON STAINED CALCITE IN VEINS;
SMECTITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 95.50
Core: 9 Top of Core Depth (m) : 91.00
Sect: 3 Top of Section Depth(m): 94.00
LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
Piece No. : PCE 1 (0-12), 2 (12-22), 3 (23-30), 4 (30-38),
5 (38-48), 6 (49-56), 7 (56-64), 8 (65-75),
9 (75-84), 10 (84-90), 11 (90-100), 12 (100-109),
13 (109-118), 14 (118-128), 15 (128-140),
16 (140-150);
Texture : MOD PHYRIC, PCES 9-11 SLIGHTLY COARSER GRAINED;
Structure : IN CUTTING CAVITY EXPOSED IN PCE 9 WHICH HAS
CRYSTALS OF ARAGONITE CONFIRMED BY RI AND OPTIC
ORIENTATION OF TWINS AND 2V, OL SETTLING INTO
LAYERS;
Alteration : MOD
IN PCES 1-13;
FRESH
IN PCES 14-16;
OL MICROPHENOS BLOWN OUT TO BROWN BY ALTERATION,
OL RICH ZONES SELECTIVELY ALTERED;
Comments : WHOLE SECTION BELONGS TO 1 FLOW UNIT EVEN THOUGH
OL CONTENT AND GRAIN SIZE AND DEGREE OF ALTERATION
VARY, CONTACT BETWEEN ALTERED AND FRESH BASALT
(GREEN-GRAY TO LIGHT GRAY) IN PCES 12-14;
Vesicles : Size(mm): Percent: >10
Location: Filling: SMEC
IN PCES 1-6;
Size(mm): Percent: <2
Location: Filling: CELAD,CALCITE
IN PCES 7-16, VESICLES FILLED WITH GREEN CELAD?
AND CALCITE;
Phenocrysts: PLAGIOCLASE ( <5%)
OLIVINE ( 1-2%)
Size(mm): 1-2
IN PCES 7-16;
Replacement: CALCITE
ARAGONITE
SMECTITE
CELADONITE
GREEN ID UNCERTAIN;
Leg : 49 Top/Bottom Interval(mm): 0/1380 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 101.88
Core: 10 Top of Core Depth (m) : 100.50
Sect: 1 Top of Section Depth(m): 100.50
LITHOLOGY: PLAG MOD PHYRIC BASALT;
VERY SIMILAR TO CORE 9-3;
Piece No. : PCE 1 (0-5), 2 (6-22), 3 (24-29), 4 (29-36),
5 (36-48), 6 (48-58), 7 (58-63), 8 (64-70),
9 (70-80), 10A (80-92), 10B (92-98), 10C (98-108),
10D (110-120), 11 (120-127), 12 (128-138);
Texture : MOD PHYRIC;
Alteration : MOD
OL RICH ZONES SELECTIVELY MORE ALTERED THAN OL
POOR ZONES, OL WEATHERED BROWN BUT ROCK HAS
GREENISH TINGE WHERE IT IS OL RICH;
Comments : CONTACT BETWEEN ALTERED AND LESS ALTERED BASALT IN
PCES 10B-10D, GNDMASS IS GREEN;
Vesicles : Size(mm): <1 Percent: 11
TWO SETS OF VESICLES (1%>1MM AND 10%<1MM) IN ALL
PCES EXCEPT PCE 1, VESICLE INFILLING CHANGES COLOR
FROM GREEN IN ALTERED LAYERS TO BLUE IN LESS
ALTERED, PCE 1 MIGHT BE VESICULAR TOP OF FLOW;
Phenocrysts: PLAGIOCLASE ( <5%)
Size(mm): TO 5
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 103.50
Core: 10 Top of Core Depth (m) : 100.50
Sect: 2 Top of Section Depth(m): 102.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-20), 3 (21-30), 4 (32-40),
5 (41-47), 6 (48-58), 7 (59-63), 8 (64-69),
9 (70-75), 10A (77-85), 10B (86-94), 11 (95-106),
12 (107-112), 13 (114-120), 14 (121-129),
15 (130-137), 16 (138-146);
Texture : APHYRIC, FINE-GRAINED, MICROPHENOS OF OL;
Alteration : MOD
SOME OF OL FRESH;
Vesicles : Size(mm): 0.3-0.5 Percent: 5-7
Location: Filling: SMEC,CELAD
VESICULAR, VESICLES LINED WITH BLUE-GRAY
MINERALS (SMEC? AND CELAD?);
Size(mm): 2-4 Percent:
IN PCES 3-4+11-15 VESICLE-RICH ZONES;
Phenocrysts: OLIVINE
Size(mm): <1
MICROPHENOS, SOME OL IS FRESH;
Replacement: SMECTITE
ID UNCERTAIN;
CELADONITE
ID UNCERTAIN;
PYRITE
SOME PCES CONTAIN PYRITE;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 105.00
Core: 10 Top of Core Depth (m) : 100.50
Sect: 3 Top of Section Depth(m): 103.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 1B (12-23), 2 (25-34), 3 (34-40),
4A (41-50), 4B (50-60), 4C (60-74), 5 (75-80),
6 (80-85), 7 (85-93), 8 (94-101), 9 (101-110),
10 (110-115), 11 (116-122), 12 (123-130),
13 (130-140), 14 (140-150);
Texture : APHYRIC, FINE-GRAINED;
Alteration : MOD;
Comments : NO FLOW CONTACTS APPARENT;
Vesicles : Size(mm): 1 Percent: 1-2
IN PCE 1A;
Size(mm): 1 Percent: 10-15
IN PCES 12-13;
Size(mm): 1 Percent: 1-2
IN PCE 14;
VESICULARITY INCREASES DOWNWARD DISCONTINUOUSLY,
VESICLES LINED WITH GREEN TO BLUE-GREEN
SECONDARY MINERALS, SOME VESICLES TO 3MM;
Groundmass : PLAGIOCLASE
PLAG LATHS OBVIOUS WITH BINOCULAR SCOPE;
OLIVINE ( RARE%)
RARE FRESH OL GRAINS;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 106.50
Core: 10 Top of Core Depth (m) : 100.50
Sect: 4 Top of Section Depth(m): 105.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-7), 2 (8-21), 3 (22-30), 4 (32-41),
5 (43-51), 6 (52-63), 7 (64-70), 8 (72-81),
9 (83-95), 10 (95-107), 11 (108-120), 12 (120-130),
13A (130-137), 13B (130-137), 14 (137-143),
15 (144-150);
Texture : APHYRIC, FINE-GRAINED, OL MICROPHENOS PRESENT IN
SOME PCES;
Structure : PYRITE FILLED CRACKS IN PCES 11-13, THIN CALCITE
VEIN IN PCE 7;
Alteration : MOD;
Vesicles : Size(mm): 0.2-0.5 Percent: 3-5
Location: Filling: PYRITE
IN PCES 2-3+11-14 PYRITE PARTLY FILLS VESICLES,
VESICLE RICH ZONES (SIZE 1-3MM) IN PCES 2+5+8+11-
12+15, VESICLES LINED WITH GRAY AND BLUE-GRAY
MINERALS, SOME VESICLES FILLED WITH DARK GRAY
MINERALS;
Phenocrysts: OLIVINE
OL MICROPHENOS IN SOME PCES;
Replacement: PYRITE
CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 108.00
Core: 10 Top of Core Depth (m) : 100.50
Sect: 5 Top of Section Depth(m): 106.50
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-18), 3 (18-30), 4 (30-40),
5 (40-50), 6 (51-57), 7 (57-64), 8 (64-70),
9 (70-80), 10 (80-90), 11 (90-98), 12 (98-109),
13 (110-118), 14 (118-125), 15 (126-135),
16 (135-140), 17 (141-150);
Texture : SPARSELY PHYRIC, FINE-GRAINED;
Alteration : MOD;
Comments : NO FLOW BOUNDARIES APPARENT, VERY UNIFORM - BUT NO
MASSIVE ROCK INDICATIVE OF INTERIOR OF A SINGLE
THICK FLOW;
Vesicles : Size(mm): <1 Percent:
NOT VERY ABUNDANT IN MOST PCES, ALL VESICLES LINED
WITH SECONDARY MINERALS;
Size(mm): TO 3 Percent: 5-10
IN PCES 3 (BOTTOM) AND 4 (TOP) AND 7+8 AND 12
(TOP) AND 14;
A SECONDARY ALTERATION DEPOSITING A BLUE-GREEN
MINERAL IN VESICLES IN PCES 4-5 AND 10-12;
Phenocrysts: PLAGIOCLASE
PLAG LATHS SEEN WITH BINOCULAR SCOPE;
OLIVINE
FRESH APPEARING OL SEEN WITH BINOCULAR SCOPE;
Replacement: PYRITE ( RARE%)
RARE PYRITE PRESENT;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 109.50
Core: 10 Top of Core Depth (m) : 100.50
Sect: 6 Top of Section Depth(m): 108.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-11), 2 (13-21), 3 (23-30), 4 (30-40),
5 (42-52), 6A (54-62), 6B (62-73), 6C (74-80),
7 (82-87), 8A (88-102), 8B (102-110), 9 (112-118),
10 (119-126), 11 (127-135), 12 (136-141),
13 (142-150);
Texture : APHYRIC, FINE-GRAINED, FEW MICROPHENOS OF OL;
Alteration : MOD
MIGHT BE 2 STAGES OF ALTERATION - FIRST STAGE
WHITE-GRAY MINERALS - SECOND STAGE BLUE-GREEN
MINERALS;
Vesicles : Size(mm): 0.2-0.5 Percent: 5
Location: Filling: PYRITE
Size(mm): TO 2 Percent:
Location: Filling: PYRITE
VESICLE RICH ZONES IN PCES 2-4+7+9;
VESICLES LINED WITH WHITE-GRAY MINERALS, ZONES IN
WHICH VESICLES LINED WITH BLUE-GREEN MINERALS,
SOME VESICLES CONTAIN PYRITE;
Phenocrysts: OLIVINE
Size(mm): <1
FEW MICROPHENOS OF OL;
Replacement: PYRITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 111.00
Core: 10 Top of Core Depth (m) : 100.50
Sect: 7 Top of Section Depth(m): 109.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-11), 2 (11-24), 3A (25-27), 3B (27-30),
4A (32-40), 4B (40-44), 4C (45-55), 5 (57-65),
6 (66-75), 7 (75-91), 8 (92-100), 9 (100-109),
10 (109-120), 11 (120-130), 12 (130-140),
13 (142-150);
Texture : APHYRIC, FINE-GRAINED, UP TO 10% ALTERED GLASS;
Alteration : MOD
AREAS OF A SECOND ALTERATION TO GREENISH
MATERIAL IN PCES 2+4C+7+9-11+13, SOME SCATTERED
PYRITE SURROUNDED BY OXIDATION HALO;
Comments : NO FLOW CONTACTS APPARENT, MIGHT BE PARTS OF
SEVERAL FLOWS - BECAUSE NO MASSIVE PCES RECOVERED;
Vesicles : Size(mm): 1 Percent: 5-7
VESICULARITY AVERAGES 5-7%, VESICLES LINED WITH
LIGHT COLORED SECONDARY MINERALS;
Phenocrysts: PLAGIOCLASE
PLAG APPARENT WITH BINOCULAR MICROSCOPE;
OLIVINE ( RARE%)
RARE FRESH OL APPARENT;
Replacement: PYRITE
SCATTERED PYRITE - SOME SURROUNDED BY OXIDATION
HALO;
Leg : 49 Top/Bottom Interval(mm): 0/1200 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 112.20
Core: 10 Top of Core Depth (m) : 100.50
Sect: 8 Top of Section Depth(m): 111.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-9), 2 (10-17), 3 (18-24), 4 (25-34),
5 (37-48), 6 (49-60), 7 (60-74), 8 (76-85),
9 (87-94), 10 (96-105), 11 (107-120);
Texture : APHYRIC, FINE-GRAINED, RARE MICROPHENOS OF OL AND
PLAG, UP TO 10% ALTERED GLASS;
Alteration : MOD
MIGHT BE TWO STAGES OF ALTERATION - FIRST STAGE
WHITE-GRAY MINERALS - SECOND STAGE BLUE-GREEN AND
YELLOW-GREEN MINERALS;
Vesicles : Size(mm): 0.1-0.3 Percent: 5-7
VESICULAR, RARELY UP TO 1MM, VESICLES LINED WITH
WHITE-GRAY MINERALS, ZONES IN WHICH VESICLES
FILLED WITH BLUE-GREEN AND YELLOW-GREEN MINERALS;
Phenocrysts: OLIVINE ( RARE%)
RARE MICROPHENOS;
PLAGIOCLASE ( RARE%)
RARE MICROPHENOS;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 111.50
Core: 11 Top of Core Depth (m) : 110.00
Sect: 1 Top of Section Depth(m): 110.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-12), 2 (12-20), 3 (20-30), 4 (30-40),
5 (40-50), 6 (50-65), 7 (65-75), 8 (75-88),
9 (89-96), 10 (96-102), 11 (102-115), 12 (115-121),
13 (122-131), 14 (131-140), 15 (141-150);
Texture : APHYRIC, FINE-GRAINED;
Structure : VEINS PRESENT;
Alteration : MOD;
Comments : NO FLOW BOUNDARIES APPARENT;
Vesicles : Size(mm): <=1 Percent: 5-10
Location: Filling: SMEC
VESICULAR, VERTICAL BANDS - SOMETIMES ADJACENT TO
VEINS - ARE FILLED VESICLES (SECOND SECONDARY
ALTERATION), VESICLES IN ENTIRE CORE LINED WITH
SMEC;
Phenocrysts: PLAGIOCLASE
OLIVINE ( RARE%)
PLAG AND RARE FRESH OL APPARENT WITH BINOCULAR
SCOPE;
Replacement: SMECTITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 113.00
Core: 11 Top of Core Depth (m) : 110.00
Sect: 2 Top of Section Depth(m): 111.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-13), 2 (14-21), 3 (22-32), 4 (33-43),
5 (45-55), 6 (57-65), 7 (66-73), 8A (75-85),
8B (84-95), 9A (97-107), 9B (109-113), 9C (115-119),
10 (120-135), 11 (135-150);
Texture : APHYRIC, FINE-GRAINED, RARE MICROPHENOS OF OL AND
PLAG;
Structure : CALCITE VEINS THROUGH ENTIRE CORE;
Alteration : MOD
ZONES OF HYDROTHERMAL ALTERATION IN PCES 1 AND 5;
Vesicles : Size(mm): Percent: 5-10
VESICULAR, VESICLES LINED WITH BLUE-GRAY AND
BLUE-GREEN MINERALS, SOME VESICLES FILLED WITH
DARK-GRAY MINERALS;
Phenocrysts: OLIVINE ( RARE%)
Size(mm): TO 1
REARE MICROPHENOS OF FRESH OL;
PLAGIOCLASE ( RARE%)
Replacement: CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 114.50
Core: 11 Top of Core Depth (m) : 110.00
Sect: 3 Top of Section Depth(m): 113.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-12), 1B (11-24), 2A (25-35), 2B (35-41),
2C (42-51), 2D (50-62), 2E (62-71), 2F (72-82),
3 (83-90), 4A (90-100), 4B (100-110), 4C (110-125),
4D (125-137), 4E (138-150);
Texture : APHYRIC, FINE-GRAINED;
Structure : CARB? VEIN IN PCE 1B, VERY UNIFORM ROCK;
Alteration : MOD;
Comments : NO FLOW CONTACTS APPARENT;
Vesicles : Size(mm): TO 1 Percent: 10
VESICULAR, VESICLES LINED WITH LIGHT-COLORED
SECONDARY MATERIAL;
Phenocrysts: OLIVINE
PLAGIOCLASE
FRESH OL AND PLAG APPARENT WITH BINOCULAR SCOPE;
Replacement: CARBONATE
ID UNCERTAIN;
Leg : 49 Top/Bottom Interval(mm): 0/1130 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 115.63
Core: 11 Top of Core Depth (m) : 110.00
Sect: 4 Top of Section Depth(m): 114.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2A (10-22), 2B (22-30), 3A (30-46),
3B (46-55), 4 (57-65), 5 (67-74), 6 (76-86),
7 (88-94), 8 (96-104), 9 (106-113);
Texture : APHYRIC, FINE-GRAINED, RARE MICROPHENOS OF FRESH
OL;
Alteration : MOD;
Vesicles : Size(mm): 0.1-0.3 Percent: 2-5
VESICULAR, SOME VESICLES PARTLY FILLED WITH
BLUE-GREEN MINERAL;
Phenocrysts: OLIVINE ( RARE%)
RARE MICROPHENOS OF FRESH OL;
Leg : 49 Top/Bottom Interval(mm): 0/ 200 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 119.70
Core: 12 Top of Core Depth (m) : 119.50
Sect: 1 Top of Section Depth(m): 119.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (12-20);
Texture : APHYRIC, FINE-GRAINED, VERY RARE MICROPHENOS OF
ALTERED OL AND PLAG, PCE 2 FINER GRAINED THAN
PCE 1;
Alteration : MOD;
Vesicles : Size(mm): 0.1-4 Percent: 5
Location: Filling: SMEC
VESICLES IN PCE 1 ARE 0.1MM, VESICLES IN PCE 2 ARE
4MM, FILLED WITH BLUE-GREEN AND DARK GRAY
MINERALS (SMEC);
Phenocrysts: PLAGIOCLASE ( RARE%)
OLIVINE ( RARE%)
VERY RARE MICROPHENOS OF ALTERED OL AND PLAG;
Replacement: SMECTITE
Leg : 49 Top/Bottom Interval(mm): 200/1500 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 121.00
Core: 12 Top of Core Depth (m) : 119.50
Sect: 1 Top of Section Depth(m): 119.70
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 3 (20-27), 4 (28-37), 5 (38-47), 6 (48-58),
7 (59-69), 8 (70-78), 9 (79-89), 10 (89-97),
11 (98-109), 12 (110-118), 13 (118-126),
14 (127-132), 15A (133-137), 15B (138-150);
Texture : APHYRIC, VERY FINE-GRAINED, GLASSY, MICROPHENOS OF
PLAG AND VERY RARE OL, ZONE OF GLASS WHICH CONTAINS
FRAGMENTS OF SEDIMENT IN PCE 1, GLASSY BORDER ZONE
IN PCE 1;
Structure : VEINS OF CALCITE IN PCE 7;
Alteration : MOD;
Vesicles : Size(mm): 0.5-1 Percent: 20
Location: Filling: CALCITE
VESICULAR, SOME VESICLES PARTLY FILLED WITH
CALCITE;
Phenocrysts: PLAGIOCLASE ( RARE%)
OLIVINE ( RARE%)
VERY RARE MICROPHENOS OF ALTERED OL AND PLAG;
Replacement: SMECTITE
Leg : 49 Top/Bottom Interval(mm): 0/1000 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 130.00
Core: 13 Top of Core Depth (m) : 129.00
Sect: 1 Top of Section Depth(m): 129.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-16), 3 (16-24), 4 (24-31),
5 (32-44), 6 (44-55), 7 (55-64), 8 (64-70),
10 (76-85), 11 (85-91), 12 (91-100);
Texture : APHYRIC, WITH BINOCULAR SCOPE SCATTERED CLOTS OF
PLAG-OL MICROPHENOS ARE EVIDENT, 1CM PATCH OF FRESH-
LOOKING GLASS ON OUTER CORE SURFACE OF PCE 6,
GNDMASS;
Structure : CARB? VEINS IN PCES 2+4+6, CALCITE VEINS;
Alteration : SLIGHTLY;
Vesicles : Size(mm): 1 Percent: 15
Location: Filling:
Shape : SPHERICAL
VESICULAR;
Phenocrysts: PLAGIOCLASE
OLIVINE
SCATTERED CLOTS OF PLAG-OL MICROPHENOS ARE
EVIDENT;
Replacement: CARBONATE
ID UNCERTAIN;
CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/1000 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 130.00
Core: 13 Top of Core Depth (m) : 129.00
Sect: 1 Top of Section Depth(m): 129.00
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 9 (70-75);
Texture : BASALT GLASSY;
Comments : BRECCIA OF GLASSY BASALT AND INDURATED
FOSSILIFEROUS SEDIMENT;
Leg : 49 Top/Bottom Interval(mm): 1000/1500 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 130.50
Core: 13 Top of Core Depth (m) : 129.00
Sect: 1 Top of Section Depth(m): 130.00
LITHOLOGY: TUFFACEOUS FOSSILIFEROUS SEDIMENTARY BRECCIA;
Piece No. : PCE 13 (100-115), 14 (115-120), 15 (120-125),
16 (125-135), 17 (135-144), 18 (144-150);
Texture : TUFFACEOUS;
Comments : FRAGMENTS OF GLASSY VESICULAR BASALT AND CLAM
SHELLS OBVIOUS, POSSIBLY 3 FLOWS SAMPLED IN ALL
OF CORE 13-1 OR A FLOW WITH A COMPLEX CONTACT,
COLOR 5Y6/4;
Leg : 49 Top/Bottom Interval(mm): 0/ 80 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 130.58
Core: 13 Top of Core Depth (m) : 129.00
Sect: 2 Top of Section Depth(m): 130.50
LITHOLOGY: SEDIMENT;
Piece No. : PCE 1 (0-8);
Comments : UNCERTAINTY ABOUT PCE 1 - ROCK OR ?
Leg : 49 Top/Bottom Interval(mm): 80/1500 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 132.00
Core: 13 Top of Core Depth (m) : 129.00
Sect: 2 Top of Section Depth(m): 130.58
LITHOLOGY: TUFFACEOUS FOSSILIFEROUS SEDIMENT BRECCIA;
Piece No. : PCE 4 (22-27), 5 (29-34), 6 (35-46), 7 (47-55),
8 (56-61), 9A (62-65), 9B (65-68), 11 (80-87),
12 (89-94), 13 (96-103), 14 (105-112),
15 (113-121), 16 (122-131), 17 (132-139),
18 (140-150);
Texture : APHYRIC, PALAGONITIZED GLASS IN PCES 13-16 AND 18,
GLASSY TO FINE-GRAINED;
Alteration : MOD
GLASS PARTLY ALTERED TO PALAG IN PCE 15;
Vesicles : Size(mm): 2 Percent: TO 25
Location: Filling: CALCITE
VERY VESICULAR, ALMOST ALL VESICLES LINED OR
FILLED WITH CALCITE, 2MM AVERAGE SIZE, MAXIMUM
1CM;
Replacement: CALCITE
PALAGONITE
GLASS PARTLY ALTERED TO PALAG IN PCE 15;
Leg : 49 Top/Bottom Interval(mm): 0/ 760 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 132.76
Core: 13 Top of Core Depth (m) : 129.00
Sect: 3 Top of Section Depth(m): 132.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-18), 3 (18-26), 4 (26-35),
5 (35-49), 6 (49-60), 7 (60-67), 8 (68-76);
Texture : APHYRIC, FINE-GRAINED TO GLASSY;
Structure : CARB VEINS;
Alteration : MOD;
Vesicles : Size(mm): 2 Percent: 20-25
VESICULAR, SIZE UP TO 1CM AND AVERAGING 2MM,
3CM LONG PIPE VESICLE IN PCE 5, ALL VESICLES
LINED WITH SECONDARY MATERIAL AND SEVERAL ARE
COMPLETELY FILLED ESPECIALLY IN PCE 4;
Replacement: CARBONATE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 140.00
Core: 14 Top of Core Depth (m) : 138.50
Sect: 1 Top of Section Depth(m): 138.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-17), 3 (18-25), 4 (25-34),
5 (35-45), 6 (46-59), 7 (59-66), 8 (66-75),
9 (75-84), 10 (85-94), 11 (95-100), 12 (100-106),
13 (107-116), 14 (116-124), 15 (124-130),
16 (130-136), 17 (136-144), 18 (145-150);
Texture : APHYRIC, FINE-GRAINED TO GLASSY, WITH BINOCULAR
SCOPE SCATTERED FRESH PLAG AND OL EVIDENT;
Structure : CARB VEIN IN PCE 17, RARE CALCITE VEINS;
Alteration : MOD;
Vesicles : Size(mm): TO 1- Percent: 520-3
Location: 0 Filling:
VESICULAR, NOTICEABLY LARGER IN PCES 5+10-11, ALL
VESICLES LINED WITH LIGHT SECONDARY MINERALS AND
A FEW COMPLETELY FILLED;
Phenocrysts: PLAGIOCLASE
OLIVINE
WITH BINOCULAR SCOPE SCATTERED FRESH PLAG AND OL
EVIDENT;
Replacement: CALCITE
CARBONATE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 149.50
Core: 15 Top of Core Depth (m) : 148.00
Sect: 1 Top of Section Depth(m): 148.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-8), 2 (9-17), 3 (18-29), 4 (31-38),
5 (40-46), 6 (47-54), 7 (55-63), 8 (64-69),
9 (70-75), 10 (76-81), 11 (82-87), 12 (88-94),
13 (95-102), 14 (103-112), 15 (113-118),
16 (119-132), 17 (134-139), 18 (141-150);
Texture : APHYRIC, FINE-GRAINED;
Structure : ENTIRE CORE VERY UNIFORM;
Alteration : SLIGHTLY;
Vesicles : Size(mm): 1-5 Percent: TO 20
Location: Filling: CALCITE,SMEC,
Location: Filling: CELAD
VERY VESICULAR, SOME VESICLES PARTLY FILLED WITH
CALCITE, VESICLES LINED WITH WHITE-BLUE AND GRAY-
BLUE MINERALS (SMEC? AND CELAD?);
Replacement: SMECTITE
ID UNCERTAIN;
CELADONITE
ID UNCERTAIN;
CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 151.00
Core: 15 Top of Core Depth (m) : 148.00
Sect: 2 Top of Section Depth(m): 149.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-16), 3 (16-25), 4 (25-31),
5 (32-45), 6 (45-53), 7 (53-59), 8A (60-71),
8B (73-79), 9 (80-90), 10 (90-99), 11 (99-104),
12 (104-111), 13 (111-119), 14 (119-126),
15 (127-136), 16 (137-150);
Texture : APHYRIC, FINE-GRAINED, SOME PLAG AND OL EVIDENT
WITH BINOCULAR SCOPE;
Structure : CARB VEINS IN PCES 5 AND 8A, VERY UNIFORM
HOMOGENEOUS SECTION;
Alteration : SLIGHTLY;
Vesicles : Size(mm): 2-2.5 Percent: 20-30
VESICULAR WITH A SIZE RANGE OF 0.25-4MM, AVERAGING
2-2.5MM, VESICLES LINED WITH LIGHT SECONDARY
MINERALS;
Phenocrysts: PLAGIOCLASE
OLIVINE
Size(mm): 1
SOME PLAG AND OL EVIDENT WITH BINOCULAR SCOPE,
OL MICROPHENOS 1MM THROUGHOUT ENTIRE CORE;
Replacement: CARBONATE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 152.50
Core: 15 Top of Core Depth (m) : 148.00
Sect: 3 Top of Section Depth(m): 151.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (11-19), 3 (20-29), 4A (30-36),
4B (36-40), 5 (42-53), 6A (55-63), 6B (62-71),
7 (72-84), 8 (86-94), 9 (95-108), 10 (109-121),
11 (122-130), 12 (132-138), 13A (141-143),
13B (142-150);
Texture : APHYRIC, A FEW MICROPHENOS OF FRESH AND ALTERED OL;
Alteration : SLIGHTLY;
Vesicles : Size(mm): 0.5-1 Percent: TO 10
Location: Filling: SMEC,CELAD?
Location: Filling: CALCITE
VERY VESICULAR, SIZE 0.5-1MM AND SOME 3-6MM,
VESICLES LINED WITH BLUE-GRAY MINERALS (SMEC AND
CELAD?), SOME VESICLES PARTLY FILLED WITH
CALCITE;
Phenocrysts: OLIVINE
A FEW MICROPHENOS OF FRESH AND ALTERED OL;
Replacement: CELADONITE
ID UNCERTAIN;
SMECTITE
CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 154.00
Core: 15 Top of Core Depth (m) : 148.00
Sect: 4 Top of Section Depth(m): 152.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (3-13), 1B (14-18), 2 (20-34), 3 (38-46),
4 (48-54), 5A (57-66), 5B (67-74), 6 (76-81),
7 (84-88), 8A (90-98), 8B (99-106), 8C (107-113),
9 (115-122), 10A (123-130), 10B (130-140),
11 (142-150);
Texture : APHYRIC, FINE-GRAINED, VERY RARE MICROPHENOS OF
OL;
Structure : CALCITE VEINS IN PCES 1A+1B+8C+10+11;
Alteration : SLIGHTLY;
Vesicles : Size(mm): 0.2-0.6 Percent:
Location: Filling: SMEC OR CELAD,
Location: Filling: CALCITE
VESICULAR (SIZE USUALLY 0.2-0.6MM), VESICLE-RICH
ZONES IN PCES 1A-2 AND 5B (SIZE 2-3MM), VESICLES
LINED WITH BLUE-GRAY MINERAL (SMEC OR CELAD),
SOME VESICLES FILLED WITH DARK GRAY MINERALS AND
SOME PARTLY FILLED WITH CALCITE;
Phenocrysts: OLIVINE ( RARE%)
MICROPHENOS;
Replacement: CELADONITE
ID UNCERTAIN;
SMECTITE
ID UNCERTAIN;
CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 155.50
Core: 15 Top of Core Depth (m) : 148.00
Sect: 5 Top of Section Depth(m): 154.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-9), 2 (10-20), 3 (21-30), 4 (32-40),
5 (42-50), 6 (51-56), 7 (58-62), 8 (64-72),
9 (74-80), 10 (82-88), 11 (89-96), 12 (98-107),
13 (108-114), 14 (115-121), 15 (122-128),
16 (130-138), 17 (140-150);
Texture : APHYRIC, FINE-GRAINED;
Structure : CALCITE VEINS IN PCES 1 AND 8;
Alteration : SLIGHTLY;
Vesicles : Size(mm): 0.2-0.5 Percent: 5
Location: Filling: CALCITE
VESICULAR, RARELY UP TO 2MM, SOME VESICLES FILLED
WITH DARK GRAY MINERAL OR PARTLY FILLED WITH
CALCITE, SOME VESICLES LINED WITH BLUE-GRAY
MINERALS;
Replacement: CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/1370 Analyst: Vennum, W.
Hole: 409 Sample Midpoint (m) : 156.87
Core: 15 Top of Core Depth (m) : 148.00
Sect: 6 Top of Section Depth(m): 155.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-20), 3 (20-28), 4 (28-38),
5 (38-45), 6 (45-54), 7 (54-60), 8 (60-70),
9 (70-78), 10 (78-85), 11 (85-93), 12 (93-102),
13 (102-112), 14 (112-118), 15 (118-128),
16 (128-137);
Texture : APHYRIC, FINE-GRAINED, MICROPHENOS OF OL IN PCES 1-
3;
Structure : RARE FRACTURES LINED WITH BLUE-GREEN SMEC AND CARB,
CORE VERY UNIFORM;
Alteration : SLIGHTLY;
Vesicles : Size(mm): 0.5-5 Percent: 5-10
Location: Filling: SMEC,CALCITE,
Location: Filling: ZEOLITE
VESICULAR, AVERAGE 2-2.5MM, VESICLES LINED WITH
SMEC AND CALCITE AND RARE ZEOL?;
Phenocrysts: OLIVINE
SCATTERED MICROPHENOS OF OL IN PCES 1-3;
Replacement: CALCITE
ZEOLITE ( RARE%)
ID UNCERTAIN;
CARBONATE
SMECTITE
Leg : 49 Top/Bottom Interval(mm): 0/1430 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 158.93
Core: 16 Top of Core Depth (m) : 157.50
Sect: 1 Top of Section Depth(m): 157.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-11), 2 (12-19), 3A (21-31), 3B (32-40),
4 (42-53), 5 (54-65), 6A (67-77), 6B (78-95),
7 (97-109), 8A (110-125), 8B (125-132),
8C (132-143);
Texture : APHYRIC, FINE-GRAINED;
Alteration : SLIGHTLY;
Vesicles : Size(mm): TO 3 Percent: TO 20
Location: Filling: CALCITE
VERY VESICULAR, UP TO 20% ESPECIALLY IN UPPER
PART OF SECTION, LARGE VESICLES (UP TO 3MM) IN
PCES 1-6B, SMALL VESICLES (0.2-0.5MM AND RARELY
1-2MM) IN PCES 6B-8C, SOME VESICLES PARTLY FILLED
WITH CALCITE, VESICLES LINED WITH BLUE-GRAY AND
GREEN GRAY MINERALS;
Replacement: CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/1300 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 160.30
Core: 16 Top of Core Depth (m) : 157.50
Sect: 2 Top of Section Depth(m): 159.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-7), 1B (7-18), 2 (20-29), 3 (29-36),
4 (36-45), 5 (45-51), 6 (51-60), 7 (60-70),
8 (70-82), 9 (82-90), 10 (90-100), 11 (100-110),
12 (110-121), 13 (122-130);
Texture : APHYRIC, FINE-GRAINED, SCATTERED MICROPHENOS OF
PLAG AND FRESH OL;
Structure : CORE VERY UNIFORM;
Alteration : FRESH;
Vesicles : Size(mm): 0.25-8 Percent: 5-12
Location: Filling: SMEC,CALCITE
VESICULAR, VESICLES UNEVENLY DISTRIBUTED, ALL
VESICLES EMPTY OR THINLY LINED WITH BLUE-GREEN
SMEC OR LESS OFTEN CALCITE;
Phenocrysts: PLAGIOCLASE
OLIVINE
SCATTERED MICROPHENOS OF PLAG AND FRESH OL;
Replacement: CALCITE
SMECTITE
Leg : 49 Top/Bottom Interval(mm): 0/1430 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 168.43
Core: 17 Top of Core Depth (m) : 167.00
Sect: 1 Top of Section Depth(m): 167.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-7), 2 (9-13), 3 (14-19), 4 (20-27),
5A (28-40), 5B (41-47), 5C (41-47), 6 (49-52),
7 (53-61), 8 (62-70), 9A (71-75), 9B (75-78),
10 (79-89), 11 (90-102), 12 (104-114),
13 (115-123), 14 (124-134), 15 (135-142);
Texture : APHYRIC, FINE-GRAINED, RARE MICROPHENOS OF OL;
Structure : RARE CARB VEINS THROUGHOUT CORE;
Alteration : MOD;
Vesicles : Size(mm): 1-3 Percent: TO 20
Location: Filling: CALCITE,SMEC,
Location: Filling: CELAD
VESICULAR, UP TO 20% IN PCES 5B-8+11, SOME
VESICLES FILLED WITH CALCITE OR PARTLY FILLED
WITH DARK GRAY MINERAL, SOME VESICLES LINED WITH
GRAY-BLUE AND GREEN-GRAY MINERALS (SMEC? AND
CELAD?);
Phenocrysts: OLIVINE ( RARE%)
RARE MICROPHENOS OF OL, PCES 8-10 MORE OL-RICH
THAN REST;
Replacement: CELADONITE
ID UNCERTAIN;
CALCITE
SMECTITE
ID UNCERTAIN;
CARBONATE
Leg : 49 Top/Bottom Interval(mm): 0/ 660 Analyst: Vennum, W.
Hole: 409 Sample Midpoint (m) : 169.16
Core: 17 Top of Core Depth (m) : 167.00
Sect: 2 Top of Section Depth(m): 168.50
LITHOLOGY: APHYRIC TO PLAG-OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 1 (0-12), 2 (12-28), 3 (28-34), 4 (34-42),
5 (42-50), 6 (50-66);
Texture : APHYRIC TO SPARSELY PHYRIC, FINE-GRAINED;
Alteration : MOD;
Vesicles : Size(mm): 0.2-10 Percent: 2-15
Location: Filling: SMEC
VESICLES UNEVENLY DISTRIBUTED, VESICLES EMPTY OR
THINLY LINED WITH BLUE-GREEN SMEC;
Phenocrysts: PLAGIOCLASE
OLIVINE
Size(mm): 2
SCATTERED MICROPHENOS OF PLAG AND ALTERED OL UP
TO 2MM, OL RICH LIKE SECOND HALF OF 17-1;
Replacement: SMECTITE
BLUE-GREEN;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 178.00
Core: 18 Top of Core Depth (m) : 176.50
Sect: 1 Top of Section Depth(m): 176.50
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCE 1 (0-11), 2 (12-20), 3 (21-29), 4 (30-35),
5 (36-40), 6 (41-50), 7 (51-58), 8 (58-65),
9 (66-70), 10 (71-80), 11 (80-90), 12 (90-100),
13 (101-110), 14 (110-120), 15 (120-130),
16 (130-140), 17 (140-150);
Texture : MOD PHYRIC, EVIDENCE OF CRYSTAL SETTLING IN PCES 8
AND 13?;
Structure : OL OFTEN CONCENTRATED IN LAYERS THROUGHOUT ENTIRE
CORE (LEAST VESICULAR ONES);
Alteration : MOD
OL MICROPHENOS WEATHERED BROWN;
Comments : PCES OF THIS SECTION EITHER BELONG TO ONE FLOW OR
MORE LIKELY ONE COMPOUND UNIT WITH DIVISION BETWEEN
PCES 8-9 AND 13-14;
Vesicles : Size(mm): Percent: 10-20
Location: Filling: SMEC, CALCITE
VESICULAR, THE MOST OL RICH LAYERS ARE LEAST
VESICULAR, MOST VESICLES LINED WITH DARK GREENISH
BLUE SMEC, MUCH CALCITE IN VESICLES;
Phenocrysts: OLIVINE (TO 10%)
Size(mm): 1-2
Replacement: CALCITE
MUCH CALCITE IN VESICLES;
SMECTITE
GREENISH BLUE IN COLOR;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 179.50
Core: 18 Top of Core Depth (m) : 176.50
Sect: 2 Top of Section Depth(m): 178.00
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCE 1 (0-11), 2 (11-19), 3 (20-30), 4 (31-40),
5 (41-50), 6 (51-60), 7 (61-69), 8 (70-79),
9 (80-87), 10 (88-87), 11A (96-104), 11B (104-112),
12 (112-121), 13 (121-130), 14 (131-140),
15 (141-150);
Texture : MOD PHYRIC, SLIGHTLY COARSER GRAINED THAN PREVIOUS
SECTION;
Structure : MORE MASSIVE THAN PREVIOUS SECTION;
Alteration : MOD
OL GENERALLY ALTERED TO BROWN ALTHOUGH SOME FRESH
OR ONLY PARTIALLY ALTERED OL CAN BE SEEN;
Vesicles : Size(mm): TO 1 Percent: <10
Location: Filling: SMEC
VESICLES LINED WITH DARK BLUE-GREEN SMEC;
Phenocrysts: OLIVINE ( 10%)
Replacement: CALCITE
LESS CALCITE THAN IN PREVIOUS SECTION;
SMECTITE
DARK BLUE-GREEN;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 181.00
Core: 18 Top of Core Depth (m) : 176.50
Sect: 3 Top of Section Depth(m): 179.50
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCE 1 (0-15), 2 (15-25), 3A (25-31), 3B (33-35),
4 (36-44), 5 (45-50), 6 (51-57), 7 (58-68),
8 (69-76), 9 (77-84), 10 (85-98), 11 (99-109),
12 (110-118), 13 (119-130), 14 (130-140),
15 (140-150);
Texture : MOD PHYRIC;
Structure : DEFINITE LAYERING;
Alteration : MOD;
Comments : SERIES OF COMPOUND FLOWS - THICKNESS OF EACH UNIT
VARYING;
Vesicles : Size(mm): Percent: <10
VESICULAR;
Phenocrysts: OLIVINE
PERCENTAGE VARIES;
Leg : 49 Top/Bottom Interval(mm): 0/1050 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 182.05
Core: 18 Top of Core Depth (m) : 176.50
Sect: 4 Top of Section Depth(m): 181.00
LITHOLOGY: OL MOD PHYRIC BASALT;
Piece No. : PCE 1 (0-11), 2 (12-24), 3 (25-33), 4 (34-44),
5 (45-53), 6 (54-61), 7 (62-68), 8 (70-78),
9 (79-86), 10 (87-94), 11 (95-105);
Texture : MOD PHYRIC, MEDIUM-GRAINED;
Structure : DIFFICULT TO SEE ANY LAYERING IN THIS SECTION;
Alteration : MOD
PCE 1 MORE ALTERED THAN THOSE BELOW;
Vesicles :
Location: Filling: SMEC,CALCITE
VESICULAR, SMEC AND CALCITE IN VESICLES;
Phenocrysts: OLIVINE
MICROPHENOS, MUCH OL IN PCE 1;
Replacement: CALCITE
IN VESICLES;
SMECTITE
IN VESICLES;
Leg : 49 Top/Bottom Interval(mm): 0/ 170 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 186.17
Core: 19 Top of Core Depth (m) : 186.00
Sect: CC Top of Section Depth(m): 186.10
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-7), 2 (8-17);
Texture : APHYRIC;
Alteration : MOD
OL-RICH LAYER SELECTIVELY ALTERED TO BROWN;
Vesicles : VESICULAR, GAS BUBBLE TRAILS VISIBLE IN PCE 2 -
VESICLES TRAILED OUT FOR ABOUT 10CM VERTICALLY -
BUBBLE TRAIL PASSES FROM OL-POOR TO OL-RICH PART
WHERE IT TERMINATES - SHOWING THAT BOTH WERE
LIQUID;
Groundmass : OLIVINE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 197.00
Core: 20 Top of Core Depth (m) : 195.50
Sect: 1 Top of Section Depth(m): 195.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-20), 3 (20-30), 4 (30-35),
5 (36-43), 6 (44-50), 7 (51-60), 8 (61-69),
9 (70-75), 10 (76-83), 11 (84-90), 12 (90-96),
13 (97-101), 14 (102-109), 15 (110-115),
16 (115-121), 17 (122-126), 18 (126-131),
19 (132-137), 20 (138-142), 21 (143-150);
Texture : APHYRIC, VERY FEW IF ANY OL MICROPHENOS, MEDIUM-
GRAINED, SEVERAL GLASS SELVAGES, SEVERAL GLASSY
MARGINS PRESENT, ALTERED GLASS IN PCES 7 AND 12,
FRESH GLASS IN PCES 1 AND 13;
Alteration : SLIGHTLY;
Comments : SEVERAL GLASSY MARGINS SUGGESTING COMPOUND FLOW
UNITS;
Vesicles : Size(mm): <1-4 Percent: >10
Location: Filling: SMEC, ZEOL
VESICULAR, LESS SMEC IN VESICLES THAN OVERLYING
BASALT AND NO CALCITE, VESICLES INFILLED WITH
ZEOL?;
Size(mm): TO 1 Percent: 1
IN PCES 18-21;
Phenocrysts: OLIVINE
FEW, IN ANY MICROPHENOS;
Replacement: SMECTITE
ZEOLITE
ID UNCERTAIN;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 206.50
Core: 21 Top of Core Depth (m) : 205.00
Sect: 1 Top of Section Depth(m): 205.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-14), 2 (15-21), 3 (22-30), 4 (30-38),
5 (38-46), 6 (47-53), 7 (54-59), 8 (60-65),
9 (66-73), 10 (74-81), 11 (82-90), 12 (91-100),
13 (102-110), 14 (111-120), 15 (120-130),
16 (130-140), 17 (140-150);
Texture : APHYRIC, APHYRIC IN PCE 17 WITH GLASS ON REAR
SURFACE, VERY FINE-GRAINED AT TOP OF SECTION - GETS
MORE COARSE-GRAINED TOWARDS BOTTOM, OL PHENOS IN
PCES 12-16;
Alteration : MOD
OL ALTERED TO BROWN IN PCES 12-16;
Comments : PCE 17 IS DIFFERENT ROCK - SURFACE? OF ANOTHER FLOW,
FLOW UNIT BOUNDARY BETWEEN PCES 16 AND 17;
Vesicles : Size(mm): Percent: <<1
NON-VESICULAR;
Size(mm): Percent: >10
PCE 17;
Phenocrysts: OLIVINE ( TO 6%)
ALTERED, IN PCES 12-16;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 208.00
Core: 21 Top of Core Depth (m) : 205.00
Sect: 2 Top of Section Depth(m): 206.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-11), 2 (12-20), 3 (20-30), 4 (30-36),
5 (37-45), 6 (46-56), 7 (57-66), 8 (67-75),
9 (76-85), 10 (85-98), 11 (99-108), 12 (108-120),
13 (120-130), 14 (130-135), 15 (135-143),
16 (144-150);
Texture : APHYRIC, PCES 7+8 SLIGHTLY COARSER GRAINED, PCES
14-16 SLIGHTLY COARSER-GRAINED THAN THOSE ABOVE,
LOCAL ALTERED GLASS SELVAGES;
Alteration : MOD
PCE 8 OXIDIZED AT BASE, TOP OF PCE 9 OXIDIZED AND
SMALL PCE OF ALTERED GLASS PRESENT, BASALT
OXIDIZED IN PLACES;
Comments : FLOW BOUNDARY BETWEEN PCES 8 AND 9;
Vesicles : Size(mm): Percent: >10
Location: Filling: CALCITE,SMEC
IN PCE 9;
VESICULAR, DEGREE OF VESICULATION VARIES, PCES 7+8
LESS VESICULAR, PCE 9 HAS LARGE VESICLES, PCE 10
ALSO VERY VESICULAR WITH LARGE VESICLES FORMING
VERTICAL TRAILS, SMEC AND CALCITE IN VESICLES;
Replacement: CALCITE
SMECTITE
Leg : 49 Top/Bottom Interval(mm): 0/ 330 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 208.33
Core: 21 Top of Core Depth (m) : 205.00
Sect: 3 Top of Section Depth(m): 208.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-20), 3 (20-25), 4 (26-33);
Texture : APHYRIC, ALTERED GLASS IN PCE 2;
Structure : HORIZONTAL STRUCTURE IN PCE 2;
Alteration : MOD
PCE 4 OXIDIZED ON TOP SURFACE;
Vesicles : Size(mm): Percent: >10
IN PCE 1;
Size(mm): TO 4 Percent:
IN PCE 4;
PCES 2 AND 3 NON-VESICULAR;
Leg : 49 Top/Bottom Interval(mm): 350/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 209.50
Core: 21 Top of Core Depth (m) : 205.00
Sect: 3 Top of Section Depth(m): 208.35
LITHOLOGY: OL SPARSELY PHYRIC BASALT;
Piece No. : PCE 5 (35-41), 6 (42-58), 7 (49-55), 8 (56-62),
9 (64-70), 10 (70-77), 11 (77-84), 12 (85-90),
13 (91-100), 14 (100-105), 15 (106-110),
16 (111-120), 17 (120-127), 18 (128-137),
19 (137-150);
Texture : SPARSELY PHYRIC, PCE 8 BECOMES FINER GRAINED AT
BASE, COARSER GRAINED IN PCES 14-18, ALTERED GLASS
5MM THICK IN PCE 9;
Alteration : MOD
OL ALTERED TO BROWN IN PCE 19;
Vesicles : Size(mm): <1 Percent: <1
IN PCES 5-11, PCE 8 SLIGHTLY MORE THAN 1% AT TOP -
BECOMING NON-VESICULAR AT BASE;
Size(mm): Percent: 5
IN PCE 12;
Size(mm): <1 Percent: 10
IN PCES 13-19, LARGE VESICLES IN PCE 13, SMALL
VESICLES IN PCES 14-18, VESICLES <1MM IN PCE 19;
VESICLES FORM HORIZONTAL STRUCTURES IN ROCK IN
PCES 9-18;
Phenocrysts: OLIVINE
Leg : 49 Top/Bottom Interval(mm): 0/1400 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 215.90
Core: 22 Top of Core Depth (m) : 214.50
Sect: 1 Top of Section Depth(m): 214.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-9), 2 (10-20), 3 (21-30), 4 (31-40),
5 (41-45), 6 (46-59), 7 (60-69), 8 (69-79),
9 (80-85), 10 (86-99), 11 (100-110), 12 (111-120),
13 (121-130), 14 (131-140);
Texture : APHYRIC, MEDIUM-GRAINED;
Vesicles : Size(mm): >1 Percent: 5
IN PCES 1-2;
Size(mm): <1 Percent: 5
IN PCES 3-9 AND 11-14;
Size(mm): 2 Percent: 10
IN PCE 10;
VESICLE STRUCTURES ARRANGED HORIZONTALLY IN PCE 4,
2 GAS BUBBLE TRAILS BEARING LARGE VESICLES ALIGNED
VERTICALLY IN PCE 6;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 225.50
Core: 23 Top of Core Depth (m) : 224.00
Sect: 1 Top of Section Depth(m): 224.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-11), 2 (12-20), 3 (20-27), 4 (28-40),
5 (41-48), 6 (49-55), 7 (57-65), 8 (66-72),
9 (73-83), 10 (84-92), 11 (93-103), 12 (103-116),
13 (106-123), 14 (123-130), 15 (130-140),
16 (140-150);
Texture : APHYRIC;
Alteration : MOD
VARIOUS PATCHES OF OXIDATION IN PCES 5-16;
Vesicles : Size(mm): Percent: <1
Location: Filling: SMEC,CALCITE
IN PCES 2-4; SMEC,CALCITE
Size(mm): Percent: TO 10
IN PCES 5-16, MOST VESICLES HAVE SMEC LINING
AND ALSO ABUNDANT CALCITE;
Replacement: CALCITE
SMECTITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 227.00
Core: 23 Top of Core Depth (m) : 224.00
Sect: 2 Top of Section Depth(m): 225.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (11-19), 3 (20-26), 4 (27-31),
5 (32-46), 6 (47-53), 7 (54-65), 8 (66-74),
9 (75-85), 10 (85-92), 11 (92-99), 12 (100-110),
13 (110-116), 14 (117-125), 15 (125-135),
16 (135-140), 17 (141-150);
Texture : APHYRIC;
Alteration : MOD
OL WEATHERED BROWN;
Comments : NO VISIBLE FLOW BOUNDARIES;
Vesicles : Size(mm): Percent: 10
Location: Filling: SMEC,CALCITE
Location: Filling: ZEOLITE
MUCH SMEC AND CALCITE IN VESICLES, FIBROUS
ZEOLITE IN 1 VESICLE;
Replacement: CALCITE
SMECTITE
MUCH CALCITE AND SMEC IN VESICLES;
ZEOLITE
FIBROUS, IN ONE VESICLE;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 235.00
Core: 24 Top of Core Depth (m) : 233.50
Sect: 1 Top of Section Depth(m): 233.50
LITHOLOGY: APHYRIC BASALT;
VESICULAR;
Piece No. : PCES 1 (0-10), 2 (10-20), 3 (20-30), 4 (30-44),
5 (45-50), 6 (50-69), 7 (60-70), 8 (70-80),
9 (80-91), 10 (92-101), 11 (103-110), 12 (112-120),
13 (124-128), 14 (133-139), 15 (140-150);
Texture : APHYRIC;
Alteration : RELATIVELY WEATHERED;
Vesicles : Size(mm): Percent: CA 10
Location: Filling: PYRITE
CA 10% VESICLES THAT ARE EMPTY EXCEPT FOR ONE OR
TWO CRYSTALS OF PYRITE IN PCES 1-3;
Size(mm): 1 Percent: <5
Location: Filling: SMECTITE
PCES 4-14 ARE LESS VESICULAR AND CONTAIN A
RELATIVELY LARGE QUANTITY OF SECONDARY MINERALS
FILLING VESICLES- MAINLY SMECTITE;
Size(mm): TO 5 Percent: >10
PCE 15 IS MORE VESICULAR;
Replacement: PYRITE
SMECTITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 236.50
Core: 24 Top of Core Depth (m) : 233.50
Sect: 2 Top of Section Depth(m): 235.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-20), 3 (20-30), 4A (30-40),
4B (40-50), 5 (50-69), 10 (115-120), 11 (120-130),
12 (130-140), 13 (140-150);
Texture : APHYRIC;
Structure : VESICLES ARRANGED IN HORIZONTAL STRUCTURES IN PCES
1-5;
Alteration : EXT
OL ALTERED BROWN, GREEN AND BROWN ALTERATION IN
PCES 10-11, BLUE-GRAY ALTERATION IN PCES 11-13,
SECONDARY ALTERATION PATTERN SEEMS TO BE RELATED
TO CONCENTRATION OF OL;
Comments : CONTACT BETWEEN GREEN-BROWN ALTERATION AND GRAY-BLUE
IN PCE 5;
Vesicles : Size(mm): TO 4 Percent: 10
Location: Filling: EPIDOTE,FE.OX
LARGE NUMBER OF VESICLES FILLED WITH BRIGHT GREEN
XTLLINE SECONDARY MATERIAL (EPID?) AND BROWN
IRON OXIDE;
Replacement: EPIDOTE
ID UNCERTAIN;
FERROUS MN OXIDE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 236.50
Core: 24 Top of Core Depth (m) : 233.50
Sect: 2 Top of Section Depth(m): 235.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 6 (70-80), 7 (80-95), 8 (96-106), 9 (107-114);
Texture : APHYRIC, LESS OL THAN ABOVE;
Alteration : MOD;
Vesicles : Size(mm): Percent: 5
VESICLES FILLED WITH LIGHT BLUE-GRAY SECONDARY
Groundmass : OLIVINE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 238.00
Core: 24 Top of Core Depth (m) : 233.50
Sect: 3 Top of Section Depth(m): 236.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-11), 2A (12-21), 2B (22-34), 3 (35-41),
4 (43-54), 5 (54-62), 6 (63-71);
Texture : APHYRIC;
Alteration : SLIGHTLY
GREEN ALTERATION DUE TO OL BEING ALTERED;
Vesicles : Size(mm): TO 5 Percent: 10
IN PCES 1-4;
Groundmass : OLIVINE
Replacement: EPIDOTE
ID UNCERTAIN, ELONGATED CRYSTAL OF GREEN
CRYSTALLINE EPID?;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 239.50
Core: 24 Top of Core Depth (m) : 233.50
Sect: 4 Top of Section Depth(m): 238.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1A (0-10), 1B (10-20), 2 (20-31), 3 (34-46),
4 (49-65), 5 (67-73), 6 (74-83), 7 (85-100),
8 (102-108), 9 (109-119), 10 (120-127),
11A (128-133), 11B (134-141), 11C (134-141),
12 (142-150);
Texture : APHYRIC;
Alteration : SLIGHTLY
SOME ALTERATION TO BLUE-GRAY ZEOLITE OTHERWISE
RELATIVELY UNALTERED;
Comments : CONTACT BETWEEN 2 DIFFERENT ALTERATION TYPES IN
PCE 11A;
Vesicles : Size(mm): Percent: TO 2
VESICULAR;
Replacement: ZEOLITE
BLUE-GRAY;
SMECTITE
PYRITE
EPIDOTE
GREEN SECONDARY MINERAL - EPID? IN PCES 11A-12;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 241.00
Core: 24 Top of Core Depth (m) : 233.50
Sect: 5 Top of Section Depth(m): 239.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-12), 2 (14-20), 3A (21-30), 3B (30-40),
4 (40-50), 5A (50-60), 5B (60-72), 5C (73-81),
5D (81-91), 6 (92-101), 7A (102-112), 7B (114-119),
8 (120-130), 9 (130-140), 10 (141-150);
Texture : APHYRIC;
Structure : IRON OXIDE VEINS PRESENT;
Alteration : MOD
PATCHES OF GREEN ALTERATION (EPID) ASSOCIATED
WITH VEINS OF IRON OXIDE, GREEN (EPID) AND BROWN
ALTERATION IN PCES 1-2;
Vesicles : Size(mm): Percent: <1
Location: Filling: ZEOLITE
FRESHER PART OF ROCK HAS VESICLES LINED OR FILLED
WITH GRAY-BLUE ZEOLITE;
Size(mm): <1 Percent: 10
IN PCE 4;
Replacement: EPIDOTE
ID UNCERTAIN;
ZEOLITE
GRAY-BLUE IN COLOR;
FERROUS MN OXIDE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 242.50
Core: 24 Top of Core Depth (m) : 233.50
Sect: 6 Top of Section Depth(m): 241.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-17), 2 (19-34), 3A (35-52), 3B (52-56),
4A (59-73), 4B (74-85), 4C (85-91), 5A (92-102),
5B (103-111), 6 (113-120), 7A (122-126),
7B (126-134), 8 (135-150);
Texture : APHYRIC;
Structure : IRON ORE VEINS;
Alteration : MOD
GREEN ALTERATION ZONES OXIDIZED AND ASSOCIATED
WITH IRON ORE VEINS;
Comments : THESE ALTERATION PRODUCTS SUGGEST THAT THE ROCKS ARE
JUST BELOW THE ZEOL/GREENSCHIST FACIES ALTERATION
ZONE AT 250 DEGREES CENTIGRADE;
Vesicles : Size(mm): Percent: 1
Location: Filling: ZEOL,EPID
PATCHES OF GREEN ALTERATION AND EPID IN VESICLES,
ABUNDANT BLUE-GRAY ZEOL INFILLING;
Replacement: EPIDOTE
ZEOLITE
BLUE-GRAY, ABUNDANT;
Leg : 49 Top/Bottom Interval(mm): 0/ 630 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 243.13
Core: 24 Top of Core Depth (m) : 233.50
Sect: 7 Top of Section Depth(m): 242.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-15), 2 (16-21), 3 (22-32), 4 (33-46),
5 (47-63);
Texture : APHYRIC;
Alteration : MOD
PATCHES OF GREEN ALTERATION;
Vesicles : Size(mm): Percent: <5
Location: Filling: ZEOLITE,EPIDOTE
MUCH ZEOLITE IN VESICLES, 1 VESICLE 3MM ACROSS
FILLED WITH OLIVE-GREEN EPIDOTE;
Replacement: EPIDOTE
ZEOLITE
MUCH ZEOLITE IN VESICLES;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 244.50
Core: 25 Top of Core Depth (m) : 243.00
Sect: 1 Top of Section Depth(m): 243.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-12), 2 (12-20), 3 (22-30), 4 (31-40),
5A (41-50), 5B (50-57), 5C (57-70), 6 (72-88),
7A (89-98), 7B (98-105), 8 (105-114), 9 (114-127),
10 (127-140), 11 (140-150);
Texture : APHYRIC;
Alteration : MOD
MUCH OF SECTION ALTERED TO GREEN, HYDROTHERMAL
ALTERATION TURNED ROCK GREEN AND BROWN THRU-OUT
CORE;
Vesicles : Size(mm): Percent: 1
Location: Filling: EPIDOTE,ZEOLITE
VESICLES WITH OLIVE GREEN AND YELLOW AND DEEP
GREEN EPIDOTE, SOME VESICLES FILLED WITH ZEOLITE,
LARGE VESICLES OF EPIDOTE IN PCE 10;
Replacement: EPIDOTE
OLIVE-GREEN AND YELLOW AND DEEP GREEN;
ZEOLITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 246.00
Core: 25 Top of Core Depth (m) : 243.00
Sect: 2 Top of Section Depth(m): 244.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-8), 2 (9-16), 3 (17-27), 4A (29-37),
4B (39-47), 5 (50-55), 6 (57-69), 7 (70-80),
8 (80-90), 9 (90-96), 10 (97-103), 11 (103-112),
12 (112-120), 13 (120-130), 14 (131-139),
15 (139-145), 16 (145-150);
Texture : APHYRIC;
Alteration : MOD
GREEN ALTERATION IN PCES 1-6 WITH EPIDOTE AND
OXIDATION TO BROWN IN CERTAIN PLACES, OP.MINS
OXIDIZED TO BROWN IN PCES 7-16;
Comments : FLOW BOUNDARY BETWEEN PCES 6+7;
Vesicles : Size(mm): Percent: <1
IN PCES 1-6;
Size(mm): Percent: 20
20% VESICULAR ZONE IN PCES 4B-5 WITH VESICLES
FORMING ALMOST HORIZONTAL STRUCTURES;
Size(mm): TO 7 Percent:
Location: Filling: CALCITE,EPIDOTE
PCES 7-16 HIGHLY VESICULAR, LINED WITH CALCITE
AND EPIDOTE;
Replacement: EPIDOTE
CALCITE
OPAQUE MINERALS
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 247.50
Core: 25 Top of Core Depth (m) : 243.00
Sect: 3 Top of Section Depth(m): 246.00
LITHOLOGY: APHYRIC BASALT;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 247.50
Core: 25 Top of Core Depth (m) : 243.00
Sect: 3 Top of Section Depth(m): 246.00
LITHOLOGY: ALTERED TO GREENSTONE;
Piece No. : PCE 1 (0-11), 2 (12-22), 3 (23-30), 4A (32-37),
4B (32-37), 5 (38-46), 6 (47-55), 7 (57-65),
8 (68-74), 9 (76-92), 10 (94-100), 11 (102-109),
12 (110-117), 13 (118-127), 14 (128-136),
15 (138-150);
Texture : APHYRIC, GLASS SELVAGES IN PCES 3 AND 14, REMNANTS
OF GLASSY SURFACE IN PCES 4A+4B, MUCH FRESH LOOKING
GLASS IN PCE 14;
Structure : PCE 12 CUT BY BROWN IRON OXIDE VEINS;
Alteration : MOD
Comments : FLOW BOUNDARIES BETWEEN PCES 3 AND 4A AND BETWEEN
PCES 13+14, PCES 3-10 PARTICULARLY GREEN, ALTERED
TO GREENSTONE;
Vesicles : Size(mm): Percent: 10
IN PCES 6-7;
Size(mm): >1 Percent: <2
Location: Filling: ZEOL
IN PCES 8-10;
VESICLES ARANGED HORIZONTALLY IN PCE 14;
Replacement: ZEOLITE
EPIDOTE
FERROUS MN OXIDE
Leg : 49 Top/Bottom Interval(mm): 0/1460 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 248.96
Core: 25 Top of Core Depth (m) : 243.00
Sect: 4 Top of Section Depth(m): 247.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-12), 2 (12-20), 3 (21-28), 4 (28-35),
5 (36-47), 6 (47-56), 7 (57-67), 8 (68-79),
9 (80-89), 10 (90-95), 11 (96-107), 12 (108-120),
13 (120-127), 14 (128-135), 15 (136-146);
Texture : APHYRIC;
Alteration : SLIGHTLY
ALTHOUGH HYDROTHERMALLY ALTERED THIS SECTION SEEMS
LESS AFFECTED THAN PREVIOUS SECTIONS AND NO GREEN
ALTERATION PRESENT;
Comments : HYDROTHERMALLY ALTERED;
Vesicles : Size(mm): Percent: 5-10
IN PCES 1-6;
Size(mm): Percent: <5
Location: Filling: CALCITE
IN PCES 7-15, CALCITE-FILLED AMYGDULES PRESENT;
Replacement: CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Wood, D.
Hole: 409 Sample Midpoint (m) : 254.00
Core: 26 Top of Core Depth (m) : 252.50
Sect: 1 Top of Section Depth(m): 252.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-21), 3 (22-36), 4 (37-46),
5 (46-55), 6A (55-65), 6B (55-65), 7 (65-73),
8 (73-83), 9 (83-93), 10 (93-100), 11 (100-105),
12A (107-109), 12B (110-112), 12C (113-115),
13 (116-126), 14 (126-130), 15 (131-138),
16 (138-150);
Texture : APHYRIC, FINE-GRAINED;
Structure : RARE CALCITE VEINS;
Alteration : MOD;
Vesicles : Size(mm): 0.5-2 Percent: 15-20
Location: Filling: CALCITE
VERY VESICULAR, RARELY UP TO 5MM, LINED WITH BLUE-
GRAY AND DARK GRAY AND YELLOW-GREEN SECONDARY
MINERALS, SOME VESICLES PARTLY CALCITE-FILLED;
Replacement: CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/ 400 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 254.40
Core: 26 Top of Core Depth (m) : 252.50
Sect: 2 Top of Section Depth(m): 254.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-22), 3 (22-30), 4 (31-40);
Texture : APHYRIC, FINE-GRAINED;
Structure : CARB VEIN IN PCE 2, RARE CALCITE VEINS;
Alteration : MOD;
Vesicles : Size(mm): 1-2 Percent: 15-20
Location: Filling: CALCITE
MOST VESICLES LINED WITH GREEN TO BLUE-GREEN
MATERIAL AND CALCITE;
Replacement: CALCITE
CARBONATE
Leg : 49 Top/Bottom Interval(mm): 0/ 750 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 262.75
Core: 27 Top of Core Depth (m) : 262.00
Sect: 1 Top of Section Depth(m): 262.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (11-16), 3 (17-27), 4 (28-38),
5 (40-48), 6 (49-57), 7 (59-64), 8 (66-75);
Texture : APHYRIC, FINE-GRAINED;
Alteration : MOD;
Vesicles : Size(mm): 0.5-3 Percent: TO 20
IN PCES 1-3, LINED WITH DARK GRAY MINERAL;
Size(mm): 0.1-0.5 Percent: 1-3
Location: Filling: CALCITE
IN PCES 4-8, RARELY UP TO 1-1.5MM IN SIZE,
VESICLES LINED WITH DARK GRAY AND BLUE-GRAY
MINERALS AND SOME PARTLY FILLED WITH CALCITE;
Replacement: CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 273.00
Core: 28 Top of Core Depth (m) : 271.50
Sect: 1 Top of Section Depth(m): 271.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-20), 4 (27-35), 5 (35-45),
7 (50-59), 8 (59-65), 9 (66-77), 10A (79-84),
10B (86-88), 11 (89-96), 12 (96-102), 13 (103-110),
14 (111-120), 15 (120-126), 16 (127-134),
17 (134-140), 18 (140-150);
Texture : APHYRIC, FINE-GRAINED;
Vesicles : Size(mm): 1-2 Percent: 25-30
Location: Filling:
Shape : PIPE
SOME VESICLES UP TO 4-5MM, PIPE VESICLES IN PCES
5+7+10B+12+14;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 273.00
Core: 28 Top of Core Depth (m) : 271.50
Sect: 1 Top of Section Depth(m): 271.50
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE 3 (20-26), 6 (45-50);
Texture : BRECCIA IS FINE-GRAINED, PALAGONITIC GLASS;
Alteration : MOD;
Vesicles : VESICULAR;
Leg : 49 Top/Bottom Interval(mm): 0/ 880 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 281.88
Core: 29 Top of Core Depth (m) : 281.00
Sect: 1 Top of Section Depth(m): 281.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-9), 2 (10-17), 3 (18-24), 4 (26-34),
5 (36-42), 6 (43-50), 7 (51-59), 8 (60-65),
9 (67-72), 10 (73-78), 11 (79-88);
Texture : APHYRIC, FINE-GRAINED, RARE MICROPHENOS OF OL;
Alteration : MOD;
Vesicles : Size(mm): 0.5-1.5 Percent: 10-20
Location: Filling: SMEC,CELAD,
Location: Filling: CALCITE
ALL PCES EXCEPT 7+10+11, PIPE VESICLES IN PCE 10,
VESICLES LINED WITH DARK GRAY AND BLUE-GRAY
MINERALS (SMEC AND CELAD) AND SOME VESICLES PARTLY
FILLED WITH CALCITE;
Phenocrysts: OLIVINE ( RARE%)
MICROPHENOS;
Replacement: SMECTITE
BLUE-GRAY;
CELADONITE
BLUE-GRAY;
CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/ 400 Analyst: Zolotarev, B.
Hole: 409 Sample Midpoint (m) : 290.90
Core: 30 Top of Core Depth (m) : 290.50
Sect: 1 Top of Section Depth(m): 290.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (11-19), 3 (21-29), 4 (31-40);
Texture : APHYRIC, FINE-GRAINED, RARE MICROPHENOS OF OL;
Alteration : MOD;
Vesicles : Size(mm): Percent: TO 20
Location: Filling: CALCITE, CELAD
IN PCES 1+2;
Size(mm): 0.3-1 Percent: 5-10
Location: Filling: CALCITE, CELAD
IN PCES 3+4, RARELY UP TO 4MM, 1 PIPE VESICLE,
SOME VESICLES PARTLY FILLED WITH CALCITE, SOME
VESICLES LINED WITH BLUE-GRAY MINERAL (CELAD?);
Phenocrysts: OLIVINE ( RARE%)
MICROPHENOS;
Replacement: CALCITE
CELADONITE
ID UNCERTAIN, BLUE GRAY MINERAL;
Leg : 49 Top/Bottom Interval(mm): 0/1500 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 301.50
Core: 31 Top of Core Depth (m) : 300.00
Sect: 1 Top of Section Depth(m): 300.00
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-7), 2 (7-18), 3 (19-28), 4 (28-35),
5 (35-45), 6 (45-55), 7 (55-60), 8 (62-69),
9 (70-79), 10A (80-82), 10B (83-85), 11 (86-94),
12 (95-100), 13 (100-110), 14A (112-120),
14B (120-128), 15 (130-140), 16 (140-150);
Texture : APHYRIC, FINE-GRAINED;
Alteration : MOD;
Vesicles : Size(mm): 1-2 Percent: 30-50
Location: Filling: CALCITE,SMEC
Shape : PIPE
PIPE VESICLES PRESENT ESPECIALLY IN PCES 3+5+12+
14A+14B+16, 1 PIPE VESICLE IN PCES 14A-14B IS
3-4MM DIAMETER AND 15CM LONG, VESICLES LINED
WITH GREENISH MATERIAL (SMEC) AND SOME CALCITE;
Replacement: CALCITE
SMECTITE
GREENISH;
Leg : 49 Top/Bottom Interval(mm): 0/ 860 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 302.36
Core: 31 Top of Core Depth (m) : 300.00
Sect: 2 Top of Section Depth(m): 301.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-11), 2 (12-20), 3 (20-30), 4 (30-39),
5 (40-50), 6 (50-60), 7 (61-74), 8 (75-86);
Texture : APHYRIC, FINE-GRAINED;
Alteration : MOD;
Vesicles : VESICULAR;
Leg : 49 Top/Bottom Interval(mm): 0/1400 Analyst: Duff, W.
Hole: 409 Sample Midpoint (m) : 310.90
Core: 32 Top of Core Depth (m) : 309.50
Sect: 1 Top of Section Depth(m): 309.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCE 1 (0-10), 2 (10-20), 3 (20-25), 4 (25-33),
5 (34-42), 6A (43-46), 6B (47-49), 7 (51-59),
8 (59-68), 9 (69-74), 10 (75-80), 11 (80-90),
12 (90-102), 13 (102-111), 14 (111-119),
15 (119-125), 16 (125-140);
Texture : APHYRIC, FINE-GRAINED, GLASSY RINDS ON PCES 14+16;
Vesicles : Size(mm): 1-2 Percent: 30
PIPE VESICLES IN PCES 7-13;
|
