Leg : 73 Top/Bottom Interval(mm): 0/1070 Analyst: Carman, M.
Hole: 522B Sample Midpoint (m) : 151.47
Core: 3 Top of Core Depth (m) : 148.90
Sect: 2 Top of Section Depth(m): 150.40
LITHOLOGY: SEDIMENT;
Leg : 73 Top/Bottom Interval(mm): 1070/1080 Analyst: Carman, M.
Hole: 522B Sample Midpoint (m) : 151.48
Core: 3 Top of Core Depth (m) : 148.90
Sect: 2 Top of Section Depth(m): 151.47
LITHOLOGY: SEDIMENT;
LIMESTONE;
Leg : 73 Top/Bottom Interval(mm): 1080/1500 Analyst: Carman, M.
Hole: 522B Sample Midpoint (m) : 151.90
Core: 3 Top of Core Depth (m) : 148.90
Sect: 2 Top of Section Depth(m): 151.48
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 2A (110-118), 2B (118-125), 3 (128-134),
4 (137-141), 5 (143-148);
Texture : APHYRIC,VERY FINE-GRAINED TO MEDIUM-COARSE-GRAINED,
PCE 2A HAS 1.5CM BLACK GLASSY RIND AT TOP,TWO SMALL
PARTS OF PCE 3 ALSO HAVE THIN GLASS MARGINS,TEXTURE
COARSENS DOWNWARD;
Structure : PILLOW BASALT(?),PCE 2A GLASS CUT BY WAXY LUSTERED
ORANGE PALAG ZONES,SEVERAL THIN(0.25-1MM) CALCITE-
FILLED VEINS;
Alteration : MOD TO EXT
PCES 2B+4-5;
EXT
PCES 2A+3;
Comments : DARK GRAY BASALT,PCES 2A+3 BROWNISH-GRAY,PCE 2A
BEGINS FLOW UNIT 1,OBSERVATIONS TAKEN OF ARCHIVE
HALF;
Vesicles : Size(mm): TO 1 Percent:
Location: Filling: CALCITE,SMEC
Shape : ROUNDED
Location: Filling: FE.OX
VESICLES FILLED WITH CALCITE & DARK GREEN SMEC &
FE.OX(RUSTY);
Replacement: CALCITE
PALAGONITE
WAXY LUSTERED & ORANGE;
SMECTITE
DARK GREEN;
FERROUS MN OXIDE
RUSTY;
Leg : 73 Top/Bottom Interval(mm): 0/1500 Analyst: Carman, M.
Hole: 522B Sample Midpoint (m) : 153.40
Core: 3 Top of Core Depth (m) : 148.90
Sect: 3 Top of Section Depth(m): 151.90
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (2-6), 1B (6-24), 1C (24-31), 1D (32-41),
2A (42-52), 2B (53-64), 2C (65-71), 2D (72-79),
3A (82-91), 3B (90-100), 3C (100-114), 4A (116-126),
4B (126-139), 4C (139-149);
Texture : APHYRIC,PCES 1A-1D FINE-TO-MEDIUM-GRAINED,GLASS RIND
(0.5CM THICK) ON LOWER CORNER OF PCE 1D WITH TEXTURE
BECOMING FINER TOWARD IT,PCES 2A-2D SIMILAR TO PCES
1A-1B,GLASSY RINDS(0.75-2CM THICK) AT STEEP ANGLES
TO CORE AXIS ON PCES 2A-2B+2D-4C,PCES 3A-4C FINER-
GRAINED THAN UNIT 2;
Structure : PILLOW BASALT(?),PCES 1A-1D HAVE NUMEROUS THIN
(0.5-2MM) MOSTLY IRREGULAR VEINS COATED WITH DARK
GREEN SMEC & SEVERAL ARE CALCITE-FILLED,PCES 2A-2D
CLEAR CALCITE VEINS CUT GLASS & PASS INTO XTLLINE
ROCK WITH MICROBRECCIATION(VEINS MOSTLY SIMILAR TO
THOSE IN PCES 1A-1D),PCES 3A-4C HAVE VEINS SIMILAR
TO THOSE IN PCES 1A-1D & THESE PCES MAY MAKE UP WHAT
APPEARS TO BE AN ALMOST VERTICAL PILLOW;
Alteration : MOD
PCES 1A-1D & MIDDLE OF 2B & ALL OF PCE 2C,PCES 1A-
1D LOCALLY ALTERED TO LIMONITE ALONG VEIN BORDERS,
PCES 2A-2D ALT.GLAS(2-3CM),PCES 3C+4A HAVE 0.5CM
THICK CLEAR CALCITE ALONG SIDE OF GLASS;
Comments : PCE 1D ENDS UNIT 1,PCES 2A-2D MAKE UP UNIT 2,PCE 3A
BEGINS UNIT 3,DARK GRAY BASALT,BASALT ALONG VEIN
BORDERS ALTERED TO TAN-GRAY,OBSERVATIONS TAKEN OF
ARCHIVE HALF;
Vesicles : Size(mm): TO 2 Percent: 2-3
Location: Filling: CALCITE,SMEC
Shape : ROUND,IRREG
SOME VESICLES FILLED WITH CALCITE OTHERS COATED
WITH DARK GREEN SMEC OR FILLED WITH MILKY-BLUE TO
BLUISH-GREEN SMEC OR WHITE AMORPHOUS MATERIAL,
CONCENTRATED IN ZONES IN PCES 1A-1B+1D(NEAR
GLASS);
Replacement: CALCITE
PCES 3C+4A HAVE CLEAR CALCITE ON SIDE OF GLASS,
PCES 2A-2D HAVE CLEAR CALCITE VEINS;
SMECTITE
DARK GREEN OR MILKY BLUE TO BLUISH-GREEN;
UNIDENTIFIED
WHITE AMORPHOUS MATERIAL FILLS SOME VESICLES;
LIMONITE
PCES 1A-1D ALONG VEIN BORDERS;
Leg : 73 Top/Bottom Interval(mm): 30/ 900 Analyst: Carman, M.
Hole: 522B Sample Midpoint (m) : 154.30
Core: 3 Top of Core Depth (m) : 148.90
Sect: 4 Top of Section Depth(m): 153.43
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (3-17), 2 (20-25), 3 (30-36), 4 (38-47),
5 (50-56), 6A (58-65), 6B (66-69), 7 (72-82),
8 (84-90);
Texture : APHYRIC,VERY FINE-TO-COARSE GRAINED,PCE 1 HAS
STEEPLY ORIENTED GLASS RIND WITH TEXTURE COARSENING
AWAY FROM GLASS,IRREGULAR TEXTURE VARIATION IN PCES
1-5,PCES 6A-8 COARSEN GRADUALLY DOWNWARD,PCE 6A HAS
GLASS RIND ON TOP,PCES 1-5 ANGULAR FRAGMENTS;
Structure : PILLOW BASALT(?),SMEC & CALCITE VEINS IN ALL PCES
EXCEPT FEWER IN NUMBER IN PCES 6A-8,PCES 1+4 HAVE
VERTICAL & HORIZONTAL & CONJUGATE(AT 45 DEGREES)
FRACTURE SETS DECREASING IN NUMBER IN PCES 6A-8,
FAULT ZONE SUGGESTED BY ANGULAR FRAGMENTS IN PCES
1-4;
Alteration : MOD
PCES 6A-6B+8;
MOD TO EXT
PCES 1-4+7;
EXT
PCE 5;
Comments : PCE 4 ENDS UNIT 4,PCE 6A BEGINS UNIT 5,PCE 5 IS MADE
UP OF 16 SMALL CHIPS & PCE 7 IS MADE UP OF NUMEROUS
SMALL PCES RANGING IN SIZE 0.5-5CM,PCES 1-4 GRAY,
PCES 6A-8 DARK GRAY,OBSERVATIONS TAKEN OF ARCHIVE
HALF;
Vesicles : Size(mm): TO 0.5 Percent: 5-8
Location: Filling: CALCITE,SMEC
PCES 6A-8 MORE VESICULAR THAN PCES 1-4;
Replacement: CALCITE
SMECTITE
Leg : 73 Top/Bottom Interval(mm): 0/1250 Analyst: Carman, M.
Hole: 522B Sample Midpoint (m) : 157.25
Core: 4 Top of Core Depth (m) : 156.00
Sect: 1 Top of Section Depth(m): 156.00
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1A (2-20), 1B (20-32), 1C (31-47), 1D (45-65),
2 (66-80), 3A (82-91), 3B (92-98), 3C (98-109),
3D (109-121);
Texture : APHYRIC,PCES 1A-1D VERY COARSE-GRAINED,LOWER 15CM OF
PCE 1D GRADES TO FINE-GRAINED,PCES 3A-3D GRAINSIZE
INCREASES DOWNWARD FROM FINE TO COARSE-GRAINED,PCE
3A HAS VARIABLE TEXTURE(FINE-TO-MEDIUM-COARSE-
GRAINED),PCE 2 HAS THICK GLASSY RIND ON TOP,FLOW
BOUNDARY(?) BETWEEN PCES 2+3A;
Structure : PILLOW BASALT(?),PCES 1A-1D HAVE SPARSE VEINS &
FRACTURES(WITH 3-15CM SPACING) WITH THE LATTER
FORMING CONJUGATE & HORIZONTAL SETS(30-45 DEGREES TO
CORE AXIS),PCES 2-3D HAVE CONJUGATE FRACTURE SETS AT
30-45 DEGREES TO CORE AXIS & SUBHORIZONTAL-SPACING
IS 2-5CM IN PCES 2-3B THEN WIDENING TO ABOUT 10CM
IN PCES 3C-3D,FRACTURES IN PCES 3A+3B ARE COVERED
WITH TURQUOISE-COLORED AMORPHOUS(?) MATERIAL & BLACK
SOOTY COATING PLUS FINE PYR XTLS(CU & MN
MINERALIZATION(?));
Alteration : FRESH
PCES 1A-1D;
MOD
PCES 3C-3D;
MOD TO EXT
PCES 2-3B PLUS TOP 2-3CM OF PCE 3C,PCES 3B+3C
STRONG ALTERATION ZONES(BROWN COLORATION) 1-2CM
WIDE PARALLEL TO FRACTURE SET,PCES 3A-3B FRACTURES
COVERED WITH TURQUOISE-COLORED AMORPHOUS(?)
MATERIAL WITH BLACK SOOTY COATING PLUS FINE PYR
XTLS,CU & MN MINERALIZATION(?) IN PCES 3A-3B;
Comments : PCE 1D ENDS UNIT 5 & PCE 2 BEGINS UNIT 6,
OBSERVATIONS MADE OF ARCHIVE HALF;
Vesicles : Size(mm): Percent: 4-8
PCES 1A-1D WITH TOP 10CM OF PCE 1A SLIGHTLY MORE
VESICULAR(5-8% VESICLES);
Size(mm): 3-4 Percent: 2-5
Location: Filling: SAPONITE
Shape : IRREG
TOP 11CM OF PCE 2 WITH SIZE & IRREGULARITY
INCREASING IN THE LOWER 2 CM OF THE PCE,ID
SAPONITE UNCERTAIN;
Replacement: SAPONITE
ID SAPONITE UNCERTAIN,ORANGE;
UNIDENTIFIED
TURQUOISE-COLORED AMORPHOUS(?) MATERIAL WITH AN
UNIDENT BLACK SOOTY COATING(FOUND IN FRACTURES OF
PCES 3A-3B);
FINE XTLS IN FRACTURES OF PCES 3A-3B;
Leg : 73 Top/Bottom Interval(mm): 0/1200 Analyst: Carman, M.
Hole: 522B Sample Midpoint (m) : 158.70
Core: 4 Top of Core Depth (m) : 156.00
Sect: 2 Top of Section Depth(m): 157.50
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1A (2-35), 1B (35-50), 1C (50-56), 1D (55-64),
2 (65-78), 3A (80-94), 3B (93-101), 3C (101-119);
Texture : APHYRIC,PCES 1A-1D COARSE-TO-VERY-COARSE-GRAINED,
UNIFORM TEXTURE TOP 47CM THEN BECOMING FINER-GRAINED
DOWNWARD TO A VERY THIN GLASSY COATING ON BASE OF
PCE 1D,TOP OF PCE 2 HAS 0.5CM GLASS RIND;
Structure : CONJUGATE JOINT SETS & FILLINGS SIMILAR TO CORE 4-1;
Alteration : FRESH
PCES 1A-1D;
MOD
PCE 3C;
MOD TO EXT
PATCHY DISCOLORATION GOVERNED BY FRACTURE SETS IN
PCES 2-3C;
Comments : PCE 1D ENDS UNIT 6,PCE 2 BEGINS UNIT 7,OBSERVATIONS
MADE OF ARCHIVE HALF;
Vesicles : Size(mm): TO 1 Percent: 1-2
PCES 1A-1D;
Size(mm): Percent: TO 3
VESICULARITY DECREASES FROM PCE 2 TO TOP OF PCE 3C
FROM 2-3% TO <1%;
Replacement: SAPONITE
ID SAPONITE UNCERTAIN,ORANGE;
UNIDENTIFIED
TURQUOISE-COLORED AMORPHOUS(?) MATERIAL WITH AN
UNIDENT BLACK SOOTY COATING;
FINE XTLS IN FRACTURES OF PCES 3A-3B;
SAME REPLACEMENT MINERAL ASSEMBLAGE AS CORE 4-1;
Leg : 73 Top/Bottom Interval(mm): 0/1500 Analyst: Carman, M.
Hole: 522B Sample Midpoint (m) : 161.90
Core: 5 Top of Core Depth (m) : 160.40
Sect: 1 Top of Section Depth(m): 160.40
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (2-8), 2 (11-13), 3A (16-25), 3B (25-36),
3C (35-42), 3D (42-50), 4 (53-57), 5A (58-61),
5B (61-76), 6 (78-86), 7 (88-103), 8 (106-110),
9A (120-126), 9B (113-120), 10 (129-137),
11 (141-148);
Texture : APHYRIC,VERY FINE-TO-MEDIUM-COARSE-GRAINED,ANGULAR
FRAGMENTS,PCES 1+3A+8-9B HAVE GLASS RINDS(PCE 1
GLASS IS PARALLEL TO CORE AXIS),GRAINSIZE INCREASES
GRADUALLY;
Structure : PILLOW BASALT(?),PCES 9A-9B GLASS CUT & PARALLELED
BY 0.5-1CM VEINS OF CALCITE,PCES 8-11 ABUNDANT
FRACTURES & VEINS(0.5-2CM SPACING) FILLED WITH
CALCITE & LINED WITH SMEC & MN.OXIDE DENDRITIC
COATING,PCE 11 MN.OXIDE FILLS CENTER OF RELATIVELY
THICK(3-4MM) VEIN OF CALCITE,PCES 1-7 ABUNDANT
(2-6CM SPACING) IRREGULAR & VARIOUSLY ORIENTED
FRACTURES WITH DARK GREEN CHLOR & GREEN MALACHITE
COATING,PCES 4+6 ANGULAR FRAGMENTS SUGGEST FAULTING
Alteration : MOD
PCES 3C-3D+5A-5B+7;
MOD TO EXT
PCES 1-3B+4+6+8-11;
Comments : PCE 7 ENDS UNIT 8,PCE 8 BEGINS UNIT 9,PCE 2 IS 2CM
ROLLER OF BRECCIA COMPOSED OF WHITE-TO-CLEAR VEIN OF
CALCITE ENCLOSING ANGULAR FRAGMENTS OF BLACK/ORANGE
PALAGONITIZED GLASS,PCE 4 MADE UP OF SEVEN PCES &
PCE 6 IS MADE UP OF NINE PCES(1-6CM);
Vesicles : Size(mm): 1 Percent: 1-2
PCES 1-7;
Size(mm): 0.25 Percent: 2-3
PCES 8-11;
Replacement: CALCITE
WHITE-TO-CLEAR IN PCE 8;
PALAGONITE
Minerals Replaced: GLASS
PCE 8;
CHLORITE
GREEN;
MALACHITE
GREEN;
SMECTITE
MANGANESE OXIDE
Leg : 73 Top/Bottom Interval(mm): 0/1450 Analyst: Carman, M.
Hole: 522B Sample Midpoint (m) : 163.35
Core: 5 Top of Core Depth (m) : 160.40
Sect: 2 Top of Section Depth(m): 161.90
LITHOLOGY: APHYRIC BASALT;
PILLOW BASALT;
Piece No. : PCES 1 (0-20), 2A (21-48), 2B (48-65), 2C (65-75),
2D (75-85), 2E (85-99), 2F (99-112), 2G (110-125),
2H (125-141);
Texture : APHYRIC,PCE 1 MADE UP OF ANGULAR FRAGMENTS,PCES 2A-
2H VERY FINE-TO-VERY-COARSE-GRAINED(SAME AS
OVERLYING UNITS),THIN 1MM GLASSY RIND ON PCE 2A WITH
TEXTURE GRADING FROM VERY FINE-GRAINED-TO-COARSE-
GRAINED WITHIN 10CM OF GLASS,PCE 2H IS VERY COARSE-
GRAINED;
Structure : PILLOW BASALT(?),IRREGULAR FRACTURES ON SPACING OF
1-5CM(MOST CONCENTRATED IN UPPER 18CM & LEAST IN
LOWEST 44CM),FRACTURES MOSTLY SMEC-FILLED IN UPPER
TWO-THIRDS OF SECTION & MORE OPEN & CALCITE-FILLED
IN LOWER ONE-THIRD;
Alteration : MOD
PCES 2A-2H,MOSTLY ALTERED PARALLEL TO FRACTURES
(APPROXIMATELY A 1CM ZONE);
EXT
PCE 1;
Comments : PCE 2C ENDS UNIT 9,PCE 2D BEGINS UNIT 10,PCE 1 MADE
UP OF MANY SMALL PCES 0.5-4CM(POSSIBLY FAULT ZONE OR
BRECCIATED COOLING UNIT BOUNDARY OR DRILLING
RUBBLE),DARK GRAY BASALT;
Vesicles : VESICULAR;
Replacement: SMECTITE
CALCITE
Leg : 73 Top/Bottom Interval(mm): 0/ 950 Analyst: Carman, M.
Hole: 522B Sample Midpoint (m) : 164.35
Core: 5 Top of Core Depth (m) : 160.40
Sect: 3 Top of Section Depth(m): 163.40
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1A (2-5), 1B (6-14), 2A (16-26), 2B (26-34),
2C (43-57), 3 (60-70), 4 (73-81), 5 (82-93);
Texture : APHYRIC,PCES 1A-1B VERY FINE-GRAINED AT TOP GRADING
DOWN TO EVEN MEDIUM-GRAINED,PCES 2A-5 SIMILAR
DOWNWARD GRADATION OF GRAINSIZE AS IN PCES 1A+1B;
Structure : SILL(?),BASALT FLOW(?),CALCITE-FILLED SHALLOW
DEPRESSIONS(1-2MM),PCE 5 FRACTURED;
Alteration : FRESH
PCES 1A-3;
EXT
PCE 4;
Vesicles : Size(mm): 0.25 Percent: <1
Location: Filling: SMEC
GREEN SMEC FILLS VESICLES IN PCES 1A-1B;
Size(mm): 0.5 Percent: 1
PCES 2A-4;
Size(mm): 0.5 Percent: 2-3
PCE 5;
Replacement: CALCITE
SMECTITE
GREEN;
Leg : 73 Top/Bottom Interval(mm): 0/ 800 Analyst: Carman, M.
Hole: 522B Sample Midpoint (m) : 168.20
Core: 6 Top of Core Depth (m) : 167.40
Sect: 1 Top of Section Depth(m): 167.40
LITHOLOGY: APHYRIC BASALT;
Piece No. : PCES 1 (2-8), 2 (10-16), 3 (18-22), 4 (25-28),
5 (30-42), 6 (44-52), 7 (54-60), 8 (62-66),
9 (69-78);
Texture : APHYRIC,PCE 2 VERY FINE-GRAINED GRADING DOWNWARD
(ORIENTATION UNCERTAIN) TO 3MM GLASSY RIND ON BASE,
PCE 3 IS FINE-TO-MEDIUM-GRAINED,PCE 4 VERY FINE-
GRAINED,PCES 5-9 MEDIUM-TO-COARSE-GRAINED;
Structure : BASALT FLOWS(?);
Alteration : FRESH
PCES 5+9;
MOD
PCES 1-2;
Comments : PCE 2 ENDS UNIT 12,PCES 3-9 MAKE UP UNIT 13,PCE 4
PROBABLY SHOULD BE ABOVE PCE 3,DARK GRAY BASALT;
Vesicles : Size(mm): 0.5-1 Percent: TO 5
Location: Filling:
Shape : IRREG
PCE 1;
Size(mm): <0.5 Percent: 2-3
PCE 2;
Size(mm): 0.25-1 Percent: TO 10
PCE 3;
Size(mm): TO 5 Percent:
Location: Filling: SMEC,PYR,CHALPYR
Shape : IRREG
PCE 7,VESICLES LINED WITH GREENISH-BLUE SMEC WITH
SOME CONTAINING TINY CLUSTERS OF EUHEDRAL CHALPYR
OR PYR XTLS;
Location: Filling: PYR
Shape : ROUND,IRREG
PCES 8-9 ARE LESS VESICULAR THAN PCE 7 WITH ROUND
& SOME IRREGULAR VESICLES FILLED WITH PYR;
Replacement: SMECTITE
PCES 5-9 GREENISH-BLUE SMEC;
CHALCOPYRITE
PCE 7,EUHEDRAL XTLS;
XTLS IN PCES 7-9;
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