Leg : 43 Top/Bottom Interval(mm): 1350/1370 Analyst: Houghton, R.
Hole: 386 Sample Midpoint (m) : 965.57
Core: 66 Top of Core Depth (m) : 964.20
Sect: 1 Top of Section Depth(m): 965.55
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCE 00-1 (135-137), 1 (137-150);
Texture : HYPOXTLN,FINE-GRAINED,PHYRIC;
Structure : PCE 1 EXTENSIVELY VEINED WITH WHITE CALCITE AND
CHLORITE PLUS (ZEOLITES?)-VEINS WITH HEAVY CHLORITE
ASSOCIATION;
Alteration : PCE 1 IS PARTIALLY ALTERED-VEINS COMMONLY HAVE
ALTERATION HALO OF 5Y5/6 (LIGHT OLIVE BROWN);
Comments : BASALT GENERALLY N2 (DARK GRAYISH BLACK),PCE 1
N2 AND OLIVE BLACK (5Y2/1);
Vesicles : Size(mm): Percent: 1-2
Location: Filling: CALCITE
AMYGDULES,BASALT IS AMYGDALOIDAL;
Replacement: CALCITE
CHLORITE
ZEOLITE
ID UNCERTAIN;
Phenocrysts: PLAGIOCLASE
LATHS;
Leg : 43 Top/Bottom Interval(mm): 0/1500 Analyst: Houghton, R.
Hole: 386 Sample Midpoint (m) : 967.20
Core: 66 Top of Core Depth (m) : 964.20
Sect: 2 Top of Section Depth(m): 965.70
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : 1 (0-6), NO PCE NUMBER (6-7), 3 (7-13), 3A (13-20),
3B (13-20), 3 (20-23), 4 (23-35), 5 (35-40),
6 (40-44), 7 (44-46), 8 (46-52), 9 (52-61),
10 (61-67), 11 (67-75), 12 (75-84), 13 (84-93),
14 (93-100), 15 (100-107), 16 (107-112),
17 (112-117), 17A (117-127), 18 (127-133),
19 (133-140), 20 (140-144), 20A (144-147),
21 (147-154);
Texture : HYPOXTLN,FINE-GRAINED,PHYRIC;
Structure : HYDROTHERMAL VEIN OF CALCITE WITH CHLORITIC
ALTERATIONS AND BASALT CLASTS INTO BASALT, VEIN
CONTAINS PLUCKED BASALT CLASTS ALTERED COMPLETELY
OR ALMOST SO TO CHLORITE IN CALCITE MATRIX
(DESCRIPTION ATTACHED TO THIN-SECTION DESCRIPTION
FOR CORE-NOT CERTAIN IT BELONGS HERE), IN PCE 1
AND FROM 6-7CM EXTENSIVELY VEINED WITH WHITE ITE
CALCITE AND CHLORITE PLUS (ZEOLITES?) -VEINS WITH
HEAVY CHLORITE ASSOCIATION,IN PCE 2 LOWER PORTION
INTERSECT VEINING DOMINATED BY CHLORITE (WHITE TO
CLEAR CALCITE PRESENT IN VEINS,IN PCE 3 VEIN
MATERIAL PREDOMINANTLY CHLORITE WITH MINOR CALCITE
CLINGING TO SMALL PIECE OF N2 BASALT, IN PCE 3
21.6MM VEIN OF 5GY6/2 (GRAYISH-GREEN) CHLORITE (?)
WITH SERPENTINE (?) - GREENISH BLACK CORE, PCE 4
AND PCE 7 N2 BASALT WITH CHLORITIC VEIN SURFACE
AND COMMON CALCITE AND CHLORITE VEINING THROUGHOUT
PCE 5 LIKE PCE 4 BUT LITTLE CHLORITE AND MINOR
CALCITE VEINING,IN PCE 6 4.1MM CALCITE VEIN PLUS
MINOR VEINING WITH ASSOCIATED CHLORITIC VEIN,IN PCE
8 3 PIECES BASALT BETWEEN 5G2/1 (GREENISH-BLACK)
AND N2 (GRAYISH BLACK) -FRAGMENTS BROKEN LARGELY
ALONG HYDROTHERMAL INTERSECTING VEINS OF CHLORITE
AND CALCITE-SOME DK GREEN CHLORITIC FRAGMENTS LOOK
LIKE CLASTS IN THE VEINS,IN PCE 9 9-INCH CAP OF
N2 BASALT INVADED BY A SEGREGATION OF CALCITE-
IRREGULAR EDGE WITH NARROW ALTERATION PATTERN-VEIN
MATERIAL MOSTLY CALCITE WITH PARTICULATE INCLUSIONS
OF HIGHLY ALTERED GREEN BASALT+CHLORITE ETC-VERY
SPECKLED APPEARANCE,IN PCE 10 HYDROTHERMAL VEIN-
ROCK, IN PCE 11 THRU 16 SPECKLED VEIN ROCK GIVES WAY
TO LARGE PORTIONS OF 5BG5/2 (GRAYISH BLUE-GREEN) AND
10GY5/2 (GRAYISH-GREEN) AND WHITE, PCE 12 HAS LOCAL
PATCH OF SPECKLED MATERIAL AND PATCHES OF 5GY7/2
(GRAYISH YELLOW-GREEN) (EPIDOTE?),IN PCE 13 HAVE
TWO SUBROUNDED TO SUBANGULAR ENCLOSURES (INCLUSION?)
OF ALTERED BASALT (N2) - THE LARGEST IS AT LEAST
3X3X3CM,IN PCE 14 HAVE SEVERAL ENCLOSURES -LESS
CALCITE AND THAT PRESENT ONLY IN DISCRETE VEINS-
ENCLOSURES ARE LIKE PEELS OF A PILLOW TOP OR PEELS
OF VEIN WALL ROCK-LARGEST 1X2CM-ENCLOSURES VERY
ANGULAR,IN PCE 15 ALMOST ALL CALCITE AND
ENCLOSURES,IN PCE 16 ENCLOSURES SURROUNDED BY
ANGULAR GREENISH-GRAY (5Y6/1) ALTERATION RIMS,IN
PCE 17 ENCLOSURES UP TO 5X3CM CONTAINING EARLIER
CALCITE VEINS,IN PCE 18 THIN CALCITE VEINLET,PCE 19
VEINED MODERATELY WITH CHLORITE OR SERPENTINE,IN
PCE 21 SEGREGATION OF CALCITE+CHLORITE+EPIDOTE(?)+
SERPENTINE(?);
Alteration : FRESHEST BASALT IS LOWEST PCE IN SECTION (CORE
CATCHER),PCE 3B MODERATELY HIGHLY ALTERED BASALT,
PCE 13 HAS TWO SUBROUNDED TO SUBANGULAR ENCLOSURES
OF ALTERED BASALT,PCE 20A IS 3 PIECES OF HIGHLY
ALTERED BASALT (IN BAG);
Comments : BASALT GENERALLY N2 (DARK GRAYISH BLACK),BASALT
BELOW CONTACT IS STAINED WITH NATIVE SULFUR,CALCITE
SEGREGATION IS FROM 59-128CM,CONTACTS WITH VEIN
EITHER ON SLICKENSIDED CHLORITE WITH MINOR
SERPENTINE OR VERY IRREGULAR,FROM 6-7CM N2 VERY
DOMINANT,IN PCE 2 N2 IN UPPER PORTION-LOWER PORTION
IS ALMOST ENTIRELY 5GY3/2 (GRAYISH OLIVE-GREEN),
IN PCE 2 CLASTS RANGE FROM CLAYS TO 8.2MM AND TEND
TOWARD 10GY3/2 (DUSKY YELLOWISH-GREEN) IN COLOR
AND ARE DEGRADATION AND FAULT GANGE OF BASALT
(ALTERED),IN PCE 2 FAULT(?) SURFACE YELLOWISH-GREEN
VARYING AROUND 10GY3/2,PCE 3C STORED IN POLYETHYLENE
BAG WITH TWO N2 BASALTS (5.85X2.62X3.80CM) AND
(3.50X4.22X1.19CM) EACH WITH SLICKENSIDED 5GY5/2
(DUSKY YELLOW-GREEN) CHLORITE ON ONE FACE,PCE 4
AND PCE 7 ARE N2 BASALT WITH CHLORITE VEIN,PCE 6
IS N2 BASALT,PCE 16 DARKENED TO 5GY2/1 (GREENISH-
BLACK)-ENCLOSURES ALL SURROUNDED BY ANGULAR
GREENISH-GRAY (5GY6/1) ALTERATION RIMS-BASALT
COMMONLY BETWEEN 5GY4/1 (DK GREENISH GRAY) AND N4
(MDM DK GRAY),PCE 17 SLICKENSIDED SERPENTINIZE(?),
PCE 17A IS BAG OF SLICKENSIDED SERPENTINE AND
CHLORITE ROCK FROM FAULT MARGIN,PCE 18 IS GREENISH
BLACK (5G2/1) TO GRAYISH BLACK (N2) -ONE SURFACE OF
SLICKENSIDED SERPENTINE(?),PCE 20 IS BASALT (5G2/1)
WITH SMALL SURFACE OF SLICKENSIDED CHLORITE,PCE 21
HAS COLOR AS IN PCE 10 BUT PATCH AS IN PCE 12 AND
SURFACE IS COATED WITH 5Y7/6 (MOD YELLOW) SULFUR(?);
Vesicles : Size(mm): Percent: <1
Location: Filling: CALCITE
AMYGDULES IN PCE 8;
Phenocrysts: PLAGIOCLASE
LATHS;
Replacement: CHLORITE
CALCITE
PCE 15 ALMOST DEVOID OF CALCITE;
EPIDOTE
ID UNCERTAIN;
SERPENTINITE
ZEOLITE
ID UNCERTAIN FOR ZEOLITE;
Leg : 43 Top/Bottom Interval(mm): 0/ 420 Analyst: Houghton, R.
Hole: 386 Sample Midpoint (m) : 967.62
Core: 66 Top of Core Depth (m) : 964.20
Sect: CC Top of Section Depth(m): 967.30
LITHOLOGY: PLAG PHYRIC BASALT;
Piece No. : PCE CC-1 (0-13), CC #2A+2B+2C (13-24),
NO PCE NUMBER (24-32), NO PCE NUMBER (32-41),
NO PCE NUMBER (41-42);
Alteration : FRESHEST MATERIAL RECOVERED IN THIS SECTION,
MODERATELY ALTERED WITH CHLORITE;
Structure : BROKEN FRAGMENTS OF BASALT COMMONLY VEINED WITH
CALCITE,MINOR CALCITE STRINGERS FROM 140-149CM;
Comments : FROM 140-149CM N3 (DARK GRAY) BASALT AND SURFACE
STAINING OF 5Y4/6 (SULFUR?),FROM 121-132CM COLOR
IS 5G2/1,FROM 108-121 COLOR IS N2;
Replacement: CALCITE
CHLORITE
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