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Core Data from the Deep Sea Drilling Project


Leg : 65    Top/Bottom Interval(mm):    0/ 400  Analyst: Flower, M.
Hole: 482C  Sample Midpoint (m)    :   132.40
Core:   9   Top of Core Depth (m)  :   132.00
Sect:  1    Top of Section Depth(m):   132.00

LITHOLOGY: SEDIMENT;

  Piece No.  : PCE 1 (0-40);


Leg : 65    Top/Bottom Interval(mm):  400/ 580  Analyst: Flower, M.
Hole: 482C  Sample Midpoint (m)    :   132.58
Core:   9   Top of Core Depth (m)  :   132.00
Sect:  1    Top of Section Depth(m):   132.40

LITHOLOGY: SEDIMENT;
           DOLOMITE;

  Piece No.  : PCES 2 (42-47), 3A (50-54), 3B (55-58);


Leg : 65    Top/Bottom Interval(mm):  580/1500  Analyst: Flower, M.
Hole: 482C  Sample Midpoint (m)    :   133.50
Core:   9   Top of Core Depth (m)  :   132.00
Sect:  1    Top of Section Depth(m):   132.58

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 4 (61-64), 5 (66-68), 6 (71-74), 7 (75-78),
               8 (80-86), 9 (88-98), 10 (100-105), 11 (107-116),
               12 (115-120), 13 (120-126), 14 (126-130),
               15 (131-140), 16 (142-148);

  Texture    : APHYRIC;

  Structure  : FRAGMENTS OF VEIN FILLED WITH CALCITE AND
               DISSEMINATED SULFIDE AND SOME SMECTITE IN PCE 4,
               SIMILAR FILLED CRACKS IN LOWER SECTIONS BUT WITH
               SULFIDE AND OTHER MINERALS, MASSIVE;

  Alteration : SLIGHTLY
               PCE 4 HAS ALTERATION HALO NEAR VEIN WITH ADJACENT
               FRESH ROCK, PCES 10-16 ARE FRESH;

  Comments   : TOP OF BASEMENT SECTION BASALT-SEDIMENT CONTACT NOT
               PRESERVED AS IN 482B;

  Vesicles   : Size(mm):            Percent:    <2
               Location:            Filling: SMECTITE
               VERY SMALL AMYGOULES PERSIST THROUGHOUT MOST OF
               CORE;

  Replacement: SULFIDES
               DISSEMINATED SULFIDES VISIBLE IN BASALT NEAR TOP
               OF SECTION & PARTICULARLY NEAR VEINS;

               SMECTITE

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/ 250  Analyst: Flower, M.
Hole: 482C  Sample Midpoint (m)    :   133.75
Core:   9   Top of Core Depth (m)  :   132.00
Sect:  2    Top of Section Depth(m):   133.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-4), 2 (5-9), 3 (11-19), 4 (20-25);

  Texture    : APHYRIC;

  Structure  : HARILINE CRACKS, MASSIVE;

  Alteration : FRESH
               HARILINE CRACKS SHOWING INCIPIENT ALTERATION;

  Comments   : CONTINUING LITHOLOGY FROM CORE 9-1;

  Vesicles   : Size(mm):            Percent:    <1
               Location:            Filling: SMECTITE
               MICROAMYGDOULE OF SMECTITE;

  Replacement: SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Schmincke, H.
Hole: 482C  Sample Midpoint (m)    :   140.50
Core:  10   Top of Core Depth (m)  :   139.00
Sect:  1    Top of Section Depth(m):   139.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1A (1-10), 1B (9-17), 1C (18-24), 1D (25-29),
               1E (30-35), 1F (35-45), 1G (46-60), 2A (60-71),
               2B (72-81), 3 (82-93), 4A (94-110), 4B (110-125),
               5A (127-138), 5B (138-150);

  Texture    : MEDIUM GRAINED, APHYRIC;

  Structure  : FRACTURED WITH MOSTLY SUBVERTICAL AND SUBHORIZONTAL
               FRACTURES, PCES 1A-G BY SUMBERTICAL FRACTURE 0.3 TO
               0.8MM WIDE(1A-C) THAT DECREASES TO HAIRLINE
               FRACTURE AND LINED WITH BROWNISH SULFIDE
               (CHALCOPYRITE?) FOLLOWED BY PYRITE(?), FRACTURES
               GENERALLY LINED WITH SMECTITE AND SULFIDE RARELY
               CARBONATE, MASSIVE;

  Alteration : SLIGHTLY
               PCES 1A-G ARE STRONGLY ALTERED, VEIN HAS
               PRONOUNCED BLEACHED ALTERATION HALO CONSISTING OF
               1)A DARK INNER ZONE OF SMECTITE(?) 2) BLUISH-WHITE
               ZEOLITES(?) 3) A DARK OUTER RIM & OUTWARD
               PROTRUSIONS ALONG CROSS FRACTURES, DIFFUSE
               ALTERATION OUTSIDE MAIN HALO CONSISTS OF SULFIDE
               N VESICLES AND GROUNDMASS & IN SPOTTY BLEACHED
               AREAS;

  Comments   : GRAIN SIZE & COLOR & VESICLES SUGGEST THAT CORE
               CONTINUES FROM 9-2;

  Vesicles   : Size(mm):     .5-1   Percent:    12
               Location:            Filling: SMECTITE,CARB
               THROUGHOUT CORE VESICLES ARE FILLED WITH GREEN
               SMECTITE(?) & LARER VESICLES ALSO WITH CARBONATE
               IN CENTRAL PART, PARTLY VUGGY OPEN CAVITIES WITH
               SOME CALCITE AND ZEOLITE(?) GROWING ON SULFIDE
               CRYSTALS;

  Replacement: SULFIDE
               DISSEMINATED THROUGHOUT ROCK;

               SMECTITE

               CARBONATE

               PYRITE
               ID PYRITE UNCERTAIN;

               ZEOLITE
               ID ZEOLITES UNCERTAIN;


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Zolotarev, B.
Hole: 482C  Sample Midpoint (m)    :   142.00
Core:  10   Top of Core Depth (m)  :   139.00
Sect:  2    Top of Section Depth(m):   140.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1A (0-7), 1B (3-13), 1C (12-17), 1D (18-29),
               2 (30-39), 3 (40-50), 4 (51-97), 5A (89-94),
               5B (94-120), 5C (121-127), 6 (130-140), 7 (142-150);

  Texture    : MEDIUM GRAINED, APHYRIC;

  Structure  : IRREGULAR VERY THIN FRACTURES PCES(1D,5A,5C,7)
               FILLED WITH DARK MATERIAL(CLAY MINERALS?) AND
               CARBONATE AND RARE PYRITE, MASSIVE;

  Alteration : SLIGHTLY TO MODERATE;

  Comments   : GREY;

  Vesicles   : Size(mm):     .5-3   Percent:   1-3
               Location:            Filling: PYRITE,CARB,CLAY
               OCCUR IRREGULARLY & FILLED WITH WHITE AND GREY
               MATERIAL;

  Replacement: PYRITE
               RARE;

               CLAY

               CARBONATE


Leg : 65    Top/Bottom Interval(mm):    0/1140  Analyst: Schmincke, H.
Hole: 482C  Sample Midpoint (m)    :   143.14
Core:  10   Top of Core Depth (m)  :   139.00
Sect:  3    Top of Section Depth(m):   142.00

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCES 1 (0-5), 2 (7-15), 3 (18-27), 4 (29-35),
               5 (37-50), 6 (52-58), 7 (60-70), 8 (72-83),
               9 (85-95), 10 (97-105), 11 (107-114);

  Texture    : APHYRIC, MEDIUM GRAINED;

  Alteration : FRESH;

  Comments   : RELATIVELY UNFRACTURED, GREY, SAME COOLING UNIT AS
               10-2 BUT SLIGHTLY FINER GRAINED;

  Vesicles   : Size(mm):     .5-3   Percent:    <3
               Location:            Filling: SMECTITE,CARB,

               Location:            Filling: ZEOLITE
               SPARSELY VESICULAR, SMALLER VESICLES FILLED WITH
               GREEN SMECTITE(?)-LARGER WITH ADDITIOAL CARBONATE
               AND ZEOLITE(?) IN CENTRE;

  Replacement: SMECTITE

               ZEOLITE

               CARBONATE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482C  Sample Midpoint (m)    :   149.50
Core:  11   Top of Core Depth (m)  :   148.00
Sect:  1    Top of Section Depth(m):   148.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-10), 2 (14-23), 3 (25-35), 4 (40-46),
               5 (47-60), 6 (60-66), 7 (68-72), 8A (73-87),
               8B (78-88), 8C (87-92), 9 (94-110), 10 (113-129),
               11 (121-130), 12 (130-134), 13 (135-145),
               14 (141-150);

  Texture    : AHPYRIC, MEDIUM GRAINED;

  Structure  : HAIRLIN CRACKS FILLED WITH CALCITE AND SMECTITE,
               MASSIVE;

  Alteration : SLIGHTLY
               ALTERATION MAY BE MORE ADVANCED THAN IN EQUIVALENT
               SEQUENCE IN 482B BUT IS NOT PERVASIVE;

  Comments   : CONTINUOUS SECTION, GREY;

  Vesicles   : Size(mm):            Percent:    <2
               Location:            Filling: SMECTITE
               IN SOME PCES;

  Replacement: SMECTITE
               SMECTITE REPLACEMENT IN GROUNDMASS IS PATCHY
               PROBABLY ASSOCIATED WITH FRACTURES;

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482C  Sample Midpoint (m)    :   151.00
Core:  11   Top of Core Depth (m)  :   148.00
Sect:  2    Top of Section Depth(m):   149.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (1-13), 2 (14-29), 3A (31-36), 3B (35-43),
               3C (43-49), 4 (50-54), 5 (55-65), 6 (66-85),
               7 (85-90), 8 (90-96), 9 (97-119), 10 (120-134),
               11 (135-150);

  Texture    : APHYRIC, MEDIUM GRAINED EXCEPT FOR PCES 3-6;

  Structure  : MASSIVE;

  Alteration : EXTENSIVE
               PCES 2A-C ARE APPROXIMATELY 30-50% SMECTITE AND
               OTHER SECONDARY MINERALS;
               SLIGHT TO MODERATE
               PCES 1 AND 3-11;

  Comments   : LESS ALTERED THAN 11-1 BUT OTHERWISE IDENTICAL IN
               LITHOLOGY;

  Replacement: SMECTITE
               PCES 2A-C ARE APPROXIMATELY 30-50% SMECTITE AND
               OTHER SECONDARY MINERALS;


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Morrison, M. Ann
Hole: 482C  Sample Midpoint (m)    :   152.50
Core:  11   Top of Core Depth (m)  :   148.00
Sect:  3    Top of Section Depth(m):   151.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1A (0-6), 1B (6-23), 2 (25-52), 3 (53-68),
               4 (70-74), 5 (75-80), 6A (83-93), 6B (93-104),
               7 (105-112), 8 (114-124), 9 (125-134), 10 (135-136),
               11A (138-145), 11B (146-150);

  Texture    : APHYRIC;

  Structure  : MASSIVE, HAIRLINE FRACTURES, SMECTITE AROUND VEINS;

  Alteration : FRESH
               LESS ALTERED THAN 11-2, PCES(1,2,4) SHOW
               ALTERATION ADJACENT TO HAIRLNE FRACTURES;

  Comments   : GREY, CONTINUATION OF COOLING UNIT IN 11-2;

  Vesicles   : Size(mm):            Percent:     0

  Replacement: SMECTITE
               GROWTH OF SMECTITE IN GROUNDMASS;


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Morrison, M. Ann
Hole: 482C  Sample Midpoint (m)    :   154.00
Core:  11   Top of Core Depth (m)  :   148.00
Sect:  4    Top of Section Depth(m):   152.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-8), 2 (10-14), 3 (15-24), 4 (25-35),
               5 (36-45), 6 (46-49), 7 (51-53), 8 (55-63),
               9 (63-68), 10 (70-75), 11 (75-81), 12 (82-90),
               13 (90-109), 14 (110-121), 15 (123-130),
               16 (131-140), 17 (142-150);

  Texture    : APHYRIC, PCES 16 & 17 DISTINCTLY FINER GRAINED THAN
               REST OF SECTION;

  Structure  : THIN SMECTITE AND CALCITE VEINS IN PCES(8.9.16.17);

  Alteration : FRESH
               NO OBVIOUS ALTERATION HALOS BUT PLAG PHENOS ARE
               REPLACED BY MIXTURE OF SMEC & CALCITE;

  Comments   : SAME UNIT AS 11-3, GREY;

  Phenocrysts: PLAGIOCLASE
               Size(mm):        1-2
               APPROXIMATELY SIX CRYSTALIZED PCES IN 11-4,
               APPEARANCE OF SMALL PHENOS AT BASE OF MASSIVE UNIT
               VERY SIMILAR TO FIRST UNIT I HOLE 482B;

  Replacement: ZEOLITE

               CALCITE
               PLAG PHENOS REPLACED BY A MIXTURE OF ZEOLITE AND
               CALCITE;


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Morrison, M. Ann
Hole: 482C  Sample Midpoint (m)    :   158.50
Core:  12   Top of Core Depth (m)  :   157.00
Sect:  1    Top of Section Depth(m):   157.00

LITHOLOGY: PLAG PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1A (0-9), 1B (8-16), 1C (16-26), 1D (26-36),
               1E (36-69), 2 (70-71), 3A (73-74), 3B (73-150);

  Texture    : PHYRIC, GRAIN SIZE INCREASES DOWN FROM PCE 1 TO 3,
               PCE 1 IS FINE GRAINED WITH NO OBSERVABLE GLASSY
               RIND;

  Structure  : RARE THIN VEINS LINED WITH SMECTITE, MASSIVE;

  Alteration : FRESH;

  Comments   : GREY, DIFFERENT COOLING UNIT TO THAT OF CORE 11;

  Vesicles   : Size(mm):            Percent:     1
               Location:            Filling: SMECTITE
               OCCASSIONAL VESICLES FILED WITH SMECTITE;


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Morrison, M. Ann
Hole: 482C  Sample Midpoint (m)    :   160.00
Core:  12   Top of Core Depth (m)  :   157.00
Sect:  2    Top of Section Depth(m):   158.50

LITHOLOGY: PLAG PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1A (0-6), 1B (6-20), 1C (20-29), 2A (31-38),
               2B (38-42), 3 (43-46), 4A (47-55), 4B (55-63),
               5 (64-70), 6A (72-78), 6B (78-84), 6C (85-100),
               6D (101-110), 6E (110-118), 6F (119-128),
               7 (130-133), 8 (135-140), 9 (142-150);

  Texture    : PHYRIC, GRAIN SIZE SLIGHTLY COARSER THAN 12-1 AND
               STILL INCREASING TOWARD BASE OF SECTION;

  Structure  : OCCASIONAL SMECTITE LINED FRACTURE APPEAR DEVOID OF
               ALTERATION HALOS, MASSIVE;

  Alteration : FRESH;

  Comments   : GREY, SAME UNIT AS 12-1;

  Vesicles   : Size(mm):            Percent:   1-2
               Location:            Filling: SMECTITE,ZEOLITE
               MANY VESICLES MOSTLY FILLED WITH SMECTITE AND SOME
               LARGER ONES MAY HAVE CORE OF ZEOLITE;

  Phenocrysts: PLAGIOCLASE               (    5%)
               Size(mm):     TO 5-6
               LARGE ARE UP TO 5-6MM WITH AVG 1-2MM IN LENGTH;

  Replacement: SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/ 190  Analyst: Morrison, M. Ann
Hole: 482C  Sample Midpoint (m)    :   160.19
Core:  12   Top of Core Depth (m)  :   157.00
Sect:  3    Top of Section Depth(m):   160.00

LITHOLOGY: PLAG MOD PHYRIC BASALT;

  Piece No.  : PCE 1A (0-13), 1B (13-19);

  Texture    : PHYRIC;

  Structure  : SAMPLE BROKE ALONG SMECTITE LINED FRACTURES UP TO
               1-2MM WIDE, MINUTE SPECKS OF SULFIDE OCCUR INSIDE
               THE VEINS;

  Alteration : FRESH
               THIN 1-2MM WIDE ALTERATION HALOS ALONG FRACTURES;

  Comments   : SAME AS 12-1 AND 12-2;

  Phenocrysts: PLAGIOCLASE               ( TO 5%)

  Replacement: SMECTITE

               SULFIDE


Leg : 65    Top/Bottom Interval(mm):    0/ 300  Analyst: Schmincke, H.
Hole: 482C  Sample Midpoint (m)    :   161.80
Core:  13   Top of Core Depth (m)  :   161.50
Sect:  1    Top of Section Depth(m):   161.50

LITHOLOGY: PLAH SPARSELY PHYRIC BASALT;

  Piece No.  : PCE 1 (0-3);

  Texture    : PHYRIC;

  Comments   : DARK BROWN 1-3MM INDURATED(BAKED?) FORAMINEFERAL
               MUDSONE COATING "MINI PILLOW" WITH 1-2MM THICK
               BLUISH GLASS(DEVITRIFIED) OVERLYING 1MM VARIOLOTIC
               ZONE;

  Phenocrysts: PLAGIOCLASE               (   <3%)
               Size(mm):       TO 4


Leg : 65    Top/Bottom Interval(mm):  500/1320  Analyst: Schmincke, H.
Hole: 482C  Sample Midpoint (m)    :   162.82
Core:  13   Top of Core Depth (m)  :   161.50
Sect:  1    Top of Section Depth(m):   162.00

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 2 (5-14), 3A (17-21), 3B (23-27), 3C (27-28),
               4 (29-34), 5 (35-53), 6A (54-65), 6B (66-75),
               7 (72-80), 8 (82-90), 9 (90-100),10 (100-106),
               11A (107-117), 11B (113-132), 12 (134-135),
               13 (135-142);

  Texture    : PHYRIC, FINE-MEDIUM GRAINED;

  Structure  : RARE HAIRLINE FRACTURES LINED WITH SMECTITIE,
               MASSIVE;

  Alteration : SOME PCES IN 2-5 & 8 HAVE MORE ALTERED RINDS-
               PEBBLES OR WEATHERING(?);

  Comments   : GREY;

  Vesicles   : Size(mm):     TO 2   Percent:   1-5
               Location:            Filling: SMECTITE,CLAY
               DOWNWARD DECREASE IN AMOUNT AND SIZE OF VESICLES
               FROM 3-5% AND UP TO 2MM TO <1% AND 1MM, ABUNDANT
               SEGREGATION VESICLES IN PCES 2 TO 5 FILLED WITH
               GREEN SMECTITE(?) AND LARGER VESICLES ALSO WITH
               VERY PALE GREEN CLAY WITH SHRINKAGE CRACKS IN
               CENTER;

  Phenocrysts: PLAGIOCLASE               (   <3%)
               Size(mm):       TO 4

  Replacement: SMECTITE

               SULFIDE

               CLAY


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Schmincke, H.
Hole: 482C  Sample Midpoint (m)    :   164.50
Core:  13   Top of Core Depth (m)  :   161.50
Sect:  2    Top of Section Depth(m):   163.00

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1A (0-14), 1B (14-30), 1C (30-40), 1D (40-90),
               1E (90-117), 2 (121-130), 3A (132-136),
               3B (136-149);

  Texture    : PHYRIC, MEDIUM GRAINED, FINER GRAINED THAN 13-3;

  Structure  : SMECTITE ALONG RARE HAIRLNE FRACTURES, MASSIVE;

  Alteration : FRESH;

  Comments   : UNIT CONTINUES FROM 13-1 ND INTO 13-3;

  Vesicles   : Size(mm):       <1   Percent:    <1
               Location:            Filling: SMECTITE
               PCE 3A HAS VESICLES UP TO 2MM;

  Phenocrysts: PLAGIOCLASE               (   <3%)
               Size(mm):         <4

  Replacement: SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Zolotarev, B.
Hole: 482C  Sample Midpoint (m)    :   166.00
Core:  13   Top of Core Depth (m)  :   161.50
Sect:  3    Top of Section Depth(m):   164.50

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES  (0-53), 2 (54-60), 3 (61-74), 4A (75-83),
               4B (83-90), 5 (90-95), 6 (97-102), 7 (104-135),
               8 (137-142), 9 (144-150);

  Texture    : PHYRIC, MEDIUM GRAINED;

  Structure  : THIN FRACTURES IN PCES(1,3,4,8) FILLED WITH GREENISH
               MATERIAL(SMECTITE?) AND SPARSE CALCITE, MASSIVE;

  Alteration : FRESH;

  Comments   : GREY;

  Vesicles   : Size(mm):   .5-2.5   Percent:
               Location:            Filling: SMECTITE,PYRITE
               VESICLES OCCUR UNEVENLY AND FILLED WITH GREENISH
               MATERIAL(SMECTITE) AND VERY RARE PYRITE;

  Phenocrysts: PLAGIOCLASE               (  1-3%)
               Size(mm):      1.5-4

  Replacement: PHENOS OCCUR UNEVENLY FROM 1% PCE 1 TO 3% PCE 7;

               SMECTITE
               GREENISH MATERIAL MAY BE SMECTITE;

               PYRITE


Leg : 65    Top/Bottom Interval(mm):    0/ 200  Analyst: Schmincke, H.
Hole: 482C  Sample Midpoint (m)    :   166.20
Core:  14   Top of Core Depth (m)  :   166.00
Sect:  1    Top of Section Depth(m):   166.00

LITHOLOGY: MICROPILLOW;

  Piece No.  : PCE 1 (0-2);

  Texture    : CRUST OF DEVITRIFIED PARTLY PALAGONITIZED GLASS AND
               VERY THIN PATCH OF BROWN INDURAED(BAKED?) MUDSTONE
               CENTRAL ZONE BROWNISH TACHYLITE;

  Alteration : FRESH;

  Comments   : ALMOST IDENTICAL TO "MICROPILLOW" AT TOP OF 13-1 AND
               MAY COME FROM SAME HORIZON;


Leg : 65    Top/Bottom Interval(mm):   20/1500  Analyst: Schmincke, H.
Hole: 482C  Sample Midpoint (m)    :   167.50
Core:  14   Top of Core Depth (m)  :   166.00
Sect:  1    Top of Section Depth(m):   166.02

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 2A (3-20), 2B (20-34), 2C (33-40), 2D (38-49),
               3 (51-58), 4 (60-65), 5 (66-72), 6 (78-83),
               7 (85-90), 8 (92-95), 9 (97-102), 10 (103-109),
               11 (110-123), 12 (125-133), 13 (134-142),
               14 (144-150);

  Texture    : MOTTLED, MEDIUM GRAINED, PHYRIC;

  Structure  : ALONG RARE FRACTURE SURFACES-PCE 14 THERE ARE GREEN
               SLICKENSIDED MINERALS MAY BE CHLORITE(?), MASSIVE;

  Alteration : SLIGHTLY
               SMECTITE ALTERATION MAY BE MORE PERVASIVE, MAFICS
               ARE OXIDIZED(?), ON TOP OF PCE 5 WHICH MAY HAVE
               HIGHER GRADE ALTERATION ASSEMBLAGE;

  Comments   : VERY SIMILAR TO CORE 13 AND PROBABLY CONTINUATION OF
               SAME(?) THICK COOLING UNIT, BASALT IN CORES 13 & 14
               HAS YELLOWISH OUTER SURFACE;

  Vesicles   : Size(mm):       <1   Percent:    <1

  Phenocrysts: PLAGIOCLASE               (   <3%)
               Size(mm):        0.5

  Replacement: CHLORITE
               ID UNCERTAIN OF THIS SLICKENSIDED MINERAL;


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Zolotarev, B.
Hole: 482C  Sample Midpoint (m)    :   169.00
Core:  14   Top of Core Depth (m)  :   166.00
Sect:  2    Top of Section Depth(m):   167.50

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-7), 2A (10-15), 2B (25-32), 2C (33-37),
               2D (39-44), 3 (46-52), 4 (55-63), 5A (65-71),
               5B (72-80), 5C (80-85), 5D (86-90), 53 (91-104),
               5F (104-119), 6 (120-134), 7 (135-143), 8 (144-150);

  Texture    : MEDIUM GRAINED, PHYRIC, SOME GLOMERAPHYRIC
               SEGREGATION OF PLAGIOCLASE;

  Structure  : SOME FRACTURES PCES (1A-D,5) FILLED WITH SMECTITE
               AND CALCITE, MASSIVE;

  Alteration : MOD-SLIGHT;

  Comments   : GREY;

  Vesicles   : Size(mm):            Percent:     0
               NONE OBVIOUS;

  Phenocrysts: PLAGIOCLASE               (  2-3%)
               Size(mm):      1.5-4

  Replacement: CALCITE

               SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1450  Analyst: Zolotarev, B.
Hole: 482C  Sample Midpoint (m)    :   170.45
Core:  14   Top of Core Depth (m)  :   166.00
Sect:  3    Top of Section Depth(m):   169.00

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1A (0-19), 1B (1938), 1C (38-56), 1D (56-67),
               1E (66-78), 1F (78-87), 2A (89-100), 2B (100-110),
               2C (110-116), 2D (115-130), 2E (130-143);

  Texture    : PHYRIC, MEDIUM GRAINED;

  Structure  : NO FRACTURES, MASSIVE;

  Alteration : FRESH;

  Comments   : GREY, SIMILAR O 14-2;

  Vesicles   : Size(mm):            Percent:     0
               NONE OBVIOUS;

  Phenocrysts: PLAGIOCLASE               (  1-2%)
               Size(mm):        1-3


Leg : 65    Top/Bottom Interval(mm):    0/1400  Analyst: Schmincke, H.
Hole: 482C  Sample Midpoint (m)    :   171.90
Core:  14   Top of Core Depth (m)  :   166.00
Sect:  4    Top of Section Depth(m):   170.50

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1A (0-20), 1B (20-25), 2 (26-35), 3 (36-50),
               4 (53-55), 5A (47-69), 5B (69-85), 5C (85-90),
               5D (90-100), 5E (100-120), 5F (120-134),
               5G (135-139);

  Texture    : MEDIUM GRAINED, HOMOGENEOUS, PHYRIC;

  Structure  : VERY RARE HAIRLINE FRACTURES LINED WITH GREEN
               SMECTITE, MASSIVE;

  Alteration : FRESH
               ALTERATION MINOR AND CONFINED TO GREEN SMECTITE IN
               VESICLES AND ALONG VERY RARE HAIRLINE FRACTURES
               AND IN GROUNDMASS;

  Comments   : GREY, CONTINUATION OF PREVIOUS SECTIONS;

  Vesicles   : Size(mm):       <1   Percent:    <2
               Location:            Filling: SMECTITE
               SPARSELY VESICULAR;

  Phenocrysts: PLAGIOCLASE               (   <2%)
               Size(mm):        <.5

  Replacement: SMECTITE
               GREEN SMECTITE RESTRICTED TO VESICLE AND
               GROUNDMASS AND FRACTURES;


Leg : 65    Top/Bottom Interval(mm):    0/ 470  Analyst: Zolotarev, B.
Hole: 482C  Sample Midpoint (m)    :   172.47
Core:  14   Top of Core Depth (m)  :   166.00
Sect:  5    Top of Section Depth(m):   172.00

LITHOLOGY: PLAG MOD PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-16), 2A (18-25), 2B (25-40), 2C (41-47);

  Texture    : PHYRIC, MEDIUM GRAINED;

  Structure  : MASSIVE;

  Alteration : FRESH
               CONSIDERABLY;

  Comments   : GREY, SAME AS 14-4;

  Vesicles   : Size(mm):            Percent:     0
               NONE OBVIOUS;

  Phenocrysts: PLAGIOCLASE               (  2-3%)
               Size(mm):        1-5


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482C  Sample Midpoint (m)    :   176.50
Core:  15   Top of Core Depth (m)  :   175.00
Sect:  1    Top of Section Depth(m):   175.00

LITHOLOGY: PLAG-AUGITE MOD PHYRIC BASALT;

  Piece No.  : PCES 1A (0-13), 1B (13-25), 2 (26-38), 3A (40-63),
               3B (64-69), 4 (70-77), 5 (80-106), 6A (107-112),
               6B (112-116), 6C (116-120), 7A (120-125),
               7B (125-129), 8A (130-135), 8B (135-139),
               9 (141-150);

  Texture    : PHYRIC, PCES 1-5 GLOMEROPHYRIC CLOTS MOSTLY PLAG
               WITH SMALL AMOUNT OF AUGITE, PCES 6A-C FINE GRAINED
               GLASSY TEXTURE(?=COOLING MARGIN), PCES 7-9 GRAIN
               SIZE INCREASES;

  Structure  : PCES 6A-C SOME HAIRLINE FRACTURES BUT NO APPARENT
               FILLING, SMECTITE VEIN IN PCE 9, PCE 18 FRACTURES
               COATED BY SMECTITE;

  Alteration : FRESH;

  Comments   : FRAGMENT "O"FOUND IN ARCHIVE HALF AND THEN AFTER
               SPLITTING WORKING HALF, PCES 6A-C ARE DARKER, PCES 7
               -9 POSSIBLY NEW COOLING UNIT-LITHOLOGY SAME AS UPPER
               SECTION;

  Phenocrysts: PLAGIOCLASE               ( 5-10%)
               Size(mm):  1-5SMECTI
               PCES 1-5 PHENOS 5-10%, PCES 6A-C ARE 5% AND PCE 8
               ALSO HAS SOME AUGITE PHENOS;

               AUGITE

  Replacement: SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482C  Sample Midpoint (m)    :   178.00
Core:  15   Top of Core Depth (m)  :   175.00
Sect:  2    Top of Section Depth(m):   176.50

LITHOLOGY: PLAG-AUGITE-OL MOD PHYRIC BASALT;

  Piece No.  : PCES 1 (0-8), 2 (11-18), 3 (21-30), 4 (30-40),
               5 (40-48), 6 (50-54), 7 (55-61), 8 (63-66),
               9 (76-70), 10 (75-81), 11 (83-88), 12 (90-103),
               13A (104-114), 13B (112-117), 14 (118-134),
               15 (125-135), 16 (135-144), 17 (145-150);

  Texture    : PHYRIC;

  Structure  : FRACTURES WITH MINOR SMECTITE COATING;

  Alteration : FRESH;

  Comments   : LITHOLOGY CONTINUED FROM CORE 15-1;

  Phenocrysts: PLAGIOCLASE               (    5%)

               CLINOPYROXENE             (    5%)

               OLIVINE
               MICROPHENOCRYSTS;


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482C  Sample Midpoint (m)    :   179.50
Core:  15   Top of Core Depth (m)  :   175.00
Sect:  3    Top of Section Depth(m):   178.00

LITHOLOGY: PLAG-CPX-OL MOD PHYRIC BASALT;

  Piece No.  : PCES 1 (0-6), 2 (8-19), 3 (20-34), 4 (36-49),
               5 (50-59), 6 (70-77), 7 (79-81), 8 (84-90),
               9 (90-101), 10 (104-115), 11 (116-120),
               12 (121-130), 13 (131-138), 14 (140-145),
               15 (147-150);

  Texture    : PHYRIC;

  Structure  : MINOR SMECTITE COATINGS ON JOINTS;

  Alteration : FRESH;

  Comments   : LITHOLOGY CONTINUED FROM CORE 15-2;

  Phenocrysts: PLAGIOCLASE               (    5%)
               PLAG(+OR- CPX) GLOMEROPHYRIC CLOTS;

               OLIVINE
               OL MICROPHENOS;

               CLINOPYROXENE

  Replacement: SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1450  Analyst: Flower, M.
Hole: 482C  Sample Midpoint (m)    :   180.95
Core:  15   Top of Core Depth (m)  :   175.00
Sect:  4    Top of Section Depth(m):   179.50

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;

  Piece No.  : PCES 1(0-2), 2 (3-9), 3 (10-13), 4 (15-21),
               5 (22-35), 6 (35-40), 7 (41-46), 8 (47-56),
               9 (58-63), 10 (65-83), 11 (84-90), 12 (92-100),
               13A (101-107), 13B (107-111), 14 (112-123),
               15 (124-133), 16 (135-145);

  Texture    : LESS PHYRIC(?) THAN 15-3;

  Structure  : PCE 4 FRACTURE, SMECTITE ON FRACTURE FACES AND
               CALCITE, CALCITE VEIN ON PCES 7-8,

  Alteration : FRESH;

  Comments   : LITHOLOGY CONTINUOUS FROM CORE 15-3 POSSIBLY;

  Phenocrysts: PLAGIOCLASE
               LAG GLOMEROCRYSTS WITH MINOR AUGITE IN CLOTS,

               OLIVINE
               RARE OL;

               AUGITE

  Replacement: SMECTITE

               CALCITE


    

Introduction


Cite as: Deep Sea Drilling Project (1989): Archive of Core and Site/Hole Data and Photographs from the Deep Sea Drilling Project (DSDP). National Geophysical Data Center, NOAA. doi:10.7289/V54M92G2 [access date]

These Web pages are from the Core Data from the Deep Sea Drilling Project Legs 1-96 CD-ROM produced in 1989 and modified in 2000 by the U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Geophysical Data Center (now part of the National Centers for Environmental Information), and collocated World Data Center for Marine Geology and Geophysics, Boulder (now part of the World Data Service for Geophysics). Data were compiled in cooperation with the U.S. Science Support Program, of the Joint Oceanographic Institutions, Inc. (now the Consortium for Ocean Leadership), and the U.S. National Science Foundation.

Please see NOAA's privacy and disclaimer information. Send questions or comments to mgg.info@noaa.gov.

Department of Commerce > NOAA > NESDIS > NCEI > doi:10.7289/V54M92G2