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Core Data from the Deep Sea Drilling Project


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Morrison, M. Ann
Hole: 482D  Sample Midpoint (m)    :   139.50
Core:   8   Top of Core Depth (m)  :   138.00
Sect:  1    Top of Section Depth(m):   138.00

LITHOLOGY: PLAG VERY SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-5), 2A (6-12), 2B (12-20), 3 (21-25),
               4A (28-32), 4B (32-44), 5 (46-49), 6 (51-60),
               7 (61-64), 8 (65-60), 9 (71-77), 10 (79-85),
               11 (86-97), 12 (101-115), 13 (116-123),
               14 (125-11), 15 (132-135), 16 (137-140),
               17 (141-150);

  Texture    : PCE 1 IS RUBBLE OF FINE-GRAINED BASALT, PCES 2-17
               ARE SPARSELY PHYRIC, GRAIN SIZE INCREASES DOWNWARDS
               BUT IN PCES 14-17 THERE IS A DECREASE IN GRAIN SIZE
               TO THE BOTTOM, NO SIGNS OF GLASS;

  Structure  : SMECTITE & CALCITE VEINS OFTEN WITH SULFIDES COMMON
               IN HAIRLINE CRACKS & IN ABUNDANCE DOWN THE SECTION,
               PCES 2-17 MASSIVE;

  Alteration : FRESH
               PCES 11 AND 14 HAVE VERY FAINT ALTERATION HALOS
               AROUND VEINS;

  Comments   : PCE 1 IS VERY SIMILAR TO PCES 2-17, NO BASALT-SED
               CONTACT SEEN ON ANY OF THE PCES;

  Vesicles   : Size(mm):            Percent:     1
               Location:            Filling: CALCITE,SULFIDES
               PCES 11 & 14 HAVE SMALL VESICLES;

  Phenocrysts: PLAGIOCLASE               (  <<1%)
               Size(mm):          1

  Replacement: CALCITE

               SMECTITE

               SULFIDES
               DISSEMINATED IN GROUNDMASS OF PCES(1-4,6,8,14);


Leg : 65    Top/Bottom Interval(mm):    0/ 300  Analyst: Kudo, A.
Hole: 482D  Sample Midpoint (m)    :   139.80
Core:   8   Top of Core Depth (m)  :   138.00
Sect:  2    Top of Section Depth(m):   139.50

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCES 1 (0-5), 2 (7-12), 3 (15-21), 4 (23-28);

  Texture    : APHYRIC, VARIABLE GRAIN SIZE(PCE 4 IS COARSEST), PCE
               2 MAY HAVE COOLING RIND WITH CALCITE AND SULFIDE ON
               OUTSIDE;

  Structure  : PCE 4 HAS VEINS OF CALCITE AND SULFIDE AND CLAY;

  Alteration : FRESH;

  Comments   : MAY BE ANOTHER COOLING UNIT, POSITION OF SAMPLE 1-4
               UNCERTAIN;

  Replacement: CLAY

               CALCITE

               SULFIDE


Leg : 65    Top/Bottom Interval(mm):    0/ 150  Analyst: Schmincke, H.
Hole: 482D  Sample Midpoint (m)    :   140.65
Core:   9   Top of Core Depth (m)  :   140.50
Sect:  1    Top of Section Depth(m):   140.50

LITHOLOGY: MUDSTONE;

  Piece No.  : PCE 1 (0-15);


Leg : 65    Top/Bottom Interval(mm):  150/1500  Analyst: Schmincke, H.
Hole: 482D  Sample Midpoint (m)    :   142.00
Core:   9   Top of Core Depth (m)  :   140.50
Sect:  1    Top of Section Depth(m):   140.65

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 2 (15-22), 3A (24-30), 3B (30-37), 3C (36-45),
               4 (45-59), 5 (60-70), 6 (70-80), 7 (82-89),
               8 (90-105), 9 (105-112), 10 (114-120),
               11 (121-127), 12 (127-140), 13 (142-150);

  Texture    : MEDIUM-GRAINED, PRACTICALLY APHYRIC, VESICLE
               FILLINGS ZONED;

  Structure  : MAJOR FRACTURES SUBVERTICAL-SOME SUBHORIZONTAL TO
               OBLIQUE, VEINS UP TO 2MM WIDE FILLED WITH UP TO 1CM
               CARBONATE CRYSTALS AND SULFIDE AND BLUISH SMECTITE
               AND PHILIPPSITE(?);

  Alteration : MODERATE
               PRONOUNCED ALTERATION HALOS ALONGSIDE FACTURES UP
               TO 2CM WIDE AND GRADING DIFFUSELY INTO FRESHER
               BASALT;

  Comments   : GREY;

  Vesicles   : Size(mm):     TO 1   Percent:  <1-2
               Location:            Filling: SMECTITE
               GREEN TO BROWN SMECTITE BECOMES SMALLER AND
               SCARCER AS GO DOWNWARDS;

  Phenocrysts: PLAGIOCLASE               (  <<1%)
               Size(mm):         <3
               VERY RARE PLA PHENOS;

  Replacement: SULFIDE
               IN GROUNDMASS IN ALTERATION HALOS;

               SMECTITE
               BLUISH TO GREEN TO BROWN, REPLACING GROUNDMASS;

               CARBONATE
               AS CRYSTALS OF CARBONATE;

               PHILLIPSITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Zolotarev, B.
Hole: 482D  Sample Midpoint (m)    :   143.50
Core:   9   Top of Core Depth (m)  :   140.50
Sect:  2    Top of Section Depth(m):   142.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1A (0-10), 1B (10-7), 1C (18-24), 1D (23-27),
               1E (28-31), 2 (33-39), 3 (40-43), 4 (45-48),
               5 (50-57), 6 (58-62), 7 (74-75), 8 (77-86),
               9 (87-95), 10 (96-100), 11 (101-110), 12 (111-114),
               1 (116-123), 14 (125-130), 15 (130-137),
               16 (140-145), 17 (145-150);

  Texture    : MOSTLY APHYRIC, FINELY GRAINED;

  Structure  : PCES(1,2,8,11-13) MOD FRACTURED AND FILLED WITH
               CARBONATE AND SMECTITE AND UNEVEN PYRITE, MASSIVE;

  Alteration : MOD;

  Comments   : GREY, ALL SAMPLES SAME COMPOSITION AND TEXTURE;

  Vesicles   : Size(mm):     TO 1   Percent:     1
               Location:            Filling: SMECTITE, CARB

               Location:            Filling: PYRITE
               VESICLES FILLED WITH WHITE AND GRAY GREENISH
               MATERIAL WHICH COULD BE CARB AND SMECTITE WITH
               PYRITE GRAINS INSIDE CARBONATE;

  Phenocrysts: PLAGIOCLASE               (  <<1%)
               Size(mm):      1.5-2
               DISTRIBUTION UNEVEN PCES(7,11,17), PHENOS VERY
               RARE;

  Replacement:

               SMECTITE

               PYRITE


Leg : 65    Top/Bottom Interval(mm):    0/1010  Analyst: Zolotarev, B.
Hole: 482D  Sample Midpoint (m)    :   144.51
Core:   9   Top of Core Depth (m)  :   140.50
Sect:  3    Top of Section Depth(m):   143.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-5), 2 (7-10), 3 (11-17), 4 (19-27),
               5 (27-32), 6 (33-38), 7 (40-47), 8 (48-51),
               9 (58-61), 10 (63-67), 11 (70-76), 12 (77-82),
               13 (83-87), 14 (88-93), 15 (95-101);

  Texture    : APHYRIC;

  Structure  : MASSIVE, SOME FRACTURE FILLED WITH CARB AND SMECTITE
               AND UNEVEN PYRITE;

  Alteration : SLIGHT TO MODERATE;

  Comments   : SAME AS 9-2, GREY;

  Vesicles   : Size(mm):    0.5-1   Percent:    <1
               Location:            Filling: SMECTITE,CARB
               SPARSELY VESICULAR;

  Phenocrysts: PLAGIOCLASE
               Size(mm):          1
               VERY RARE MICROPHENOS;

  Replacement: CARBONATE

               PYRITE

               SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1450  Analyst: Flower, M.
Hole: 482D  Sample Midpoint (m)    :   151.95
Core:  10   Top of Core Depth (m)  :   150.50
Sect:  1    Top of Section Depth(m):   150.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-6), 2 (8-12), 3 (14-18), 4 (20-25),
               5 (26-27), 6 (31-35), 7 (36-43), 8 (45-53),
               9 (54-68), 10A (70-75), 10B (74-80), 10C (80-87),
               10D (88-92), 11 (94-110), 12 (111-117),
               13 (119-127), 14 (28-132), 15A (134-140),
               15B (138-145);

  Texture    : APHYRIC, FRAGMENTATION OF CORE;

  Structure  : MASSIVE, FEW CALCITE FILLED HAIRLINE FRACTURES, PCES
               10D-13 SHOW FACES OF THICKER VEINS CONTAINING
               CALCITE AND GREEN SMECTITE AND MOSTLY DISSEMINATED
               SULFIDE;

  Alteration : FRESH
               MOSTLY;

  Comments   : LITHOLOGY CONTINUED FROM 9-3, GREY;

  Vesicles   : Size(mm):            Percent:     0

  Replacement: SULFIDE
               DISSEMINAED MOSTLY;

               CALCITE

               SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Flower, M.
Hole: 482D  Sample Midpoint (m)    :   153.50
Core:  10   Top of Core Depth (m)  :   150.50
Sect:  2    Top of Section Depth(m):   152.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-5), 2 (6-14), 3 (15-29), 4 (30-35),
               5A (37-40), 5B (41-51), 5C (51-54), 5D (55-89),
               5E (90-93), 5F (93-97), 6 (98-100), 7 (102-105),
               8 (106-115), 9 9117-122), 10A (124-132),
               10B (132-138), 11 (139-142), 12 (145-150);

  Texture    : APHYRIC, MOTTLED APPEARANCE OF SOME PCES MAY BE
               GROUDMASS, TRANSITION  GLOMERHYRIC BASALT SEEMS
               GRADATIONAL;

  Structure  : SMECTITE AND CALCITE VEINS IN PCE 10A, MASSIVE;

  Alteration : FRESH;

  Comments   : LITHOLOGY CONTINUOUS FROM PREVIOUS CORE 10-1;

  Phenocrysts: COMBINATION
               INCLUDES PLAG(+OR- CPX) GLOMEROPYRIC CLOTS WITH
               LARGER AND MORE ABUNDANT CLOTS IN PCE 10;

  Replacement: SMECTITE

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/ 600  Analyst: Flower, M.
Hole: 482D  Sample Midpoint (m)    :   154.10
Core:  10   Top of Core Depth (m)  :   150.50
Sect:  3    Top of Section Depth(m):   153.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-3), 2A (5-9), 2B (10-17), 2C (18-20),
               3 (22-30), 4 (31-40), 5 (42-50), 6 (50-60);

  Texture    : APHYRIC, INCREASING GRAIN SIZE, PCE 6 SHOWS DISTINCT
               COOLING MARGIN AND GLASSY RIND;

  Structure  : ALTERED CRACKS SHOWING SMECTITE AND CALCITE AND
               SULFIDE, PCES 3-4 SHOW FAINT ALTERATION ALONG
               FRACTURE SURFACES, MASSIVE;

  Alteration : FRESH
               PCES 3-4 SHOW FAINT ALTERATION;

  Comments   : LITHOLOGY CONTINUOUS FROM CORE 10-2;

  Phenocrysts: PLAGIOCLASE

               CLINOPYROXENE
               GLOMEROCRYSTIC CLOTS OF PLAG-AUGITE IN PCES 9-12,

  Replacement: CALCITE

               SULFIDE

               SMECTITE


Leg : 65    Top/Bottom Interval(mm):  600/ 650  Analyst: Flower, M.
Hole: 482D  Sample Midpoint (m)    :   154.15
Core:  10   Top of Core Depth (m)  :   150.50
Sect:  3    Top of Section Depth(m):   154.10

LITHOLOGY: SEDIMENT;

  Piece No.  : PC 7 (60-65);

  Texture    : INDURATED;


Leg : 65    Top/Bottom Interval(mm):  650/ 720  Analyst: Flower, M.
Hole: 482D  Sample Midpoint (m)    :   154.22
Core:  10   Top of Core Depth (m)  :   150.50
Sect:  3    Top of Section Depth(m):   154.15

LITHOLOGY: GLASSY BASALT;

  Piece No.  : PCE 8 (65-72);

  Texture    : GLASSY COOLING MARGIN IN DISSEMINATED SULFIDE;

  Alteration : FRESH;


Leg : 65    Top/Bottom Interval(mm):  730/1500  Analyst: Flower, M.
Hole: 482D  Sample Midpoint (m)    :   155.00
Core:  10   Top of Core Depth (m)  :   150.50
Sect:  3    Top of Section Depth(m):   154.23

LITHOLOGY: APHYRIC TO PLAG-CPX SPARSELY PHYRIC BASALT;

  Piece No.  : PCES 9 (73-80), 10 (81-86), 11 (87-93), 12 (94-96),
               13 (98-105), 14 (106-115), 15 (111-120),
               16 (123-127), 17 (130-134), 18 (135-139),
               19 (145-148);

  Texture    : PCES 9-12 GLOMEROPHYRICCLOTS OF PLAG-AUGITE,
               APHYRIC TO SPARSELY PHYRIC, FINE GRAINED BUT
               INCREASINGLY COARSER, PCE 17 GLASSY RIND;

  Alteration : FRESH;

  Phenocrysts: PLAGIOCLASE

               OLIVINE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Kudo, A.
Hole: 482D  Sample Midpoint (m)    :   161.00
Core:  11   Top of Core Depth (m)  :   159.50
Sect:  1    Top of Section Depth(m):   159.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (0-7), 2 (10-13), 3 (25-32), 4A (35-45),
               4B (38-45), 5 (46-57), 6 (60-68), 7 (71-75),
               8A (77-80), 8B (81-84), 9 (86-92), 10 (94-105),
               11A (108-111), 11B (111-120), 12 (121-123),
               13A (25-135), 13B (134-140), 14 (140-150);

  Texture    : APHYRIC, SEVERAL GLASSY MARGINS AND QUENCH ZONES(SEE
               PCE 3 1CM THICK AND 7 NICE QUENCH PILLOW??), PCE 1
               IS COARSEST-GRAINED;

  Structure  : VEINS OF CALCITE AND SMECTITE AND SULFIDE COMMON,
               MASSIVE;

  Alteration : FRESH;

  Comments   : GREY, MAY HAVE TWO UNITS IN THIS SECTION;

  Phenocrysts: MOTTLED WITH GLOMEROCRYSTIC CLOTS OF PLAG AND PYX;

  Replacement: CALCITE

               SMECTITE

               SULFIDE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Morrison, M. Ann
Hole: 482D  Sample Midpoint (m)    :   162.50
Core:  11   Top of Core Depth (m)  :   159.50
Sect:  2    Top of Section Depth(m):   161.00

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCES 1A (0-6), 1B (5-7), 1C (8-12), 2 (13-20),
               3 (22-30), 4 (32-42), 5A (44-54), 5B (50-55),
               5C (55-60), 5D (60-68), 5E (69-75), 6A (76-80),
               6B (81-85), 7A (87-94), 7B (92-98), 8 (100-108),
               9 (110-117), 10 (119-130), 11 (131-141),
               12 (142-150);

  Texture    : PCES 1-3 ARE FINE-GRAINED, APHYRIC, PCES 4-12
               ARE APHYRIC, PCE 4 HAS A GLASSY RIND AND IS FINE-
               GRAINED WITH INCREASING GRAIN SIZE IN PCE 5 AND REST
               ARE FAIRLY UNIFORM;

  Structure  : PCES 4-12 HAVE THIN SMEC COATED VEINS & FRACTURES
               PCES(5D,6A,11) ALSO HAVE CALCITE ALONG VEINS;

  Alteration : FRESH;

  Comments   : GREY, SIMILAR TO PREVIOUS UNITS;

  Vesicles   : Size(mm):            Percent:     0

  Replacement: SMECTITE

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/1280  Analyst: Kudo, A.
Hole: 482D  Sample Midpoint (m)    :   163.78
Core:  11   Top of Core Depth (m)  :   159.50
Sect:  3    Top of Section Depth(m):   162.50

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCES 1 (0-10), 2 (12-16), 3A (18-23), 3B (25-310,
               4 (33-55), 5 (57-63), 6 (65-71), 7 (74-84),
               8 (85-90), 9 (91-97), 10 (98-105), 11 (106-128);

  Texture    : APHANITIC, PCES(3A-3B) HAVE THICK (0.5-0.8CM) GLASS
               AT CONTACT;

  Structure  : VEINS OF CALCITE AND SMECTITE;

  Alteration : FRESH;

  Comments   : SIMILAR TO 11-1, GREY, MAY HAVE TWO COOLING UNITS IN
               SECTION;

  Replacement: SMECTITE

               CALCITE


Leg : 65    Top/Bottom Interval(mm):    0/1300  Analyst: Schmincke, H.
Hole: 482D  Sample Midpoint (m)    :   169.80
Core:  12   Top of Core Depth (m)  :   168.50
Sect:  1    Top of Section Depth(m):   168.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (16), 2A (8-16), 2B (16-22), 3 (24-33),
               4 (34-41), 5 (44-50), 6 (51-60), 7 (60-70),
               8 (72-80), 9 (80-90), 10 (90-97), 11 (99-104),
               12A (110-116), 12B (116-125), 13 (126-130);

  Texture    : FINE TO MEDIUM-GRAINED, APHYRIC, GRAIN SIZE
               DECREASES IN PCE 12B AND 13;

  Structure  : FRACTURES MOSTLY SUBHORIZONTAL SOME INCLINED IN PCES
               4 & 10 WIH RARE VEINS AND FILLINGS OF SMECTITE AND
               CARB & ZEOL(?) & MINOR SILVERY SULFIDE, MASSIVE;

  Alteration : FRESH;

  Comments   : GREY;

  Vesicles   : Size(mm):       <1   Percent:    <1
               Location:            Filling: SMECTITE
               VERY SPARSELY VESICULAR, GREEN SMECTITE;

  Phenocrysts: PLAGIOCLASE               (   <1%)
               VERY RARE MICROPHENOS;

  Replacement: SMECTITE

               CARBONATE

               ZEOLITE
               ID ZEOLITE UNCERTAIN;

               SULFIDE


Leg : 65    Top/Bottom Interval(mm): 1300/1450  Analyst: Schmincke, H.
Hole: 482D  Sample Midpoint (m)    :   169.95
Core:  12   Top of Core Depth (m)  :   168.50
Sect:  1    Top of Section Depth(m):   169.80

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 14A (132-138), 14B (137-145);

  Texture    : PHYRIC, FINE-GRAINED;

  Structure  : MOSTLY SUBHORIZONTAL WITH SOME INCLINED FRACTURES,
               RARE VEINS FILLED WITH SMECTITE AND CARBONATE AND
               ZEOLITE(?) AND MINOR PALE SILVERY SULFIDE, MASSIVE;

  Alteration : FRESH;

  Comments   : DARK, NEW COOLING UNIT AND PETROGRAPHIC TYPE;

  Phenocrysts: PLAGIOCLASE               (  1  %)
               Size(mm):      <4

  Replacement: SMECTITE

               CARBONATE

               ZEOLITE
               ID ZEOLITE UNCERTAIN;

               SULFIDE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Schmincke, H.
Hole: 482D  Sample Midpoint (m)    :   171.50
Core:  12   Top of Core Depth (m)  :   168.50
Sect:  2    Top of Section Depth(m):   170.00

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (1-7), 2 (10-19), 3 (21-30), 4 (32-37),
               5 (40-45), 6 (47-66), 7 (68-72), 8 (65-71),
               9 (73-78), 10 (80-95), 11 (95-110), 11B (111-121),
               12 (123-135), 13 (136-148);

  Texture    : FINE-GRAINED(PCES1-9) TO MEDIUM-GRAINED (PCES10-13),
               PHYRIC, PCE 8 IS GLASSY RIND OF COOLING UNIT;

  Structure  : SOME THIN VEINS FILLED WITH SMECTITE AND CARBONATE
               AND SULFIDE(PCE 5 MAYBE MARCASITE?), SUBVERTICAL AND
               MOSTLY SUBHORIZONTAL FRACTURES;

  Alteration : FRESH;

  Comments   : GREY, CONTINUATION FROM BASE OF 12-1;

  Vesicles   : Size(mm):       <1   Percent:    <1
               Location:            Filling: SMECTITE
               PCE 13 IS EXAMPLE OF IRREGULAR SHAPE FILLED WITH
               GREEN SMECTITE;

  Phenocrysts: PLAGIOCLASE               (  1-2%)
               Size(mm):         <4

  Replacement: SMECTITE

               SULFIDE
               SULFIDE MAYBE MARCASITE;

               CARBONATE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Zolotarev, B.
Hole: 482D  Sample Midpoint (m)    :   173.00
Core:  12   Top of Core Depth (m)  :   168.50
Sect:  3    Top of Section Depth(m):   171.50

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
           MASSIVE;

  Piece No.  : PCES 1 (1-10), 2 (13-17), 3 (20-37), 4A (27-32),
               4B (34-41), 5 (43-50), 6 (51-56), 7 (58-66),
               8 (68-77), 9A (79-90), 9B (90-98), 10 (101-114),
               11 (116-125), 12 (127-135), 13 (137-142),
               14 (145-147);

  Texture    : PHYRIC, FINE-GRAINED, ALL SAMPLES SIMILAR TEXTURE;

  Structure  : MASSIVE, THIN FRACTURES EXCEPT PCES 4A-4B UP TO
               3-4MM FILLED WITH WHITE-GREY MATERIAL AND WALLS
               COVERED WITH DARK-GREY & REDDISH-GREY MATERIAL AND
               RARE PYRITE IN FRACTURES;

  Alteration : MODERATE;

  Comments   : GREY;

  Vesicles   : Size(mm): TO 1-1.5   Percent:   1-2
               Location:            Filling: SMEC,CARB
               DARK GREY AND WHITE-BLUE GREY MATERIAL MAY BE
               CARBONATE AND SMECTITE;

  Phenocrysts: PLAGIOCLASE               (    1%)
               Size(mm):      1.5-3
               UNEVENLY DISTRIBUTED;

  Replacement: CARBONATE

               SMECTITE

               PYRITE


Leg : 65    Top/Bottom Interval(mm):    0/ 870  Analyst: Zolotarev, B.
Hole: 482D  Sample Midpoint (m)    :   173.87
Core:  12   Top of Core Depth (m)  :   168.50
Sect:  4    Top of Section Depth(m):   173.00

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;

  Piece No.  : PCES 1 (1-9), 2 (12-17), 3A (19-26), 3B (26-36),
               4A (48-51), 4B (50-57), 5 (60-66), 6 (58-73),
               7 (75-78), 8 (80-87);

  Texture    : FINE-GRAINED, PHYRIC;

  Structure  : MOD TO STRONGLY FRACTURED FILLED WITH WHITE AND GREY
               GREENISH MATERIAL PROBABLY SMECTITE AND CARBONATE
               AND ZEOLITE(?);

  Alteration : MODERATE
               STRONG AROUND FRACTURES;

  Comments   : GREY, YELLOW COATING ON PCES 5-8;

  Vesicles   : Size(mm): TO 1-1.5   Percent:   1-2
               Location:            Filling: SMEC,CARB
               IRREGULAR DISTRIBUTION, FILLED WITH WHITE AND DARK
               GREY MATERIAL PROBABLY CARB ND SMECTITE, SULFIDE
               IN BANDS OF IRREULAR 1-5MM VESICLES ON TOP OF 3B;

  Phenocrysts: PLAGIOCLASE               (    1%)
               Size(mm):        TO4

  Replacement: CARBONATE

               SULFIDE

               SMECTITE

               ZEOLITE
               ID ZEOLITE UNCERTAIN;


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Schmincke, H.
Hole: 482D  Sample Midpoint (m)    :   179.00
Core:  13   Top of Core Depth (m)  :   177.50
Sect:  1    Top of Section Depth(m):   177.50

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;

  Piece No.  : PCES 1 (1-7), 2 (8-11), 3 (17-24), 4 (25-30),
               5 (30-40), 6 (41-45), 7 (47-52), 8 (57-70),
               9 (72-75), 10 (76-83), 11 (84-92), 12 (94-98),
               13 (100-106), 14 (107-120), 15 (121-135),
               16 (136-150);

  Texture    : FINE TO PARTLY MEDIUM-GRAINED, PHYRIC, FOUR MAIN
               COOLING UNITS PCE 1 AND 2(GLASSY MARGIN) THRU 6 AND
               7 IS VERY FINE-GRAINED TOP TO COARSENING DOWNWARDS
               THRU 15 WITH EXCELLENT DECREASE IN GRAIN SIZE TO
               VERY FINE-GRAINED BASE;

  Structure  : FRACTURES MORE IRREGULAR THAN IN MORE MASSIVE
               OVERLYING UNITS, FEW 1MM VEINS OF ZEOLITE(?) OR
               SMECTITE OR RARE CARBONATE OR SULFIDE(PCE11);

  Alteration : FRESH;

  Comments   : SAME PETROGRAPHIC TYPE AS 12-1 TO 12-4, GREY;

  Vesicles   : Size(mm):            Percent:    <1
               Location:            Filling: SMECTITE
               MORE IRREGULAR THAN IN MASSIVE BASALTS, FILLED
               WITH GREEN SMECTITE;

  Phenocrysts: PLAGIOCLASE               (   <1%)
               Size(mm):         <4

  Replacement: CARBONATE
               RARE;

               SMECTITE

               ZEOLITE
               ID ZEOLITE UNCERTAIN;

               SULFIDE


Leg : 65    Top/Bottom Interval(mm):    0/1500  Analyst: Zolotarev, B.
Hole: 482D  Sample Midpoint (m)    :   180.50
Core:  13   Top of Core Depth (m)  :   177.50
Sect:  2    Top of Section Depth(m):   179.00

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;

  Piece No.  : PCES 1 (1-5), 2 (7-15), 3 (17-26), 4 (29-35),
               5 (39-42), 6 (44-50), 7 (54-66), 8 (70-78),
               9 (81-87), 10 (90-105), 11 (108-117), 12 (120-128),
               13 (130-149);

  Texture    : PHYRIC, MEDIUM-GRAINED EXCEPT PCE 13 IS VERY FINE-
               GRAINED TO FINE-GRAINED AND PCE 1 IS FINE-GRAINED;

  Structure  : STRONGLY FRACTURED AND FILLED WITH CARBONATE AND
               AND SMECTITE AND PYRITE (RARE);

  Alteration : MOD TO STRONG;

  Comments   : PCE 13 IS GREY AND FINER-GRAINED-NEW COOLING UNIT;

  Vesicles   : Size(mm):       TO   Percent: 1  <1
               Location:            Filling: SMECTITE
               RARE AND FILLED WITH GREY MATERIAL(SMECTITE);

  Phenocrysts: PLAGIOCLASE               (  1-2%)
               Size(mm):       TO 4

  Replacement: CARBONATE

               PYRITE

               SMECTITE


Leg : 65    Top/Bottom Interval(mm):    0/ 370  Analyst: Zolotarev, B.
Hole: 482D  Sample Midpoint (m)    :   180.87
Core:  13   Top of Core Depth (m)  :   177.50
Sect:  3    Top of Section Depth(m):   180.50

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;

  Piece No.  : PCES 1 (1-10), 2 (12-21), 3 (25-36);

  Texture    : FINE-GRAINED, PHYRIC;

  Structure  : FRACTURES THIN AND FILLED WITH SMECTITE;

  Alteration : MODERATE;

  Comments   : GREY;

  Vesicles   :
               Location:            Filling: SMECTITE
               VESICLES VERY RARE AND SMALL AND FILLED WITH SMEC;

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

  Replacement: SMECTITE


    

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.

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