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Core Data from the Deep Sea Drilling Project


Leg : 74    Top/Bottom Interval(mm):    0/1430  Analyst: Borella, P.E.
Hole: 527   Sample Midpoint (m)    :   340.03
Core:  38   Top of Core Depth (m)  :   332.00
Sect: CC    Top of Section Depth(m):   338.70

LITHOLOGY: SEDIMENT;


Leg : 74    Top/Bottom Interval(mm): 1430/1480  Analyst: Borella, P.E.
Hole: 527   Sample Midpoint (m)    :   340.08
Core:  38   Top of Core Depth (m)  :   332.00
Sect: CC    Top of Section Depth(m):   340.03

LITHOLOGY: BASALTIC RUBBLE;

  Piece No.  : PCE 1 (143-148);

  Texture    : APHANITIC MARGIN SUGGESTIVE OF A GLASSY TEXTURE;

  Comments   : PCE 1 BEGINS UNIT 1;


Leg : 74    Top/Bottom Interval(mm):    0/1450  Analyst: Borella, P.E.
Hole: 527   Sample Midpoint (m)    :   342.95
Core:  39   Top of Core Depth (m)  :   341.50
Sect:  1    Top of Section Depth(m):   341.50

LITHOLOGY: PLAG-OL-CPX SPARSELY TO MOD PHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (1-17), 1B (15-36), 1C (35-60), 1D (59-70),
               1E (70-77), 1F (74-80), 1G (78-120), 1H (116-134),
               1I (133-145);

  Texture    : SPARSELY TO MOD PHYRIC,FINE-GRAINED,NO GLASSY RIMS;

  Structure  : MASSIVE BASALT,SMEC VEINS(?) ON PCES 1C+1E;

  Alteration : MOD

  Comments   : CONTINUATION OF UNIT 1,MEDIUM GRAY BASALT;

  Phenocrysts: PLAGIOCLASE
               MOSTLY LARGE PHENOS WHICH ARE SUBROUNDED(LACKS
               GOOD XTL SHAPE) & SOME ALSO HAVE INCLUDED
               FRAGMENTS;

               OLIVINE

               CLINOPYROXENE

  Replacement: SMECTITE
               ID SMEC VEINS UNCERTAIN IN PCES 1C+1E;


Leg : 74    Top/Bottom Interval(mm):    0/1500  Analyst: Borella, P.E.
Hole: 527   Sample Midpoint (m)    :   344.50
Core:  39   Top of Core Depth (m)  :   341.50
Sect:  2    Top of Section Depth(m):   343.00

LITHOLOGY: PLAG-OL-CPX SPARSELY TO MOD PHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (0-7), 1B (7-25), 1C (25-34), 1D (35-41),
               1E (42-73), 1F (73-90), 1G (90-147);

  Texture    : SPARSELY TO MOD PHYRIC,NO GLASSY MARGINS,FINE-
               GRAINED;

  Structure  : MASSIVE BASALT,PCE 1B HAS SMEC & PYR VEIN,PCE 1D HAS
               CALCITE VEIN,VEINS WITH UNKNOWN FILLING IN PCES
               1A+1G;

  Alteration : MOD

  Comments   : CONTINUATION OF UNIT 1;

  Phenocrysts: PLAGIOCLASE

               OLIVINE

               CLINOPYROXENE

  Replacement: SMECTITE


               CALCITE

               UNIDENTIFIED
               REPLACEMENT MINERALS ARE FOUND IN VEINS;


Leg : 74    Top/Bottom Interval(mm):    0/1400  Analyst: O'Connell, S.
Hole: 527   Sample Midpoint (m)    :   345.90
Core:  39   Top of Core Depth (m)  :   341.50
Sect:  3    Top of Section Depth(m):   344.50

LITHOLOGY: PLAG-OL-CPX SPARSELY TO MOD PHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (1-2), 1B (1-2), 1C (2-41), 1D (41-48),
               1E (45-48), 1F (48-53), 1G (53-84), 1H (84-87),
               1I (88-107), 1J (107-116), 1K (116-140);

  Texture    : SPARSELY TO MOD PHYRIC,NO GLASS OBSERVED;

  Structure  : MASSIVE BASALT,THIN VEIN IN PCE 1I;

  Alteration : MOD
               ALTERATION VEIN IN PCE 1I;

  Comments   : CONTINUATION OF UNIT 1,MEDIUM GRAY BASALT;

  Phenocrysts: PLAGIOCLASE
               Size(mm):       TO 5

               OLIVINE

               CLINOPYROXENE
               OL GRAINS ARE DARK GREEN & SUB-TO-ANHEDRAL,SOME OL
               ENCLOSED BY LARGE PLAG GRAINS(?),SOME PLAG ARE TO
               5MM LONG & ARE LATH-LIKE,OTHER PLAG ARE ROUNDED &
               THEREFORE THEIR ID AS PLAG IS QUESTIONABLE;


Leg : 74    Top/Bottom Interval(mm):    0/ 550  Analyst: O'Connell, S.
Hole: 527   Sample Midpoint (m)    :   346.55
Core:  39   Top of Core Depth (m)  :   341.50
Sect:  4    Top of Section Depth(m):   346.00

LITHOLOGY: PLAG-OL-CPX SPARSELY TO MOD PHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (1-10), 1B (10-20), 1C (21-28), 1D (28-42),
               1E (43-53);

  Texture    : SPARSELY TO MOD PHYRIC,NO GLASS;

  Structure  : MASSIVE BASALT;

  Alteration : MOD

  Comments   : MEDIUM GRAY BASALT,PCE 1E ENDS UNIT 1;

  Phenocrysts: PLAGIOCLASE

               OLIVINE

               CLINOPYROXENE


Leg : 74    Top/Bottom Interval(mm):    0/1400  Analyst: Borella, P.E.
Hole: 527   Sample Midpoint (m)    :   347.90
Core:  40   Top of Core Depth (m)  :   346.50
Sect:  1    Top of Section Depth(m):   346.50

LITHOLOGY: PLAG-OL-CPX SPARSELY PHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1 (0-8), 2 (12-17), 3A (21-40), 3B (41-52),
               3C (52-63), 3D (63-72), 3E (72-81), 3F (81-95),
               3G (95-110), 3H (110-121), 3I (122-133),
               3J (134-136);

  Texture    : SPARSELY PHYRIC,PCE 1A HAS GLASS RIND & COMPRISES A
               COOLING UNIT CHILLED MARGIN,BOTTOM OF PCE 3I IS VERY
               FINE-GRAINED & REPRESENTS LOWER CHILLED MARGIN OF
               THE COOLING UNIT,FINE-GRAINED;

  Structure  : MASSIVE BASALT,FRACTURED NON-CALCAREOUS VEIN IS
               PRESENT IN PCES 3B-3D(ZEOL?);

  Alteration : MOD

  Comments   : ENTIRE SECTION COMPRISES UNIT 2,MEDIUM GRAY BASALT;


Leg : 74    Top/Bottom Interval(mm):   40/  60  Analyst: O'Connell, S.
Hole: 527   Sample Midpoint (m)    :   348.06
Core:  40   Top of Core Depth (m)  :   346.50
Sect:  2    Top of Section Depth(m):   348.04

LITHOLOGY: SEDIMENT;
           LIMESTONE;


Leg : 74    Top/Bottom Interval(mm):   80/1420  Analyst: O'Connell, S.
Hole: 527   Sample Midpoint (m)    :   349.42
Core:  40   Top of Core Depth (m)  :   346.50
Sect:  2    Top of Section Depth(m):   348.08

LITHOLOGY: PLAG-OL-CPX SPARSELY PHYRIC BASALT;

  Piece No.  : PCES 1A (8-13), 1B (14-21), 1C (21-30), 1D (30-36),
               1E (36-44), 1F (45-84), 1G (85-96), 1H (96-105),
               1I (105-142);

  Texture    : SPARSELY PHYRIC,PCE 1A IS VERY FINE-GRAINED
               PARTICULARLY AT THE TOP,PCES 1B-1C ARE FINER-GRAINED
               THAN UNDERLYING BASALT;

  Alteration : EXT
               PCES 1A-1C HAVE BEEN ALTERED TO A GREEN SMEC-LIKE
               SUBSTANCE;
               MOD
               PCES 1D-1I;

  Comments   : PCE 1A BEGINS UNIT 3,PCES 1A-1C GREEN,PCES 1D-1I ARE
               MEDIUM-GRAY BASALT;

  Vesicles   : LARGE ALTERED VESICLES;

  Phenocrysts: PLAGIOCLASE

               OLIVINE

               CLINOPYROXENE
               Size(mm):      TO 20
               LARGE PLAG PHENOS,OL PRESENT IN MATRIX & IN PLAG
               PHENOS;

  Replacement:
               SMALL PCES OF PYR OCCUR IN ALTERED AREAS OF
               PCE 1A;

               SMECTITE
               PCES 1A-1C ALTERED TO GREEN SMEC-LIKE MATERIAL;


Leg : 74    Top/Bottom Interval(mm):    0/1500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   352.00
Core:  41   Top of Core Depth (m)  :   350.50
Sect:  1    Top of Section Depth(m):   350.50

LITHOLOGY: PLAG-CPX-OL SPARSELY PHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (1-32), 1B (31-41), 1C (42-48), 1D (48-96),
               1E (90-96), 1F (97-107), 1G (107-115), 1H (115-122),
               1I (122-139), 1J (138-147),1K (145-150);

  Texture    : SPARSELY PHYRIC,NO APPARENT CHILLED MARGINS;

  Structure  : MASSIVE BASALT,THIN 1MM DARK GREEN SMEC-FILLED VEINS
               IN PCES 1F-1I;

  Alteration : MOD
               SOME ADJACENT BASALT GNDMASS SHOWS ALTERATION TO
               GREEN CLAY.MIN;

  Comments   : MEDIUM GRAY BASALT,CONTINUATION OF UNIT 3;

  Vesicles   : Size(mm):      1-2   Percent:
               Location:            Filling: CLAY.MIN
               VERY SPARSE SCATTERED VESICLES FILLED WITH OLIVE
               GREEN CLAY.MIN;

  Phenocrysts: PLAGIOCLASE
               Size(mm):       2-20
               STUBBY LATHS;

               OLIVINE
               Size(mm):       TO 2
               SPARSE OL GENERALLY REPLACED BY GREEN CLAY.MIN;

  Replacement: CLAY MINERALS
               Minerals Replaced: OL
               GREEN CLAY.MIN GENERALLY REPLACING OL;

               SMECTITE
               DARK GREEN SMEC FILLS VEINS IN PCES 1F-1I;


Leg : 74    Top/Bottom Interval(mm):    0/1400  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   353.40
Core:  41   Top of Core Depth (m)  :   350.50
Sect:  2    Top of Section Depth(m):   352.00

LITHOLOGY: PLAG-CPX-OL PHYRIC BASALT;

  Piece No.  : PCES 1A (1-12), 1B (12-20), 1C (20-27), 1D (26-45),
               1E (44-57), 1F (56-68), 1G (67-75), 1H (75-84),
               1I (84-90), 1J (91-99), 1K (98-103), 1L (104-113),
               1M (113-121), 1N (121-132),1O (132-140);

  Texture    : PHYRIC,MEDIUM-GRAINED,IDENTICAL TO CORE 41-1;

  Alteration : MOD

  Comments   : MEDIUM-GRAY BASALT,CONTINUATION OF UNIT 3;

  Phenocrysts: PLAGIOCLASE

               CLINOPYROXENE

               OLIVINE


Leg : 74    Top/Bottom Interval(mm):    0/1400  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   354.90
Core:  41   Top of Core Depth (m)  :   350.50
Sect:  3    Top of Section Depth(m):   353.50

LITHOLOGY: PLAG-CPX-OL PHYRIC BASALT;

  Piece No.  : PCES 1A (0-17), 1B (17-32), 1C (32-50), 1D (50-62),
               1E (63-71), 1F (71-77), 1G (77-84), 1H (84-88),
               1I (87-100), 1J (100-106), 1K (106-117),
               1L (117-123), 1M (125-137);

  Texture    : PHYRIC,MEDIUM-GRAINED,ESSENTIALLY SAME AS CORES 41-1
               & 41-2;

  Alteration : MOD

  Comments   : MEDIUM GRAY BASALT,CONTINUATION OF UNIT 3;

  Phenocrysts: PLAGIOCLASE

               CLINOPYROXENE

               OLIVINE
               PERHAPS GRADUAL INCREASE IN OL MICROPHENO
               ABUNDANCE;


Leg : 74    Top/Bottom Interval(mm):    0/1350  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   356.35
Core:  41   Top of Core Depth (m)  :   350.50
Sect:  4    Top of Section Depth(m):   355.00

LITHOLOGY: PLAG-CPX-OL PHYRIC BASALT;

  Piece No.  : PCES 1A (1-31), 1B (31-42), 1C (42-49), 1D (50-59),
               1E (60-90), 1F (90-100), 1G (100-110),
               1H (110-125), 1I (126-130);

  Texture    : PHYRIC,MEDIUM-GRAINED;

  Structure  : PCES 1B-1F TRAVERSED BY CARB.UNSPEC VEIN LINED WITH
               GREEN CLAY.MIN;

  Alteration : MOD
               ASSOCIATED PALE BROWN OXIDATION HALO OBSERVED IN
               SURROUNDING BASALT GNDMASS;

  Comments   : PCE 1I ENDS UNIT 3,UNIT 3 IS PERHAPS A SINGLE
               COOLING UNIT;

  Phenocrysts: PLAGIOCLASE

               OLIVINE

               CLINOPYROXENE
               VERY SPARSE OL MICROPHENOS;

  Replacement: CARBONATE
               CARB.UNSPEC VEIN TRAVERSES PCES 1B-1F;

               CLAY MINERALS
               GREEN CLAY.MIN LINES CARB.UNSPEC VEIN IN PCES
               1B-1F;


Leg : 74    Top/Bottom Interval(mm):    0/ 570  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   357.07
Core:  41   Top of Core Depth (m)  :   350.50
Sect:  5    Top of Section Depth(m):   356.50

LITHOLOGY: SEDIMENT;


Leg : 74    Top/Bottom Interval(mm):  570/1050  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   357.55
Core:  41   Top of Core Depth (m)  :   350.50
Sect:  5    Top of Section Depth(m):   357.07

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;

  Piece No.  : PCES 1A (57-62), 1B (63-66), 1C (67-73), 2A (75-84),
               2B (75-79), 2C (79-84), 3A (87-91), 3B (87-93),
               4A (95-105), 4B (100-105);

  Texture    : PHYRIC,FINE-GRAINED,PCE 1A IS A CHILLED FLOW OR
               PILLOW MARGIN WITH ALT.GLAS RIND;

  Alteration : MOD TO EXT
               PCES 1A-1C,PCE 1A HAS GLASS RIND ALTERED TO PALE
               GREEN PALAG & CLAY.MIN;

  Comments   : PCE 1A BEGINS UNIT 4,MEDIUM GRAY BASALT;

  Phenocrysts: PLAGIOCLASE

  Replacement: PALAGONITE
               Minerals Replaced: GLASS

               CLAY MINERALS
               Minerals Replaced: GLASS
               PCE 1A GLASSY MARGIN ALTERED TO PALE GREEN PALAG &
               CLAY.MIN;


Leg : 74    Top/Bottom Interval(mm):    0/  70  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   359.57
Core:  42   Top of Core Depth (m)  :   359.50
Sect:  1    Top of Section Depth(m):   359.50

LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;

  Piece No.  : PCE 1 (0-7);

  Texture    : SPARSELY PHYRIC,FINE-GRAINED,IDENTICAL TO BASALT IN
               LATTER HALF OF CORE 42-5;

  Alteration : MOD

  Comments   : MEDIUM GRAY BASALT,PCE 1 ENDS UNIT 4;

  Phenocrysts: PLAGIOCLASE


Leg : 74    Top/Bottom Interval(mm):   70/1500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   361.00
Core:  42   Top of Core Depth (m)  :   359.50
Sect:  1    Top of Section Depth(m):   359.57

LITHOLOGY: SEDIMENT;


Leg : 74    Top/Bottom Interval(mm):    0/1500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   362.50
Core:  42   Top of Core Depth (m)  :   359.50
Sect:  2    Top of Section Depth(m):   361.00

LITHOLOGY: SEDIMENT;


Leg : 74    Top/Bottom Interval(mm):    0/ 500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   363.00
Core:  42   Top of Core Depth (m)  :   359.50
Sect:  3    Top of Section Depth(m):   362.50

LITHOLOGY: SEDIMENT;


Leg : 74    Top/Bottom Interval(mm):  500/1500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   364.00
Core:  42   Top of Core Depth (m)  :   359.50
Sect:  3    Top of Section Depth(m):   363.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (51-53), 1B (55-62), 1C (63-70), 1D (70-73),
               1E (74-133), 1F (133-150);

  Texture    : APHYRIC,FINE-GRAINED;

  Structure  : MASSIVE BASALT,BLUE CLAY.MINS FILL SCATTERED VOIDS;

  Alteration : MOD TO EXT

  Comments   : PCE 1A BEGINS UNIT 5;


Leg : 74    Top/Bottom Interval(mm):    0/1500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   365.50
Core:  42   Top of Core Depth (m)  :   359.50
Sect:  4    Top of Section Depth(m):   364.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (0-20), 1B (21-36), 1C (36-57), 1D (57-92),
               1E (92-104), 1F (104-122), 1G (122-135),
               1H (135-150);

  Texture    : APHYRIC,SAME AS CORE 42-3;

  Structure  : MASSIVE BASALT,DARK GREEN CLAY.MIN FILLING OF
               SCATTERED VOIDS & VEINS;

  Alteration : MOD TO EXT

  Comments   : CONTINUATION OF UNIT 5,MEDIUM GRAY BASALT;

  Replacement: CLAY MINERALS
               DARK GREEN CLAY.MIN FILLS VOIDS & VEINS;


Leg : 74    Top/Bottom Interval(mm):    0/ 400  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   365.90
Core:  42   Top of Core Depth (m)  :   359.50
Sect:  5    Top of Section Depth(m):   365.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCE 1 (2-37);

  Texture    : APHYRIC,FINE-GRAINED,SAME AS CORES 42-3 & 42-4;

  Structure  : MASSIVE BASALT;

  Alteration : MOD TO EXT

  Comments   : CONTINUATION OF UNIT 5,MEDIUM GRAY BASALT;


Leg : 74    Top/Bottom Interval(mm):    0/1500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   370.00
Core:  43   Top of Core Depth (m)  :   368.50
Sect:  1    Top of Section Depth(m):   368.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (1-29), 1B (28-53), 1C (53-68), 1D (68-101),
               1E (101-128), 1F (127-131), 1G (131-149);

  Texture    : APHYRIC,MEDIUM-GRAINED;

  Structure  : MASSIVE BASALT;

  Alteration : MOD TO EXT

  Comments   : MEDIUM GRAY BASALT,CONTINUATION OF UNIT 5;


Leg : 74    Top/Bottom Interval(mm):    0/1500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   371.50
Core:  43   Top of Core Depth (m)  :   368.50
Sect:  2    Top of Section Depth(m):   370.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (1-12), 1B (12-48), 1C (47-57), 1D (58-89),
               1E (88-106), 1F (106-117), 1G (117-149);

  Texture    : APHYRIC,MEDIUM-GRAINED,SAME AS CORE 43-1,ZONE
               BETWEEN 36-66CM IS COARSE-GRAINED & PEGMATITIC;

  Structure  : FEW THIN VEINS ARE FILLED WITH DARK GREEN SMEC &
               MINOR PYR,MASSIVE BASALT;

  Alteration : MOD TO EXT

  Comments   : CONTINUATION OF UNIT 5,MEDIUM GRAY BASALT;

  Phenocrysts: PLAGIOCLASE
               Size(mm):       TO 5
               ELONGATE PLAG LATHS TOWARDS THE TOP OF SECTION;

  Replacement: SMECTITE
               DARK GREEN SMEC FILLS A FEW THIN VEINS;

               MINOR PYR FOUND IN THIN VEINS;


Leg : 74    Top/Bottom Interval(mm):    0/1400  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   372.90
Core:  43   Top of Core Depth (m)  :   368.50
Sect:  3    Top of Section Depth(m):   371.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (0-7), 1B (7-34), 1C (34-92), 1D (92-102),
               1E (102-140);

  Texture    : APHYRIC,COARSE-GRAINED,SAME AS CORE 43-2,PATCHY
               DISTRIBUTION OF COARSE-GRAINED BASALT;

  Structure  : THIN VEINS ARE FILLED WITH DARK GREEN SMEC & PYR IN
               PCE 1C;

  Alteration : MOD TO EXT

  Comments   : MEDIUM GRAY BASALT,CONTINUATION OF UNIT 5;

  Replacement: SMECTITE
               DARK GREEN SMEC FILLS THIN VEINS IN PCE 1C;

               PYR FILLS THIN VEINS IN PCE 1C & IS EVIDENT IN
               COARSE-GRAINED GNDMASS IN PCE 1C;


Leg : 74    Top/Bottom Interval(mm):    0/1450  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   374.45
Core:  43   Top of Core Depth (m)  :   368.50
Sect:  4    Top of Section Depth(m):   373.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (0-27), 1B (28-62), 1C (62-113),
               1D (113-145);

  Texture    : APHYRIC,MEDIUM-TO-COARSE-GRAINED,SAME AS CORE 43-3;

  Structure  : 3-4MM THICK DARK GREEN SMEC-FILLED VEIN TRAVERSES
               PCE 1D,MASSIVE BASALT;

  Alteration : MOD TO EXT

  Comments   : MEDIUM GRAY BASALT,CONTINUATION OF UNIT 5;

  Replacement: SMECTITE
               3-4MM THICK DARK GREEN SMEC-FILLED VEIN TRAVERSES
               PCE 1D;


Leg : 74    Top/Bottom Interval(mm):    0/ 350  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   374.85
Core:  43   Top of Core Depth (m)  :   368.50
Sect:  5    Top of Section Depth(m):   374.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (0-10), 1B (10-35);

  Texture    : APHYRIC,MEDIUM-TO-COARSE-GRAINED,SAME AS CORE 43-4;

  Alteration : MOD TO EXT

  Comments   : MEDIUM-GRAY BASALT,CONTINUATION OF UNIT 5;


Leg : 74    Top/Bottom Interval(mm):    0/1500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   379.00
Core:  44   Top of Core Depth (m)  :   377.50
Sect:  1    Top of Section Depth(m):   377.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (1-20), 1B (20-25), 1C (22-51), 1D (51-64),
               1E (65-86), 1F (87-132), 1G (132-149);

  Texture    : APHYRIC,MEDIUM-GRAINED,ABRUPT 3OMM WIDE FINE-GRAINED
               ZONE AT 95CM DEPTH;

  Structure  : THIN VEINS ARE FILLED WITH GREEN SMEC & MINOR PYR,
               MASSIVE BASALT;

  Alteration : MOD TO EXT

  Comments   : CONTINUATION OF UNIT 5,MEDIUM GRAY BASALT;

  Phenocrysts: PLAGIOCLASE
               Size(mm):        2-5
               SCATTERED PLAG PHENOS;

  Replacement: SMECTITE
               GREEN SMEC FILLS THIN VEINS;

               MINOR PYR FILLS VEINS;


Leg : 74    Top/Bottom Interval(mm):    0/1500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   380.50
Core:  44   Top of Core Depth (m)  :   377.50
Sect:  2    Top of Section Depth(m):   379.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (0-48), 1B (48-77), 1C (70-105),
               1D (105-150);

  Texture    : APHYRIC,MEDIUM-GRAINED,SAME AS CORE 44-1;

  Structure  : MASSIVE BASALT;

  Alteration : MOD TO EXT

  Comments   : CONTINUATION OF UNIT 5,MEDIUM GRAY BASALT;


Leg : 74    Top/Bottom Interval(mm):    0/1500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   382.00
Core:  44   Top of Core Depth (m)  :   377.50
Sect:  3    Top of Section Depth(m):   380.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (1-4), 1B (4-34), 1C (34-66), 1D (65-100),
               1E (99-115), 1F (115-136), 1G (135-150);

  Texture    : APHYRIC,MEDIUM-GRAINED,SAME AS CORE 44-2;

  Structure  : MASSIVE BASALT;

  Alteration : MOD TO EXT

  Comments   : CONTINUATION OF UNIT 5,MEDIUM GRAY BASALT;

  Phenocrysts: PLAGIOCLASE
               VERY SPARSE;


Leg : 74    Top/Bottom Interval(mm):    0/1500  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   383.50
Core:  44   Top of Core Depth (m)  :   377.50
Sect:  4    Top of Section Depth(m):   382.00

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (1-4), 1B (4-22), 1C (21-49), 1D (49-61),
               1E (62-86), 1F (86-119), 1G (119-150);

  Texture    : APHYRIC,MEDIUM-GRAINED,SAME AS CORE 44-3;

  Structure  : MASSIVE BASALT;

  Alteration : MOD TO EXT

  Comments   : CONTINUATION OF UNIT 5,MEDIUM GRAY BASALT;

  Phenocrysts: PLAGIOCLASE
               VERY SPARSE;


Leg : 74    Top/Bottom Interval(mm):    0/ 650  Analyst: Richardson, S.H.
Hole: 527   Sample Midpoint (m)    :   384.15
Core:  44   Top of Core Depth (m)  :   377.50
Sect:  5    Top of Section Depth(m):   383.50

LITHOLOGY: APHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 1A (2-3), 1B (3-10), 1C (9-25), 1D (27-35),
               1E (37-65);

  Texture    : APHYRIC,MEDIUM-GRAINED,SAME AS CORE 44-4;

  Structure  : MASSIVE BASALT;

  Alteration : MOD TO EXT
               PCES 1A-1D;
               EXT
               PYR OCCURS IN GNDMASS OF PCE 1E WHICH ALSO
               DISPLAYS AN ALTERATION HALO(?) RUNNING THE LENGTH
               OF THE PCE;

  Comments   : CONTINUATION OF UNIT 5,MEDIUM-GRAY BASALT;

  Phenocrysts: PLAGIOCLASE
               VERY SPARSE;

  Replacement:
               OCCURS IN GNDMASS OF PCE 1E;


    

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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