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Core Data from the Deep Sea Drilling Project


Leg : 60    Top/Bottom Interval(mm):    0/1160  Analyst: Fryer, P.
Hole: 456A  Sample Midpoint (m)    :   115.66
Core:  11   Top of Core Depth (m)  :   114.50
Sect:  1    Top of Section Depth(m):   114.50

LITHOLOGY: MUDSTONE;
           PEBBLES OF BASALT INCLUDED;

  Piece No.  : PCE 1 (2-4), 2 (7-10), 3 (11-13), 4 (17-27),
               5 (29-32), 6 (35-37), 7 (42-44), 8 (47-50),
               9 (54-62), 10 (64-74), 11 (76-80), 12 (81-86),
               13 (88-95), 14 (98-100), 15 (102-106);

  Texture    : PEBBLES OF BASALT IN PCES 4+6, PCES 10-13+15
               CONSISTS OF HIGHLY ALTERED PILLOW BASALT FRAGMENTS
               LITHOLOGICALLY IDENTICAL TO THOSE DESCRIBED FOR
               HOLE 456-CORE 16;

  Alteration : EXT;

  Comments   : PCES 1-9+14 ARE MUDSTONES AND SANDSTONES, BASALT
               LIGHT GREY TO LIGHT GREENISH GREY (N6 TO 5G8/1);


Leg : 60    Top/Bottom Interval(mm):    0/ 970  Analyst: Fryer, P.
Hole: 456A  Sample Midpoint (m)    :   124.47
Core:  12   Top of Core Depth (m)  :   123.50
Sect:  1    Top of Section Depth(m):   123.50

LITHOLOGY: PLAG PHYRIC AND APHYRIC BASALT;

  Piece No.  : PCE 1 (3-9), 2 (10-18), 3 (19-26), 4 (28-32),
               5 (34-35), 6 (40-43), 7 (47-52), 8 (56-58),
               9 (62-65), 10 (68-74), 11 (76-83), 12 (86-89),
               13 (92-97);

  Texture    : PCES 1-3 ARE HIGHLY PLAG PHYRIC BASALT, REST OF THE
               CORE CONSISTS OF APHYRIC BASALT;

  Alteration : SLIGHTLY TO MODERATELY;

  Comments   : PCE 4 IS DARK YELLOWISH BROWN, PCE 5 IS TWO SMALL
               PCES WITH ONE GREYISH BROWN (5YR3/2) AND THE OTHER
               MEDIUM DARK GREY (N4), PCES 7-10 ARE MEDIUM DARK
               GREY (N4), ALTERATION INCLUDES 2-4CM WIDE REDDISH
               OXIDIZED ZONES ON THE SIDES OF THE PCES;

  Vesicles   : Size(mm):      1-2   Percent:    20
               PCE 6 HAS MINUTE SPHERICAL VESICLES, PCES 7-10
               HAVE NUMEROUS LARGE VESICLES OF SPHERICAL TO
               IRREGULAR SHAPE, PCES 11-13 HAVE NUMEROUS MINUTE
               AND OCCASIONAL LARGE VESICLES (2-3MM);

  Phenocrysts: NO PHENOCRYSTS IN HAND SAMPLE OF PCE 4;


Leg : 60    Top/Bottom Interval(mm):    0/ 360  Analyst: Fryer, P.
Hole: 456A  Sample Midpoint (m)    :   133.36
Core:  13   Top of Core Depth (m)  :   133.00
Sect:  1    Top of Section Depth(m):   133.00

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCE 1 (3-7), 2 (9-11), 3 (15-19), 4 (22-26),
               5 (28-31), 6 (34-36);

  Texture    : APHYRIC, PCE 6 IS A SMALL FRAGMENT OF A FRESH BASALT
               PILLOW WITH A GLASSY RIND, PCE 2 IS A HIGHLY ALTERED
               PLAG PHYRIC BASALT SIMILAR TO PCES 1-3 OF CORE 12;

  Alteration : EXT
               PCES 1-3;
               MOD
               4-6;

  Comments   : PCE 1 IS DARK YELLOWISH BROWN (10YR4/2), PCE 3 IS
               MEDIUM BLUISH GREY (5B5/1), PCE 2 PROBABLY FELL DOWN
               THE HOLE;

  Vesicles   : Size(mm):        1   Percent:    10
               PCES 4-5;

  Phenocrysts: NO PHENOCRYSTS IN HAND SAMPLE OF PCE 4;


Leg : 60    Top/Bottom Interval(mm):    0/ 420  Analyst: Fryer, P.
Hole: 456A  Sample Midpoint (m)    :   142.92
Core:  14   Top of Core Depth (m)  :   142.50
Sect:  1    Top of Section Depth(m):   142.50

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCE 1 (3-7), 2 (12-16), 3 (18-21), 4 (24-27),
               5 (30-34), 6 (37-42);

  Texture    : APHYRIC;

  Alteration : MOD
               PCE 6 HAS AN ALTERATION RIND;
               FRESH;
               REST OF SECTION;

  Comments   : PCES 1-2 ARE BROWNISH BLACK (5YR2/1);

  Vesicles   : Size(mm):    0.5-1   Percent:    30
               Location:            Filling:
               Shape   : SPHERICAL
               PCES 1-2, SOME IRREGULAR SHAPES;

               Size(mm):      0.5   Percent:
               Location:            Filling:
               Shape   : SPHERICAL
               NUMEROUS MINUTE VESICLES;


Leg : 60    Top/Bottom Interval(mm):    0/ 240  Analyst: Fryer, P.
Hole: 456A  Sample Midpoint (m)    :   152.24
Core:  15   Top of Core Depth (m)  :   152.00
Sect:  1    Top of Section Depth(m):   152.00

LITHOLOGY: PLAG PHYRIC AND APHYRIC BASALT;

  Piece No.  : PCE 1 (4-6), 2 (8-11), 3 (14-17), 4 (19-24);

  Texture    : PCE 1 IS PLAG PHYRIC BASALT SIMILAR TO CORE 12-PCES
               1-3, PCES 2-4 ARE APHYRIC;

  Alteration : MOD
               PCE 1;
               FRESH
               REST OF SECTION;

  Comments   : PCE 1 MAY HAVE FALLEN DOWN THE HOLE;

  Vesicles   : PCES 2-3 HAVE TINY SPHERICAL VESICLES WHEREAS
               PCE 4 HAS ELONGATE VESICLE TRAINS;


    

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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