NOAA logo, National Centers for Environmental Information, National Oceanic and Atmospheric Administration NSF logo, National Science Foundation, Division of Ocean Sciences

Core Data from the Deep Sea Drilling Project


Leg : 28    Top/Bottom Interval(mm):    0/1210  Analyst: Barrett, P.J.
Hole: 264   Sample Midpoint (m)    :   170.71
Core:  11   Top of Core Depth (m)  :   168.00
Sect:  2    Top of Section Depth(m):   169.50

LITHOLOGY: SEDIMENT (NANNO CHALK);


Leg : 28    Top/Bottom Interval(mm): 1210/1500  Analyst: Barrett, P.J.
Hole: 264   Sample Midpoint (m)    :   171.00
Core:  11   Top of Core Depth (m)  :   168.00
Sect:  2    Top of Section Depth(m):   170.71

LITHOLOGY: CONGLOMERATE BASALT;
           MICROBRECCIA;

  Texture    : PEBBLES SUBANGULAR TO ROUNDED MOSTLY 0.3 CM TO 1.5
               CM, UP TO 6 CM LONG OF LARGER PEBBLES AND
               CRYSTALLINE BASALT (CRYSTALS 0.2 TO 0.5 MM),
               SMALLER PEBBLES ARE MICROBRECCIA OR APHANITE +
               (DEVITRIFIED GLASS);

  Structure  : MATRIX IS SAND, FILM OF CALCITE CEMENT AROUND
               PEBBLES AND VEINS;

  Comments   : LIGHT BROWN (5 YR 6/4 -5/6) TO YELLOWISH BROWN
               (10 YR 5/4 - 4/2), MATRIX IS SAND, FILM OF CALCITE
               CEMENT AROUND PEBBLES AND VEINS, GREYISH RED PURPLE
               PEBBLE 5 CM LONG;

  Vesicles   : ONE LOWER SAMPLE IS AMYGDALOIDAL;

  Replacement: CALCITE
               CALCITE CEMENT AROUND PEBBLES AND VEINS;


Leg : 28    Top/Bottom Interval(mm):    0/   0  Analyst: Barrett, P.J.
Hole: 264   Sample Midpoint (m)    :   171.10
Core:  11   Top of Core Depth (m)  :   168.00
Sect: CC    Top of Section Depth(m):   171.10

LITHOLOGY: BASALT;

  Texture    : FINE GRAINED, DENSE;

  Comments   : ONE PIECE 8 CM LONG, MODERATE YELLOWISH BROWN
               (10 YR 5/4), UNIFORM;


Leg : 28    Top/Bottom Interval(mm):    0/   0  Analyst: Barrett, P.J.
Hole: 264   Sample Midpoint (m)    :   177.60
Core:  12   Top of Core Depth (m)  :   177.50
Sect: CC    Top of Section Depth(m):   177.60

LITHOLOGY: BASALT;

  Texture    : FINE GRAINED AND EQUI-GRANULAR, DENSE;

  Comments   : ONE PIECE 8 CM LONG JAMMED IN CORE CATCHER,
               DARK YELLOWISH BROWN (10 YR 4/4), HAS BEEN DRILLED
               IN TWO PERPENDICULAR DIRECTIONS, SEE LITHOLOGIC
               DESCRIPTION AND CORE FORM IN THE INITIAL REPORTS
               FOR ADDITIONAL INFORMATION;


Leg : 28    Top/Bottom Interval(mm): 1200/1500  Analyst: Barrett, P.J.
Hole: 264   Sample Midpoint (m)    :   188.50
Core:  13   Top of Core Depth (m)  :   187.00
Sect:  1    Top of Section Depth(m):   188.20

LITHOLOGY: BASALT;
           MICROBRECCIA;

  Texture    : EIGHT FRAGMENTS FROM 2 TO 6 CM ACROSS, FINE
               CRYSTALLINE TO APHANITIC BASALTIC ROCK, TWO OF THE
               FRAGMENTS ARE FEATURELESS APHANITIC PEBBLES AND THE
               REMAINING PEBBLE IS MICROBRECCIA, FOUR HAVE A FEW
               PLAG PHENOCRYSTS AND FIVE HAVE SCATTERED AMYGDULES;

  Comments   : EIGHT FRAGMENTS FROM 2 TO 6 CM - ROCKS OF MEDIUM
               GREY TO GREENISH GREY, SEE CORE FORM AND LITHOLOGIC
               DESCRIPTION IN THE INITIAL REPORTS FOR ADDITIONAL
               INFORMATION;

  Vesicles   : FIVE FRAGMENTS HAVE SCATTERED AMYGDULES;

  Phenocrysts: PLAGIOCLASE
               FOUR FRAGMENTS HAVE A FEW PLAG PHENOCRYSTS;


Leg : 28    Top/Bottom Interval(mm):    0/   0  Analyst: Barrett, P.J.
Hole: 264   Sample Midpoint (m)    :   188.60
Core:  13   Top of Core Depth (m)  :   187.00
Sect: CC    Top of Section Depth(m):   188.60

LITHOLOGY: BASALT;

  Texture    : NINE FRAGMENTS FROM 2 TO 6 CM ACROSS, FINE GRAINED
               TO APHANITIC BASALTIC ROCKS;

  Comments   : NINE FRAGMENTS OF YELLOWISH GREY AND GREENISH
               GREY TO DARK GREENISH GREY, SEE CORE FORM AND
               LITHOLOGIC DESCRIPTION IN THE INITIAL REPORTS FOR
               MORE INFORMATION;


Leg : 28    Top/Bottom Interval(mm):    0/   0  Analyst: Barrett, P.J.
Hole: 264   Sample Midpoint (m)    :   196.60
Core:  14   Top of Core Depth (m)  :   196.50
Sect: CC    Top of Section Depth(m):   196.60

LITHOLOGY: BASALT;

  Texture    : ONE FRAGMENT 7 CM LONG OF MODERATELY SORTED
               CONGLOMERATE WITH SUBROUNDED TO ROUNDED PEBBLES
               UP TO 9 CM ACROSS, PEBBLE MATRIX IS COARSE SAND
               HELD TOGETHER BY CALCITE AND CHLORITE CEMENT, BOTH
               PEBBLES AND SAND ARE OF DEVITRIFIED BASALTIC
               VITROPHYRE;

  Comments   : ONE FRAGMENT 7 CM LONG OF MODERATELY SORTED
               CONGLOMERATE WITH SUBROUNDED TO ROUNDED PEBBLES
               UP TO 9 CM ACROSS, PEBBLE MATRIX IS COARSE SAND
               HELD TOGETHER BY CALCITE AND CHLORITE CEMENT, BOTH
               PEBBLES AND SAND ARE OF DEVITRIFIED BASALTIC
               VITROPHYRE, SEE CORE FORM AND LITHOLOGIC DESCRIPTION
               IN THE INITIAL REPORTS FOR MORE INFORMATION;

  Replacement: CALCITE

               CHLORITE
               PEBBLE MATRIX IS COARSE AND HELD TOGETHER BY
               CALCITE AND CHLORITE CEMENT;


Leg : 28    Top/Bottom Interval(mm):    0/   0  Analyst: Barrett, P.J.
Hole: 264   Sample Midpoint (m)    :   206.10
Core:  15   Top of Core Depth (m)  :   206.00
Sect: CC    Top of Section Depth(m):   206.10

LITHOLOGY: BASALT;

  Texture    : ONE PIECE (6 X 6 X 6 CM) DENSE + FINE GRAINED AND
               VERY CRYSTALLINE;

  Alteration : ALBITISED BASALT;

  Comments   : ONE PIECE (6 X 6 X 6 CM) OF OLIVE GREY TO DARK
               GREENISH GREY, ALBITISED BASALT, SEE CORE FORM
               AND LITHOLOGIC DESCRIPTION IN THE INITIAL REPORTS
               FOR MORE INFORMATION;


    

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