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Core Data from the Deep Sea Drilling Project


Leg : 26    Top/Bottom Interval(mm):  320/ 420  Analyst: Kempe, D.
Hole: 251A  Sample Midpoint (m)    :   477.42
Core:  29   Top of Core Depth (m)  :   477.00
Sect:  1    Top of Section Depth(m):   477.32

LITHOLOGY: OLIVINE BASALT (GLASSY);
           BASALT GLASS;

  Texture    : THREE ROUNDED WEATHERED PARTLY BRECCIATED PEBBLES OF
               GLASSY OLIVINE BASALT WITH BASALTIC GLASS,N=1.602
               FOR PALE REDDISH-BROWN OUTER GLASS OF NO. 3 COBBLE;

  Comments   : WEATHERED, SEE CORE FORM AND LITHOLOGIC DESCRIPTION
               IN THE INITIAL REPORTS FOR MORE INFORMATION;


Leg : 26    Top/Bottom Interval(mm):  850/1000  Analyst: Kempe, D.
Hole: 251A  Sample Midpoint (m)    :   487.50
Core:  30   Top of Core Depth (m)  :   486.50
Sect:  1    Top of Section Depth(m):   487.35

LITHOLOGY: BASALT (VESICULAR);

  Structure  : SOME CALCITE FILMING;

  Texture    : HIGHLY WEATHERED VESICULAR BASALT WITH SOME CALCITE
               FILMING, SEQUENCE OF 5 CM PEBBLE - 3 CM PEBBLE -
               SMALL PEBBLES - 7 CM PEBBLE;

  Comments   : HIGHLY WEATHERED BASALT, SEQUENCE OF 5 CM PEBBLE -
               3 CM PEBBLE - SMALL PEBBLES - 7 CM PEBBLE, SEE CORE
               FORM AND LITHOLOGIC DESCRIPTION IN THE INITIAL
               REPORTS FOR MORE INFORMATION;

  Vesicles   : HIGHLY WEATHERED VESICULAR BASALT WITH CALCITE
               FILMING;

  Replacement: CALCITE
               SOME CALCITE FILMING;


Leg : 26    Top/Bottom Interval(mm): 1350/1500  Analyst: Kempe, D.
Hole: 251A  Sample Midpoint (m)    :   491.00
Core:  31   Top of Core Depth (m)  :   489.50
Sect:  1    Top of Section Depth(m):   490.85

LITHOLOGY: BASALT (VESICULAR);

  Structure  : FRACTURED VESICULAR BASALT;

  Comments   : HIGHLY WEATHERED GREY BROWN FRACTURED
               VESICULAR BASALT, FOR MORE INFORMATION SEE CORE FORM
               AND LITHOLOGIC DESCRIPTION IN THE INITIAL REPORTS;

  Vesicles   : HIGHLY WEATHERED FRACTURED VESICULAR BASALT;


Leg : 26    Top/Bottom Interval(mm):    0/1500  Analyst: Kempe, D.
Hole: 251A  Sample Midpoint (m)    :   492.50
Core:  31   Top of Core Depth (m)  :   489.50
Sect:  2    Top of Section Depth(m):   491.00

LITHOLOGY: BASALT;

  Structure  : HIGHLY WEATHERED FRACTURED BASALT, CALCITE FILMING
               AT 3 CM AND AT 24 CM, CALCITE VEINS AT 77 CM AND
               85 CM, CALCITE VEINS AND FILM AT 110 CM + AT 115 CM
               AND 120 CM;

  Comments   : HIGHLY WEATHERED GREY BROWN FRACTURED BASALT, SEE
               CORE FORM AND LITHOLOGIC DESCRIPTION IN THE INITIAL
               REPORTS FOR MORE INFORMATION;

  Vesicles   : HIGHLY VESICULAR AT 44 - 50 CM;

  Replacement: CALCITE
               CALCITE FILMING AND VEINS;


Leg : 26    Top/Bottom Interval(mm):    0/1500  Analyst: Kempe, D.
Hole: 251A  Sample Midpoint (m)    :   494.00
Core:  31   Top of Core Depth (m)  :   489.50
Sect:  3    Top of Section Depth(m):   492.50

LITHOLOGY: BASALT;

  Structure  : HIGHLY WEATHERED FRACTURED BASALT, CALCITE VEINS AND
               FILMS AT 28 CM AND 30 CM AND 40 CM;

  Alteration : FRESH AREA AT 128 CM - 137 CM;

  Comments   : HIGHLY WEATHERED GREY BROWN FRACTURED BASALT, SEE
               CORE FORM AND LITHOLOGIC DESCRIPTION IN THE INITIAL
               REPORTS FOR MORE INFORMATION;

  Vesicles   : VESICLES AT 5 CM;

  Replacement: CALCITE
               CALCITE FILMING AND VEINS;


Leg : 26    Top/Bottom Interval(mm):    0/1500  Analyst: Kempe, D.
Hole: 251A  Sample Midpoint (m)    :   495.50
Core:  31   Top of Core Depth (m)  :   489.50
Sect:  4    Top of Section Depth(m):   494.00

LITHOLOGY: BASALT;

  Texture    : COARSE GRAINED + SOME HIGHLY WEATHERED FRACTURED
               BASALT, INTERVAL (115-145 CM) IS FRACTURED - ROUNDED
               BUT NOT WEATHERED;

  Structure  : FRACTURED BASALT, CALCITE VEIN AT 62 CM, CALCITE
               FILM AT 105 CM, FRACTURED AND WEATHERED IN FRACTURES
               INTERVAL (0-45 CM), INTERVAL (115-145 CM) IS
               FRACTURED ROUNDED BUT NOT WEATHERED;

  Alteration : FRESH AREA (0-45 CM) BUT FRACTURED AND WEATHERED
               IN FRACTURES, FRESH (85-99 CM), FRESH (115-145 CM)
               BUT FRACTURED - ROUNDED BUT NOT WEATHERED;

  Comments   : SOME FRESH GREY COARSE GRAINED + SOME HIGHLY
               WEATHERED GREY BROWN FRACTURED BASALT, SEE CORE FORM
               AND LITHOLOGIC DESCRIPTION IN THE INITIAL REPORTS
               FOR MORE INFORMATION;

  Replacement: CALCITE
               CALCITE FILMING AND VEINS;


Leg : 26    Top/Bottom Interval(mm):    0/1500  Analyst: Kempe, D.
Hole: 251A  Sample Midpoint (m)    :   497.00
Core:  31   Top of Core Depth (m)  :   489.50
Sect:  5    Top of Section Depth(m):   495.50

LITHOLOGY: BASALT;

  Structure  : FRACTURED BASALT, CALCITE VEINS AT 5 CM, CALCITE
               FILM AT 50-54 CM, INTERVAL (91-115 CM) IS FRACTURED
               AND PARTLY WEATHERED, CALCITE FILM AT 117-119 CM,
               CALCITE FILM AT 130-133 CM;

  Alteration : FRESH INTERVAL (91-115 CM) BUT FRACTURED AND
               PARTLY WEATHERED;

  Comments   : HIGHLY WEATHERED GREY BROWN FRACTURED BASALT, SEE
               CORE FORM AND LITHOLOGIC DESCRIPTION IN THE INITIAL
               REPORTS FOR MORE INFORMATION;

  Replacement: CALCITE
               CALCITE FILMING AND VEINS;


    

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