Core Data from the Deep Sea Drilling Project

Leg : 84    Top/Bottom Interval(mm):    0/1380  Analyst: Arnott, R.
Hole: 566C  Sample Midpoint (m)    :   118.58
Core:   6   Top of Core Depth (m)  :   117.20
Sect:  1    Top of Section Depth(m):   117.20

LITHOLOGY: SERPENTINITE;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Structure  : SPORADICALLY SHEARED EVERY 10-30CM, VERTICAL AND
               OBLIQUE HYDRAULIC FRACTURING IS AN ORIGINAL FEATURE;

  Alteration : EXT
               INTERVALS 0-30 AND 120-138;
               MOD
               INTERVAL 31-119;
               DRILLING BRECCIA AT INTERVAL 53-65, ALTERED RIMS
               ALONG FRACTURES OF LARGE BROKEN PIECES;

  Comments   : COLOR IS BLACK(N 2/0), LARGE BROKEN PIECES;

  Phenocrysts: PYROXENE                  (   <5%)

  Groundmass : MAGNETITE                 (   <7%)
               BLACK, ID UNCERTAIN;

               CHROMITE
               BLACK, ID UNCERTAIN, EITHER MAGNETITE OR CHROMITE
               PRESENT;

  Replacement: TALC
               Minerals Replaced: SERP
               INTERVAL 0-32 IS TALC-RICH;


Leg : 84    Top/Bottom Interval(mm):   80/1500  Analyst: Baltuck, M.
Hole: 566C  Sample Midpoint (m)    :   128.40
Core:   7   Top of Core Depth (m)  :   126.90
Sect:  1    Top of Section Depth(m):   126.98

LITHOLOGY: SERPENTINITE;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Structure  : HIGHLY FRACTURED;

  Alteration : MOD
               SOME LIGHTER BLUISH GRAY(5B 4/1) ALTERED RIMS
               ALONG FRACTURES IN BIGGER BROKEN PIECES;

  Comments   : COLOR IS BLACK(N 2/0), PIECES SHATTERED BY DRILLING;

  Phenocrysts: PYROXENE                  (   <5%)
               Size(mm):       .5-2

  Groundmass : MAGNETITE                 (   <7%)
               BLACK, ID UNCERTAIN;

               CHROMITE
               BLACK, ID UNCERTAIN, EITHER MAGNETITE OR CHROMITE
               PRESENT;


Leg : 84    Top/Bottom Interval(mm):    0/ 270  Analyst: Baltuck, M.
Hole: 566C  Sample Midpoint (m)    :   128.67
Core:   7   Top of Core Depth (m)  :   126.90
Sect: CC    Top of Section Depth(m):   128.50

LITHOLOGY: SERPENTINITE;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Structure  : FRACTURED SURFACES;

  Alteration : MOD
               BLUISH GRAY WEATHERED RIMS ON FRACTURED SURFACES;

  Comments   : COLOR IS BLACK(N 2/0);

  Phenocrysts: PYROXENE                  (  <10%)
               Size(mm):       TO 2

  Groundmass : MAGNETITE                 (  <10%)
               Size(mm):        <.5

               CHROMITE
               EITHER MAGNETITE OR CHROMITE PRESENT;

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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