Core Data from the Deep Sea Drilling Project

Leg : 29    Top/Bottom Interval(mm):   70/   0  Describer: Ovenshine, A.T.
Hole: 283   Top of Core Depth(m)   :   589.50   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   589.57   Sect/Pc #:  1/PCE 7

ROCK = BASALT
       EXTENSIVELY ALTERED;
       Texture: FINE-GRAINED
       SOME SUGGESTION OF OPHITIC OR SUBOPHITIC TEXTURE,
       ORIGINAL TEXTURE INDETERMINATE BECAUSE OF
       ALTERATION PRODUCTS;

Groundmass - PLAGIOCLASE               (   20%)
             Morphology: LATHS

             OPAQUE MINERALS           (   10%)
             BLACK;

             COMBINATION               (    3%)
             INCLUDES OL+PYX?,ALTERED;

Alteration - SERPENTINITE              (   10%)
             Replacing: GLASS
             INTERSERTAL GLASS;

             CALCITE

             COMBINATION               (   52%)
             INCLUDES CLAY+SERP+ZEOL*




Leg : 29    Top/Bottom Interval(mm):   70/   0  Describer: Andrews, P.B.
Hole: 283   Top of Core Depth(m)   :   589.50   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   589.57   Sect/Pc #:  1/

ROCK = BASALT
       PROBABLY SAMPLED AT 118-127CM;
       Texture: HOLOCRYSTALLINE, SUBOPHITIC*

Groundmass - PLAGIOCLASE
             Size(mm):    0.1-1.0  Morphology: LATHS
             POSSIBLY LABRADORITE;

             PYROXENE
             Size(mm):       TO 2  Morphology: EUHEDRAL
             DIVIDED INTO MANY SEGMENTS BY LONG PLAG LATHS,
             EXTENSIVELY ALTERED TO PALE GREEN FIBROUS MASS,
             SOME TWINNED WITH CONSECUTIVE RING STRUCTURES,
             PROBABLY ALTERED TO SERP GROUP MINERAL;

             MAGNETITE
             Size(mm):      0.030  Morphology: EUHEDRAL

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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