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NOAA/NGDC
WDC MGG Seafloor Series Vol I

Core Data from the Deep Sea Drilling Project


Leg : 67    Top/Bottom Interval(mm): 1190/1210  Describer: Cowan, D.S.
Hole: 495   Top of Core Depth(m)   :   427.50   Rock Type: IGNEOUS
Core:  46   Sample Midpoint(m)     :   428.70   Sect/Pc #:  1/PCE 1

ROCK = APHYRIC BASALT;
       Texture: APHYRIC,HOLOCRYSTALLINE,MICROPHYRIC;
       Where sampled: PILLOW INTERIOR OR FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (   <1%)
             Size(mm):          1  Morphology: SUBHEDRAL
             APPROX COMP AN75*

Groundmass - PLAGIOCLASE               (   58%)
             Size(mm):        0.3  Morphology: SUBHEDRAL-EUHEDRAL

             CLINOPYROXENE             (   33%)
             Size(mm):    0.1-0.3  Morphology: ACICULAR-PLUMOSE
             INTERGRANULAR-SUBOPHITIC,PALE BROWN,LOCALLY
             ACICULAR-PLUMOSE;

             OPAQUE MINERALS           (    4%)
             Size(mm):       0.01  Morphology: SUBHEDRAL-EUHEDRAL
             INCLUDES MAGN + ILMENITE,GENERALLY ASSOCIATED WITH
             PYX*

Alteration - CLAY MINERALS             (    5%)
             Location: INTERSERTAL,   Replacing: GLASS
             Location: GROUNDMASS
             PROBABLY REPLACING GLASS,ORANGE-BROWN*

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These Web pages are from the Core Data from the Deep Sea Drilling Project Legs 1-96 CD-ROM produced 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, and collocated World Data Center for Marine Geology and Geophysics, Boulder. Data were compiled in cooperation with the U.S. Science Support Program, the Joint Oceanographic Institutions, Inc., and the U.S. National Science Foundation. Please see the NGDC privacy, disclaimer, and copyright notices.