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Core Data from the Deep Sea Drilling Project


Leg :  7    Top/Bottom Interval(mm):    0/ 570  Analyst:
Hole:  61A  Sample Midpoint (m)    :    89.57
Core:   2   Top of Core Depth (m)  :    89.00
Sect:  1    Top of Section Depth(m):    89.00

LITHOLOGY: BASALT;

  Piece No.  : PCE 1 (0-9), 2 (9-26), 3 (26-31), 4 (31-39),
               5 (39-56);

  Texture    : ONE SURFACE "MICRO-KNOBBY", AND COVERED WITH FELTED
               XTLS OF UNIDENT (A CLAY?), POSSIBLY GLASS IN PCE 4;

  Structure  : OCCASIONAL VEINS (WHITE) TO 1MM WIDTH, FRACTURES
               WITH YELLOWISH-GRAY (5Y 6/1) COATING, CALCITE VEINS
               IN PCE 5;

  Alteration : PCES 2-5 LESS ALTERED, CHIP OFF TOP OF PCE 4 LOOKS
               VERY FRESH, PCE 1 HAS MOST ALTERED APPEARANCE;

  Comments   : OLIVE-GRAY, (5Y 3/2) AT TOP AND (5Y 5/2) AT BOTTOM;

  Vesicles   : Size(mm):     TO 5   Percent:
               Location:            Filling:
               Shape   : SPHEROIDAL

               Size(mm):    TO 22   Percent:
               Location:            Filling:
               Shape   : ELONGATED
               PCE 1 CONTAINS MOST AND LARGEST ONES, VUGS ARE
               MAINLY WHITE CALCITE, MANY ARE SOFT AND PALE GREEN
               (5G 7/2), ONE DUSKY GREEN (5G 3/2) AND A FEW LIGHT
               BROWN (5YR 6/4), PALE GREEN FOUND COMMONLY ONLY AS
               VESICLE LINING (WASHED OUT?), PLATY, CHLORITE?,
               RI=1.57;

  Groundmass : UNIDENTIFIED
               ABUNDANT WHITE SPECS, POSSIBLY SECONDARY;

  Replacement: CALCITE
               IN VESICLES AND IN VEINS;

               CHLORITE
               POSSIBLY IN VESICLE LINING;


Leg :  7    Top/Bottom Interval(mm):    0/   0  Analyst:
Hole:  61A  Sample Midpoint (m)    :    90.60
Core:   2   Top of Core Depth (m)  :    89.00
Sect: CC    Top of Section Depth(m):    90.60

LITHOLOGY: BASALT;

  Piece No.  : PCE NO PCE NUMBERS ASSIGNED;

  Comments   : TWO ADDITIONAL PCES FOUND IN CC (236 GRAMS), HAVE
               SAME LITHOLOGY AS CORE 2-1;


    

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.

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