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Core Data from the Deep Sea Drilling Project


Leg : 25    Top/Bottom Interval(mm):  100/1500  Analyst: Vallier, T.
Hole: 248   Sample Midpoint (m)    :   417.50
Core:  15   Top of Core Depth (m)  :   416.00
Sect:  1    Top of Section Depth(m):   416.10

LITHOLOGY: PORPHYRITIC BASALT;

  Piece No.  : PCES 1 (11-15), 2 (16-22), 3 (23-25), 4 (25-32)
               5 (34-52), 6 (52-59), 7 (59-65), 8 (65-74),
               9 (75-84), 10 (85-94), 11 (94-101), 12 (101-105),
               13 (116-121), 14 (121-131), 15 (132-140),
               16 (142-150);

  Texture    : PORPHYRITIC;

  Structure  : AMYGDALOIDAL AND CUT BY CALCITE AND CHLORITE VEINS,
               VEINS ON PCES 6 + 8 + 12 + 13 + 14 + 16 FILLED WITH
               CHLORITE AND/OR CALCITE, CALCITE/CHLORITE VEIN
               POSSIBLY PALOGONITIC AT 45 CM;

  Alteration : OLIVE BLACK (5 Y 2/1) + FRESH (INTERVAL 11-25 CM),
               DARK GRAY (N 3) + FRESH (INTERVAL 25-70 CM);

  Comments   : OLIVE BLACK (5 Y 2/1) (INTERVAL 11-25 CM), DARK GRAY
               (N 3) (INTERVAL 25-70 CM), SEE CORE FORM AND
               LITHOLOGIC DESCRIPTION IN THE INITIAL REPORTS FOR
               MORE INFORMATION;

  Vesicles   :
               Location:            Filling: CALCITE, CHLOR
               AMYGDALOIDAL WITH CALCITE AND CHLORITE;

  Phenocrysts:
               Size(mm): TO     1.2
               PHENOCRYSTS AVERAGE O.5 CM AND RARELY REACH
               1.2 CM, IN SOME PLACES FORM SMALL GLOMEROCRYSTS;

  Replacement: CALCITE

               CHLORITE
               CALCITE AND CHLORITE VEINS;


Leg : 25    Top/Bottom Interval(mm):    0/   0  Analyst:
Hole: 248   Sample Midpoint (m)    :   417.60
Core:  15   Top of Core Depth (m)  :   416.00
Sect: CC    Top of Section Depth(m):   417.60

LITHOLOGY: PORPHYRITIC BASALT;

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


Leg : 25    Top/Bottom Interval(mm): 1020/1500  Analyst: Vallier, T.
Hole: 248   Sample Midpoint (m)    :   426.50
Core:  16   Top of Core Depth (m)  :   425.00
Sect:  1    Top of Section Depth(m):   426.02

LITHOLOGY: PORPHYRITIC BASALT;

  Texture    : PORPHYRITIC, ROCKS BETWEEN 116 AND 134 CM ARE
               COARSER GRAINED;

  Comments   : BANDS AND FRAGMENTS OF DUSKY YELLOW GREEN (5 GY 5/2)
               + DARK GREEN GRAY (5 G 4/1) + DARK GRAY (N 3);


Leg : 25    Top/Bottom Interval(mm):    0/   0  Analyst:
Hole: 248   Sample Midpoint (m)    :   426.60
Core:  16   Top of Core Depth (m)  :   425.00
Sect: CC    Top of Section Depth(m):   426.60

LITHOLOGY: PORPHYRITIC BASALT;

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


Leg : 25    Top/Bottom Interval(mm): 1300/1500  Analyst: Vallier, T.
Hole: 248   Sample Midpoint (m)    :   432.50
Core:  17   Top of Core Depth (m)  :   431.00
Sect:  1    Top of Section Depth(m):   432.30

LITHOLOGY: PORPHYRITIC BASALT;

  Texture    : PORPHYRITIC, PHENOCRYSTS OF PLAGIOCLASE AND PYROXENE
               IN A FINE GRAINED GROUNDMASS;

  Structure  : SMALL CALCITE AND CHLORITE VEINS;

  Comments   : DARK GRAY (N 3);

  Phenocrysts: PLAGIOCLASE

               PYROXENE
               PHENOS OF PLAGIOCLASE AND PYROXENE IN A FINE
               GRAINED GROUNDMASS;

  Replacement: CALCITE

               CHLORITE
               CALCITE AND CHLORITE VEINS;


Leg : 25    Top/Bottom Interval(mm):  250/1500  Analyst: Vallier, T.
Hole: 248   Sample Midpoint (m)    :   434.00
Core:  17   Top of Core Depth (m)  :   431.00
Sect:  2    Top of Section Depth(m):   432.75

LITHOLOGY: PORPHYRITIC BASALT;

  Texture    : PORPHYRITIC, PHENOCRYSTS OF PLAGIOCLASE SET IN A
               GLASSY TO FINE GRAINED GROUNDMASS;

  Structure  : FRACTURES LINED WITH CALCITE AND CHLORITE +
               QUESTIONABLE MANGANESE;

  Comments   : CORE 17 SECTION 2 WAS RECOVERED FROM THE BOTTOM HOLE
               ASSEMBLY AND IS DISORIENTED WITH NO PIECES IN THE
               POSITION DRILLED, LATER RECOVERY STORED IN TWO CORE
               CATCHER BOXES WITH TOTAL RECOVERY OF BASALT IN CORE
               17 AT ABOUT 3.6 METERS;

  Phenocrysts: PLAGIOCLASE
               PHENOS OF PLAGIOCLASE SET IN A GLASSY TO FINE
               GRAINED GROUNDMASS;

  Replacement: CHLORITE

               CALCITE


Leg : 25    Top/Bottom Interval(mm):    0/   0  Analyst:
Hole: 248   Sample Midpoint (m)    :   434.10
Core:  17   Top of Core Depth (m)  :   431.00
Sect: CC    Top of Section Depth(m):   434.10

LITHOLOGY: PORPHYRITIC BASALT;

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


    

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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