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Core Data from the Deep Sea Drilling Project


Leg : 17    Top/Bottom Interval(mm):    0/   0  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   329.60
Core:  26   Top of Core Depth (m)  :   325.00
Sect: CC    Top of Section Depth(m):   329.60

LITHOLOGY: CLAYSTONE AND SILT AND BASALT;

  Piece No.  : PCE NO PCE NUMBERS ASSIGNED;

  Texture    : BASALT IS FINE-GRAINED;

  Structure  : CALCITE FILLED VEINS;

  Comments   : DARK GRAY (N2) AND MEDIUM DARK GRAY (N4), LUMPS OF
               FINE-GRAINED VESICULAR (CALCITE-FILLED) BASALT IN
               THE SILT;

  Vesicles   : Size(mm):        1   Percent:
               Location:            Filling: CALCITE
               FILLED WITH CALCITE;

  Replacement: CALCITE
               IN VESICLES AND VEINS;


Leg : 17    Top/Bottom Interval(mm):  390/1200  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   335.20
Core:  27   Top of Core Depth (m)  :   334.00
Sect:  1    Top of Section Depth(m):   334.39

LITHOLOGY: BASALT;

  Piece No.  : PCE NO PCE NUMBERS ASSIGNED;

  Texture    : FINE-GRAINED;

  Structure  : CUT BY ZEOLITE(?) FILLED FRACTURES, AT 42CM IS AN
               IRREGULAR CAVITY ONLY PARTLY FILLED BY DRUSY
               ZEOLITE (?);

  Alteration : IRREGULAR PATCHES OF ZEOLITES(?) COMMON;

  Comments   : BASALT IS GRAYISH BLACK WHEN WET AND MEDIUM-DARK
               (N4) WHEN DRY, AT 75-80CM GREENISH GRAY (5G 6/1) AND
               LIGHT BROWN (5YR 5/6) IRREGULAR MASS BOUNDED BY
               BASALT, LOOKS LIKE ENGULFED PIECE OF SEDIMENT;

  Vesicles   :
               Location:            Filling: ZEOLITE
               Shape   : SUBSPHERICAL
               HIGHLY VESICULAR, FILLED WITH ZEOLITE;

  Replacement: ZEOLITE
               FILLING VESICLES, ID UNCERTAIN IN FRACTURES,
               IRREGULAR CAVITY POSSIBLY FILLED BY DRUSY
               ZEOLITE, PATCHES OF ZEOLITE(?) COMMON;


Leg : 17    Top/Bottom Interval(mm):    0/1500  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   337.00
Core:  27   Top of Core Depth (m)  :   334.00
Sect:  2    Top of Section Depth(m):   335.50

LITHOLOGY: BASALT;

  Piece No.  : PCE NO PCE NUMBERS ASSIGNED;

  Texture    : FINE-GRAINED;

  Structure  : CUT BY FRACTURES FILLED BY WHITE (NON-CARB, SOME AS
               CALCITE) MINERALS - ZEOLITES;

  Vesicles   :
               Location:            Filling: MONT
               Shape   : SUBSPHERICAL
               VESICULAR (AT 70-80CM FOR EXAMPLE), VESICLES ARE
               BOTH SUBSPHERICAL AND ASSOCIATED WITH WIDE
               FRACTURES AND IRREGULAR PATCHES OF TRANSLUCENT
               ZEOLITE(?), MANY OF THE SMALLER AMYGDULES ARE
               MONT;

  Replacement: ZEOLITE

               MONTMORILLONITE

               CALCITE


Leg : 17    Top/Bottom Interval(mm):  180/1060  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   338.06
Core:  27   Top of Core Depth (m)  :   334.00
Sect:  3    Top of Section Depth(m):   337.18

LITHOLOGY: BASALT;
           AS IN SECTIONS 27-1+2;

  Piece No.  : PCE NO PCE NUMBERS ASSIGNED;

  Vesicles   :
               Location:            Filling: CALCITE
               CALCITE VESICLES 55-126CM;

  Replacement: CALCITE


Leg : 17    Top/Bottom Interval(mm): 1060/1500  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   338.50
Core:  27   Top of Core Depth (m)  :   334.00
Sect:  3    Top of Section Depth(m):   338.06

LITHOLOGY: LIMESTONE CONGLOMERATE;


Leg : 17    Top/Bottom Interval(mm):   50/ 800  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   339.30
Core:  27   Top of Core Depth (m)  :   334.00
Sect:  4    Top of Section Depth(m):   338.55

LITHOLOGY: LIMESTONE CONGLOMERATE;


Leg : 17    Top/Bottom Interval(mm):  770/ 800  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   339.30
Core:  27   Top of Core Depth (m)  :   334.00
Sect:  4    Top of Section Depth(m):   339.27

LITHOLOGY: LARGE MOLLUSK? SHELL;


Leg : 17    Top/Bottom Interval(mm):  800/1500  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   340.00
Core:  27   Top of Core Depth (m)  :   334.00
Sect:  4    Top of Section Depth(m):   339.30

LITHOLOGY: LIMESTONE-BASALT CONGLOMERATE;

  Piece No.  : PCE NO PCE NUMBERS ASSIGNED;

  Comments   : COBBLES OF VERY VESICULAR WEATHERED BASALT IN
               CONGLOMERATE MATRIX, BASALT PCES ARE GREATER THAN
               CORE DIAMETER AND SO APPEAR TO BE BASALT PLUGS,
               VESICULARITY OF BASALT STRIKING - 1 PCE IS ABOUT
               20% VESICLES, BASAL PCE AT 145-150CM IS ALMOST
               SCORIACEOUS, BASALT FRAGMENTS ARE LIGHT OLIVE GRAY,
               OVERALL COLOR OF LIMESTONE CONGLOMERATE AROUND
               BASALT COBBLES IS VERY PALE ORANGE (10YR 8/2);


Leg : 17    Top/Bottom Interval(mm):  550/1500  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   344.50
Core:  28   Top of Core Depth (m)  :   343.00
Sect:  1    Top of Section Depth(m):   343.55

LITHOLOGY: LAPILLI TUFF, PUMICEOUS;

  Comments   : INTERVAL (55-62) IS FERRUGINOUS;


Leg : 17    Top/Bottom Interval(mm):    0/1180  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   345.68
Core:  28   Top of Core Depth (m)  :   343.00
Sect:  2    Top of Section Depth(m):   344.50

LITHOLOGY: LAPILLI TUFF;
           INTERVALS (0-49) AND (71-118);

  Comments   : PUMICEOUS, ZEOLITIC, CALCAREOUS, MM TO CM SIZE
               GLASSY PUMICEOUS FRAGMENTS IN ZEOLITIC CALCITIC
               MATRIX, GENERAL COLOR IS GRAYISH ORANGE (10YR 7/4)
               TO DARK YELLOW ORANGE (10YR 6/6), HARD WELL
               CEMENTED (CALCITIC?), CALCITE SHOWS UP IN SMEAR
               SLIDE A SPARRY XTLS, GLASS, OLIVE TO BROWN, SEMI
               OPAQUE - ALTERED TO CLAYS!, INTERVAL (71-118) IS
               POSSIBLY GRADED BED 86-106CM, GRAINS GO FROM 5MM AT
               BASE TO LESS THAN 1MM AT TOP;


Leg : 17    Top/Bottom Interval(mm):  540/ 670  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   345.17
Core:  28   Top of Core Depth (m)  :   343.00
Sect:  2    Top of Section Depth(m):   345.04

LITHOLOGY: CAVINGS;


Leg : 17    Top/Bottom Interval(mm):  670/ 710  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   345.21
Core:  28   Top of Core Depth (m)  :   343.00
Sect:  2    Top of Section Depth(m):   345.17

LITHOLOGY: CLAYSTONE;


Leg : 17    Top/Bottom Interval(mm): 1180/1500  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   346.00
Core:  28   Top of Core Depth (m)  :   343.00
Sect:  2    Top of Section Depth(m):   345.68

LITHOLOGY: CALCAREOUS TUFF AND TUFFACEOUS LIMESTONE;


Leg : 17    Top/Bottom Interval(mm):    0/   0  Analyst: Schlanger, S.
Hole: 171   Sample Midpoint (m)    :   464.10
Core:  33   Top of Core Depth (m)  :   464.00
Sect: CC    Top of Section Depth(m):   464.10

LITHOLOGY: BASALT AND SAND AND LIMESTONE;

  Piece No.  : PCE NO PCE NUMBERS ASSIGNED;

  Texture    : ROUNDED COBBLES;

  Alteration : WEATHERED;

  Comments   : 3 PCES OF BROWN BASALT AND SMALLER PCES, SAND AND
               GRANULE SIZE LIMESTONE CHIPS PRESENT;

  Vesicles   : VESICULAR;


    

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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