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Core Data from the Deep Sea Drilling Project


Leg : 59    Top/Bottom Interval(mm):   00/  20  Describer: Scott, R.
Hole: 450   Top of Core Depth(m)   :   311.50   Rock Type: IGNEOUS
Core:  34   Sample Midpoint(m)     :   311.51   Sect/Pc #:  1/

ROCK = PLAG-CPX-OL PHYRIC BASALT
       CLAST IN SEDIMENT (TUFFACEOUS VOLCANICLASTIC
       NANNOFOSSIL CHALK BRECCIA);
       Texture: PORPHYRITIC,HYALOPILITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- OLIVINE                   (    2%)
             Size(mm):        0.5

             PLAGIOCLASE               (   15%)
             Size(mm):          2
             APPROX COMP AN66;

             CLINOPYROXENE             (    8%)
             Size(mm):        0.4

Groundmass - PLAGIOCLASE               (   35%)
             Size(mm):       0.05

             CLINOPYROXENE             (   20%)

             OPAQUE MINERALS           (    5%)
             INCLUDES MAGN + ILMENITE;

             GLASS                     (   10%)
             ALTERED TO CLAYS + ZEOLITES*

Alteration - CLAY MINERALS
             Location: VESICLES,      Replacing: GLASS
             Location: GROUNDMASS
             FAIRLY EXTENSIVE;

             ZEOLITE
             Location: VESICLES,      Replacing: GLASS
             Location: GROUNDMASS
             FAIRLY EXTENSIVE;

             OTHER
             OXIDIZED REGIONS*

Vesicles   -
             Size(mm):      0.3
             Percent:     5
             Filling: CLAY.MIN,
             Shape: NEARLY

             Filling: ZEOLITES
             Shape: SPHERICAL
             BROWN CLAY EDGES WITH ZEOLITE CENTERS*




Leg : 59    Top/Bottom Interval(mm):  100/ 130  Describer: Mattey, D.
Hole: 450   Top of Core Depth(m)   :   330.50   Rock Type: IGNEOUS
Core:  36   Sample Midpoint(m)     :   333.62   Sect/Pc #:  3/PCE 1A

ROCK = PLAG-OL PHYRIC BASALT;
       Texture: PORPHYRITIC,HYALOPILITIC;
       Where sampled: PILLOW INTERIOR*

Phenocrysts- OLIVINE                   (   <1%)
             Size(mm):    0.2-0.5  Morphology: EUHEDRAL
             PSEUDOMORPHS (IDDINGSITE + SMEC);

             PLAGIOCLASE               (   10%)
             Size(mm):      0.5-4  Morphology: EUHEDRAL,EQUANT,LATHS
             GLOMEROPHYRIC (LARGER XTLS),UNZONED,GLASS
             INCLUSIONS,TWO GENERATIONS: 2-4 MM WITH APPROX
             COMP AN60-80 (EQUANT) AND 0.5-1.5 MM WITH APPROX
             COMP AN40-60 (LATHS)*

Groundmass - PLAGIOCLASE               (   30%)
             Size(mm):    0.2-0.4  Morphology: QUENCH,SKELETAL
             APPROX COMP AN50;

             CLINOPYROXENE             (    5%)
             Size(mm):        0.2
             RARE SUBOPHITIC CLOTS;

             OPAQUE MINERALS           (   TR%)
             INCLUDES MAGN + ILMENITE,SCATTERED GRANULES;

             GLASS                     (   55%)
             DEVITRIFIED,<2% ALTERED*

Alteration - CHLOROPHAEITE
             Location: VESICLES

             CLAY MINERALS             (    5%)
             Location: VESICLES       Replacing: OL PHENOS,GLASS
             SMEC REPLACES OL PHENOS;

             IDDINGSITE
             Replacing: OL PHENOS

Vesicles   -
             Size(mm):  0.1-0.5
             Percent:     2
             Filling: CHLOROPHAEITE,
             Shape: SPHERICAL

             Filling: CLAY.MIN




Leg : 59    Top/Bottom Interval(mm):  310/ 350  Describer: Mattey, D.
Hole: 450   Top of Core Depth(m)   :   330.50   Rock Type: IGNEOUS
Core:  36   Sample Midpoint(m)     :   333.83   Sect/Pc #:  3/PCE 1D

ROCK = PLAG-OL MODERATELY PHYRIC BASALT;
       Texture: MODERATELY PORPHYRITIC,SPHERULITIC-HYALOPILITIC;
       Where sampled: NEXT TO GLASSY MARGIN*

Phenocrysts- OLIVINE                   (    2%)
             Size(mm):    0.2-0.5  Morphology: SKELETAL,EUHEDRAL
             PSEUDOMORPHED BY IDDINGSITE + SMEC

             PLAGIOCLASE               (    7%)
             Size(mm):      0.5-2
             APPROX COMP AN70,ZONED,PARTLY REPLACED BY CALCITE
             + SMEC*

Groundmass - PLAGIOCLASE               (   20%)
             Size(mm):    0.1-0.3  Morphology: SKELETAL MICROLITES

             CLINOPYROXENE             (   TR%)
             Morphology: GRANULAR-SUBPOIKILITIC

             GLASS                     (   70%)
             CONTAINS FRAGMENT OF VITRIC TUFF ZENOLITH
             (5-8 MM X 2 MM)*

Alteration - CLAY MINERALS
             Replacing: OL PHENOS,PLAG PHENOS,
             Replacing: GLASS
             REPLACES MAFICS,OL PHENOS + PLAG PHENOS REPLACED
             PARTLY BY SMEC;

             IDDINGSITE
             Replacing: OL PHENOS

             CALCITE
             Replacing: PLAG PHENOS

Vesicles   -
             Percent:    TR
             VERY RARE*




Leg : 59    Top/Bottom Interval(mm): 1390/1450  Describer: Mattey, D.
Hole: 450   Top of Core Depth(m)   :   330.50   Rock Type: IGNEOUS
Core:  36   Sample Midpoint(m)     :   334.92   Sect/Pc #:  3/PCE 14B

ROCK = PLAG-OL PHYRIC BASALT;
       Texture: PORPYRITIC,HYALOPILITIC;
       Where sampled: PILLOW INTERIOR*

Phenocrysts- OLIVINE                   (   TR%)
             Size(mm):        0.2  Morphology: SUBHEDRAL
             REPLACED BY CLAY MINS;

             PLAGIOCLASE               (   15%)
             Size(mm):        2-6  Morphology: EUHEDRAL
             APPROX COMP AN60-70,LARGE EUHEDRAL ZONED XTLS*

Groundmass - PLAGIOCLASE               (   40%)
             Size(mm):    0.1-0.3  Morphology: SKELETAL MICROLITES
             FLOW ALIGNED;

             CLINOPYROXENE             (   TR%)

             OPAQUE MINERALS           (   TR%)
             INCLUDES MAGN + ILMENITE;

             GLASS                     (   45%)
             DEVITRIFIED,PARTLY ALTERED*

Alteration - CLAY MINERALS             (  <10%)
             Replacing: GLASS,OL PHENOS

Vesicles   -
             Size(mm):  0.2-0.5
             Percent:     2
             Filling: SMEC,CALCITE,ZE
             Shape: OLITE
             SMEC IS GREEN*




    

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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