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Core Data from the Deep Sea Drilling Project


Leg : 64    Top/Bottom Interval(mm):  280/   0  Describer: Saunders, A.
Hole: 477A  Top of Core Depth(m)   :    32.50   Rock Type: IGNEOUS
Core:   1   Sample Midpoint(m)     :    32.78   Sect/Pc #:  1/PCE 4

ROCK = PLAG MODERATELY PHYRIC BASALT;
       Texture: MODERATELY PORPHYRITIC,QUENCH;
       Where sampled: NEXT TO GLASSY MARGIN*

Phenocrysts- OLIVINE                   (    5%)
             Size(mm):     TO 0.5  Morphology: EUHEDRAL-SUBHEDRAL
             FREQUENTLY INTERGROWN WITH PLAG TO FORM
             GLOMEROCRYSTS;

             PLAGIOCLASE               (    5%)
             Size(mm):       TO 1  Morphology: LATH-SHAPED,TABULAR
             MORE TABULAR XTLS THAN LATH-SHAPED ONES,FREQUENTLY
             INTERGROWN WITH OL TO FORM GLOMEROCRYSTS;

             CLINOPYROXENE             (    0%)

Groundmass - OLIVINE                   (    5%)
             Size(mm):       <0.1  Morphology: SKELETAL
             VISIBLE BECAUSE OF HIGH R.I.;

             MICROCRYST GROUNDMASS
             INCLUDES PLAG + CPX + MAGN + MESOSTASIS,SHEAF
             TEXTURED PYX AND PLAG MICROLITES,QUENCH TEXTURE,
             ABOUT 5% OF ROCK CONSISTS OF AGGREGATES AND
             STRINGS OF OPAQUES (?MAGN)*

Alteration - CARBONATE                 (    3%)
             Location: VEINS,
             Location: CAVITIES

             CLAY MINERALS             (   <2%)
             Location: VESICLES       Replacing: OL
             SOME REPLACEMENT OF OL,COLOR IS GREEN*

Vesicles   -
             Size(mm):        1
             Percent:    <2
             Location: RANDOM
             Filling: CLAY.MIN
             Shape: SPHERICAL
             CLAY.MIN IS GREEN*




Leg : 64    Top/Bottom Interval(mm):  500/   0  Describer: Saunders, A.
Hole: 477A  Top of Core Depth(m)   :    32.50   Rock Type: IGNEOUS
Core:   1   Sample Midpoint(m)     :    33.00   Sect/Pc #:  1/PCE 7

ROCK = PLAG-OL PHYRIC BASALT;
       Texture: PORPHYRITIC,INTERGRANULAR;
       Where sampled: FLOW INTERIOR
       OR SILL INTERIOR*

Phenocrysts- OLIVINE                   (   <5%)
             Size(mm):    0.4-1.0  Morphology: ANHEDRAL

             PLAGIOCLASE               (   20%)
             Size(mm):        1-4  Morphology: EQUANT-TABULAR
             APPROX COMP AN65-75,UNZONED RESORBED XTLS WHICH
             FREQUENTLY OCCUR AS AGGREGATES*

Groundmass - PLAGIOCLASE               (   40%)
             Size(mm):       TO 1  Morphology: LATHS
             APPROX COMP AN50-60;

             CLINOPYROXENE             (   30%)
             Size(mm):         <1  Morphology: ANHEDRAL
             APPROX COMP AUGITE,INTERGRANULAR;

             OPAQUE MINERALS
             Size(mm):   0.05-0.4  Morphology: ANHEDRAL-CUBIC
             INCLUDES MAGN + ILMENITE,INTERGRANULAR*

Alteration - CLAY MINERALS             (    5%)
             Location: INTERSTITIAL   Replacing: MESOSTASIS
             REPLACING MESOSTASIS IS QUESTIONABLE*




Leg : 64    Top/Bottom Interval(mm):  330/   0  Describer: Saunders, A.
Hole: 477A  Top of Core Depth(m)   :    32.50   Rock Type: IGNEOUS
Core:   1   Sample Midpoint(m)     :    34.33   Sect/Pc #:  2/PCE 4

ROCK = PLAG-OL PHYRIC DOLERITE
       OR BASALT;
       Texture: COARSE,INTERGRANULAR;
       Where sampled: FLOW INTERIOR
       OR SILL INTERIOR*

Phenocrysts- OLIVINE                   (    5%)
             Size(mm):    0.5-1.5  Morphology: SUBHEDRAL

             PLAGIOCLASE               (   15%)
             Size(mm):        2-4  Morphology: EQUANT
             LARGE--DISTINCT FROM GROUNDMASS PLAG*

Groundmass - OLIVINE                   (    5%)
             Size(mm):         <1  Morphology: ANHEDRAL
             MAY BE MICROPHENOS;

             PLAGIOCLASE               (   50%)
             Size(mm):      0.5-2  Morphology: ELONGATE LATHS
             RARELY OPHITICALLY ENCLOSED IN CPX;

             CLINOPYROXENE             (   15%)
             Size(mm):       TO 4  Morphology: ANHEDRAL,ELONGATE
             APPROX COMP ?AUGITE,FREQUENTLY ELONGATE,GENERALLY
             INTERGRANULAR

             OPAQUE MINERALS           (    5%)
             Morphology: ANHEDRAL-EUHEDRAL
             INCLUDES MAGN (TITAN.MT) + ILMENITE,INTERGRANULAR*

Vesicles   -
             Size(mm):       <1
             Percent:     5
             Location: THROUGHOUT
             Filling: EMPTY
             Shape: IRREGULAR-

             Shape: SPHERICAL




Leg : 64    Top/Bottom Interval(mm):  140/   0  Describer: Fornari, D.
Hole: 477A  Top of Core Depth(m)   :    42.00   Rock Type: IGNEOUS
Core:   2   Sample Midpoint(m)     :    42.14   Sect/Pc #:  1/PCE 3B

ROCK = APHYRIC BASALT;
       Texture: APHYRIC,HYALOPILITIC;
       Where sampled: GLASSY MARGIN*

Phenocrysts- PLAGIOCLASE               (    3%)
             Size(mm):    0.1-0.5
             MICROPHENOS,SOME QUENCH TEXTURE*

Groundmass - MAGNETITE                 (    2%)
             Size(mm):       0.05

             GLASS                     (   90%)
             MODERATELY ALTERED,BROWNISH BLACK*

Alteration - CARBONATE                 (    1%)
             Location: SMALL
             Location: CAVITIES

             PALAGONITE                (    4%)

Vesicles   -
             Percent:     0




Leg : 64    Top/Bottom Interval(mm):  450/   0  Describer: Fornari, D.
Hole: 477A  Top of Core Depth(m)   :    42.00   Rock Type: IGNEOUS
Core:   2   Sample Midpoint(m)     :    42.45   Sect/Pc #:  1/PCE 6B

ROCK = PLAG-CPX PHYRIC DOLERITE
       DOLERITE TO COARSE GRAINED BASALT;
       Texture: SUBOPHITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (   26%)
             Size(mm):        1-6  Morphology: TABULAR,LATHS
             APPROX COMP AN50,OFTEN STRONGLY ZONED;

             CLINOPYROXENE             (   18%)
             Size(mm):        1-3  Morphology: SUBHEDRAL-ANHEDRAL
             APPROX COMP AUGITE,FRACTURED ALONG CLEAVAGE*

Groundmass - OLIVINE                   (    8%)
             Size(mm):  0.25-0.75  Morphology: SUBHEDRAL-ANHEDRAL

             PLAGIOCLASE               (   36%)
             Size(mm):   0.1-0.75

             CLINOPYROXENE
             REPRESENTED IN CPX PHENO %;

             OPAQUE MINERALS           (    9%)
             Size(mm):   0.05-0.3  Morphology: CRUCIFORM,TRELLIS-TYPE
             INCLUDES SOME CRUCIFORM MAGN PIECES + TRELLIS-TYPE
             ILMENITE,PERCENTAGES OBTAINED BY POINT COUNT*

Alteration - COMBINATION               (    3%)
             INCLUDES CLAY.MIN + ZEOLITES*

Vesicles   -
             Percent:     0




Leg : 64    Top/Bottom Interval(mm):  100/   0  Describer: Fornari, D.
Hole: 477A  Top of Core Depth(m)   :    42.00   Rock Type: IGNEOUS
Core:   2   Sample Midpoint(m)     :    43.60   Sect/Pc #:  2/PCE 1

ROCK = PLAG PHYRIC DOLERITE
       OR COARSE BASALT;
       Texture: INEQUIGRANULAR,COARSE;
       Where sampled: FLOW INTERIOR
       OR SILL INTERIOR*

Phenocrysts- OLIVINE
             REPRESENTED IN OL GROUNDMASS %;

             PLAGIOCLASE               (   16%)
             Size(mm):    0.5-3.5  Morphology: TABULAR LATHS
             STRONG NORMAL ZONING;

             CLINOPYROXENE
             REPRESENTED IN CPX GROUNDMASS %*

Groundmass - OLIVINE                   (    9%)
             Size(mm):     0.25-1  Morphology: EUHEDRAL-ANHEDRAL

             PLAGIOCLASE               (   38%)
             Size(mm):    0.1-0.5

             CLINOPYROXENE             (   15%)
             Size(mm):     0.25-1  Morphology: SUBHEDRAL-ANHEDRAL
             APPROX COMP AUGITE,FRACTURED ALONG CLEAVAGE
             PLANES;

             OPAQUE MINERALS           (   13%)
             Size(mm):   0.05-0.2
             INCLUDES MAGN + ILMENITE,ASSOCIATED WITH BREAKDOWN
             OF MAFIC MINS (CPX + OL),GOOD XTL FORM,PERCENTAGES
             OBTAINED BY POINT COUNT*

Alteration - COMBINATION               (    9%)
             Location: INTERGRAIN
             Location: BOUNDARIES
             INCLUDES CLAY.MIN + ZEOLITES*




Leg : 64    Top/Bottom Interval(mm):  280/   0  Describer: Fornari, D.
Hole: 477A  Top of Core Depth(m)   :    42.00   Rock Type: IGNEOUS
Core:   2   Sample Midpoint(m)     :    43.78   Sect/Pc #:  2/PCE 3

ROCK = PLAG-OL-CPX PHYRIC DOLERITE;
       Texture: SUBOPHITIC,VESICULAR;
       Where sampled: FLOW INTERIOR
       OR SILL INTERIOR?*

Phenocrysts- OLIVINE                   (   17%)
             Size(mm):  0.25-0.75  Morphology: EUHEDRAL-ANHEDRAL
             VERY FRESH;

             PLAGIOCLASE               (   14%)
             Size(mm):      0.5-3
             APPROX COMP AN54;

             CLINOPYROXENE             (    9%)
             Size(mm):    0.1-0.5
             APPROX COMP AUGITE,FRESH ALTHOUGH FRACTURED ALONG
             CLEAVAGE*

Groundmass - OLIVINE
             REPRESENTED IN OL PHENO %;

             PLAGIOCLASE               (   39%)
             Size(mm):    0.1-0.5

             CLINOPYROXENE
             REPRESENTED IN CPX PHENO %;

             OPAQUE MINERALS           (    9%)
             Size(mm):     0.05-1
             INCLUDES MAGN + ILMENITE,PERCENTAGES OBTAINED BY
             POINT COUNT*

Alteration - COMBINATION               (    6%)
             Location: INTERGRAIN
             Location: BOUNDARIES,
             Location: PERIPHERY OF
             Location: VESICLES
             INCLUDES CLAY.MIN + ZEOLITES*

Vesicles   -
             Size(mm): 0.75-1.5
             Percent:     6
             Location: RANDOM
             Shape: ROUND
             LITTLE OR NO FILLING*




Leg : 64    Top/Bottom Interval(mm):  480/   0  Describer: Fornari, D.
Hole: 477A  Top of Core Depth(m)   :    42.00   Rock Type: IGNEOUS
Core:   2   Sample Midpoint(m)     :    45.48   Sect/Pc #:  3/PCE 7

ROCK = PLAG-CPX PHYRIC BASALT;
       Texture: PORPHYRITIC,SUBOPHITIC,COARSE-GRAINED;
       Where sampled: OTHER
       SILL INTERIOR*

Phenocrysts- PLAGIOCLASE               (   17%)
             Size(mm):      0.5-3  Morphology: TABULAR-LATHS
             STRONG ZONING IN MOST;

             CLINOPYROXENE             (   16%)
             Size(mm):   0.5-7.75  Morphology: ANHEDRAL-SUBHEDRAL
             MOSTLY FRACTURED ALONG CLEAVAGE*

Groundmass - OLIVINE                   (    4%)
             Size(mm):    0.1-0.4  Morphology: ANHEDRAL-SUBHEDRAL
             FEW SUBHEDRAL;

             PLAGIOCLASE               (   38%)
             Size(mm):    0.1-0.5

             CLINOPYROXENE
             REPRESENTED IN CPX PHENO %;

             OPAQUE MINERALS           (   12%)
             Size(mm):   0.05-0.2
             INCLUDES MAGN + ILMENITE,MANY CONCENTRATED AROUND
             PARTIALLY RESORBED CPX,PERCENTAGES OBTAINED BY
             POINT COUNT*

Alteration - COMBINATION               (    9%)
             Location: PERIPHERY OF
             Location: VESICLES
             INCLUDES CLAY.MIN + ZEOLITES,FOUND BETWEEN CPX +
             OL GRAINS AND AROUND SOME VESICLES*

Vesicles   -
             Size(mm):   0.75-4
             Percent:     4
             Location: RANDOM
             Filling: EMPTY
             Shape: ROUNDED
             SOME ALTERATION AROUND PERIPHERY*




Leg : 64    Top/Bottom Interval(mm):   50/   0  Describer: Fornari, D.
Hole: 477A  Top of Core Depth(m)   :    42.00   Rock Type: IGNEOUS
Core:   2   Sample Midpoint(m)     :    46.55   Sect/Pc #:  4/PCE 1

ROCK = PLAG-CPX-OL PHYRIC DOLERITE;
       Texture: INEQUIGRANULAR;
       Where sampled: OTHER
       SILL INTERIOR*

Phenocrysts- OLIVINE                   (   15%)
             Size(mm):     0.25-1  Morphology: EUHEDRAL-ANHEDRAL
             SOME FRACTURING BUT VERY FRESH;

             PLAGIOCLASE               (   15%)
             Size(mm):      0.5-4  Morphology: TABULAR,LATHS
             APPROX COMP AN60,STRONG ZONING,SOME BLEBS + LARGER
             INCLUSIONS;

             CLINOPYROXENE             (   15%)
             Size(mm):   0.25-1.5  Morphology: SUBHEDRAL-ANHEDRAL
             APPROX COMP AUGITE,MANY FRACTURED ALONG CLEAVAGE,
             FRESH*

Groundmass - OLIVINE
             REPRESENTED IN OL PHENO %;

             PLAGIOCLASE               (   40%)
             Size(mm):    0.1-0.5
             MICROLITES;

             CLINOPYROXENE
             REPRESENTED IN CPX PHENO %;

             OPAQUE MINERALS           (   10%)
             Size(mm):   0.05-0.1  Morphology: SUBHEDRAL-ANHEDRAL
             INCLUDES MAGN + ILMENITE,PERCENTAGES OBTAINED BY
             POINT COUNT*

Alteration - COMBINATION               (    5%)
             Location: INTERGRAIN
             Location: BOUNDARIES
             INCLUDES CLAY.MIN + ZEOLITES*

Vesicles   -
             Percent:     0




Leg : 64    Top/Bottom Interval(mm):  850/   0  Describer: Fornari, D.
Hole: 477A  Top of Core Depth(m)   :    42.00   Rock Type: IGNEOUS
Core:   2   Sample Midpoint(m)     :    47.35   Sect/Pc #:  4/PCE 10

ROCK = PLAG-CPX-OL PHYRIC DOLERITE;
       Texture: PORPHYRITIC,INEQUIGRANULAR;
       Where sampled: OTHER
       SILL INTERIOR*

Phenocrysts- OLIVINE                   (   15%)
             Size(mm):   0.1-0.75  Morphology: EUHEDRAL-ANHEDRAL
             FRESH;

             PLAGIOCLASE               (   17%)
             Size(mm):        1-5  Morphology: TABULAR LATHS
             APPROX COMP AN50-60,SOME ZONED;

             CLINOPYROXENE             (   17%)
             Size(mm):      0.3-1  Morphology: SUBHEDRAL-ANHEDRAL
             APPROX COMP AUGITE,FRACTURED ALONG CLEAVAGE BUT
             FRESH*

Groundmass - OLIVINE
             REPRESENTED IN OL PHENO %;

             PLAGIOCLASE               (   39%)

             CLINOPYROXENE
             REPRESENTED IN CPX PHENO %;

             OPAQUE MINERALS           (   10%)
             INCLUDES MAGN + ILMENITE,PERCENTAGES OBTAINED BY
             POINT COUNT*

Alteration - COMBINATION               (    2%)
             Location: INTERGRAIN
             Location: BOUNDARIES
             INCLUDES CLAY.MIN + ZEOLITES*

Vesicles   -
             Percent:     0




Leg : 64    Top/Bottom Interval(mm):  580/   0  Describer: Fornari, D.
Hole: 477A  Top of Core Depth(m)   :    55.00   Rock Type: IGNEOUS
Core:   3   Sample Midpoint(m)     :    55.58   Sect/Pc #:  1/PCE 6A

ROCK = PLAG-CPX PHYRIC DOLERITE/GABBRO;
       Texture: PORPHYRITIC,OPHITIC-SUBOPHITIC,COARSE;
       Where sampled: OTHER
       SILL BASE?*

Phenocrysts- PLAGIOCLASE               (   32%)
             Size(mm):        1-3  Morphology: TABULAR LATHS
             APPROX COMP AN50,STRONG ZONING,SOME SUBOPHITIC
             TEXTURE;

             CLINOPYROXENE             (   23%)
             Size(mm):      0.5-4  Morphology: ANHEDRAL-SUBHEDRAL
             APPROX COMP AUGITE,EXTENSIVELY FRACTURED ALONG
             CLEAVAGE,OPHITICALLY ENCLOSING PLAG*

Groundmass - OLIVINE                   (    6%)
             Size(mm):  0.25-0.75  Morphology: ANHEDRAL-SUBHEDRAL

             PLAGIOCLASE               (   25%)
             Size(mm):    0.1-0.5

             CLINOPYROXENE
             REPRESENTED IN CPX PHENO %;

             OPAQUE MINERALS           (   10%)
             Size(mm):   0.05-0.2  Morphology: SUBHEDRAL-ANHEDRAL
             INCLUDES MAGN + ILMENITE,PERCENTAGES OBTAINED BY
             POINT COUNT*

Alteration - COMBINATION               (    4%)
             Location: INTERGRAIN     Replacing: CPX
             Location: BOUNDARIES
             INCLUDES CLAY.MIN + ZEOLITES*




Leg : 64    Top/Bottom Interval(mm):  870/   0  Describer: Saunders, A.
Hole: 477A  Top of Core Depth(m)   :    55.00   Rock Type: IGNEOUS
Core:   3   Sample Midpoint(m)     :    55.87   Sect/Pc #:  1/PCE 9

ROCK = DOLERITE;
       Texture: STRONGLY INEQUIGRANULAR,VESICULAR,COARSE;
       Where sampled: FLOW INTERIOR
       OR SILL INTERIOR*

Phenocrysts- OLIVINE
             SOME OL LISTED UNDER GROUNDMASS MAY BE PHENOS;

             PLAGIOCLASE
             SOME PLAG LISTED UNDER GROUNDMASS MAY BE PHENOS*

Groundmass - OLIVINE                   (  4.3%)
             Size(mm):      1-1.5  Morphology: SUBHEDRAL-ANHEDRAL

             PLAGIOCLASE               ( 57.1%)
             Size(mm):        1-4  Morphology: LATHS
             THERE IS A SERIATE GRADATION FROM LATH-SHAPED XTLS
             TO LARGER RESORBED ZONED XTLS;

             CLINOPYROXENE             ( 21.9%)
             Size(mm):       TO 4  Morphology: IRREGULAR
             APPROX COMP AUGITE,LARGE IRREGULAR XTLS FREQUENTLY
             SUBOPHITICALLY ENCLOSING PLAG;

             OPAQUE MINERALS           (  2.2%)
             INCLUDES MAGN + ILMENITE;

             MICROCRYST GROUNDMASS     (    5%)
             Size(mm):       <0.5
             MICROXLN MESOSTASIS CONTAINING CPX + MAGN + PLAG,
             USUALLY SURROUNDS VESICLES,PERCENTAGES OBTAINED BY
             POINT COUNT*

Vesicles   -
             Size(mm):     TO 4
             Percent:  14.2
             Location: THROUGHOUT
             Filling: EMPTY,
             Shape: SPHERICAL-

             Filling: MESOSTASIS
             Shape: IRREGULAR
             USUALLY EMPTY BUT MAY CONTAIN MICROXLN MESOSTASIS*




Leg : 64    Top/Bottom Interval(mm):  200/   0  Describer: Saunders, A.
Hole: 477A  Top of Core Depth(m)   :    55.00   Rock Type: IGNEOUS
Core:   3   Sample Midpoint(m)     :    56.70   Sect/Pc #:  2/PCE 2A

ROCK = GABBRO;
       Texture: STRONGLY INEQUIGRANULAR,COARSE-GRAINED;
       Where sampled: FLOW INTERIOR
       OR SILL INTERIOR*

Phenocrysts- OLIVINE
             MANY OLIVINES LISTED UNDER GROUNDMASS ARE PHENOS;

             PLAGIOCLASE
             MANY PLAGS LISTED UNDER GROUNDMASS ARE PHENOS*

Groundmass - OLIVINE                   (  6.2%)
             Size(mm):       <1.5  Morphology: ANHEDRAL

             PLAGIOCLASE               ( 69.7%)
             Size(mm):    0.5-6.0  Morphology: LATHS,TABULAR
             THERE IS A SERIATE GRADATION FROM LATHS (0.5-1.0
             MM/APPROX COMP AN50-60) TO LARGE TABULAR XTLS
             (1.0-6.0 MM/APPROX COMP AN80?/STRONGLY ZONED);

             CLINOPYROXENE             ( 18.9%)
             Size(mm):       TO 5  Morphology: ANHEDRAL
             APPROX COMP AUGITE BUT A LOW R.I. CPX IS PRESENT,
             ANHEDRAL GRAINS OPHITICALLY ENCLOSING PLAG;

             OPAQUE MINERALS           (  4.9%)
             Size(mm):       <0.5  Morphology: CUBOID-SKELETAL
             INCLUDES MAGN + ILMENITE,APPROX COMP TITAN.MT,
             INTERSTITIAL;

             MICROCRYST GROUNDMASS     (    5%)
             INCLUDES PYX + PLAG + MAGN,INTERSTITIAL,
             PERCENTAGES OBTAINED BY POINT COUNT*

Alteration - CLAY MINERALS             (    0%)
             NONE SEEN*

Vesicles   -
             Size(mm):  0.5-1.5
             Percent:     2
             Location: INTERSTICES
             Filling: EMPTY
             Shape: IRREGULAR
             CAVITIES*




Leg : 64    Top/Bottom Interval(mm):  950/   0  Describer: Saunders, A.
Hole: 477A  Top of Core Depth(m)   :    55.00   Rock Type: IGNEOUS
Core:   3   Sample Midpoint(m)     :    58.95   Sect/Pc #:  3/PCE 13

ROCK = PLAG PHYRIC DOLERITE
       NOTE:THIN SECTION IS VERY POOR--MUCH OF SLIDE NOT
       PRESERVED SO NO MESOSTASIS SEEN;
       Texture: PORPHYRITIC,SUBOPHITIC,COARSE;
       Where sampled: FLOW INTERIOR
       OR SILL INTERIOR*

Phenocrysts- PLAGIOCLASE               (   15%)
             Size(mm):       TO 5  Morphology: ELONGATE,SUBHEDRAL
             APPROX COMP AN70,STRONGLY ZONED,NUMEROUS
             INCLUSIONS*

Groundmass - OLIVINE                   (   10%)
             Size(mm):      0.5-2  Morphology: ANHEDRAL
             MAY BE PHENOS;

             PLAGIOCLASE               (   50%)
             Size(mm):        1-2  Morphology: LATH-SHAPED

             CLINOPYROXENE             (   20%)
             Size(mm):       TO 4  Morphology: IRREGULAR
             APPROX COMP AUGITE,SUBOPHITICALLY ENCLOSES PLAG;

             OPAQUE MINERALS           (    4%)
             Size(mm):         <1  Morphology: ANHEDRAL,CUBOID,ELONGATE,

             Morphology: TRELLIS STRUCTURE
             INCLUDES MAGN + ILMENITE,APPROX COMP TITAN.MT?*

Alteration - CLAY MINERALS             (   TR%)
             Location: INTERSTITIAL
             WHAT CLAY.MIN ARE REPLACING IS NOT SEEN,COLOR IS
             GREEN*




Leg : 64    Top/Bottom Interval(mm): 1300/   0  Describer: Saunders, A.
Hole: 477A  Top of Core Depth(m)   :    55.00   Rock Type: IGNEOUS
Core:   3   Sample Midpoint(m)     :    60.80   Sect/Pc #:  4/PCE 15

ROCK = PLAG-OL PHYRIC BASALT
       OR DOLERITE;
       Texture: PORPHYRITIC,DOLERITIC-INTERGRANULAR;
       Where sampled: FLOW INTERIOR
       OR SILL INTERIOR*

Phenocrysts- OLIVINE                   (  4.0%)
             Size(mm):       TO 1  Morphology: SUBHEDRAL-ANHEDRAL

             PLAGIOCLASE               ( 20.4%)
             Size(mm):       TO 5  Morphology: ROUNDED,TABULAR
             RESORBED,ZONED*

Groundmass - OLIVINE                   (  5.3%)
             Size(mm):    0.2-0.5  Morphology: ANHEDRAL

             PLAGIOCLASE               ( 43.7%)
             Size(mm):       TO 1  Morphology: LATHS
             APPROX COMP AN60-65;

             CLINOPYROXENE             ( 18.4%)
             Size(mm):         <1  Morphology: ANHEDRAL
             APPROX COMP AUGITE,INTERGRANULAR BETWEEN PLAG;

             OPAQUE MINERALS           (  6.4%)
             Size(mm):    0.1-0.2  Morphology: EUHEDRAL-SUBHEDRAL
             INCLUDES MAGN + ILMENITE,INTERGRANULAR BETWEEN
             PLAG,PERCENTAGES OBTAINED BY POINT COUNT*

Vesicles   -
             Size(mm):       <1
             Percent:     2
             Location: RANDOM
             Filling: EMPTY
             Shape: IRREGULAR
             CAVITIES,RANDOMLY FOUND THROUGHOUT GROUNDMASS*




    

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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