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Core Data from the Deep Sea Drilling Project


Leg : 70    Top/Bottom Interval(mm): 1000/1020  Describer: Laverne, C.
Hole: 510   Top of Core Depth(m)   :   111.50   Rock Type: IGNEOUS
Core:   8   Sample Midpoint(m)     :   114.01   Sect/Pc #:  2/PCE 48

ROCK = PLAG-OL PHYRIC BASALT;
       Texture: MOD PHYRIC,MEDIUM-GRAINED,INTERSERTAL-
       HYALO-OPHITIC
       GLASS PHASE SHOWS QUENCHED TEXTURE;
       Where sampled: FLOW INTERIOR*

Phenocrysts- OLIVINE                   (    1%)
             Size(mm):      .4X.4  Morphology: EUHEDRAL
             ALTERED;

             PLAGIOCLASE               (   12%)
             Size(mm):        5X3  Morphology: EUHEDRAL

Groundmass - PLAGIOCLASE               (   30%)
             Size(mm):    .4X.008  Morphology: MICROLITES

             CLINOPYROXENE             (   10%)
             Size(mm):        .04  Morphology: ANHEDRAL

             MAGNETITE                 (    7%)
             Size(mm):      <.008  Morphology: SKELETAL

             PLAGIOCLASE+PYROXENE      (   40%)
             Size(mm):      <.008
             SHEAF-LIKE CLUSTERS OF XTLS(DUE TO QUENCHING)*

Alteration - SMECTITE
             GREEN AND BROWN;

             IDDINGSITE
             Replacing: OL

             TALC
             Replacing: OL
             ID UNCERTAIN FOR TALC*




Leg : 70    Top/Bottom Interval(mm): 1040/1060  Describer: Schrader, E.L.
Hole: 510   Top of Core Depth(m)   :   111.50   Rock Type: IGNEOUS
Core:   8   Sample Midpoint(m)     :   114.05   Sect/Pc #:  2/PCE 48

ROCK = PLAG-OL PHYRIC BASALT;
       Texture: PHYRIC,HYALOPILITIC*

Phenocrysts- OLIVINE                   (  1-2%)
             Size(mm):      .2X.2
             ALTERED TO TALC-IDDINGSITE(?);

             PLAGIOCLASE               ( 7-10%)
             Morphology: BLOCKY-EUHEDRAL
             SIZE .6X.4-1.2X.8MM,OCCUR AS AGGREGATES*

Groundmass - PLAGIOCLASE               (20-25%)
             Size(mm):    .36X.05  Morphology: SKELETAL LATHS

             MAGNETITE                 (    8%)
             Morphology: SKELETAL

             GLASS                     (   60%)
             QUENCHED GLASS REPRESENTED BY PLUMOSE PLAG-CPX;

             PYRITE                    (    3%)
             SECONDARY VEINS AND GRAINS*

Alteration - SMECTITE                  ( 8-10%)
             Location: VOIDS+         Replacing: GLASS
             Location: SCATTERED
             OFTEN WITH PYRITES;

             TALC                      (  1-2%)
             Replacing: OL
             TALC-IDDINGSITE,PSEUDOMORPHS AFTER OL*

Vesicles   -
             Size(mm):     0




Leg : 70    Top/Bottom Interval(mm):  140/ 160  Describer: Laverne, C.
Hole: 510   Top of Core Depth(m)   :   111.50   Rock Type: IGNEOUS
Core:   8   Sample Midpoint(m)     :   114.33   Sect/Pc #: CC/PCE 51

ROCK = PLAG MOD PHYRIC BASALT;
       Texture: HYALO-OPHITIC-HYALOPILITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (    7%)
             Size(mm):     1.2X.8  Morphology: EUHEDRAL

Groundmass - OLIVINE                   (    6%)
             Size(mm):    .12X.01  Morphology: SUBHEDRAL
             FRESH OR COMPLETELY ALTERED;

             PLAGIOCLASE               (   20%)
             Size(mm):    .25X.01  Morphology: MICROLITES

             MAGNETITE                 (    3%)
             Size(mm):      <.008  Morphology: SKELETAL

             CLINOPYROXENE+PLAGIOCLASE (   55%)
             MATURE SHEAF TEXTURE*

Alteration - IDDINGSITE                (    3%)
             Replacing: OL
             IDDINGSITE+FE-OXIDES*

Vesicles   -
             Percent:     3
             Location: GATHERED IN
             Filling: SMEC
             Shape: IRREGULAR

             Location: SOME AREAS




Leg : 70    Top/Bottom Interval(mm):  500/ 520  Describer: Schrader, E.L.
Hole: 510   Top of Core Depth(m)   :   114.50   Rock Type: IGNEOUS
Core:   9   Sample Midpoint(m)     :   115.01   Sect/Pc #:  1/PCE 58

ROCK = PLAG-OL MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,VARIOLITIC-HYALOPILITIC;
       Where sampled: NEXT TO GLASSY MARGIN*

Phenocrysts- OLIVINE                   (   <1%)
             Size(mm):      .5X.5  Morphology: SUBHEDRAL
             OCCUR WITH PLAG IN AGGREGATES,PLUCKED OUT;

             PLAGIOCLASE               (  2-4%)
             Size(mm):        1X2  Morphology: LATHS
             OCCUR AS AGGREGATES*

Groundmass - OLIVINE                   (  3-4%)
             Size(mm):    .06X.06  Morphology: ANHEDRAL

             PLAGIOCLASE               (   10%)
             Size(mm):     .6X.08  Morphology: SKELETAL LATHS

             CLINOPYROXENE             (  3-4%)
             Size(mm):    .02X.02  Morphology: ANHEDRAL
             OL,PLAG AND CPX MAY OCCUR AS INDIVIDUAL XTLS OR AS
             GLOMEROCRYSTS;

             MAGNETITE                 (  3-4%)
             Morphology: SKELETAL

             GLASS                     (   75%)
             SEEN AS VARIOLITES AND MICROLITES*

Alteration - PYRITE                    (    1%)
             Location: SCATTERED      Replacing: GLASS+MAGN
             ANHEDRA-SUBHEDRA*

Vesicles   -
             Size(mm):       .3
             Percent:     2




Leg : 70    Top/Bottom Interval(mm):  760/ 790  Describer: Laverne, C.
Hole: 510   Top of Core Depth(m)   :   114.50   Rock Type: IGNEOUS
Core:   9   Sample Midpoint(m)     :   115.28   Sect/Pc #:  1/PCE 61

ROCK = PLAG PHYRIC BASALT;
       Texture: PHYRIC,MEDIUM-GRAINED,HYALOPILITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (   20%)
             Size(mm):        2X1  Morphology: EUHEDRAL

Groundmass - OLIVINE                   (    7%)
             Size(mm):    .08X.08  Morphology: EUHEDRAL-SUBHEDRAL
             ID UNCERTAIN FOR OL,TOTALLY ALTERED BY A PALE
             BROWN CLAY;

             PLAGIOCLASE               (   20%)
             Size(mm):    .25X.15  Morphology: MICROLITES

             CLINOPYROXENE             (    2%)
             Size(mm):        .04  Morphology: ANHEDRAL
             INTERSTITIAL TO PLAG;

             MAGNETITE                 (    5%)
             Size(mm):        .01  Morphology: SKELETAL

             PYROXENE+PLAGIOCLASE      (   45%)
             Size(mm):      <.008
             SHEAF-LIKE CLUSTERS OF XTLS(IMMATURE VARIOLITIC
             TEXTURE)*

Alteration - CLAY MINERALS
             Replacing: OL
             PALE BROWN*




Leg : 70    Top/Bottom Interval(mm): 1220/1250  Describer: Laverne, C.
Hole: 510   Top of Core Depth(m)   :   114.50   Rock Type: IGNEOUS
Core:   9   Sample Midpoint(m)     :   115.74   Sect/Pc #:  1/PCE 67

ROCK = PLAG MOD PHYRIC BASALT;
       Texture: MEDIUM-GRAINED,MOD PHYRIC,HYALOPILITIC,
       SUBOPHITIC
       JUXTAPOSITION OF HYALOPILITIC AND SUBOPHITIC
       AREAS;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (    7%)
             Morphology: EUHEDRAL
             2 SIZES-1X.5 AND .5X.2MM*

Groundmass - OLIVINE                   (    6%)
             Size(mm):     .16X.1  Morphology: ANHEDRAL-SUBHEDRAL
             FRESH;

             PLAGIOCLASE               (   35%)
             Size(mm):     .4X.01  Morphology: MICROLITES

             CLINOPYROXENE             (    3%)
             Size(mm):    .1X.005  Morphology: ANHEDRAL

             MAGNETITE                 (    4%)
             Size(mm):        .01  Morphology: SKELETAL

             GLASS                     (   45%)
             MATURE SHEAF TEXTURE*




Leg : 70    Top/Bottom Interval(mm):  520/ 550  Describer: Laverne, C.
Hole: 510   Top of Core Depth(m)   :   114.50   Rock Type: IGNEOUS
Core:   9   Sample Midpoint(m)     :   116.54   Sect/Pc #:  2/PCE 78

ROCK = PLAG PHYRIC BASALT;
       Texture: MEDIUM-GRAINED,PHYRIC,HYALO-OPHITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (   12%)
             Size(mm):     2.0X.8  Morphology: EUHEDRAL

Groundmass - OLIVINE                   (    8%)
             Size(mm):    .12X.12  Morphology: EUHEDRAL
             COMPLETELY ALTERED;

             PLAGIOCLASE               (   22%)
             Size(mm):    .25X.01  Morphology: MICROLITES

             CLINOPYROXENE             (    3%)
             Size(mm):    .04X.02  Morphology: ANHEDRAL
             INTERSTITIAL TO PLAG;

             MAGNETITE                 (    5%)
             Size(mm):      <.008  Morphology: SKELETAL

             GLASS                     (   50%)
             MATURE SHEAF TEXTURE*

Alteration - TALC                      (    8%)
             Replacing: OL
             TALC+IDDINGSITE?;

             SMECTITE                  (    2%)
             Location: CRACKS OR
             Location: NEAR OL




Leg : 70    Top/Bottom Interval(mm):  800/ 830  Describer: Schrader, E.L.
Hole: 510   Top of Core Depth(m)   :   114.50   Rock Type: IGNEOUS
Core:   9   Sample Midpoint(m)     :   116.82   Sect/Pc #:  2/PCE 83

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

Phenocrysts- OLIVINE                   (    1%)
             Size(mm):     .18X.2  Morphology: SUBHEDRAL
             ALTERED TO TALC+IDDINGSITE;

             PLAGIOCLASE               (   10%)
             Morphology: BLOCKY-LATHY
             SIZE .8X.7-1.5X1.2MM*

Groundmass - PLAGIOCLASE               (   30%)
             Size(mm):     .7X.08  Morphology: SKELETAL LATHS

             MAGNETITE                 (    7%)
             Size(mm):   .005-.01  Morphology: SKELETAL

             GLASS                     (   50%)
             GLASS REPRESENTED BY PLUMOSE PLAG-CPX GROUPS*

Alteration - TALC
             Replacing: OL
             TALC-IDDINGSITE(?),PSEUDOMORPHS AFTER OL;

             CLAY MINERALS             (   10%)
             Location: VOIDS+VEINS+   Replacing: GLASS
             Location: SCATTERED

             FERROUS OXIDE             (    1%)
             Location: SMEC VEINS

Vesicles   -
             Percent:     0




Leg : 70    Top/Bottom Interval(mm): 1200/1230  Describer: Laverne, C.
Hole: 510   Top of Core Depth(m)   :   114.50   Rock Type: IGNEOUS
Core:   9   Sample Midpoint(m)     :   117.22   Sect/Pc #:  2/PCE 87

ROCK = PLAG-OL MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,MEDIUM-GRAINED,HYALO-OPHITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- OLIVINE                   (    1%)
             Size(mm):      .7X.3  Morphology: EUHEDRAL
             COMPLETELY ALTERED;

             PLAGIOCLASE               (    7%)
             Size(mm):     .7X.25  Morphology: EUHEDRAL

Groundmass - OLIVINE                   (    6%)
             Size(mm):    .15X.10  Morphology: SUBHEDRAL
             COMPLETELY ALTERED;

             PLAGIOCLASE               (   30%)
             Size(mm):    .32X.01  Morphology: MICROLITES

             CLINOPYROXENE             (    2%)
             Size(mm):   .025X.01  Morphology: ANHEDRAL

             MAGNETITE                 (    4%)
             Size(mm):      <.008  Morphology: SKELETAL

             GLASS                     (   55%)
             MATURE SHEAF TEXTURE*

Alteration - SMECTITE
             Location: CRACKS         Replacing: GLASS

             IDDINGSITE                (    7%)
             Replacing: OL
             IDDINGSITE+FE-HYDROXIDES*

Vesicles   -
             Size(mm):      .01
             Percent:     1
             Location: SCATTERED
             Filling: GREEN SMEC
             Shape: IRREGULAR
             VOIDS,NOT VESICLES*




Leg : 70    Top/Bottom Interval(mm):  390/ 420  Describer: Laverne, C.
Hole: 510   Top of Core Depth(m)   :   114.50   Rock Type: IGNEOUS
Core:   9   Sample Midpoint(m)     :   117.91   Sect/Pc #:  3/PCE 97

ROCK = PLAG MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,MEDIUM-GRAINED,HYALO-OPHITIC-
       HYALOPILITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (    7%)
             Size(mm):     1.2X.6  Morphology: EUHEDRAL

Groundmass - OLIVINE                   (    3%)
             Size(mm):     .2X.05  Morphology: SUBHEDRAL

             PLAGIOCLASE               (   20%)
             Size(mm):    .8X.008  Morphology: MICROLITES

             MAGNETITE                 (    4%)
             Size(mm):      <.008  Morphology: SKELETAL

             PLAGIOCLASE+PYROXENE      (   64%)
             Size(mm):      <.008
             SHEAF-LIKE CLUSTERS OF XTLS(DUE TO QUENCHING)*

Alteration - SMECTITE                  (    1%)
             Location: SCATTERED      Replacing: GLASS
             IN AREAS <.008MM;

             IDDINGSITE                (    1%)
             Location: NEAR OR IN
             Location: CRACKS OF OL
             Location: XTLS
             ID UNCERTAIN FOR IDDINGSITE*




Leg : 70    Top/Bottom Interval(mm):  530/ 590  Describer: Schrader, E.L.
Hole: 510   Top of Core Depth(m)   :   114.50   Rock Type: IGNEOUS
Core:   9   Sample Midpoint(m)     :   118.06   Sect/Pc #:  3/PCE 100

ROCK = PLAG-OL PHYRIC BASALT;
       Texture: PHYRIC,VARIOLITIC;
       Where sampled: GLASSY MARGIN*

Phenocrysts- OLIVINE                   (  <<1%)
             Size(mm):    .24X.24  Morphology: EUHEDRAL

             PLAGIOCLASE               ( 8-10%)
             Size(mm):    1.3X.70  Morphology: BLOCKY EUHEDRAL
             IN AGGREGATES*

Groundmass - OLIVINE                   (  3-5%)
             Size(mm):    .06X.06  Morphology: EUHEDRAL

             PLAGIOCLASE               ( 7-10%)
             Size(mm):    .36X.02  Morphology: ACICULAR

             MAGNETITE                 (  3-4%)
             Morphology: SKELETAL

             GLASS                     (   70%)
             REPRESENTED BY VARIOLITES*

Vesicles   -
             Size(mm):     0




Leg : 70    Top/Bottom Interval(mm):   40/  60  Describer: Schrader, E.L.
Hole: 510   Top of Core Depth(m)   :   123.00   Rock Type: IGNEOUS
Core:  10   Sample Midpoint(m)     :   123.05   Sect/Pc #:  1/PCE 107

ROCK = PLAG-OL MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,HYALOPILITIC-VARIOLITIC;
       Where sampled: NEXT TO GLASSY MARGIN*

Phenocrysts- OLIVINE                   (  <<1%)
             Size(mm):      .4X.4  Morphology: ANHEDRAL
             OFTEN IN AGGREGATES OF PLAG;

             PLAGIOCLASE               (    2%)
             Size(mm):     .6X.15  Morphology: LATHS
             OFTEN IN AGGREGATES*

Groundmass - OLIVINE                   (    5%)
             Size(mm):    .06X.06  Morphology: ANHEDRAL

             PLAGIOCLASE               (   15%)
             Size(mm):    .36X.06  Morphology: SKELETAL LATHS

             CLINOPYROXENE             (    5%)
             Size(mm):    .04X.04  Morphology: ANHEDRAL

             MAGNETITE                 (  5-8%)
             Morphology: SKELETAL

             GLASS                     (   70%)
             SEEN AS MATURE SHEAFS AND PLUMOSE CPX,PLAG AND OL*

Alteration - PYRITE                    (  3-5%)
             Location: VEIN+GNDMASS   Replacing: MAGN+GLASS
             ANHEDRAL*

Vesicles   -
             Size(mm):       .5
             Percent:     1
             Filling: EMPTY
             Shape: OVOID




Leg : 70    Top/Bottom Interval(mm):  140/ 180  Describer: Schrader, E.L.
Hole: 510   Top of Core Depth(m)   :   123.00   Rock Type: IGNEOUS
Core:  10   Sample Midpoint(m)     :   123.16   Sect/Pc #:  1/PCE 108

ROCK = PLAG-OL MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,VARIOLITIC;
       Where sampled: GLASSY MARGIN*

Phenocrysts- OLIVINE                   (  <<1%)
             Size(mm):      .3X.2  Morphology: SUBHEDRAL
             SOME ALTERED,MOST FRESH;

             PLAGIOCLASE               (  4-7%)
             Size(mm):     .6X.12  Morphology: SUBEQUANT-EUHEDRAL LATHS

Groundmass - OLIVINE                   (  5-8%)
             Size(mm):      .1X.1  Morphology: SKELETAL-BLOCKY

             PLAGIOCLASE               ( 8-10%)
             Size(mm):    .36X.08  Morphology: SKELETAL LATHS

             MAGNETITE                 (    5%)
             Size(mm):       .012  Morphology: SKELETAL

             GLASS                     (70-80%)
             REPRESENTED BY VARIOLITES-SOME MORE COARSELY
             XTLLINE THAN OTHERS,CPX+PLAG VARIOLITES*

Alteration - OLIVINE                   (  <<1%)
             Location: OL PHENOS
             INCIPIENT ALTERATION OF OL*

Vesicles   -
             Percent:     0




Leg : 70    Top/Bottom Interval(mm):  730/ 750  Describer: Laverne, C.
Hole: 510   Top of Core Depth(m)   :   123.00   Rock Type: IGNEOUS
Core:  10   Sample Midpoint(m)     :   123.74   Sect/Pc #:  1/PCE 115

ROCK = PLAG MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,MEDIUM-GRAINED,INTERSERTAL
       WITH SOME AREAS OF SHEAF-LIKE INTERGROWTHS OF CPX
       AND PLAG;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (    7%)
             Size(mm):      .8X.5  Morphology: EUHEDRAL OR SUBHEDRAL LATHS

Groundmass - OLIVINE                   (    3%)
             Morphology: SUBHEDRAL

             PLAGIOCLASE               (   40%)
             Size(mm):    .3X.008  Morphology: MICROLITES

             CLINOPYROXENE             (   27%)
             Size(mm):    .08X.04  Morphology: ANHEDRAL

             MAGNETITE                 (    3%)
             Size(mm):      <.005  Morphology: SKELETAL

             PLAGIOCLASE+PYROXENE      (   20%)
             VERY SMALL XTLS DUE TO QUENCHING*

Alteration - CALCITE                   (    1%)

             SMECTITE                  (10-15%)
             Location: SCATTERED      Replacing: GLASS+FILLING VOIDS
             ID UNCERTAIN FOR BROWN SMEC*




Leg : 70    Top/Bottom Interval(mm):  360/ 390  Describer: Laverne, C.
Hole: 510   Top of Core Depth(m)   :   128.00   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   128.38   Sect/Pc #:  1/PCE 123

ROCK = PLAG PHYRIC BASALT;
       Texture: PHYRIC,FINE-GRAINED,SUBGLOMEROPHYRIC,
       HYALOPILITIC
       GROUNDMASS IS HYALOPILITIC;
       Where sampled: NEXT TO GLASSY MARGIN*

Phenocrysts- PLAGIOCLASE               (   10%)
             Size(mm):      .8X.4  Morphology: EUHEDRAL

Groundmass - OLIVINE                   (    7%)
             Size(mm):    .15X.08  Morphology: SUBHEDRAL

             PLAGIOCLASE               (    5%)
             Size(mm):    .24X.05  Morphology: MICROLITES

             CLINOPYROXENE             (    5%)
             Size(mm):    .15X.08  Morphology: EUHEDRAL
             CLUSTERS OF OL+PLAG+CPX,SOME PLAG AND OL XTLS ARE
             ALSO SCATTERED IN THE GROUNDMASS;

             MAGNETITE                 (    3%)
             Size(mm):      <.008  Morphology: SKELETAL

             GLASS                     (   60%)
             IMMATURE VARIOLITIC TEXTURE;

             PLAGIOCLASE               (    7%)
             Size(mm):   .16X.002  Morphology: MICROLITES
             NOT EQUAL TO SIZE OF MICROLITES DESCRIBED ABOVE*

Alteration - SMECTITE                  (    3%)
             Location: CRACKS         Replacing: GLASS+PARTLY OL




Leg : 70    Top/Bottom Interval(mm):  400/ 430  Describer: Laverne, C.
Hole: 510   Top of Core Depth(m)   :   128.00   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   128.42   Sect/Pc #:  1/PCE 124

ROCK = PLAG PHYRIC BASALT WITH A GLASSY RIM
       THIS IS NOT THE DESCRIPTION OF THE GLASSY MARGIN;
       Texture: PHYRIC,FINE-GRAINED,GLOMEROPHYRIC,VARIOLITIC
       VARIOLITIC GROUNDMASS;
       Where sampled: NEXT TO GLASSY MARGIN*

Phenocrysts- PLAGIOCLASE               (   10%)
             Size(mm):       2X.7  Morphology: EUHEDRAL

Groundmass - OLIVINE                   (    3%)
             Size(mm):     .15X.1  Morphology: EUHEDRAL
             SCATTERED IN THE WHOLE ROCK;

             PLAGIOCLASE               (    7%)
             Size(mm):    .4-.015  Morphology: MICROLITES

             CLINOPYROXENE             (    5%)
             Size(mm):     .15X1A  Morphology: NHEDRAL
             PLAG+CPX CLUSTERS;

             MAGNETITE                 (    2%)
             Size(mm):      <.004  Morphology: SKELETAL

             GLASS                     (   73%)
             VARIOLITIC*

Alteration - SMECTITE
             Location: CRACKS         Replacing: OL

             IDDINGSITE
             Replacing: OL
             IDDINGSITE,TALC?*




Leg : 70    Top/Bottom Interval(mm):  980/1000  Describer: Laverne, C.
Hole: 510   Top of Core Depth(m)   :   128.00   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   128.99   Sect/Pc #:  1/PCE 133

ROCK = PLAG MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,MEDIUM-GRAINED,INTERSERTAL
       WITH SOME AREAS OF SHEAF-LIKE INTERGROWTHS OF CPX
       AND PLAG;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (    8%)
             Size(mm):      1.5X1  Morphology: EUHEDRAL TWINNED

Groundmass - PLAGIOCLASE               (   36%)
             Size(mm):    .3X.008  Morphology: MICROLITES

             CLINOPYROXENE+PLAGIOCLASE (   50%)
             Size(mm):      <.008
             IN SHEAF-LIKE INTERGROWTHS;

             MAGNETITE                 (  3-4%)
             Size(mm):        .01  Morphology: SKELETAL

Alteration - CLAY MINERALS             (    2%)
             Location: VOIDS          Replacing: OL
             COLORLESS OR PALE BROWN,EUHEDRAL XTLS,OL(?)*

Vesicles   -
             Percent:     2
             Filling: COLORLESS+BROWN
             Shape: IRREGULAR

             Filling: CLAY
             VOIDS,NOT VESICLES*




Leg : 70    Top/Bottom Interval(mm):  980/1000  Describer: Schrader, E.L.
Hole: 510   Top of Core Depth(m)   :   128.00   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   128.99   Sect/Pc #:  1/PCE 133

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

Phenocrysts- OLIVINE                   (    5%)
             Size(mm):    .24X.24  Morphology: ROUNDED-EUHEDRAL
             SOME ALTERED;

             PLAGIOCLASE               (    5%)
             Size(mm):    1.7X1.2  Morphology: BLOCKY
             OL+PLAG OFTEN OCCUR IN AGGREGATES*

Groundmass - OLIVINE                   (    5%)
             Size(mm):    .05X.05  Morphology: BLOCKY

             PLAGIOCLASE               (   20%)
             Size(mm):     .08X.7  Morphology: SKELETAL-ACICULAR

             MAGNETITE                 (    5%)

             ILMENITE                  (   60%)
             REPRESENTED BY SHEAFS OF CPX+PLAG*

Alteration - IDDINGSITE                (   <1%)
             Location: OL PHENOS      Replacing: OL
             IDDINGISTE-TALC;

             SMECTITE                  ( 8-10%)
             Location: VOIDS+SOME     Replacing: GLASS
             Location: VEINS+
             Location: SCATTERED




    

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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