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Core Data from the Deep Sea Drilling Project


Leg : 65    Top/Bottom Interval(mm):  300/ 310  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   138.00   Rock Type: IGNEOUS
Core:   8   Sample Midpoint(m)     :   138.31   Sect/Pc #:  1/PCE 4A

ROCK = PLAG SPARSELY PHYRIC BASALT;
       Texture: SPARSELY PORPHYRITIC,FINE- TO MEDIUM-GRAINED,
       INTERSERTAL-INTERGRANULAR,SUBVARIOLITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (    1%)
             Size(mm):      0.5-1  Morphology: SUBHEDRAL,LATHS
             FRESH*

Groundmass - OLIVINE                   (    1%)
             Size(mm):    0.1-0.3
             IDENTITY QUESTIONABLE--POSSIBLE PSEUDOMORPHS OF
             CARB AND PYRITE;

             PLAGIOCLASE               (   55%)
             Size(mm):    0.2-0.5  Morphology: SUBHEDRAL,LATHS
             FRESH;

             CLINOPYROXENE             (   30%)
             Size(mm):   0.05-0.3  Morphology: ANHEDRAL-GRANULAR
             OFTEN POORLY CRYSTALLIZED,FRESH,2VZ=30-35;

             OPAQUE MINERALS           (    5%)
             Size(mm):   0.05-0.2  Morphology: ANHEDRAL
             MOSTLY PYRITE,OFTEN ASSOCIATED WITH CARB;

             MICROCRYST GROUNDMASS     (   10%)
             INTERSTITIAL MATERIAL,DEVITRIFIED GLASS AND POORLY
             CRYSTALLIZED CPX,PARTLY REPLACED BY CARB AND
             PYRITE;

             GLASS
             DEVITRIFIED,INTERSTITIAL*

Alteration - CARBONATE
             Location: GROUNDMASS,    Replacing: OL
             Location: VESICLES
             OL? + SOME GROUNDMASS MATERIAL REPLACED BY CARB +
             PYRITE;

             PYRITE
             Location: GROUNDMASS,    Replacing: OL
             Location: VESICLES
             OL? + SOME GROUNDMASS MATERIAL REPLACED BY CARB +
             PYRITE*

Vesicles   -
             Size(mm):  0.2-0.5
             Percent:    <1
             Filling: CARB,PYRITE
             Shape: ROUND
             SOME POORLY DEVELOPED SEGREGATION VESICLES*




Leg : 65    Top/Bottom Interval(mm): 1110/1130  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   138.00   Rock Type: IGNEOUS
Core:   8   Sample Midpoint(m)     :   139.12   Sect/Pc #:  1/PCE 12

ROCK = APHYRIC BASALT;
       Texture: APHYRIC,FINE- TO MEDIUM-GRAINED,INTERSERTAL-
       SUBOPHITIC,SLIGHTLY OPHIMOTTLED*

Groundmass - OLIVINE                   (  3-4%)
             Size(mm):    0.1-0.2  Morphology: SUBHEDRAL
             COMPLETELY REPLACED BY SMEC AND MINOR CARB;

             PLAGIOCLASE               (   50%)
             Size(mm):      0.3-1  Morphology: SUBHEDRAL,LATHS
             FRESH;

             CLINOPYROXENE             (   30%)
             Size(mm):    0.1-0.3  Morphology: ANHEDRAL
             FRESH,2VZ=40;

             MAGNETITE                 (    3%)
             Size(mm):  0.01-0.08  Morphology: EUHEDRAL-SUBHEDRAL
             MOSTLY IN INTERSTITIAL PATCHES;

             CRYPTOCRYSTALLINE         (10-15%)
             INTERSTITIAL MATERIAL,PARTLY REPLACED BY SMEC*

Alteration - SMECTITE
             Location: INTERSTITIAL,  Replacing: OL
             Location: VESICLES
             OL + SOME INTERSTITIAL MATERIAL ALTERED TO SMEC;

             CARBONATE
             Location: VESICLES
             VESICLES FILLED WITH SMEC + CARB*

Vesicles   -
             Size(mm):      0.5
             Percent:     2
             Filling: SMEC,CARB
             Shape: ROUND
             MANY WITH SEGREGATION LENSES*




Leg : 65    Top/Bottom Interval(mm):  570/ 580  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   140.50   Rock Type: IGNEOUS
Core:   9   Sample Midpoint(m)     :   141.08   Sect/Pc #:  1/PCE 4

ROCK = PLAG SPARSELY PHYRIC BASALT;
       Texture: SPARSELY PORPHYRITIC,MEDIUM-GRAINED,INTERSERTAL-
       SUBOPHITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (    1%)
             Size(mm):      1-1.5  Morphology: EUHEDRAL
             FRESH*

Groundmass - OLIVINE                   (    3%)
             Size(mm):    0.1-0.3  Morphology: SUBHEDRAL
             COMPLETELY REPLACED BY SMEC;

             PLAGIOCLASE               (   50%)
             Size(mm):    0.2-0.7  Morphology: SUBHEDRAL,LATHS
             FRESH;

             CLINOPYROXENE             (35-40%)
             Size(mm):    0.1-0.3  Morphology: ANHEDRAL
             FRESH,2VZ=40;

             MAGNETITE                 (    3%)
             Size(mm):   0.05-0.1  Morphology: SUBHEDRAL

             MICROCRYST GROUNDMASS     ( 5-10%)
             INTERSTITIAL MATERIAL,GLASSY,PARTLY REPLACED BY
             SMEC*

Alteration - SMECTITE
             Location: INTERSTITIAL,  Replacing: OL
             Location: VESICLES
             OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC*

Vesicles   -
             Size(mm):    0.2-1
             Percent:     1
             Filling: SMEC
             Shape: ROUND
             FILLED WITH OLIVE-GREEN SMEC*




Leg : 65    Top/Bottom Interval(mm):  490/ 500  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   140.50   Rock Type: IGNEOUS
Core:   9   Sample Midpoint(m)     :   144.00   Sect/Pc #:  3/PCE 8

ROCK = APHYRIC BASALT;
       Texture: APHYRIC,FINE-GRAINED,INTERSERTAL-INTERGRANULAR*

Groundmass - OLIVINE                   (  2-3%)
             Size(mm):    0.2-0.5  Morphology: SUBHEDRAL
             REPLACED BY SMEC;

             PLAGIOCLASE               (   45%)
             Size(mm):    0.2-0.5  Morphology: SUBHEDRAL,LATHS
             FRESH;

             CLINOPYROXENE             (   35%)
             Size(mm):    0.1-0.3  Morphology: ANHEDRAL
             FRESH,2VZ=40;

             MAGNETITE                 (    3%)
             Size(mm):   0.02-0.1  Morphology: SUBHEDRAL
             MOSTLY IN INTERSTITIAL PATCHES;

             CRYPTOCRYSTALLINE         (   15%)
             INTERSTITIAL MATERIAL,GLASSY-CRYPTXLN,MOSTLY
             REPLACED BY SMEC*

Alteration - SMECTITE
             Location: INTERSTITIAL,  Replacing: OL
             Location: VESICLES
             OL + MOST INTERSTITIAL MATERIAL REPLACED BY SMEC*

Vesicles   -
             Size(mm):   TO 0.5
             Percent:    <1
             Filling: SMEC
             Shape: ROUND




Leg : 65    Top/Bottom Interval(mm):  700/ 720  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   150.50   Rock Type: IGNEOUS
Core:  10   Sample Midpoint(m)     :   152.71   Sect/Pc #:  2/PCE 5D

ROCK = APHYRIC BASALT;
       Texture: APHYRIC,MEDIUM-GRAINED,INTERSERTAL-
       INTERGRANULAR*

Phenocrysts- OLIVINE                   (   <1%)
             Size(mm):        2-4  Morphology: SUBHEDRAL
             PARTLY REPLACED BY SMEC;

             PLAGIOCLASE               (   <1%)
             Size(mm):          1  Morphology: SUBHEDRAL
             FRESH,IN SMALL CLOTS WITH OL*

Groundmass - OLIVINE                   (  2-3%)
             Size(mm):    0.1-0.5  Morphology: SUBHEDRAL
             REPLACED BY SMEC;

             PLAGIOCLASE               (   50%)
             Size(mm):      0.2-1  Morphology: SUBHEDRAL,LATHS
             FRESH;

             CLINOPYROXENE             (   35%)
             Size(mm):    0.1-0.3  Morphology: ANHEDRAL
             FRESH,2VZ=35-40;

             MAGNETITE                 (    3%)
             Size(mm):   0.03-0.1  Morphology: SUBHEDRAL
             MOSTLY IN INTERSTITIAL PATCHES;

             MICROCRYST GROUNDMASS     (   10%)
             INTERSTITIAL MATERIAL,MICROXLN FEL + CPX + SILICA
             + APATITE,PARTLY REPLACED BY SMEC;

             FELDSPAR
             MICROXLN,INTERSTITIAL;

             SILICA
             MICROXLN,INTERSTITIAL;

             APATITE
             MICROXLN,INTERSTITIAL*

Alteration - SMECTITE
             Location: INTERSTITIAL,  Replacing: OL
             Location: VESICLES
             OL + INTERSTITIAL MATERIAL PARTLY REPLACED BY
             SMEC*

Vesicles   -
             Size(mm):  0.2-0.5
             Percent:    <1
             Filling: SMEC
             Shape: ROUND




Leg : 65    Top/Bottom Interval(mm):  170/ 190  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   150.50   Rock Type: IGNEOUS
Core:  10   Sample Midpoint(m)     :   153.68   Sect/Pc #:  3/PCE 2C

ROCK = APHYRIC BASALT;
       Texture: APHYRIC,FINE-GRAINED,INTERGRANULAR;
       Where sampled: FLOW INTERIOR*

Phenocrysts- OLIVINE                   (   TR%)
             Size(mm):       TO 1  Morphology: SUBHEDRAL
             REPLACED BY SMEC;

             PLAGIOCLASE               (   TR%)
             Size(mm):      0.5-1  Morphology: SUBHEDRAL
             FRESH*

Groundmass - OLIVINE                   (    1%)
             Size(mm):    0.1-0.2  Morphology: SUBHEDRAL
             IDENTITY QUESTIONABLE--SUBHEDRAL PSEUDOMORPHS
             OF SMEC;

             PLAGIOCLASE               (   50%)
             Size(mm):    0.2-0.5  Morphology: SUBHEDRAL,LATHS
             FRESH;

             CLINOPYROXENE             (   40%)
             Size(mm):    0.1-0.2  Morphology: ANHEDRAL
             FRESH,2VZ=40;

             MAGNETITE                 (  2-3%)
             Size(mm):   0.05-0.1  Morphology: SUBHEDRAL-ANHEDRAL

             CRYPTOCRYSTALLINE         (    5%)
             INTERSTITIAL MATERIAL,CRYPTXLN MATERIAL WITH SOME
             APATITE,REPLACED BY SMEC;

             APATITE
             CRYPTXLN MATERIAL HAS SOME APATITE,INTERSTITIAL*

Alteration - SMECTITE
             Location: INTERSTITIAL,  Replacing: OL
             Location: VESICLES
             OL + INTERSTITIAL MATERIAL REPLACED BY SMEC;

             OPAL
             Location: GROUNDMASS
             MINOR OPAL? IN GROUNDMASS*

Vesicles   -
             Size(mm):      0.3
             Percent:     1
             Filling: SMEC
             Shape: ROUND




Leg : 65    Top/Bottom Interval(mm): 1010/1030  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   150.50   Rock Type: IGNEOUS
Core:  10   Sample Midpoint(m)     :   154.52   Sect/Pc #:  3/PCE 13

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

Phenocrysts- OLIVINE                   (    5%)
             Size(mm):    0.3-0.5  Morphology: SUBHEDRAL-EUHEDRAL
             COMPLETELY REPLACED BY SMEC;

             PLAGIOCLASE               (   15%)
             Size(mm):    0.5-1.5  Morphology: SUBHEDRAL,LATHS,ACICULAR
             SERIATE,SUBHEDRAL LATHS AND ACICULAR XTLS,FRESH*

Groundmass - OLIVINE                   (    1%)
             Size(mm):   0.05-0.1  Morphology: SUBHEDRAL
             REPLACED BY SMEC;

             PLAGIOCLASE               ( 5-10%)
             Size(mm):    0.2-0.5  Morphology: ACICULAR
             FRESH;

             MAGNETITE                 (  2-3%)
             Morphology: GRANULES
             MINUTE GRANULES IN GROUNDMASS;

             MICROCRYST GROUNDMASS     (70-75%)
             INTERSTITIAL MATERIAL,QUENCH MIXTURE OF CPX + MAGN
             + PLAG,MOSTLY FRESH*

Alteration - SMECTITE
             Location: VESICLES,
             Location: GROUNDMASS
             OL + SOME GROUNDMASS MATERIAL REPLACED BY SMEC,
             VESICLES ARE OPEN OR FILLED WITH SMEC*

Vesicles   -
             Size(mm):    0.5-1
             Percent:   1-2
             Filling: EMPTY,SMEC
             Shape: ROUND-

             Shape: IRREGULAR
             OPEN OR FILLED WITH SMEC*




Leg : 65    Top/Bottom Interval(mm): 1330/1350  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   159.50   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   160.84   Sect/Pc #:  1/PCE 13B

ROCK = PLAG-OL PHYRIC BASALT;
       Texture: PORPHYRITIC,QUENCH-INTERSERTAL;
       Where sampled: FLOW INTERIOR*

Phenocrysts- OLIVINE                   (    1%)
             Size(mm):        0.5  Morphology: SUBHEDRAL
             PARTLY REPLACED BY SMEC,2VX=88;

             PLAGIOCLASE               (   10%)
             Size(mm):      0.5-2  Morphology: SUBHEDRAL,LATHS
             SERIATE,SUBHEDRAL LATHS,FRESH*

Groundmass - OLIVINE                   (    2%)
             Size(mm):    0.2-0.4  Morphology: SUBHEDRAL
             PARTLY REPLACED BY SMEC;

             PLAGIOCLASE               (   45%)
             Size(mm):    0.2-0.5  Morphology: SUBHEDRAL
             FRESH;

             CLINOPYROXENE             (   30%)
             Size(mm):   0.05-0.2  Morphology: SHEAVES,GRANULES
             POORLY CRYSTALLIZED SHEAVES AND GRANULES,FRESH;

             MAGNETITE                 (    2%)
             Morphology: GRANULES
             MINUTE GRANULES IN INTERSTITIAL PATCHES;

             CRYPTOCRYSTALLINE         (   10%)
             INTERSTITIAL MATERIAL,GLASSY TO CRYPTXLN,PARTLY
             REPLACED BY SMEC*

Alteration - SMECTITE
             Location: INTERSTITIAL,  Replacing: OL
             Location: VESICLES
             SOME OL + INTERSTITIAL MATERIAL REPLACED BY SMEC*

Vesicles   -
             Size(mm):  0.2-0.3
             Percent:    <1
             Filling: SMEC
             Shape: ROUND




Leg : 65    Top/Bottom Interval(mm): 1070/1090  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   168.50   Rock Type: IGNEOUS
Core:  12   Sample Midpoint(m)     :   169.58   Sect/Pc #:  1/PCE 11

ROCK = PLAG MODERATELY PHYRIC BASALT;
       Texture: MODERATELY PORPHYRITIC,MEDIUM-GRAINED,
       INTERSERTAL-SUBOPHITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (    5%)
             Size(mm):      0.5-3  Morphology: SUBHEDRAL
             FRESH*

Groundmass - OLIVINE                   (  5-7%)
             Size(mm):    0.1-0.5  Morphology: SUBHEDRAL
             PARTLY REPLACED BY SMEC,2VX=88;

             PLAGIOCLASE               (   45%)
             Size(mm):    0.2-0.5  Morphology: SUBHEDRAL
             FRESH;

             CLINOPYROXENE             (   35%)
             Size(mm):    0.2-0.3  Morphology: ANHEDRAL
             FRESH,2VZ=40;

             MAGNETITE                 (    3%)
             Morphology: GRANULES
             MINUTE GRANULES,MOSTLY IN INTERSTITIAL PATCHES;

             CRYPTOCRYSTALLINE         (    5%)
             INTERSTITIAL MATERIAL,PARTLY REPLACED BY SMEC*

Alteration - SMECTITE
             Location: INTERSTITIAL,  Replacing: OL
             Location: VESICLES
             SOME OL + INTERSTITIAL MATERIAL REPLACED BY SMEC,
             VESICLES RIMMED WITH SMEC AND FILLED WITH CARB;

             CARBONATE
             Location: VESICLES
             VESICLES RIMMED WITH SMEC AND FILLED WITH CARB*

Vesicles   -
             Size(mm):  0.2-0.3
             Percent:     1
             Filling: SMEC,CARB
             Shape: ROUND
             RIMMED WITH SMEC AND FILLED WITH CARB*




Leg : 65    Top/Bottom Interval(mm):  490/ 500  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   168.50   Rock Type: IGNEOUS
Core:  12   Sample Midpoint(m)     :   170.50   Sect/Pc #:  2/PCE 6

ROCK = PLAG-OL-CPX MODERATELY PHYRIC BASALT;
       Texture: MODERATELY PORPHYRITIC,QUENCH;
       Where sampled: FLOW INTERIOR*

Phenocrysts- OLIVINE                   (  2-3%)
             Size(mm):     TO 0.5  Morphology: EUHEDRAL-SUBHEDRAL
             ALTERED TO SMEC;

             PLAGIOCLASE               (    5%)
             Size(mm):      0.5-1  Morphology: SUBHEDRAL,LATHS
             FRESH

             CLINOPYROXENE             (  2-3%)
             Size(mm):    0.3-0.6  Morphology: ANHEDRAL
             FRESH,EITHER AS SINGLE XTLS OR IN CLOTS INTERGROWN
             WITH PLAG,2VZ=35;

Groundmass - MICROCRYST GROUNDMASS     (   90%)
             QUENCHED GROUNDMASS,CONSISTS OF FINE MAGN GRAINS
             IN POORLY CRYSTALLIZED MIXTURE OF CPX AND PLAG IN
             RADIATING SHEAVES,SOME SMALL GLASSY PATCHES PARTLY
             REPLACED BY SMEC;

             MAGNETITE
             FINE GRAINS;

             CLINOPYROXENE
             POORLY CRYSTALLIZED;

             PLAGIOCLASE
             Morphology: RADIATING SHEAVES
             POORLY CRYSTALLIZED*

Alteration - SMECTITE
             Location: INTERSTITIAL,  Replacing: OL
             Location: VESICLES
             OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC*

Vesicles   -
             Size(mm):   TO 0.5
             Percent:    <1
             Filling: SMEC
             Shape: ROUND-

             Shape: IRREGULAR




Leg : 65    Top/Bottom Interval(mm):  800/ 840  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   168.50   Rock Type: IGNEOUS
Core:  12   Sample Midpoint(m)     :   170.82   Sect/Pc #:  2/PCE 10

ROCK = PLAG MODERATELY PHYRIC BASALT;
       Texture: MODERATELY PORPHYRITIC,FINE-GRAINED,INTERSERTAL-
       QUENCH*

Phenocrysts- PLAGIOCLASE               (    3%)
             Size(mm):    0.5-1.5  Morphology: SUBHEDRAL-EUHEDRAL
             ZONED,FRESH*

Groundmass - OLIVINE                   (    2%)
             Size(mm):    0.1-0.3  Morphology: SUBHEDRAL
             REPLACED BY SMEC;

             PLAGIOCLASE               (   45%)
             Size(mm):    0.1-0.5  Morphology: SUBHEDRAL,LATHS
             FRESH;

             CLINOPYROXENE             (30-35%)
             Size(mm):   0.05-0.2  Morphology: ANHEDRAL,SHEAVES
             OFTEN IN POORLY CRYSTALLIZED SHEAVES,FRESH,2VZ=40;

             MAGNETITE                 (    2%)
             MINUTE CRYSTALS IN INTERSTITIAL PATCHES;

             MICROCRYST GROUNDMASS     (10-15%)
             INTERSTITIAL MATERIAL,GLASSY,PARTLY REPLACED BY
             SMEC*

Alteration - SMECTITE
             Location: INTERSTITIAL,  Replacing: OL
             Location: VESICLES
             OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC*

Vesicles   -
             Size(mm):  0.1-0.3
             Percent:     1
             Filling: SMEC
             Shape: ROUND




Leg : 65    Top/Bottom Interval(mm): 1160/1170  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   168.50   Rock Type: IGNEOUS
Core:  12   Sample Midpoint(m)     :   172.67   Sect/Pc #:  3/PCE 11

ROCK = PLAG SPARSELY PHYRIC BASALT;
       Texture: SPARSELY PORPHYRITIC,MEDIUM-GRAINED,INTERSERTAL-
       SUBOPHITIC*

Phenocrysts- PLAGIOCLASE               (    1%)
             Size(mm):      1-1.5  Morphology: SUBHEDRAL
             FRESH*

Groundmass - OLIVINE                   (    3%)
             Size(mm):    0.1-0.6  Morphology: SUBHEDRAL
             REPLACED BY SMEC;

             PLAGIOCLASE               (   50%)
             Size(mm):    0.2-0.6  Morphology: SUBHEDRAL,LATHS
             FRESH;

             CLINOPYROXENE             (   40%)
             Size(mm):    0.1-0.4  Morphology: ANHEDRAL
             FRESH,2VZ=40;

             MAGNETITE                 (  1-2%)
             Size(mm):   0.02-0.1  Morphology: EUHEDRAL-SUBHEDRAL
             IN INTERSTITIAL PATCHES;

             CRYPTOCRYSTALLINE         (  5-8%)
             INTERSTITIAL MATERIAL,CRYPTXLN WITH MINOR APATITE,
             PARTLY REPLACED BY SMEC;

             APATITE
             MINOR*

Alteration - SMECTITE
             Location: INTERSTITIAL,
             Location: VESICLES
             OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC*

Vesicles   -
             Size(mm):   TO 0.3
             Percent:     1
             Filling: SMEC
             Shape: ROUND




Leg : 65    Top/Bottom Interval(mm): 1230/1250  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   177.50   Rock Type: IGNEOUS
Core:  13   Sample Midpoint(m)     :   178.74   Sect/Pc #:  1/PCE 15

ROCK = PLAG MODERATELY PHYRIC BASALT;
       Texture: MODERATELY PORPHYRITIC,FINE-GRAINED,INTERSERTAL-
       SUBOPHITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (  2-4%)
             Size(mm):      0.5-3  Morphology: SUBHEDRAL-EUHEDRAL
             OFTEN IN CLUSTERS,SOME ZONED,FRESH*

Groundmass - OLIVINE                   (  3-5%)
             Size(mm):    0.1-0.3  Morphology: SUBHEDRAL
             REPLACED BY SMEC + CARB;

             PLAGIOCLASE               (   45%)
             Size(mm):    0.2-0.5  Morphology: SUBHEDRAL,LATHS
             FRESH;

             CLINOPYROXENE             (   40%)
             Size(mm):    0.1-0.4  Morphology: ANHEDRAL
             FRESH,2VZ=40;

             MAGNETITE                 (    2%)
             Morphology: GRANULES
             MINUTE GRANULES IN INTERSTITIAL PATCHES;

             CRYPTOCRYSTALLINE         (    5%)
             INTERSTITIAL MATERIAL,PARTLY REPLACED BY SMEC AND
             CARB*

Alteration - SMECTITE
             Location: INTERSTITIAL   Replacing: OL
             OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC +
             CARB;

             CARBONATE
             Location: INTERSTITIAL   Replacing: OL
             OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC +
             CARB*

Vesicles   -
             Percent:     0




Leg : 65    Top/Bottom Interval(mm):   80/  90  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   177.50   Rock Type: IGNEOUS
Core:  13   Sample Midpoint(m)     :   180.59   Sect/Pc #:  3/PCE 1

ROCK = PLAG SPARSELY PHYRIC BASALT;
       Texture: SPARSELY PORPHYRITIC,FINE-GRAINED,INTERSERTAL-
       INTERGRANULAR;
       Where sampled: FLOW INTERIOR*

Phenocrysts- PLAGIOCLASE               (    1%)
             Size(mm):      0.5-1  Morphology: SUBHEDRAL
             FRESH,USUALLY IN CLUSTERS*

Groundmass - OLIVINE                   (  2-3%)
             Size(mm):    0.1-0.3  Morphology: SUBHEDRAL
             REPLACED BY SMEC;

             PLAGIOCLASE               (   50%)
             Size(mm):    0.2-0.5  Morphology: SUBHEDRAL,LATHS
             FRESH;

             CLINOPYROXENE             (   40%)
             Size(mm):    0.1-0.3  Morphology: ANHEDRAL
             FRESH,2VZ=40;

             MAGNETITE                 (    2%)
             Size(mm):    TO 0.05  Morphology: EUHEDRAL-SUBHEDRAL
             USUALLY IN INTERSTITIAL PATCHES;

             CRYPTOCRYSTALLINE         (    5%)
             INTERSTITIAL MATERIAL,PARTLY REPLACED BY SMEC*

Alteration - SMECTITE
             Location: INTERSTITIAL,  Replacing: OL
             Location: VESICLES
             OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC*

Vesicles   -
             Size(mm):      0.1
             Percent:    TR
             Filling: SMEC
             Shape: ROUND




Leg : 65    Top/Bottom Interval(mm):   00/  10  Describer: Robinson, P.
Hole: 482D  Top of Core Depth(m)   :   177.50   Rock Type: IGNEOUS
Core:  13   Sample Midpoint(m)     :   180.81   Sect/Pc #: CC/

ROCK = PLAG MODERATELY PHYRIC BASALT;
       Texture: MODERATELY PORPHYRITIC,QUENCH*

Phenocrysts- OLIVINE                   (   <1%)
             Size(mm):    0.4-0.7  Morphology: EUHEDRAL
             REPLACED BY SMEC;

             PLAGIOCLASE               (  3-4%)
             Size(mm):    0.5-1.5  Morphology: SUBHEDRAL,LATHS
             FRESH*

Groundmass - OLIVINE                   (    2%)
             Size(mm):   0.05-0.1  Morphology: SUBHEDRAL
             REPLACED BY SMEC;

             PLAGIOCLASE               ( 5-10%)
             Size(mm):     TO 0.4  Morphology: ACICULAR
             FRESH;

             GLASS                     (80-85%)
             BROWN,INCIPIENTLY CRYSTALLIZED WITH SHEAF
             STRUCTURE,FRESH*

Alteration - SMECTITE
             Location: VEINS,         Replacing: OL,GLASS
             Location: VESICLES
             OL + MINOR GLASS ALTERED TO SMEC,RARE VEINS AND
             FRACTURES (0.2 MM WIDE) FILLED WITH SMEC*

Vesicles   -
             Size(mm):  0.2-0.3
             Percent:     1
             Filling: SMEC
             Shape: ROUND




    

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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