Core Data from the Deep Sea Drilling Project

Leg : 86    Top/Bottom Interval(mm):  230/ 270  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   343.25   Sect/Pc #:  1/PCE 4

ROCK = PLAG-OL SP MICROPHYRIC BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: APHANITIC, SP MICROPHYRIC, INTERSERTAL,
       DEVITRIFIED BROWN GLASS;

Phenocrysts- PLAGIOCLASE
             SPARSE;

             OLIVINE
             ONE OL MICROPHENO*

Groundmass - GLASS
             INTERSERTAL, BROWN, DEVITRIFIED;

             PLAGIOCLASE               (   15%)
             Morphology: MICROLITES
             IN INTERSERTAL GLASS*




Leg : 86    Top/Bottom Interval(mm):  540/ 630  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   343.59   Sect/Pc #:  1/PCE 9

ROCK = PLAG-OL-CPX MICROPHYRIC BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: APHANITIC, INTERSERTAL MATRIX OF BROWN GLASS;

Phenocrysts- PLAGIOCLASE               (    1%)
             Size(mm):       <0.5
             MICROPHENOS;

             OLIVINE
             RARE MICROPHENOS;

             CLINOPYROXENE
             RARE MICROPHENOS*

Groundmass - GLASS
             INTERSERTAL, BROWN;

             PLAGIOCLASE               (   40%)
             Morphology: MICROLITES

             PYROXENE
             SPARSE*




Leg : 86    Top/Bottom Interval(mm): 1260/1310  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   344.29   Sect/Pc #:  1/PCE 14

ROCK = APHYRIC BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: APHANITIC, MATRIX OF BROWN GLASS;

Groundmass - GLASS
             BROWN;

             PLAGIOCLASE               (   15%)
             Morphology: MICROLITES

             OLIVINE                   (    1%)
             RELIC IN GLASS MATRIX*




Leg : 86    Top/Bottom Interval(mm):  100/ 170  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   344.64   Sect/Pc #:  2/PCE 2

ROCK = APHYRIC BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: FINE-GRAINED, EXTREMELY WEATHERED BROWN GLASS

Groundmass - GLASS
             EXTREMELY WEATHERED, BROWN;

             PLAGIOCLASE               (    5%)
             Morphology: MICROLITES

             OLIVINE                   (    1%)
             IN GLASS MATRIX*
             VESICULAR*




Leg : 86    Top/Bottom Interval(mm):  230/ 260  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   344.75   Sect/Pc #:  2/PCE 3

ROCK = PLAG SP MICROPHYRIC BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: FINE-GRAINED, SP MICROPHYRIC, MATRIX OF RED-
       BROWN GLASS;

Phenocrysts- PLAGIOCLASE
             Size(mm):       <0.5
             SPARSE, MICROPHENOS*

Groundmass - GLASS
             RED-BRWN MATRIX;

             PLAGIOCLASE               (    5%)
             IN GLASS MATRIX*




Leg : 86    Top/Bottom Interval(mm):  490/ 530  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   345.01   Sect/Pc #:  2/PCE 6

ROCK = APHYRIC BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: FINE-GRAINED, INTERSERTAL MATRIX, APHYRIC;

Groundmass - GLASS
             BROWN INTERSERTAL MATRIX;

             PLAGIOCLASE               (   10%)
             Morphology: MICROLITES
             IN GLASS MATRIX*




Leg : 86    Top/Bottom Interval(mm):  830/ 880  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   345.36   Sect/Pc #:  2/PCE 9

ROCK = PLAG MOD PHYRIC BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: APHANITIC, DEVITRIFIED GLASSY MATRIX;

Phenocrysts- PLAGIOCLASE               (    4%)
             Size(mm):        0.5

Groundmass - GLASS
             RED, DEVITRIFIED MATRIX;

             PLAGIOCLASE               (    5%)
             Morphology: MICROLITES

             OLIVINE
             SCATTERED RELICT MICROLITES*

Alteration - CALCITE
             Location: IN VEINS




Leg : 86    Top/Bottom Interval(mm):  930/1030  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   345.48   Sect/Pc #:  2/PCE 11

ROCK = PLAG SP MICROPHYRIC BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: APHANITIC, MATRIX WIATHERED BROWN GLASS;

Phenocrysts- PLAGIOCLASE
             SP MICRO PHENOS*

Groundmass - GLASS
             WEATHERED, BROWN;

             PLAGIOCLASE
             Morphology: MICROLITES
             VESICULAR*




Leg : 86    Top/Bottom Interval(mm):   30/  70  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   346.05   Sect/Pc #:  3/PCE 1

ROCK = PLAG-OL MOD MICROPHYRIC BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: APHANITIC, INTERSERTAL, MOD MICROPHYRIC;

Phenocrysts- PLAGIOCLASE               (    5%)
             SP MICRO PHENOS;

             OLIVINE                   (   <1%)
             MICROPHENOS, NOW ALTERED*

Groundmass - GLASS
             BROWN MATRIX*




Leg : 86    Top/Bottom Interval(mm):  480/ 580  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   346.53   Sect/Pc #:  3/PCE 5

ROCK = PLAG-CPX PHYRIC BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: APHANITIC, PHYRIC;

Groundmass - COMBINATION               (   70%)
             Morphology: MICROLITES
             INCLUDES PLAG+CPX;

             GLASS
             BROWN*




Leg : 86    Top/Bottom Interval(mm):  660/ 710  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   346.69   Sect/Pc #:  3/PCE 6

ROCK = PLAG-CPX SP MICROPHYRIC BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: APHANITIC, SP MICROPHYRIC;

Phenocrysts- PLAGIOCLASE               (    1%)
             MICROPHENOS;

Groundmass - PLAGIOCLASE
             Morphology: MICROLITES

             CLINOPYROXENE
             Morphology: MICROLITES
             RARE*




Leg : 86    Top/Bottom Interval(mm): 1040/1110  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   347.08   Sect/Pc #:  3/PCE 7

ROCK = BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: FINE-GRAINED, INTERSERTAL;

Groundmass - GLASS
             BROWN;

             PLAGIOCLASE               (   15%)
             PERCENTAGE OF XTLS UNCERTAIN;

             CLINOPYROXENE
             RARE*




Leg : 86    Top/Bottom Interval(mm):  480/ 540  Describer: Fountain, J.C.
Hole: 581   Top of Core Depth(m)   :   343.00   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   348.01   Sect/Pc #:  4/PCE 4

ROCK = BASALT
       SOURCE IS INITIAL REPORTS;
       Texture: APHANITIC, INTERSERTAL;

Groundmass - GLASS
             BROWN-GREEN MATRIX;

             COMBINATION               (   70%)
             Morphology: MICROLITES
             INCLUDES PLAG+CPX*

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.

Department of Commerce > NOAA > NESDIS > NCEI > doi:10.7289/V54M92G2