Core Data from the Deep Sea Drilling Project

Leg : 18    Top/Bottom Interval(mm):    0/   0  Describer: MacLeod, N.S.
Hole: 173   Top of Core Depth(m)   :   322.50   Rock Type: IGNEOUS
Core:  37   Sample Midpoint(m)     :   322.60   Sect/Pc #: CC/

ROCK = ANDESITE
       SOURCE IS IR, SAMPLE 37A;
       Texture: GLASSY TO APHANITIC, PHYRIC;
       Where sampled: SUBAQEOUS BRECCIA OR PILLOW-BRECCIA FLOW*

Phenocrysts- PLAGIOCLASE               ( 11.5%)

             AUGITE                    (   TR%)

             HYPERSTHENE               (  0.5%)

             OLIVINE                   (    6%)

Groundmass - COMBINATION               (   78%)
             INCLUDES GLASS+MICROXLN+ALTERATION PRODUCTS OF
             INDETERMINATE MINERALS,PERCENTAGES OBTAINED BY
             MODAL ANALYSIS*

Vesicles   -
             Percent:    4
             VESICLES AND AMYGDULES*




Leg : 18    Top/Bottom Interval(mm):    0/   1  Describer: MacLeod, N.S.
Hole: 173   Top of Core Depth(m)   :   322.50   Rock Type: IGNEOUS
Core:  37   Sample Midpoint(m)     :   322.50   Sect/Pc #: CC/

ROCK = ANDESITE
       OURCE IS INITIAL REPORTS, SAMPLE 37B;
       Texture: GLASSY TO APHANITIC,PHYRIC;
       Where sampled: SUBAQEOUS BRECCIA OR PILLOW-BRECCIA FLOW*

Phenocrysts- PLAGIOCLASE               (   16%)

             AUGITE                    (    0%)

             HYPERSTHENE               (    0%)

             OLIVINE                   (    3%)

Groundmass - COMBINATION               (   78%)
             INCLUDES MICROXLN MATRIX+GLASS+ALTERATION
             PRODUCTS OF INDETERMINATE MINERALS*

Vesicles   -
             Percent:    3
             VESICLES AND AMYGDULES*




Leg : 18    Top/Bottom Interval(mm):    0/   0  Describer: MacLeod, N.S.
Hole: 173   Top of Core Depth(m)   :   328.00   Rock Type: IGNEOUS
Core:  38   Sample Midpoint(m)     :   328.10   Sect/Pc #: CC/

ROCK = ANDESITE
       SOURCE IS IR, SAMPLE 38B;
       Texture: GLASSY TO APHANITIC, PHYRIC;
       Where sampled: SUBAQUEOUS BRECCIA OR PILLOW-BRECCIA FLOW*

Phenocrysts- PLAGIOCLASE               (    9%)

             AUGITE                    (    0%)

             HYPERSTHENE               (  0.5%)

             OLIVINE                   (    6%)

Groundmass - COMBINATION               ( 79.5%)
             INCLUDES GLASS+MICROXLN+ALTERATION PRODUCTS OF
             INDETERMINATE MINERALS,PERCENTAGES OBTAINED BY
             MODAL ANALYSIS*

Vesicles   -
             Percent:    5
             VESICLES AND AMYGDULES*




Leg : 18    Top/Bottom Interval(mm):    0/   1  Describer: MacLeod, N.S.
Hole: 173   Top of Core Depth(m)   :   328.00   Rock Type: IGNEOUS
Core:  38   Sample Midpoint(m)     :   328.00   Sect/Pc #: CC/

ROCK = ANDESITE
       SOURCE IS IR, SAMPLE 38A;
       Texture: GLASSY TO APHANITIC BASALT, PHYRIC;
       Where sampled: SUBAQUEOUS BRECCIA OR PILLOW-BRECCIA FLOW*

Phenocrysts- PLAGIOCLASE               (   27%)

             AUGITE                    (   11%)

             HYPERSTHENE               (    0%)

             OLIVINE                   (    4%)

Groundmass - COMBINATION               (   57%)
             INCLUDES GLASS+MICROXLN MATRIX+ALTERATION
             PRODUCTS OF INDETERMINATE MINERALS,PERCENTAGES
             OBTAINED BY MODAL ANALYSIS*

Vesicles   -
             Percent:    1
             VESICLES AND AMYGDULES*

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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