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NOAA/NGDC
WDC MGG Seafloor Series Vol I

Core Data from the Deep Sea Drilling Project


Leg : 12    Top/Bottom Interval(mm):  130/ 200  Describer: Aumento, F.
Hole: 117A  Top of Core Depth(m)   :   311.00   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   312.67   Sect/Pc #:  2/

ROCK = OL-PLAG PHRYRIC BASALT
       ENCODED FROM IR;
       Texture: PHRYRIC*

Phenocrysts- OLIVINE
             REPLACED BY IDDINGS + CARB;

             PLAGIOCLASE               ( RARE%)

Groundmass - PLAGIOCLASE
             Size(mm):    1.0X0.2  Morphology: LATHS
             APPROX COMP AN65,ROUGH FLOW TEXTURE;

             OLIVINE
             Morphology: GRANULAR
             ALTERED TO IDDINGS AND CARB;

             CLINOPYROXENE
             Morphology: GRANULAR

             FERROUS OXIDE

Alteration - CHLORITE
             Location: INTERSTITIAL
             DARK GREEN;

             SAUSSURITE
             Replacing: PLAG

             CARBONATE
             Location: VEINS

             CHLORITE
             Location: VEINS

             ANAL
             Location: VEINS

             NATROLITE
             Location: VEINS




Leg : 12    Top/Bottom Interval(mm):  260/ 320  Describer: Aumento, F.
Hole: 117A  Top of Core Depth(m)   :   311.00   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   312.79   Sect/Pc #:  2/

ROCK = OL-PLAG PHYRIC BASALT
       SAME AS (117A-11-2,13-20)*




Leg : 12    Top/Bottom Interval(mm):  260/ 320  Describer: Ryall, P.
Hole: 117A  Top of Core Depth(m)   :   311.00   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   312.79   Sect/Pc #:  2/

ROCK = OL-PLAG PHRYRIC BASALT*

Groundmass - MAGNETITE
             Morphology: SKELETAL
             LARGE, PALE GREY-BROWN,CLASS 1*




Leg : 12    Top/Bottom Interval(mm):  440/ 470  Describer: Aumento, F.
Hole: 117A  Top of Core Depth(m)   :   311.00   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   312.96   Sect/Pc #:  2/

ROCK = OL-PLAG PHYRIC BASALT
       SAME AS (117A-11-2,13-20)*




Leg : 12    Top/Bottom Interval(mm):  470/ 520  Describer: Aumento, F.
Hole: 117A  Top of Core Depth(m)   :   311.00   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   313.00   Sect/Pc #:  2/

ROCK = OL-PLAG PHYRIC BASALT
       SAME AS (117A-11-2,13-20)*




Leg : 12    Top/Bottom Interval(mm): 1070/1140  Describer: Aumento, F.
Hole: 117A  Top of Core Depth(m)   :   311.00   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   313.61   Sect/Pc #:  2/

ROCK = OL-PLAG PHYRIC BASALT
       SAME AS (117A-11-2,13-20)*




Leg : 12    Top/Bottom Interval(mm): 1070/1140  Describer: Ryall, P.
Hole: 117A  Top of Core Depth(m)   :   311.00   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   313.61   Sect/Pc #:  2/

ROCK = OL-PLAG PHYRIC BASALT*

Groundmass - MAGNETITE
             Size(mm):        0.1  Morphology: GRAINS
             SEVERAL VERY LARGE GRAINS,GRAY-WHITE,PROBABLY
             MAGHEMITIZED,CLASS 1;

             TITANOMAGNETITE
             Size(mm):     TO 0.1
             MORE TYPICAL OF SUBAERIAL THAN OF SUBMARINE
             BASALTS*

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These Web pages are from the Core Data from the Deep Sea Drilling Project Legs 1-96 CD-ROM produced 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, and collocated World Data Center for Marine Geology and Geophysics, Boulder. Data were compiled in cooperation with the U.S. Science Support Program, the Joint Oceanographic Institutions, Inc., and the U.S. National Science Foundation. Please see the NGDC privacy, disclaimer, and copyright notices.