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Core Data from the Deep Sea Drilling Project


Leg : 69    Top/Bottom Interval(mm):    0/ 150  Analyst: Natland, J.
Hole: 505   Sample Midpoint (m)    :   231.98
Core:  24   Top of Core Depth (m)  :   228.50
Sect: CC    Top of Section Depth(m):   231.93

LITHOLOGY: SILICEOUS NANNOFOSSIL OOZE;


Leg : 69    Top/Bottom Interval(mm):  150/ 250  Analyst: Natland, J.
Hole: 505   Sample Midpoint (m)    :   232.08
Core:  24   Top of Core Depth (m)  :   228.50
Sect: CC    Top of Section Depth(m):   231.98

LITHOLOGY: PLAG-OL-CPX PHYRIC BASALT;

  Piece No.  : PCE 91 (15-25);

  Texture    : PHYRIC;

  Structure  : ELONGATE CRACK WITH REDDISH SECONDARY MINS IN IT;

  Alteration : PATCHES OF PYR;

  Vesicles   : Size(mm):            Percent:   2-3
               Location:            Filling: SMEC
               PALE BLUISH-GREEN SMEC;

  Phenocrysts: PLAGIOCLASE               (   15%)

               CLINOPYROXENE             (    4%)

               OLIVINE                   (    1%)

  Replacement:

               UNIDENTIFIED
               REDDISH SECONDARY MINERALS;

               SMECTITE
               PALE BLUISH-GREEN;


Leg : 69    Top/Bottom Interval(mm):   20/ 100  Analyst: Natland, J.
Hole: 505   Sample Midpoint (m)    :   233.60
Core:  25   Top of Core Depth (m)  :   233.50
Sect:  1    Top of Section Depth(m):   233.52

LITHOLOGY: PLAG-CPX-OL PHYRIC BASALT;

  Piece No.  : PCE 92 (2-10);

  Texture    : PHYRIC;

  Alteration : MOD
               FAINT REDDISH OXIDATIVE ALTERATION RIND,OL LARGELY
               ALTERED,PLAG PHENOS CAN BE SKELETAL;

  Vesicles   :
               Location:            Filling: CLAY.MINS,CALCITE
               VESICLES SPARSE,WAXY PALE BLUE-GREEN CLAY.MINS
               FILL VESICLES WHILE SOME ARE FILLED WTIH CALCITE;

  Phenocrysts: PLAGIOCLASE
               Size(mm):       TO 5

               OLIVINE
               Size(mm):       TO 5

               CLINOPYROXENE
               Size(mm):       TO 5
               PHENOS TOTAL 25%(MOSTLY PLAG),OL & PLAG ALTERED,
               PLAG POSSIBLY PARTLY REPLACED BY CLAY.MINS(?),
               SOME PLAG STAINED RED;

  Replacement: CLAY
               Minerals Replaced: PLAG
               CLAY.MINS REPLACING PLAG UNCERTAIN;

               FERROUS HYDROX MINS
               Minerals Replaced: OL
               REDDISH;

               CLAY
               Minerals Replaced: OL
               REDDISH;

                                         (    0%)


Leg : 69    Top/Bottom Interval(mm):   20/ 400  Analyst: Adamson, A.C.
Hole: 505   Sample Midpoint (m)    :   238.40
Core:  26   Top of Core Depth (m)  :   238.00
Sect:  1    Top of Section Depth(m):   238.02

LITHOLOGY: PLAG-CPX-OL PHYRIC BASALT;

  Piece No.  : PCES 93 (2-7), 94 (10-14), 95 (15-18), 96 (20-25),
               97 (25-35), 98 (36-40);

  Texture    : PHYRIC,GLAS.MESOSTAS IN PCE 93;

  Alteration : OL ALTERED,STRONG STAINING TO PLAG PHENOS & SOME
               ARE SKELETAL,PCE 97 HAS FAINT OXIDATION RIND WITH
               OL & PLAG STAINED RED & UNOXIDIZED AREA IS SIMILAR
               TO PCE 93;

  Vesicles   : OUTER SURFACE OF PCE 93 VESICULAR;

  Phenocrysts: PLAGIOCLASE               (   20%)

               OLIVINE                   (    1%)

               CLINOPYROXENE             (    4%)
               PHENOS AVERAGE 2-3MM LONG,OL & PLAG ALTERED,
               OL PRESENT AS PSEUDOMORPHS FILLED WITH PALE BLUE/
               GREEN CLAY.MINS & ALSO CALCITE & PYR,OFTEN CENTERS
               (CAVITIES) OF PHENOS REMAIN EMPTY OR MAY BE FILLED
               WITH CALCITE & PYR WITHIN PSEUDOMORPHS,
               GLOMEROCYRSTS OF PLAG ENCLOSING GLASS MESOSTAS &
               PYR(TO 1CM LONG),GLOMEROCRYSTS ARE CLEAR ON CUT
               SURFACE;

  Replacement: CALCITE

                                         (    0%)
               PCES 94-96+98;

               PCE 97 HAS PYR;

               CLAY
               WAXY & PALE BLUE/GREEN CLAY.MINS;

               FERROUS HYDROX MINS
               Minerals Replaced:         OL
               REDDISH;

               CLAY
               Minerals Replaced:         OL
               REDDISH;


    

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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