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Core Data from the Deep Sea Drilling Project


Leg : 77    Top/Bottom Interval(mm):    0/  60  Analyst: Pisciotto, K.
Hole: 537   Sample Midpoint (m)    :   187.56
Core:  14   Top of Core Depth (m)  :   187.50
Sect:  1    Top of Section Depth(m):   187.50

LITHOLOGY: QTZ PORPHYRY;

  Piece No.  : PCE NO PCE NUMBER ASSIGNED;

  Comments   : PCE IS REDDISH-BROWN(10R4/6),PHYRIC NEPHELINE(?)
               & SAPONITE(?),1-2MM XTLS OF HEXAGONAL & ROUND
               NEPHELINE(?),SANIDINE(?) XTLS ALTERED TO WHITE &
               GREEN CLAY.MINS,1-2MM PHENOS OF EUHEDRAL TO SLIGHTLY
               SUBHEDRAL CLEAR QTZ,SEE DETAILED DESCRIPTION IN
               INITIAL REPORTS(PAGE 274) IN GRAPHIC DESCRIPTION
               SECTION;

  Phenocrysts: QUARTZ
               Size(mm):        1-2

  Replacement: SANIDINE
               XTLS ALTERED TO WHITE & GREEN CLAY.MINS-ID
               UNCERTAIN;

               NEPHELINE
               Size(mm):        1-2

               SAPONITE
               ID NEPHELINE & SAPONITE UNCERTAIN,NEPHELIN XTLS
               ARE HEXAGONAL & ROUNDED;

               CLAY MINERALS
               Minerals Replaced: SANIDINE
               WHITE & GREEN CLAY.MINS;


Leg : 77    Top/Bottom Interval(mm):    0/ 150  Analyst: Pisciotto, K.
Hole: 537   Sample Midpoint (m)    :   197.15
Core:  15   Top of Core Depth (m)  :   197.00
Sect:  1    Top of Section Depth(m):   197.00

LITHOLOGY: PHYLLITE;
           METAMORPHIC ROCK;

  Piece No.  : PCE NO PCE NUMBERS ASSIGNED;

  Comments   : TWO PCES OF SLATE(0-3CM & 3-14CM INTERVALS),
               BROWNISH-GRAY(2.5Y 6/2),SMALLER PCE IS LAMINATED
               WITH UPPER & LOWER LAMINAE SHOWING SIMPLE FOLDS,
               LOWER PCE IS LAYERED TO LAMINATED WITH LESS
               SCHISTOSITY THAN TOP PCE & SOME APPARENT SEGREGATION
               BANDING OF QTZ WITH COLOR LIGHT COLOR LIGHT
               BROWNISH-GRAY(2.5Y 6/4) WITH SOME SOFT REDDISH &
               GRAY-GREEN HUES,SMALL OFFSET ALONG FRACTURE
               DISPLACES LAMINATIONS NEAR TOP OF LARGER PCE,LOWER
               PART OF LARGER PCE IS COMPLEX WITH SOME SHARP LOW-
               ANGLE OFFSETS WITH LENSES OF CLEAR QTZ(?) & COMPLEX
               FRACTURING,TOP OF LARGER PCE HAS WELL-DEVELOPED
               CLEAVAGE & THE BASE SHOWS STRONG LINEATION,LAYERING
               SLIGHTLY INCLINED;


Leg : 77    Top/Bottom Interval(mm):    0/  20  Analyst: Cotillon, P.
Hole: 537   Sample Midpoint (m)    :   206.52
Core:  16   Top of Core Depth (m)  :   206.50
Sect:  1    Top of Section Depth(m):   206.50

LITHOLOGY: QTZ;

  Piece No.  : PCE 1 (0-2);

  Comments   : LIGHT GRAY(N7) QTZ WITH LAZY AREAS OF WEAK RED &
               LIGHT OLIVE-BROWN & DUSKY GREEN & YELLOW(2.5Y 8/6);


Leg : 77    Top/Bottom Interval(mm):   20/ 350  Analyst: Cotillon, P.
Hole: 537   Sample Midpoint (m)    :   206.85
Core:  16   Top of Core Depth (m)  :   206.50
Sect:  1    Top of Section Depth(m):   206.52

LITHOLOGY: PHYLLITE;
           METAMORPHIC ROCK;

  Piece No.  : PCES 2 (2-5), 3 (5-13), 4 (13-22), 5 (23-26),
               6 (26-29), 7 (29-34);

  Comments   : MOTTLED LIGHT BROWNISH-GRAY(2.5Y 6/2),WEAK RED
               (10R 4/3) TO DUSKY GREEN(5G 3/2) BANDED WITH SEVERAL
               LAMINATIONS OR THIN LAYERS THAT SHOW SINGLE-HINGED
               KINK FOLD(15-20CM),FRACTURE SETS AT 100 DEGREES,
               LIGHT OLIVE-BROWN ZONES BOUND MOST OF THE FRACTURES;


    

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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