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Core Data from the Deep Sea Drilling Project


Leg : 82    Top/Bottom Interval(mm):    0/1180  Analyst: Brannon, J.
Hole: 560   Sample Midpoint (m)    :   374.18
Core:   1   Top of Core Depth (m)  :   373.00
Sect:  1    Top of Section Depth(m):   373.00

LITHOLOGY: SEDIMENT;


Leg : 82    Top/Bottom Interval(mm): 1180/1430  Analyst: Brannon, J.
Hole: 560   Sample Midpoint (m)    :   374.43
Core:   1   Top of Core Depth (m)  :   373.00
Sect:  1    Top of Section Depth(m):   374.18

LITHOLOGY: SERPENTINIZED GABBRO BRECCIA;

  Piece No.  : PCE 1 (118-143);

  Comments   : SERPENTINIZED GABBRO BRECCIA,DUSKY-BLUE(5PB 3/2)
               CLAYEY MATRIX,CLASTS ARE SERP SHOWING RELICT PYX AS
               DARK-BROWN PRISMS;

  Phenocrysts: PYROXENE
               RELICT PYX AS DARK-BROWN PRISMS;

  Replacement: SERPENTINITE

               CLAY MINERALS


Leg : 82    Top/Bottom Interval(mm):    0/ 250  Analyst: Brannon, J.
Hole: 560   Sample Midpoint (m)    :   374.75
Core:   1   Top of Core Depth (m)  :   373.00
Sect:  2    Top of Section Depth(m):   374.50

LITHOLOGY: SERPENTINIZED GABBRO;

  Piece No.  : PCES 1 (1-4), 2 (8-10), 3 (14-16), 4 (18-22);

  Comments   : SERPENTINIZED GABBRO,VERY DARK-GRAY(7.5YR N3/0) WITH
               2-5CM OPX(BROWN,7.5YR 5/4);

  Phenocrysts: ORTHOPYROXENE             (   30%)
               Size(mm):      20-50
               BROWN OPX;

  Replacement: SERPENTINITE


Leg : 82    Top/Bottom Interval(mm):    0/ 600  Analyst: Brannon, J.
Hole: 560   Sample Midpoint (m)    :   377.10
Core:   2   Top of Core Depth (m)  :   376.50
Sect:  1    Top of Section Depth(m):   376.50

LITHOLOGY: SEDIMENT;
           LIMESTONE;

  Piece No.  : PCES 1 (1-3), 2 (5-10), 3 (14-23), 4A (25-34),
               4B (34-52), 4C (52-58);


Leg : 82    Top/Bottom Interval(mm):  600/ 700  Analyst: Brannon, J.
Hole: 560   Sample Midpoint (m)    :   377.20
Core:   2   Top of Core Depth (m)  :   376.50
Sect:  1    Top of Section Depth(m):   377.10

LITHOLOGY: GABBRO;

  Piece No.  : PCE 5 (60-68);

  Texture    : GABBRO;

  Comments   : VERY DARK-GRAY GABBRO(7.5YR N3/0) WITH BROWN OPX
               (7.5YR 5/4) 2-5CM;

  Alteration : MOD

  Phenocrysts: ORTHOPYROXENE             (   30%)
               Size(mm):      20-50
               BROWN OPX;


Leg : 82    Top/Bottom Interval(mm):  700/ 750  Analyst: Brannon, J.
Hole: 560   Sample Midpoint (m)    :   377.25
Core:   2   Top of Core Depth (m)  :   376.50
Sect:  1    Top of Section Depth(m):   377.20

LITHOLOGY: ASH;

  Piece No.  : PCE 6 (71-75);

  Comments   : INDURATED & ZEOLITIZED ASH,GRAYISH-GREEN(10GY 5/2);

  Replacement: ZEOLITE


Leg : 82    Top/Bottom Interval(mm):  750/ 920  Analyst: Brannon, J.
Hole: 560   Sample Midpoint (m)    :   377.42
Core:   2   Top of Core Depth (m)  :   376.50
Sect:  1    Top of Section Depth(m):   377.25

LITHOLOGY: SEDIMENT;
           LIMESTONE;

  Piece No.  : PCE 7 (78-91);


Leg : 82    Top/Bottom Interval(mm):  920/1000  Analyst: Brannon, J.
Hole: 560   Sample Midpoint (m)    :   377.50
Core:   2   Top of Core Depth (m)  :   376.50
Sect:  1    Top of Section Depth(m):   377.42

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCE 8 (92-100);

  Texture    : APHYRIC,FINE-GRAINED;

  Alteration : MOD


Leg : 82    Top/Bottom Interval(mm): 1000/1250  Analyst: Brannon, J.
Hole: 560   Sample Midpoint (m)    :   377.75
Core:   2   Top of Core Depth (m)  :   376.50
Sect:  1    Top of Section Depth(m):   377.50

LITHOLOGY: SEDIMENT;
           LIMESTONE;

  Piece No.  : PCES 9 (103-114), 10 (117-123);


Leg : 82    Top/Bottom Interval(mm): 1250/1300  Analyst: Brannon, J.
Hole: 560   Sample Midpoint (m)    :   377.80
Core:   2   Top of Core Depth (m)  :   376.50
Sect:  1    Top of Section Depth(m):   377.75

LITHOLOGY: BASALT;

  Piece No.  : PCE 11 (126-130);

  Texture    : VARIOLITIC;

  Alteration : EXT

  Comments   : GRAYISH-BLUE-GREEN(5BG 5/2) BASALT;


Leg : 82    Top/Bottom Interval(mm): 1300/1400  Analyst: Brannon, J.
Hole: 560   Sample Midpoint (m)    :   377.90
Core:   2   Top of Core Depth (m)  :   376.50
Sect:  1    Top of Section Depth(m):   377.80

LITHOLOGY: SEDIMENT;
           LIMESTONE;

  Piece No.  : PCE 12 (132-138);


Leg : 82    Top/Bottom Interval(mm):    0/ 800  Analyst: Neuser, R.
Hole: 560   Sample Midpoint (m)    :   386.30
Core:   3   Top of Core Depth (m)  :   385.50
Sect:  1    Top of Section Depth(m):   385.50

LITHOLOGY: SERPENTINITE BRECCIA;

  Piece No.  : PCES 1 (1-3), 2 (5-14), 3 (15-24), 4 (26-37),
               5 (39-48), 6 (50-56), 7 (58-64), 8 (67-72),
               9 (73-78);

  Texture    : SERP BRECCIA,PCE 2 IS VERY COARSE-GRAINED,INTERVAL
               27-45CM IS VERY FINE-GRAINED;

  Alteration : FRESH
               ROCK HAS RATHER FRESH APPEARANCE;

  Comments   : COLOR OF ROCK RANGES FROM VERY DARK-GRAY(2.5Y N3/0)
               TO DARK-GREEN(5G 4/1),INTERVAL 27-45CM IS LIGHT-GRAY
               (2.5Y N7/0),PCES 3+6-9 ARE BRECCIATED WITH SIZE OF
               CLASTS <6MM(BOTH CLASTS & MATRIX ARE SERP?);

  Replacement: SERPENTINITE
               CLASTS & MATRIX-ID SERP UNCERTAIN;


Leg : 82    Top/Bottom Interval(mm):    0/ 700  Analyst: Neuser, R.
Hole: 560   Sample Midpoint (m)    :   399.20
Core:   4   Top of Core Depth (m)  :   398.50
Sect:  1    Top of Section Depth(m):   398.50

LITHOLOGY: SHEARED SERPENTINITE & BRECCIA (MYLONITE);

  Piece No.  : PCE 1 (0-69);

  Comments   : INTERVAL 0-60CM IS CLAYEY VERY DEFORMED GRAY TO
               WHITE(2.5Y N6/0 TO 2.5Y N8/0) SERP WITH SOME CLASTS
               OF BLACK-TO-DARK-GREEN(5G 4/1) SERP OCCUR,INTERVAL
               60-70CM HAS CLASTS OF SERP WITH NARROW VEINS FILLED
               WITH WHITE CHYRSOTILE;

  Replacement: CLAY MINERALS

               SERPENTINITE
               GRAY-TO-WHITE SERP WITH CLASTS OF BLACK-TO-DARK-
               GREEN SERP;

               CHRYSOTILE
               VEINS OF WHITE CHRYSOTILE;


Leg : 82    Top/Bottom Interval(mm):    0/1150  Analyst: Rideout, M.
Hole: 560   Sample Midpoint (m)    :   404.65
Core:   5   Top of Core Depth (m)  :   403.50
Sect:  1    Top of Section Depth(m):   403.50

LITHOLOGY: SHEARED SERPENTINITE BRECCIA (MYLONITE);

  Piece No.  : PCE 1 (0-111);

  Comments   : INTERVAL 0-81CM IS MYLONITE CLAYEY VERY DEFORMED
               GRAY-TO-WHITE(2.5Y N6/0 TO 2.5Y N8/0) SERP WITH SOME
               CLASTS OF BLACK-TO-DARK-GREEN(5G 4/1) SERP OCCUR &
               THESE CLASTS RANGE IN SIZE FROM 1-5CM IN DIAMETER
               WITH VEINS OF WHITE CHYRSOTILE,INTERVAL 81-111CM
               HAS CLASTS(6CM IN LENGTH) WHICH CONTAIN VEINS OF
               WHITE CHRYSOTILE;

  Replacement: SERPENTINITE
               GRAY-TO-WHITE SERP WITH CLASTS OF BLACK-TO-DARK-
               GREEN SERP;

               CHRYSOTILE
               VEINS OF WHITE CHRYSOTILE;


Leg : 82    Top/Bottom Interval(mm):    0/1500  Analyst: Rideout, M.
Hole: 560   Sample Midpoint (m)    :   414.00
Core:   6   Top of Core Depth (m)  :   412.50
Sect:  1    Top of Section Depth(m):   412.50

LITHOLOGY: SHEARED SERPENTINITE (BRECCIA);

  Piece No.  : PCE 1 (0-150);

  Comments   : HIGHLY ALTERED,SHEARED SERP BRECCIA,COLOR OF SERP
               RANGES FROM GRAY-GREEN TO LIGHTER GREEN(5GY 6/1 TO
               5G 5/2),A FEW CLASTS ARE PRESENT RANGING IN SIZE
               FROM 1-5CM IN DIAMETER,MATRIX IS CLAYEY & VERY
               DEFORMED;

  Replacement: SERPENTINITE

               CLAY MINERALS


Leg : 82    Top/Bottom Interval(mm):    0/1000  Analyst: Rideout, M.
Hole: 560   Sample Midpoint (m)    :   415.00
Core:   6   Top of Core Depth (m)  :   412.50
Sect:  2    Top of Section Depth(m):   414.00

LITHOLOGY: SHEARED SERPENTINITE BRECCIA (MYLONITE);

  Piece No.  : PCE 1 (0-100);

  Comments   : INTERVAL 0-87CM SHEARED SERP BRECCIA SIMILAR TO CORE
               6-1 WITH COLOR RANGING FROM GRAY-GREEN(5GY 6/1) TO
               LIGHTER GREEN(5G 5/2) & HIGHLY DEFORMED CLAYEY
               MATRIX,INTERVAL 87-100CM DISTINCT CHANGE IN COLOR OF
               MATRIX-MORE OF AN OLIVE-GRAY-GREEN(5G 5/2) & IS
               BRECCIA AS IN PREVIOUS INTERVAL WITH A LARGE CLAST
               4CM IN DIAMETER ON THE BOTTOM & CLAYS APPEAR MORE
               CONSOLIDATED & PACKED PLUS THERE ARE FEWER
               MICROCLASTS IN THE MATRIX;

  Replacement: SERPENTINITE

               CLAY MINERALS


Leg : 82    Top/Bottom Interval(mm):    0/ 160  Analyst: Rideout, M.
Hole: 560   Sample Midpoint (m)    :   415.18
Core:   6   Top of Core Depth (m)  :   412.50
Sect: CC    Top of Section Depth(m):   415.12

LITHOLOGY: SHEARED SERPENTINITE BRECCIA (MYLONITE);

  Piece No.  : PCE 1 (0-16);

  Comments   : HIGHLY DEFORMED & CLAYEY AS IN CORES 6-1 & 6-2,MORE
               CONSOLIDATION OF CLAY.MINS AS IN LOWER CMS OF CORE
               6-2,COLORS TEND TO BE MORE OF AN OLIVE-GREEN(ROUGHLY
               5G 5/2) ON CHART & RANGING DOWN TO 5G 7/2,SMALL
               VEINS OF CHRYSOTILE CAN BE OBSERVED IN BOTTOM OF THE
               SECTION;

  Replacement: CLAY MINERALS

               SERPENTINITE

               CHRYSOTILE
               CHRYSOTILE-FILLED VEINS IN BOTTOM OF SECTION;


    

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