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Core Data from the Deep Sea Drilling Project


Leg : 38    Top/Bottom Interval(mm):  220/ 580  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   401.08
Core:  42   Top of Core Depth (m)  :   399.00
Sect:  2    Top of Section Depth(m):   400.72

LITHOLOGY: APHYRIC BASALT;
           SEDIMENT (SANDSTONE);

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : APHYRIC, FINE-GRAINED, RARE PLAG & OL PHENOS;

  Structure  : INTERVAL 54-58CM CONTAINS VEINS OF WHITE FIBROUS
               CALCITE AND FINE-GRAINED DARK GREEN CHLORITE;

  Comments   : BASALT IS DARK GRAY (N3);

  Vesicles   :
               Location:            Filling: CHLORITE
               AMYGDULES OF DARK GREEN CHLORITE;

  Phenocrysts: PLAGIOCLASE

               OLIVINE
               PHENOS ARE RARE;

  Replacement: CHLORITE

               CALCITE


Leg : 38    Top/Bottom Interval(mm):  580/1300  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   401.80
Core:  42   Top of Core Depth (m)  :   399.00
Sect:  2    Top of Section Depth(m):   401.08

LITHOLOGY: BASALT;
           BRECCIA (CONGLOMERATE);

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : ANGULAR & ROUND FRAGMENTS OF FINE-GRAINED BROWNISH
               BLACK (2YR 2/1) WEATHERED BASALT 1-5CM IN SIZE
               CEMENTED BY GREEN-GRAY CHLORITE-CALCITE MATRIX;

  Alteration : WEATHERED;

  Replacement: CHLORITE

               CALCITE


Leg : 38    Top/Bottom Interval(mm): 1300/1500  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   402.00
Core:  42   Top of Core Depth (m)  :   399.00
Sect:  2    Top of Section Depth(m):   401.80

LITHOLOGY: PHYRIC BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : PHYRIC;

  Structure  : AMYGDALOIDAL;

  Comments   : BROWNISH BLACK (2YR 2/1) TO DARK GRAY (N3);


Leg : 38    Top/Bottom Interval(mm):  910/1500  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   410.00
Core:  43   Top of Core Depth (m)  :   408.50
Sect:  1    Top of Section Depth(m):   409.41

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : APHYRIC, RARE PLAG & OL PHENOS;

  Structure  : AMYGDALOIDAL;
               THIN VEINS OF WHITE CALCITE (0.5-1MM) ARE RARE;

  Vesicles   : Size(mm):     1-10   Percent:
               Location:            Filling: CALCITE, CHLORITE
               Shape   : ELLIPSOIDAL
               ROUND & ELLIPSOIDAL AMYGDULES OF WHITE CALCITE AND
               BLACK-GREEN CHLORITE;

  Phenocrysts: OLIVINE

               PLAGIOCLASE
               PHENOS ARE RARE;

  Replacement: CHLORITE

               CALCITE


Leg : 38    Top/Bottom Interval(mm):    0/1500  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   411.50
Core:  43   Top of Core Depth (m)  :   408.50
Sect:  2    Top of Section Depth(m):   410.00

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : APHYRIC, RARE PLAG & OL & PYX PHENOS;

  Structure  : SLICKENSIDES WITH BLACK CHLORITE AT 111-150CM,
               CALCITE VEIN WITH CHLORITE AT 50-65CM;

  Vesicles   :
               Location:            Filling: CALCITE, CHLORITE
               AMYGDULES, ABUNDANT AMYGDULES OF WHITE CALCITE AT
               38-43CM, VESICLE OF SIZE 5X3CM AT 78-82CM FILLED
               WITH GREEN-GRAY CHLORITE;

  Phenocrysts: OLIVINE

               PLAGIOCLASE

               PYROXENE
               PHENOS ARE RARE;

  Replacement: CHLORITE

               CALCITE


Leg : 38    Top/Bottom Interval(mm):    0/1500  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   413.00
Core:  43   Top of Core Depth (m)  :   408.50
Sect:  3    Top of Section Depth(m):   411.50

LITHOLOGY: APHYRIC TO SPARSELY PHYRIC BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : APHYRIC TO SPARSELY PHYRIC;

  Structure  : THICK VEIN OF WHITE CALCITE AT 25-27CM, THIN VEIN OF
               CHLORITE AT 56-92CM;

  Alteration :  CHLORITIZATION & RARE PYRITIZATION AT 122-150CM;

  Comments   : DARK GRAY (N3) TO GREENISH BLACK (5G 2/1),
               MYLONITIZATION;

  Vesicles   : Size(mm):     2-15   Percent:
               Location:            Filling: CALCITE, CHLORITE
               Shape   : ROUND
               AMYGDULES OF WHITE CALCITE & GRAY-GREEN CHLORITE,
               ROUND VESICLES OF FINE-GRAINED CHLORITE;

  Replacement: CHLORITE

               CALCITE


Leg : 38    Top/Bottom Interval(mm):    0/1500  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   414.50
Core:  43   Top of Core Depth (m)  :   408.50
Sect:  4    Top of Section Depth(m):   413.00

LITHOLOGY: APHYRIC TO OL-PYX-PLAG SPARSELY PHYRIC BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : APHYRIC TO SPARSELY PHYRIC, RARE PHENOS;

  Structure  : AMYGDALOIDAL, BLACK CHLORITE VEINS AT 1-6 & 34-36CM,
               CALCITE-CHLORITE VEIN AT 70-77CM, CHLORITE VEIN AT
               128-136CM;

  Vesicles   :
               Location: THROUGHOUT Filling: CALCITE, CHLORITE
               VESICLE AT 94-97CM, ROUND AMYGDULES OF WHITE
               CALCITE AT 115-133CM, 94-136CM IS AMYGDALOIDAL;

  Phenocrysts: OLIVINE

               PLAGIOCLASE

               PYROXENE
               PHENOS ARE RARE;

  Replacement: CHLORITE

               CALCITE


Leg : 38    Top/Bottom Interval(mm):  150/ 750  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   418.75
Core:  44   Top of Core Depth (m)  :   418.00
Sect:  1    Top of Section Depth(m):   418.15

LITHOLOGY: BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : VERY FINE-GRAINED, CONSISTS OF DRILL PEBBLES;

  Structure  : FISSURE (SPLIT) CAVITY;

  Comments   : MYLONITIZATION;

  Replacement: CALCITE
               CRYSTALS ON THE FISSURE CAVITY;

               CHLORITE
               CHLORITIZATION, CRYSTALS ON THE FISSURE CAVITY;


Leg : 38    Top/Bottom Interval(mm):  750/1500  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   419.50
Core:  44   Top of Core Depth (m)  :   418.00
Sect:  1    Top of Section Depth(m):   418.75

LITHOLOGY: PLAG-OL-PYX SPARSELY PHYRIC BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : SPARSELY PHYRIC;

  Structure  : CALCITE VEINS WITH CHLORITE AT 90-97CM;

  Vesicles   :
               Location:            Filling: CALCITE, CHLORITE
               Shape   : ROUND
               SMALL ROUND AMYGDULES;

  Phenocrysts: PLAGIOCLASE

               OLIVINE

               PYROXENE
               PHENOS ARE RARE;

  Replacement: CALCITE

               CHLORITE
               CHLORITIZATION AT 125-130CM;


Leg : 38    Top/Bottom Interval(mm):   70/1500  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   421.00
Core:  44   Top of Core Depth (m)  :   418.00
Sect:  2    Top of Section Depth(m):   419.57

LITHOLOGY: APHYRIC TO SPARSELY PHYRIC BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : APHYRIC TO SPARSELY PHYRIC;

  Structure  : AMYGDALOIDAL;

  Comments   : COLOR IS DARK GRAY (N3) TO OLIVE BLACK (5Y 2/1);

  Vesicles   :
               Location:            Filling: CALCITE, CHLORITE
               AMYGDULES, INTERVAL 75-83CM CONTAINS RARE ROUND
               AMYGDULES OF WHITE CALCITE 2-10MM IN SIZE;

  Replacement: CHLORITE

               CALCITE


Leg : 38    Top/Bottom Interval(mm):    0/ 200  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   421.20
Core:  44   Top of Core Depth (m)  :   418.00
Sect:  3    Top of Section Depth(m):   421.00

LITHOLOGY: APHYRIC BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : APHYRIC;

  Structure  : CONSISTS OF DRILL PEBBLES;


Leg : 38    Top/Bottom Interval(mm):  200/1500  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   422.50
Core:  44   Top of Core Depth (m)  :   418.00
Sect:  3    Top of Section Depth(m):   421.20

LITHOLOGY: APHYRIC TO OL-PYX SPARSELY PHYRIC BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : APHYRIC TO SPARSELY PHYRIC;

  Structure  : A FEW THIN VEINS OF WHITE CALCITE AT 32-37 & 84-87 &
               101CM, CAVITIES FILLED WITH CHLORITE & CALCITE AT
               117-120 & 137-140CM;

  Vesicles   :
               Location:            Filling: CALCITE, CHLORITE
               AMYGDULES;

  Phenocrysts: OLIVINE

               PYROXENE
               RARE PHENOS;

  Replacement: CHLORITE

               CALCITE


Leg : 38    Top/Bottom Interval(mm):  600/1500  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   429.00
Core:  45   Top of Core Depth (m)  :   427.50
Sect:  1    Top of Section Depth(m):   428.10

LITHOLOGY: PLAG-OL-PYX SPARSELY PHYRIC BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : SPARSELY PHYRIC;

  Structure  : A FEW THIN VEINS OF CALCITE & CHLORITE AT 81-83 &
               98-99 & 140-142CM, SLICKENSIDES;

  Vesicles   :
               Location:            Filling: CALCITE, CHLORITE
               RARE SMALL AMYGDULES;

  Phenocrysts: OLIVINE

               PYROXENE

               PLAGIOCLASE
               PHENOS ARE RARE;

  Replacement: CHLORITE

               CALCITE


Leg : 38    Top/Bottom Interval(mm):    0/1500  Analyst: Kharin, G.
Hole: 338   Sample Midpoint (m)    :   430.50
Core:  45   Top of Core Depth (m)  :   427.50
Sect:  2    Top of Section Depth(m):   429.00

LITHOLOGY: PLAG-OL-PYX SPARSELY PHYRIC BASALT;
           SAME LITHOLOGY AS SEC 1;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : SPARSELY PHYRIC;


    

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