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Core Data from the Deep Sea Drilling Project


Leg : 69    Top/Bottom Interval(mm):    0/ 300  Analyst: Pertsev, N.
Hole: 505B  Sample Midpoint (m)    :   136.30
Core:   1   Top of Core Depth (m)  :   136.00
Sect:  1    Top of Section Depth(m):   136.00

LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
           PILLOW BASALT;

  Piece No.  : PCES 112-1 (3-9), 113-1 (15-19), 114-1 (23-27);

  Texture    : MOD PHYRIC,GLASSY RIND ON EACH PCE;

  Structure  : PILLOW,RARE CRACKS ARE FILLED MOSTLY WITH YELLOW
               SMEC & WITH SMALL(0.1-0.3MM) SPOTS OF MN.OX(?);

  Alteration : FRESH

  Vesicles   : Size(mm):   TO 1.5   Percent:    <1
               Location:            Filling: SMEC
               VESICLES ARE EITHER UNFILLED OR FILLED PARTLY WITH
               YELLOW SMEC;

  Phenocrysts: PLAGIOCLASE               (    4%)
               Size(mm):       TO 5

               OLIVINE                   (    2%)
               Size(mm):       TO 3

               CLINOPYROXENE             (    0%)

  Replacement: SMECTITE
               YELLOW;

               MANGANESE OXIDE
               ID MN.OX UNCERTAIN;


Leg : 69    Top/Bottom Interval(mm):    0/1500  Analyst: Adamson, A.C.
Hole: 505B  Sample Midpoint (m)    :   142.50
Core:   2   Top of Core Depth (m)  :   141.00
Sect:  1    Top of Section Depth(m):   141.00

LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
           PILLOW BASALT;

  Piece No.  : PCES 112-2 (2-9), 113-2 (11-18), 114 (19-33),
               115 (36-40), 116 (42-46), 117 (48-53), 118 (55-60),
               119 (63-75), 120 (76-88), 121 (78-90), 122 (92-98),
               123 (99-106), 124 (107-120), 125 (123-129),
               126 (131-139), 127 (141-148);

  Texture    : MOD PHYRIC,UNIFORMLY FINE-GRAINED,VARIOLITIC TEXTURE
               ON PCE 114 INDICATES PILLOW MARGIN BUT GLASS BROKEN
               OFF,GLASS MARGINS ON PCES 122+127;

  Structure  : PILLOW BASALT;

  Alteration : FRESH TO MOD
               PCES 113-2 & 115-119+123+125,OXIDATION RIMS COMMON
               & APPEAR DUSKY YELLOW/ORANGE;

  Comments   : PCE 115 IS MUCH LIGHTER THAN OTHER ROCKS;

  Vesicles   : Size(mm):       <1   Percent:    <1
               Location:            Filling: CLAY.MINS,CALCITE
               GREEN/BLUE CLAY.MINS & SOMETIMES CALCITE FILL
               VESICLES;

               Size(mm):       <1   Percent:    <1
               Location:            Filling: MN.OX
               PCE 115;

  Phenocrysts: PLAGIOCLASE               ( TO 5%)
               Size(mm):        4-5

               OLIVINE                   ( TO 1%)
               Size(mm):          1

               COMBINATION
               Size(mm):          4
               PLAG & AUGITE GLOMEROCRYSTS;

  Replacement: CLAY
               GREEN/BLUE;

               CALCITE

               MANGANESE OXIDE
               ID MN.OX UNCERTAIN;

                                         (   TR%)
               PCE 115;


Leg : 69    Top/Bottom Interval(mm):    0/1450  Analyst: Adamson, A.C.
Hole: 505B  Sample Midpoint (m)    :   143.95
Core:   2   Top of Core Depth (m)  :   141.00
Sect:  2    Top of Section Depth(m):   142.50

LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
           PILLOW BASALT;

  Piece No.  : PCES 128 (3-6), 129 (8-14), 130 (15-18),
               131 (20-25), 132 (27-30), 133 (31-34), 134 (36-43),
               135 (45-51), 136 (53-57), 137 (59-65), 138 (66-68),
               139 (68-75), 140 (78-85), 141 (87-95), 142 (96-108),
               143 (111-117), 144 (120-125), 145 (128-133),
               146 (135-143);

  Texture    : MOD PHYRIC,CLEAR VARIOLITIC TEXTURE ADJACENT TO
               GLASS MARGINS IN PCES 129+139+144,GLASS MARGINS ON
               PCES 129+134+139+143-144;

  Structure  : PILLOW BASALT,PCE 135 HAS PART OF ITS SURFACE
               ENCRUSTED WITH A LIGHT BROWN MATERIAL(AMORPHOUS
               SILICA?) THAT IS SPAR-LIKE IN APPEARANCE;

  Alteration : MOD
               PCES 131+137+141-142,MN.OX(?) OCCURS AS SMALL
               SPOTS ON SOME PCES(GENERALLY ON OXIDIZED
               SURFACES),SEVERAL OXIDATION RIMS;

  Vesicles   : Size(mm):       <1   Percent:    <1
               Location:            Filling: CLAY.MINS
               MORE ABUNDANT NEAR GLASS MARGINS,VESICLES MAY BE
               EMPTY OR FILLED WITH BLUE/GREEN OR MILK-COLORED
               CLAY.MINS-NO CALCITE,PCE 137 IS MORE VESICLULAR
               THAN THE OTHERS;

  Phenocrysts: PLAGIOCLASE               (  5-8%)
               Size(mm):        5-6

               OLIVINE                   (  1-2%)
               Size(mm):        1-2
               OL IS FRESH,PLAG GLOMEROCRYSTS ARE 4-5MM,HIGHER
               CONCENTRATION OF OL IN PCES 139+144;

  Replacement: CLAY
               GREEN/BLUE OR MILK-COLORED;

                                         ( RARE%)

               MANGANESE OXIDE
               ID MN.OX UNCERTAIN,OCCURS AS SMALL SPOTS ON SOME
               PCES;

               SILICA
               AMORPHOUS,ID SILICA UNCERTAIN,SPAR-LIKE;


Leg : 69    Top/Bottom Interval(mm):    0/1250  Analyst: Adamson, A.C.
Hole: 505B  Sample Midpoint (m)    :   145.25
Core:   2   Top of Core Depth (m)  :   141.00
Sect:  3    Top of Section Depth(m):   144.00

LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
           PILLOW BASALT;

  Piece No.  : PCES 147 (2-8), 148 (11-18), 149 (19-23),
               150 (26-30), 151 (33-37), 152 (39-48), 153 (50-60),
               154 (62-63), 155 (66-71), 156 (73-81), 157 (82-91),
               158 (93-98), 159 (99-102), 160 (106-110),
               161 (120-123);

  Texture    : MOD PHYRIC,GENERALLY UNIFORM IN APPEARANCE;

  Structure  : PILLOW BASALT,CRACK IN PCE 157 IS EMPTY;

  Alteration : MOD
               PCES 147-156,OXIDATION AREAS,OL FRESH EXCEPT IN
               OXIDIZED AREAS WHERE SOME ALTERATION TO CLAY.MINS
               OCCUR,PCES 147+150-151+154 OXIDIZED THROUGH
               MAJORITY OF ROCK BUT NOT SEVERELY;

  Vesicles   : Size(mm):     TO 1   Percent:     2
               Location:            Filling: CLAY.MINS,CALCITE
               PCE 157 VESICULAR TO 5% & MOSTLY UNFILLED,IN REST
               OF SECTION MAJORITY OF VESICLES FILLED WITH BLUE/
               GREEN CLAY.MINS & CALCITE,EMPTY VESICLES INCREASE
               TOWARDS PCE 162;

  Phenocrysts: PLAGIOCLASE               (    5%)
               Size(mm):          5

               OLIVINE                   (   <1%)
               Size(mm):          1
               PLAG GLOMEROCRYSTS IN PCE 156 ARE 1CM LONG,OL
               FRESH EXCEPT FOR SOME ALTERATION TO CLAY.MINS IN
               OXIDIZED ZONES,OL CONCENTRATION DECREASES TOWARDS
               CENTRAL PART OF CORE(AROUND PCE 156);

  Replacement: CLAY
               Minerals Replaced: OL
               BLUE/GREEN CLAY.MINS IN OXIDIZED ZONES;

               CALCITE
               Minerals Replaced: OL
               FOUND IN OXIDIZED ZONES;

               MANGANESE OXIDE
               ID MN.OX UNCERTAIN AS SPOTS ON PCES 161-162+153+
               156,MN.OX FRACTURE SURFACE COATING ON PCE 153 WITH
               PHIL;

               PHILLIPSITE
               PHIL FRACTURE SURFACE COATING ON PCE 153 WITH
               MN.OX;


Leg : 69    Top/Bottom Interval(mm):    0/1500  Analyst: Adamson, A.C.
Hole: 505B  Sample Midpoint (m)    :   152.00
Core:   3   Top of Core Depth (m)  :   150.50
Sect:  1    Top of Section Depth(m):   150.50

LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
           PILLOW BASALT;

  Piece No.  : PCES 163 (3-6), 164 (10-17), 165 (18-29),
               166 (27-33), 167 (36-42), 168 (44-50), 169 (53-69),
               170 (62-68), 171 (70-79), 172 (82-88), 173 (91-97),
               174 (99-104), 175 (107-120), 176 (123-126),
               177 (128-134), 178 (137-143), 179 (144-147);

  Texture    : MOD PHYRIC,FRESH GLASSY MARGINS PCES 164+166-168;

  Structure  : PILLOW BASALT;

  Alteration : MOD
               YELLOW/ORANGE OXIDATION ZONE PCES 169-174 WHERE OL
               IS ALTERED TO YELLOW CLAY.MINS;

  Comments   : YELLOW PATCHES(?) ON PCE 163;

  Vesicles   : Size(mm):            Percent:     2
               Location:            Filling: CLAY.MINS,CALCITE
               EMPTY VESICLES IN PCES 171-173,SOME FILLED WITH
               GREEN/BLUE CLAY.MINS IN FRESH ZONES & RED/BROWN IN
               OXIDIZED ZONES,SOMETIMES CALCITE IS FOUND IN THE
               CORE OF THE VESICLES;

  Phenocrysts: PLAGIOCLASE               (    5%)
               Size(mm):       TO 5

               OLIVINE                   (    1%)
               Size(mm):       TO 1
               OL ALTERED TO YELLOW CLAY.MINS IN OXIDIZED ZONES;

  Replacement: CLAY
               Minerals Replaced: OL
               YELLOW IN OXIDIZED ZONES;

               CLAY
               BLUE/GREEN IN VESICLES;

               CALCITE

               MANGANESE OXIDE
               ID MN.OX UNCERTAIN AS CRUST ON PCES 164-166+172;

               MANGANESE OXIDE
               YELLOW CRUST WITH PHIL ON PCE 170;

               PHILLIPSITE
               OCCURS WITH MN.OX AS CRUST ON PCE 170;


Leg : 69    Top/Bottom Interval(mm):    0/1400  Analyst: Pertsev, N.
Hole: 505B  Sample Midpoint (m)    :   153.40
Core:   3   Top of Core Depth (m)  :   150.50
Sect:  2    Top of Section Depth(m):   152.00

LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
           PILLOW BASALT;

  Piece No.  : PCES 180 (2-13), 181 (17-23), 182 (27-31),
               183 (35-39), 184 (42-49), 185 (50-60), 186 (62-76),
               187 (78-92), 188 (100-112), 189 (117-124),
               190 (126-131), 191 (133-137);

  Texture    : MOD PHYRIC,MICROLITIC IN PILLOW INTERIOR,VARIOLITIC
               NEAR COOLING SELVAGES,GLASSY AT PILLOW MARGINS(PCES
               182-184+189-191);

  Structure  : PILLOW BASALT;

  Alteration : FRESH
               DEVELOPED OXIDATION ZONES ALONG SOME SURFACES
               (ZONE THICKNESS TO 1.5CM),YELLOW/BROWN CLAY.MINS
               REPLACE GLASS;

  Comments   : DARK GRAY BASALT;

  Vesicles   : Size(mm):        1   Percent:  TO 1
               Location:            Filling: SMEC,CLAY.MINS
               LIGHT GREEN-BLUE SMEC PARTLY FILLS VESICLES,SOME
               VESICLES ARE FILLED WITH BROWN & YELLOW CLAY.MINS;

  Phenocrysts: PLAGIOCLASE               (  3-6%)
               Size(mm):        1-3
               PLAG PHENOS SELDOM TO 8MM;

               OLIVINE                   (    1%)
               Size(mm):        1-3

  Replacement: SMECTITE
               LIGHT BLUE-GREEN;

               CLAY
               Minerals Replaced: GLASS
               BROWN-YELLOW CLAY.MINS IN VESICLES & REPLACING
               GLASS;


Leg : 69    Top/Bottom Interval(mm):    0/ 150  Analyst: Pertsev, N.
Hole: 505B  Sample Midpoint (m)    :   159.65
Core:   4   Top of Core Depth (m)  :   159.50
Sect:  1    Top of Section Depth(m):   159.50

LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;

  Piece No.  : PCE 192 (3-15);

  Texture    : MOD PHYRIC,MICROLITIC;

  Structure  : CRACKS(SURFACES) COVERED WITH LIGHT GREEN & BROWN
               (IN OXIDATION ZONES) SMEC;

  Alteration : FRESH

  Vesicles   : Size(mm):     TO 1   Percent:
               Location:            Filling: CLAY.MINS
               LIGHT GREEN OR BROWN CLAY.MINS FILLS VESICLES;

  Phenocrysts: PLAGIOCLASE               (    3%)
               Size(mm):       TO 3

               OLIVINE                   (  0.5%)
               Size(mm):       TO 2

  Replacement: CLAY
               LIGHT GREEN OR BROWN;

               SMECTITE
               LIGHT GREEN OR BROWN;


Leg : 69    Top/Bottom Interval(mm):    0/ 700  Analyst: Adamson, A.C.
Hole: 505B  Sample Midpoint (m)    :   164.70
Core:   5   Top of Core Depth (m)  :   164.00
Sect:  1    Top of Section Depth(m):   164.00

LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;

  Piece No.  : PCES 193 (2-9), 194 (10-18), 196 (20-30),
               197 (30-46), 198 (49-57), 199 (59-64), 200 (65-68);

  Texture    : MOD PHYRIC,FRESH GLASSY MARGINS PCES 193+196;

  Structure  : CRACKS WITH WELL DEVELOPED OXIDATION ZONE;

  Alteration : FRESH TO MOD
               PCES 194-199 WITH SOME YELLOW-RED OXIDATION(WELL
               DEVELOPED ALONG CRACKS),PLAG FRESH,OL GENERALLY
               FRESH ALTERED TO RED CLAY.MINS IN OXIDIZED ZONE;

  Comments   : PCE 200 HAS YELLOW PATCHES SIMILAR TO THAT FOUND ON
               PCE 163 IN CORE 3-1;

  Vesicles   : Size(mm):       <1   Percent:
               Location:            Filling: CLAY.MINS
               BLUE-GREEN IN FRESH AREAS & RED IN OXIDIZED ZONES;

  Phenocrysts: PLAGIOCLASE               (    5%)
               Size(mm):          2

               OLIVINE                   (    1%)
               Size(mm):          1
               PLAG FRESH,OL GENERALLY FRESH ALTERED TO RED
               CLAY.MINS IN OXIDIZED ZONES;

  Replacement: CLAY
               Minerals Replaced: OL
               BLUE-GREEN IN FRESH ZONE,RED CLAY.MINS IN OXIDIZED
               AREAS;

               CLAY
               BLUE-GREEN CLAY.MINS FILL VESICLES IN FRESH AREAS,
               RED CLAY.MINS IN OXIDIZED ZONES;


Leg : 69    Top/Bottom Interval(mm):  700/ 850  Analyst: Adamson, A.C.
Hole: 505B  Sample Midpoint (m)    :   164.85
Core:   5   Top of Core Depth (m)  :   164.00
Sect:  1    Top of Section Depth(m):   164.70

LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;

  Piece No.  : PCES 201 (72-77), 202 (80-85);

  Texture    : MOD PHYRIC,SIMILAR TO PCES 193-202 EXCEPT FOR PHENO
               ABUNDANCES;

  Alteration : MOD
               BOTH PCES;

  Phenocrysts: PLAGIOCLASE               (    2%)

               OLIVINE                   ( RARE%)


Leg : 69    Top/Bottom Interval(mm):  850/1050  Analyst: Adamson, A.C.
Hole: 505B  Sample Midpoint (m)    :   165.05
Core:   5   Top of Core Depth (m)  :   164.00
Sect:  1    Top of Section Depth(m):   164.85

LITHOLOGY: OL-PLAG-CPX MOD PHYRIC BASALT;

  Piece No.  : PCES 203 (86-90), 204 (91-97), 205 (99-105);

  Texture    : MOD PHYRIC,SIMILAR TO PCES 193-202 EXCEPT FOR PHENO
               ABUNDANCES;

  Alteration : FRESH

  Phenocrysts: OLIVINE                   (    3%)

               PLAGIOCLASE               (    2%)

               CLINOPYROXENE             (    1%)
               PLAG & CPX FRESH;


Leg : 69    Top/Bottom Interval(mm):    0/1500  Analyst: Adamson, A.C.
Hole: 505B  Sample Midpoint (m)    :   170.50
Core:   6   Top of Core Depth (m)  :   169.00
Sect:  1    Top of Section Depth(m):   169.00

LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;

  Piece No.  : PCES 206 (3-7), 207 (12-15), 208 (17-30),
               209 (32-41), 210 (43-50), 211 (51-59), 212 (60-68),
               213 (70-75), 214 (78-83), 215 (85-88), 216 (90-102),
               217 (103-110), 218 (111-121), 219 (122-136),
               220 (138-147);

  Texture    : MOD PHYRIC,MICROLITIC, NO GLASSY MARGINS;

  Structure  : PCE 214 HAS YELLOW SPAR-LIKE MINS(PHIL) IN ITS
               CAVITIES TOGETHER WITH YELLOW CLAY.MINS & MN.OX(?),
               RARE CRACKS HAVE GREEN SMEC FILLING,PCE 217 HAS
               CALCITE & YELLOW CLAY.MINS FILLING CRACKS;

  Alteration : FRESH TO MOD
               VARIES LOCALLY,OL ALTERED TO SOME EXTENT IN
               OXIDIZED AREAS,PCE 211 POROSITY POSSIBLY RESULT OF
               LEACHING;

  Vesicles   : Size(mm):     TO 1   Percent:    <1
               Location:            Filling: CLAY.MINS
               BLUE/GREEN CLAY.MINS(SOMETIMES WITH A RED RIM),PCE
               207 HAS UNFILLED VESICLES;

  Phenocrysts: PLAGIOCLASE               ( TO 5%)
               Size(mm):       TO 5

               OLIVINE                   ( TO 1%)
               Size(mm):          1
               OL GENERALLY FRESH BUT CAN BE ALTERED TO SOME
               EXTENT IN OXIDIZED AREAS,OL CONCENTRATION VERY
               SCARCE IN UPPER SECTION OF CORE;

  Replacement: PHILLIPSITE
               YELLOW & SPAR-LIKE PHIL FILLS CAVITIES IN PCE 214,
               TRACES OF PHIL FOUND ON SEVERAL OTHER PCES;

               CLAY
               YELLOW CLAY.MINS IN CAVITIES OF PCE 214 & FOUND
               IN PCE 217;

               MANGANESE OXIDE
               ID MN.OX IN CAVITIES OF PCE 214 UNCERTAIN;

               SMECTITE
               GREEN IN CRACKS;

               CALCITE
               PCE 217;

                                         (   TR%)


Leg : 69    Top/Bottom Interval(mm):    0/ 950  Analyst: Adamson, A.C.
Hole: 505B  Sample Midpoint (m)    :   171.45
Core:   6   Top of Core Depth (m)  :   169.00
Sect:  2    Top of Section Depth(m):   170.50

LITHOLOGY: PLAG-OL MOD PHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCES 221 (2-12), 222 (13-19), 223 (22-27),
               224 (29-35), 226 (47-56), 227 (58-62), 228 (64-67),
               229 (70-78), 230 (80-85), 231 (87-92);

  Texture    : MOD PHYRIC,MICROLITIC,NO GLASS RIMS OR OBVIOUS
               CHANGES IN GRAIN SIZE;

  Structure  : MASSIVE(?) BASALT,BLUE-GREEN SMEC FILLS SOME JOINTS;

  Alteration : FRESH TO MOD
               OL ALTERED TO SOME EXTENT IN STRONGLY OXIDIZED
               AREAS SUCH AS IN PCE 231 OL ALTERED TO ORANGE OR
               BLUE/GREEN CLAY.MINS,PCES 222+229 HAVE SOME MN.OX
               SPOTS ON THE SURFACE,PCES 222-224 ARE HIGHLY
               POROUS & SIMILAR IN APPEARANCE TO LEACHED PCE IN
               CORE 6-1 EXCEPT LESS SEVERE & NOT AS MANY ADVANCED
               FE STAINS IN LOCALITY;

  Vesicles   : Size(mm):       <1   Percent:    <1
               Location:            Filling: CLAY.MINS,CALCITE
               VESICLES GENERALLY FILLED WITH BLUE/GREEN
               CLAY.MINS OR SOMETIMES CALCITE;

  Phenocrysts: PLAGIOCLASE               (    4%)
               Size(mm):          4

               OLIVINE                   (  1-2%)
               Size(mm):        1-2
               SOME PLAG IS GLOMEROCRYSTIC,OL VERY FRESH WITH
               SOME ALTERATION EVIDENT IN OXIDIZED ZONES;

  Replacement: CLAY
               Minerals Replaced: OL
               IN STRONGLY OXIDIZED AREAS OL CONVERTED TO ORANGE
               OR BLUE/GREEN CLAY.MINS;

               CLAY
               BLUE/GREEN FILLS VESICLES;

               CALCITE
               SOME PCES;

               SMECTITE
               BLUE/GREEN IN SOME JOINTS;

               MANGANESE OXIDE
               SPOTS ON PCES 222+229;

  Phenocrysts:                           (   TR%)


Leg : 69    Top/Bottom Interval(mm):  370/ 460  Analyst: Adamson, A.C.
Hole: 505B  Sample Midpoint (m)    :   170.96
Core:   6   Top of Core Depth (m)  :   169.00
Sect:  2    Top of Section Depth(m):   170.87

LITHOLOGY: PLAG-OL-CPX MOD PHYRIC BASALT;
           MASSIVE BASALT;

  Piece No.  : PCE 225 (37-46);

  Texture    : MOD PHYRIC,SIMILAR TO REST OF SECTION EXCEPT FOR
               PRESENCE OF CPX;

  Alteration : FRESH TO MOD

  Phenocrysts: PLAGIOCLASE               (    4%)
               Size(mm):        3-4

               OLIVINE                   (  1-2%)
               Size(mm):        1-2

               CLINOPYROXENE             (   <1%)


    

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