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Core Data from the Deep Sea Drilling Project


Leg : 68    Top/Bottom Interval(mm):   90/ 100  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   264.10   Rock Type: IGNEOUS
Core:  10   Sample Midpoint(m)     :   264.19   Sect/Pc #:  1/PCE 1

ROCK = OL-PLAG-CPX MICROPHYRIC BASALT;
       Texture: VARIOLITIC,MICROPHYRIC
       GRADUAL CHANGE FROM BASALT GLASS W/ VARIOLES
       AROUND PHENOS AND MICROLITES TO COMPLETELY
       VARIOLITIZED GLASS;
       Where sampled: PILLOW
       SECTION THROUGH GLASSY PILLOW MARGIN INTO
       INTERIOR*

Phenocrysts- OLIVINE                   (  1-5%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL
             REPLACED BY SMEC AND IN ONE CASE BY PYRITE;

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,ACICULAR
             LARGER PLAG PHENOS ARE GLOMEROCRYSTS W/ OR W/OUT
             CPX,PLAG ZONALITY-LESS ANORTHITIC RIMS;

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,ACICULAR

             CLINOPYROXENE             (  1-5%)
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL
             MOSTLY IN GLOMEROCRYSTS W/ PLAG ALTHOUGH THERE ARE
             EUHEDRAL PHENOS*

Groundmass - PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE
             Size(mm):     .03-.1  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE               ( 5-10%)
             Size(mm):    .01-.03  Morphology: EUHEDRAL,ACICULAR
             PERCENT IS FOR TOTAL PLAG IN SECTION;

             SPHERULITIC MESOSTASIS    (  >40%)

Alteration - PYRITE
             Location: VESICLES,      Replacing: OLIVINE
             Location: CRACKS

             SMECTITE
             Location: VESICLES,      Replacing: OLIVINE
             Location: CRACKS
             SMECTITE DIFFERS IN COLOR FROM OLIVE-BROWN TO
             OLIVE-GREEN AND GREEN,PARTS OF SMECTITE VEINS (UP
             TO 0.15MM ACROSS) OR THEIR BORDER ZONE ARE FILLED
             LOCALLY W/ PYRITE,PALE BROWN SMECTITE (ALMOST
             COLORLESS IN THIN-SECTION) LOOKS LIKE PALAG-IT IS
             IN THIN VEINS AND RIMS IN GLASS*

Vesicles   -
             Filling: PYRITE,SMEC
             Shape: ROUND




Leg : 68    Top/Bottom Interval(mm): 1200/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   264.10   Rock Type: IGNEOUS
Core:  10   Sample Midpoint(m)     :   265.30   Sect/Pc #:  1/PCE 16

ROCK = PLAG-OL MOD PHYRIC BASALT;
       Texture: MICROPHYRIC,RADIATE;
       Where sampled: PILLOW INTERIOR*

Phenocrysts- OLIVINE
             Size(mm):       .3-1  Morphology: ANHEDRAL

             OLIVINE                   (  1-5%)
             Size(mm):      .1-.3  Morphology: ANHEDRAL
             PERCENT IS FOR TOTAL OL REPORTED IN SECTION*
             PERCENT IS FOR TOTAL PLAG IN SECTION,PLAG ZONALITY
             -LESS ANORTHITIC RIMS;
             PERCENT IS FOR TOTAL CPX IN SECTION,MESOSTASIS IS
             HOLOCRYSTALLINE W/ RADIATING CPX AND SKELETAL
             TI-MT AND SMALL EUHEDRAL OL;

Groundmass - CLINOPYROXENE
             Size(mm):       .3-1  Morphology: SUBHEDRAL,FAN,BOW-TIE

             CLINOPYROXENE
             Size(mm):      .1-.3  Morphology: SUBHEDRAL,FAN,BOW-TIE

             CLINOPYROXENE             (20-40%)
             Size(mm):     .03-.1  Morphology: SUBHEDRAL,FAN,BOW-TIE

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE               (20-40%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL,ACICULAR

             TITANOMAGNETITE           (1-5  %)
             Size(mm):   .03-.1

Alteration - CELADONITE                (  1-5%)
             Location: CRACKS,VEINS   Replacing: OL
             Location: VESICLES

             SMECTITE                  ( .5-1%)
             Location: CRACKS,
             Location: VESICLES

             PYRITE                    (   TR%)
             Location: VESICLES

             FERROUS HYDROX MINS       (   TR%)
             Location: CRACKS,VEINS   Replacing: OL
             Location: VESICLES
             OXIDATION DEVELOPED ALONG CRACKS,NEAR CRACKS
             (SEVERAL MM) HYDROXIDES REPLACED THE SMEC*

Vesicles   -
             Size(mm):    .1-.3
             Percent:  .5-1
             Location: CORES,RIMS
             Filling: CELADON,SMEC,
             Shape: ROUND

             Filling: FE.HYDRX,PYRITE
             FE OXIDES AND RED CELADONITE IN CORES OF VESICLES,
             BRIGHT GREEN CELADON FILLS WHOLE VESICLES OR
             OUTER RIMS,PALE BROWN OR BROWN SMECTITE FILLS SOME
             CORES OF THE VESICLES*




Leg : 68    Top/Bottom Interval(mm):  740/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   264.10   Rock Type: IGNEOUS
Core:  10   Sample Midpoint(m)     :   266.34   Sect/Pc #:  2/PCE 30

ROCK = OL MOD MICROPHYRIC BASALT
       SAME AS 10-1-120,OXIDATION DEVELOPED IN NARROW
       ZONES,IT IS REPRESENTED BY APPEARANCE OF BRIGHT
       BROWN CELADONITES IN CORES OF VESICLES AND
       INTERIOR PARTS OF OL PSEUDOMORPHS;
       Texture: MICROPHYRIC,RADIATE;
       Where sampled: PILLOW INTERIOR*

Phenocrysts- OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL

             OLIVINE                   (  1-5%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL
             PERCENT IS FOR TOTAL OL*

Groundmass - PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE               (20-40%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL,ACICULAR
             PERCENT IS FOR TOTAL PLAG,APPROX COMP BYTOWNITE,
             NORMALLY ZONED;

             CLINOPYROXENE
             Size(mm):       .3-1  Morphology: SUBHEDRAL,FAN,BOW-TIE

             CLINOPYROXENE
             Size(mm):      .1-.3  Morphology: SUBHEDRAL,FAN,BOW-TIE

             CLINOPYROXENE             (20-40%)
             Size(mm):     .03-.1  Morphology: SUBHEDRAL,FAN,BOW-TIE

             TITANOMAGNETITE           ( 5-10%)
             Size(mm):     .03-.1

Alteration - CELADON
             Location: CRACKS+        Replacing: OL
             Location: VESICLES

             FERROUS HYDROX MINS
             Location: CRACKS+        Replacing: OL
             Location: VESICLES

Vesicles   -
             Size(mm):    .1-.3
             Percent:  .5-1
             Filling: CELADONITE




Leg : 68    Top/Bottom Interval(mm):  850/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   267.30   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   268.15   Sect/Pc #:  1/PCE 49

ROCK = APHYRIC BASALT
       ZONES-1)GLASS PARTLY PALAGONITIZED,PALAGONITE
       REPLACED BY SMEC,2)VARIOLITIC GLASS,3)VARIOLITIC
       DEVITRIFIED BASALT;
       Texture: APHYRIC,VARIOLITIC;
       Where sampled: PILLOW RIM*

Groundmass - OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL

             OLIVINE                   (  1-5%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL
             PERCENT IS FOR TOTAL OL;

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE               ( 5-10%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL,ACICULAR
             PERCENT IS FOR TOTAL PLAG,NORMALLY ZONED;

             CLINOPYROXENE
             Size(mm):       .3-1  Morphology: SUBHEDRAL

             CLINOPYROXENE
             Size(mm):      .1-.3  Morphology: SUBHEDRAL

             CLINOPYROXENE             ( 5-10%)
             Size(mm):     .03-.1  Morphology: SUBHEDRAL
             PERCENT IS FOR TOTAL CPX;

             GLASS                     (20-40%)

             SPHERULITIC MESOSTASIS    (  >40%)

             TITANOMAGNETITE           (  1-5%)

Alteration - CELADON                   ( 5-10%)
             Location: CRACKS+        Replacing: OL
             Location: VESICLES

             SMECTITE
             Replacing: PALAG

             PALAGONITE                ( 5-10%)
             Replacing: GLASS

Vesicles   -
             Percent:  .5-1
             Filling: CELADON+FE.OX+
             Shape: ROUND

             Filling: MN.OXIDES
             SOME VESICLES HAVE CORES WITH HYDROXIDES OF FE-
             MN?*




Leg : 68    Top/Bottom Interval(mm):  870/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   267.30   Rock Type: IGNEOUS
Core:  11   Sample Midpoint(m)     :   269.67   Sect/Pc #:  2/PCE 67

ROCK = OL SPARSELY MICROPHYRIC BASALT
       MESOSTASIS PARTLY RADIATED,HOLOXTLLINE;
       Texture: SPARSELY PHYRIC*

Phenocrysts- OLIVINE
             Size(mm):    .01-.03  Morphology: EUHEDRAL

             OLIVINE
             Size(mm):     .03-.1  Morphology: EUHEDRAL

             OLIVINE
             Size(mm):      .1-.3  Morphology: EUHEDRAL

             OLIVINE                   ( .5-1%)
             Size(mm):       .3-1  Morphology: EUHEDRAL
             PERCENT IS FOR TOTAL OL*

Groundmass - PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE
             Size(mm):     .03-.1  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE               (   50%)
             Size(mm):    .01-.03  Morphology: EUHEDRAL,ACICULAR
             PERCENT IS FOR TOTAL PLAG;

             CLINOPYROXENE
             Size(mm):       .3-1  Morphology: SUBHEDRAL

             CLINOPYROXENE
             Size(mm):      .1-.3  Morphology: SUBHEDRAL

             CLINOPYROXENE
             Size(mm):     .03-.1  Morphology: SUBHEDRAL

             CLINOPYROXENE             (20-40%)
             Size(mm):    .01-.03  Morphology: SUBHEDRAL
             PERCENT IS FOR TOTAL CPX;

             TITANOMAGNETITE
             Size(mm):      .1-.3

             TITANOMAGNETITE           ( 5-10%)
             Size(mm):     .03-.1
             PERCENT IS FOR TOTAL TITANO-MAGN*

Alteration - CELADON
             Location: VESICLES+      Replacing: OL
             Location: CRACKS
             FE AND MN OXIDES CONTAMINATE CELADONITE IN ZONES
             NEAR CRACKS;

             SMECTITE
             Location: VESICLES+      Replacing: OL
             Location: CRACKS

Vesicles   -
             Size(mm):     .3-1
             Filling: CELADON,SMEC
             FILLINGS OF VESICLES ARE CONCENTRIC,SOME OF CORES
             OF FILLINGS ARE OLIVE-BROWN SMEC,CELADONITE IS IN
             THE RIMS OR FILLS THE WHOLE VESICLE*




Leg : 68    Top/Bottom Interval(mm):  590/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   273.10   Rock Type: IGNEOUS
Core:  12   Sample Midpoint(m)     :   273.69   Sect/Pc #:  1/PCE 95

ROCK = APHYRIC BASALT
       Texture: APHYRIC,VARIOLITIC*

Groundmass - OLIVINE                   (  1-5%)
             Size(mm):       .3-1

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               ( 5-10%)
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG;

             CLINOPYROXENE             (  1-5%)
             Size(mm):       .3-1  Morphology: SUBHEDRAL,ANHEDRAL

             SPHERULITIC MESOSTASIS    (   90%)

             TITANOMAGNETITE
             Size(mm):      .1-.3  Morphology: SKELETAL

             TITANOMAGNETITE           (  1-5%)
             Size(mm):     .03-.1  Morphology: SKELETAL
             PERCENT IS FOR TOTAL TITANO-MAGN*

Alteration - CELADON
             Replacing: OL

             SMECTITE
             Replacing: OL
             YELLOW SMECTITE IN OL PSEUDOMORPHS IN PART OF THE
             SECTION,THE OTHER PART CONTAINS GREEN CELADONITE
             BOTH IN PSEUDOMORPHS AND VESICLES, SOME OF
             MATERIAL OXIDIZED(BRIGHT BROWN CELADONITE)*

Vesicles   -
             Percent:  .5-1
             Filling: CELADONITE
             Shape: ROUND




Leg : 68    Top/Bottom Interval(mm):  740/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   273.10   Rock Type: IGNEOUS
Core:  12   Sample Midpoint(m)     :   273.84   Sect/Pc #:  1/PCE 96

ROCK = APHYRIC BASALT
       Texture: APHYRIC,VARIOLITIC;
       Where sampled: PILLOW RIM-PILLOW INTERIOR*

Groundmass - OLIVINE                   ( .5-1%)
             Size(mm):       .3-1  Morphology: EUHEDRAL
             PERCENT IS FOR TOTAL O6;

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,ACICULAR

             PLAGIOCLASE               ( 5-10%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL,ACICULAR
             PERCENT IS FOR TOTAL PLAG,NORMALLY ZONED;

             CLINOPYROXENE
             Morphology: EUHEDRAL,ANHEDRAL

             CLINOPYROXENE
             Morphology: EUHEDRAL,ANHEDRAL

             CLINOPYROXENE             (  1-5%)
             Morphology: EUHEDRAL,ANHEDRAL
             PERCENT IS FOR TOTAL CPX;

             TITANOMAGNETITE           (  1-5%)

             SPHERULITIC MESOSTASIS    (  >70%)
             GRADUAL CHANGING IN MESOSTASIS FROM VARIOLITIC
             GLASS TO DEVITRIFIED*

Vesicles   -
             Size(mm):   .03-.1
             Percent:  .5-1
             Filling: SMEC,CELADON
             Shape: ROUND
             VESICLES ARE FILLED(CRACKS,TOO)IN GLASSY PART WITH
             OLIVE GREEN SMECTITE,IN DEVITRIFIED PART THE
             FILLING CONSISTS OF GREEN CELADONITE*




Leg : 68    Top/Bottom Interval(mm): 1290/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   273.10   Rock Type: IGNEOUS
Core:  12   Sample Midpoint(m)     :   274.39   Sect/Pc #:  1/PCE 103

ROCK = APHYRIC BASALT;
       Texture: APHYRIC,VARIOLITIC;
       Where sampled: PILLOW INTERIOR*

Groundmass - OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL

             OLIVINE                   (  1-5%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL
             PERCENT IS FOR TOTAL OL;

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (10-20%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG;

             CLINOPYROXENE             ( .5-1%)
             Size(mm):      .1-.3  Morphology: SUBHEDRAL

             SPHERULITIC MESOSTASIS    (70-80%)

             TITANOMAGNETITE           (  1-5%)

Vesicles   -
             Size(mm):    .1-.3
             Percent:    TR
             Filling: SMEC,CELADON
             Shape: ROUND
             PART OF CELADONITE VESICLES AND PSEUDOMORPHS AFTER
             OL OXIDIZED,HAVE BRIGHT BROWN COLOR INSTEAD OF
             GREEN*




Leg : 68    Top/Bottom Interval(mm):  760/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   273.10   Rock Type: IGNEOUS
Core:  12   Sample Midpoint(m)     :   275.36   Sect/Pc #:  2/PCE 115

ROCK = APHYRIC DOLERITE;
       Texture: APHYRIC,OPHITIC;
       Where sampled: PILLOW INTERIOR*

Groundmass - OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL

             OLIVINE                   (  1-5%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL
             PERCENT IS FOR TOTAL OL;

             PLAGIOCLASE
             Size(mm):       3-10  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (   50%)
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG,RARE MEGACRYSTS OF PLAG
             (GLOMEROCRYSTS)WITH ABUNDANT GLASS INCLUSIONS;

             CLINOPYROXENE
             Size(mm):       .3-1  Morphology: ANHEDRAL,SUBHEDRAL

             CLINOPYROXENE             (  >40%)
             Size(mm):      .1-.3  Morphology: ANHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL CPX;

             TITANOMAGNETITE           ( 5-10%)
             Size(mm):      .1-.3

Alteration - CELADON
             Location: VESICLES       Replacing: OL
             GREEN CELADONITE LOCALLY IS REPLACED BY BRIGHT
             BROWN MATERIAL(OXIDATION)*

Vesicles   -
             Size(mm):    .1-.3
             Filling: ARAGONITE
             Shape: ROUND




Leg : 68    Top/Bottom Interval(mm):  470/   0  Describer: Cann, J.
Hole: 501   Top of Core Depth(m)   :   280.10   Rock Type: IGNEOUS
Core:  13   Sample Midpoint(m)     :   280.57   Sect/Pc #:  1/PCE 122

ROCK = APHYRIC BASALT
       A GOOD HOLOXTLLINE BASALT,SOMEWHAT ALTERED,BUT NOT
       EXTENSIVELY SO,WELL-DEVELOPED PATCHES OF
       THOLEIITIC MESOSTASIS;
       Texture: APHYRIC,HOLOXTLLINE
       HOLOXTLLINE FLOW INTERIOR,SUBOPHITIC PYX-PLAG
       RELATIONSHIP,TI-MAGN ASSOCIATED WITH MESOSTASIS;
       Where sampled: MASSIVE FLOW*

Groundmass - OLIVINE                   (  1-5%)
             Size(mm):      .1-.3  Morphology: GRANULAR

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: SUBHEDRAL

             PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: SUBHEDRAL

             PLAGIOCLASE               (   50%)
             Size(mm):     .03-.1  Morphology: SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG,APPROX COMP AN50-70;

             PLAGIOCLASE               (  1-5%)
             Size(mm):        1-3  Morphology: SUBHEDRAL
             MEGACRYSTS,NO GOOD SECTION FOR APPROX COMP;

             CLINOPYROXENE
             Size(mm):       .3-1  Morphology: ANHEDRAL

             CLINOPYROXENE             (20-40%)
             Size(mm):      .1-.3  Morphology: ANHEDRAL

             TITANOMAGNETITE
             Size(mm):      .1-.3  Morphology: EUHEDRAL-SKELETAL

             TITANOMAGNETITE           ( 5-10%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL-SKELETAL
             TI-MAGN OPTICALLY HOMOGENEOUS AND ISOTROPIC;

             MESOSTASIS                (10-20%)
             Size(mm):       .004  Morphology: INTERSTITIAL
             PYRITE FORMS GRAINS IN MESOSTASIS PATCHES-LATE
             MAGMATIC,APPARENTLY*

Alteration - SMECTITE                  ( 5-10%)
             Replacing: OL,MESOSTASIS
             FIBROUS*

Vesicles   -
             Percent:  .5-1
             Filling: SMECTITE
             Shape: ROUND




Leg : 68    Top/Bottom Interval(mm): 1470/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   280.10   Rock Type: IGNEOUS
Core:  13   Sample Midpoint(m)     :   281.57   Sect/Pc #:  1/PCE 134

ROCK = APHYRIC DOLERITE;
       Texture: APHYRIC,OPHITIC*

Groundmass - OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             OLIVINE                   (  1-5%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL OL,NO FRESH OL;

             PLAGIOCLASE               (   50%)
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             CLINOPYROXENE             (20-40%)
             Size(mm):       .3-1  Morphology: ANHEDRAL,SUBHEDRAL

             TITANOMAGNETITE           (  1-5%)
             Size(mm):      .1-.3  Morphology: SKELETAL

Alteration - CELADON
             Replacing: OL

             SMECTITE
             Replacing: OL

             OXIDES
             Replacing: OL

Vesicles   -
             Size(mm):     .3-1
             Shape: ROUND

             Size(mm):    .1-.3
             Percent:  .5-1
             Filling: CELADON,SMEC,
             Shape: ROUND

             Filling: OXIDES
             PERCENT AND FILLING ARE FOR ALL VESICLES,CENTRAL
             PARTS OF VESICLES(AND OL PSEUDOS)FILLED LOCALLY
             WITH LIGHT BROWN SMEC AND/OR OXIDES,SOME OF
             FILLINGS OXIDIZED*




Leg : 68    Top/Bottom Interval(mm): 1120/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   280.10   Rock Type: IGNEOUS
Core:  13   Sample Midpoint(m)     :   282.72   Sect/Pc #:  2/PCE 144

ROCK = APHYRIC DOLERITE;
       Texture: APHYRIC,OPHITIC*

Groundmass - OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             OLIVINE                   (  1-5%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL OL,OL COMPLETELY CONVERTED
             INTO CELADONITE AND/OR SMECTITE;

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (   50%)
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG;

             CLINOPYROXENE             (20-40%)
             Size(mm):       .3-1  Morphology: SUBHEDRAL,ANHEDRAL

             TITANOMAGNETITE           (  1-5%)
             Size(mm):      .1-.3  Morphology: SKELETAL

Alteration - CELADON
             Location: VESICLES       Replacing: OL

             SMECTITE
             Location: VESICLES       Replacing: OL
             SMEC IS MAINLY IN CENTRAL PARTS OF SOME VESICLES
             OR OL PSEUDOMORPHS*

Vesicles   -
             Size(mm):    .1-.3
             Percent:  .5-1
             Filling: CELADON,SMEC
             Shape: ROUND




Leg : 68    Top/Bottom Interval(mm):  610/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   283.10   Rock Type: IGNEOUS
Core:  14   Sample Midpoint(m)     :   283.71   Sect/Pc #:  1/PCE 152

ROCK = APHYRIC DOLERITE;
       Texture: APHYRIC,DOLERITIC;
       Where sampled: PILLOW INTERIOR*

Groundmass - OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             OLIVINE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             OLIVINE                   ( 5-10%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL OL;

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (  >40%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG;

             CLINOPYROXENE
             Size(mm):       .3-1  Morphology: SUBHEDRAL,ANHEDRAL

             CLINOPYROXENE
             Size(mm):      .1-.3  Morphology: SUBHEDRAL,ANHEDRAL

             CLINOPYROXENE             (20-40%)
             Size(mm):     .03-.1  Morphology: SUBHEDRAL,ANHEDRAL
             PERCENT IS FOR TOTAL CPX;

             TITANOMAGNETITE           (  1-5%)
             Size(mm):     .03-.1  Morphology: SKELETAL

Alteration - SMECTITE
             Location: VESICLES       Replacing: OL
             OLIVE GREEN*

Vesicles   -
             Size(mm):    .1-.3
             Percent:  .5-1
             Filling: SMEC
             Shape: ROUND




Leg : 68    Top/Bottom Interval(mm): 1180/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   283.10   Rock Type: IGNEOUS
Core:  14   Sample Midpoint(m)     :   285.78   Sect/Pc #:  2/PCE 170

ROCK = APHYRIC BASALT;
       Texture: APHYRIC,DOLERITIC;
       Where sampled: PILLOW INTERIOR*

Groundmass - OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             OLIVINE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             OLIVINE                   ( 5-10%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL OL;

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (  >40%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG;

             CLINOPYROXENE
             Size(mm):       .3-1  Morphology: SUBHEDRAL,ANHEDRAL

             CLINOPYROXENE
             Size(mm):      .1-.3  Morphology: SUBHEDRAL,ANHEDRAL

             CLINOPYROXENE             (20-40%)
             Size(mm):     .03-.1  Morphology: SUBHEDRAL,ANHEDRAL
             PERCENT IS FOR TOTAL CPX;

             TITANOMAGNETITE
             Size(mm):     .03-.1  Morphology: SKELETAL

Alteration - SMECTITE
             Location: VESICLES       Replacing: OL
             OLIVE GREEN*

Vesicles   -
             Size(mm):    .1-.3
             Percent:  .5-1
             Filling: SMEC
             Shape: ROUND




Leg : 68    Top/Bottom Interval(mm): 1460/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   283.10   Rock Type: IGNEOUS
Core:  14   Sample Midpoint(m)     :   286.06   Sect/Pc #:  2/PCE 175

ROCK = PLAG-OL-CPX PHYRIC BASALT;
       Texture: PHYRIC,INTERSERTAL;
       Where sampled: PILLOW INTERIOR*

Phenocrysts- PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             OLIVINE                   ( .5-1%)
             Size(mm):       .3-1  Morphology: EUHEDRAL

             CLINOPYROXENE             ( .5-1%)
             Size(mm):       .3-1  Morphology: SUBHEDRAL,ANHEDRAL
             PYROXENE PHENOS ONLY IN GLOMEROCRYSTS WITH PLAG*

Groundmass - PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (10-20%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG IN SECTION,NORMALLY
             ZONED;

             SPHERULITIC MESOSTASIS    (   80%)

             TITANOMAGNETITE
             Size(mm):     .03-.1

             TITANOMAGNETITE           (  1-5%)
             Size(mm):    .01-.03
             PERCENT IS FOR TOTAL TITANO-MAGN*

Alteration - CELADON                   (  1-5%)
             Location: VESICLES       Replacing: OL
             BRIGHT GREEN OR BRIGHT BROWN,THE LATTER MOSTLY IN
             CENTRAL PARTS;

             HYDROXIDE                 (   TR%)
             Location: VESICLES

             PYRITE                    (   TR%)

Vesicles   -
             Percent:  .5-1
             Filling: CELADON
             Shape: ROUND




Leg : 68    Top/Bottom Interval(mm): 1350/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   283.10   Rock Type: IGNEOUS
Core:  14   Sample Midpoint(m)     :   287.45   Sect/Pc #:  3/PCE 188

ROCK = PLAG-OL MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,VARIOLITIC;
       Where sampled: PILLOW RIM*

Phenocrysts- OLIVINE                   (  1-5%)
             Size(mm):       .3-1  Morphology: EUHEDRAL

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

Groundmass - PLAGIOCLASE               (10-20%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG IN SECTION NORMALLY
             ZONED;

             SPHERULITIC MESOSTASIS    (   80%)

             TITANOMAGNETITE           (   TR%)

             OTHER                     ( .5-1%)
             Morphology: EUHEDRAL
             CR-SPINEL*

Alteration - SMECTITE
             Replacing: OL
             COLORLESS;

             FERROUS OXIDE
             Replacing: OL




Leg : 68    Top/Bottom Interval(mm):  210/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   283.10   Rock Type: IGNEOUS
Core:  14   Sample Midpoint(m)     :   287.81   Sect/Pc #:  4/PCE 191

ROCK = PLAG-OL MOD PHYRIC BASALT;
       Texture: MOD PHYRIC*

Phenocrysts- OLIVINE                   ( .5-1%)
             Size(mm):       .3-1  Morphology: EUHEDRAL

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (10-20%)
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG IN SECTION*

Groundmass - SPHERULITIC MESOSTASIS    (   80%)

             TITANOMAGNETITE           (   TR%)
             Size(mm):     .03-.1  Morphology: SKELETAL

             OTHER                     (   TR%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL
             CR-SPINEL;

             CLINOPYROXENE             (    0%)

Alteration - SMECTITE
             Replacing: OL
             ALMOST COLORLESS*

Vesicles   -
             Percent:     0




Leg : 68    Top/Bottom Interval(mm):  180/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   292.10   Rock Type: IGNEOUS
Core:  15   Sample Midpoint(m)     :   296.78   Sect/Pc #:  4/PCE 252

ROCK = PLAG-OL MOD PHYRIC BASALT
       CONTACT BETWEEN GLASSY AND VARIOLITIC PARTS,IN
       GLASSY PART THERE ARE PHENOS OF FRESH OL AND PLAG;
       Texture: MOD PHYRIC,VARIOLITIC,INTERSERTAL;
       Where sampled: PILLOW RIM*

Phenocrysts- OLIVINE                   (  1-5%)
             Size(mm):       .3-1  Morphology: EUHEDRAL

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL

Groundmass - PLAGIOCLASE               (10-20%)
             Size(mm):       .3-1  Morphology: EUHEDRAL
             PERCENT IS FOR TOTAL PLAG IN SECTION;

             CLINOPYROXENE             (    0%)

             SPHERULITIC MESOSTASIS    (   90%)

             OTHER                     (   TR%)
             Size(mm):       .3-1
             CR-SPINEL;

             TITANOMAGNETITE
             Size(mm):     .03-.1

             TITANOMAGNETITE           (  1-5%)
             Size(mm):    .01-.03
             PERCENT IS FOR TOTAL TITANO-MAGN*

Alteration - SMECTITE
             Replacing: OL
             ALMOST COLORLESS*

Vesicles   -
             Percent:     0




Leg : 68    Top/Bottom Interval(mm): 1180/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   301.10   Rock Type: IGNEOUS
Core:  16   Sample Midpoint(m)     :   302.28   Sect/Pc #:  1/PCE 274

ROCK = PLAG-OL MOD PHYRIC BASALT;
       Texture: MOD PHYRIC;
       Where sampled: PILLOW INTERIOR*

Phenocrysts- OLIVINE                   (  1-5%)
             Size(mm):       .3-1  Morphology: EUHEDRAL

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

Groundmass - PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (   50%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG IN SECTION;

             CLINOPYROXENE
             Size(mm):     .03-.1  Morphology: FAN

             CLINOPYROXENE             (20-40%)
             Size(mm):    .01-.03  Morphology: FAN
             PERCENT IS FOR TOTAL CPX;

             TITANOMAGNETITE
             Size(mm):     .03-.1  Morphology: SKELETAL

             TITANOMAGNETITE           (  1-5%)
             Size(mm):    .01-.03  Morphology: SKELETAL
             PERCENT IS FOR TOTAL TITANO-MAGN;

             OTHER                     (   TR%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL
             CR-SPINEL*

Alteration - SMECTITE
             Replacing: OL
             IN OXIDIZED ZONE INSTEAD OF COLORLESS SMECTITE
             BRIGHT YELLOW OR BROWN CELADONITE AND CALCITE
             OCCUR(WITH HYDROXIDES),SMECTITE PARTLY PRESERVED
             IN INTERIOR PARTS OF OL PSEUDOS IN OXIDIZED ZONE;

             CELADON
             Replacing: OL

             HYDROXIDE
             Replacing: OL

             CALCITE
             Replacing: OL

Vesicles   -
             Location:     0




Leg : 68    Top/Bottom Interval(mm):  480/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   305.10   Rock Type: IGNEOUS
Core:  17   Sample Midpoint(m)     :   305.58   Sect/Pc #:  1/PCE 288

ROCK = PLAG-OL MOD PHYRIC BASALT-DOLERITE
       SEE ICD FOR MORE FULL DESCRIPTION;
       Texture: MOD PHYRIC,DOLERITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL,ANHEDRAL

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

Groundmass - OLIVINE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL,ANHEDRAL

             OLIVINE                   ( 5-10%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL,ANHEDRAL
             PERCENT IS FOR TOTAL OL IN SECTION;

             PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):    .01-.03  Morphology: EUHEDRAL,SUBHEDRAL

             CLINOPYROXENE
             Size(mm):      .1-.3  Morphology: SUBHEDRAL,FAN

             CLINOPYROXENE
             Size(mm):     .03-.1  Morphology: SUBHEDRAL,FAN

             TITANOMAGNETITE
             Size(mm):     .03-.1

             TITANOMAGNETITE           (  1-5%)
             Size(mm):    .01-.03
             PERCENT IS FOR TOTAL TITANO-MAGN;

             OTHER                     ( .5-1%)
             Size(mm):      .1-.3
             CR-SPINEL*

Alteration - SMECTITE                  (  1-5%)
             IN THE OXIDIZED ZONE COLORLESS SMEC REPLACED BY
             BRIGHT YELLOW OR BROWN CELADONITE +/- OXIDES +
             TRACE OF PYRITE;

             CELADON                   (  1-5%)

             PYRITE                    (   TR%)

Vesicles   -
             Percent:     0




Leg : 68    Top/Bottom Interval(mm):  860/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   305.10   Rock Type: IGNEOUS
Core:  17   Sample Midpoint(m)     :   305.96   Sect/Pc #:  1/PCE 292

ROCK = PLAG-OL MOD PHYRIC BASALT-DOLERITE;
       Texture: MOD PHYRIC,DOLERITIC*

Phenocrysts- OLIVINE
             Size(mm):        1-3  Morphology: EUHEDRAL,ANHEDRAL

             OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL,ANHEDRAL

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

Groundmass - OLIVINE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,ANHEDRAL

             OLIVINE                   ( 5-10%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,ANHEDRAL
             PERCENT IS FOR TOTAL OL IN SECTION;

             PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (   50%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG IN SECTION;

             CLINOPYROXENE
             Size(mm):      .1-.3  Morphology: SUBHEDRAL,ANHEDRAL

             CLINOPYROXENE
             Size(mm):     .03-.1  Morphology: SUBHEDRAL,ANHEDRAL
             PERCENT IS FOR TOTAL TITANO-MAGN;

             OTHER                     (   TR%)
             Morphology: EUHEDRAL
             CR-SPINEL*

Alteration - SMECTITE
             LIGHT OLIVE GREEN SMECTITE,GOOD MICA-LIKE XTLS
             WITH RELICS OF FRESH OL*

Vesicles   -
             Percent:     0




Leg : 68    Top/Bottom Interval(mm): 1050/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   305.10   Rock Type: IGNEOUS
Core:  17   Sample Midpoint(m)     :   307.65   Sect/Pc #:  2/PCE 309

ROCK = PLAG-OL MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,VARIOLITIC;
       Where sampled: FLOW INTERIOR*

Phenocrysts- OLIVINE                   (  1-5%)
             Size(mm):       .3-1  Morphology: EUHEDRAL

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

Groundmass - PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (10-20%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG;

             CLINOPYROXENE             (    0%)

             SPHERULITIC MESOSTASIS    (   80%)

             OTHER                     (   TR%)
             CR-SPHINEL*

Alteration - SMECTITE
             Replacing: OL
             VERY LIGHT PALE SMEC*

Vesicles   -
             Percent:     0




Leg : 68    Top/Bottom Interval(mm):  100/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   305.10   Rock Type: IGNEOUS
Core:  17   Sample Midpoint(m)     :   308.20   Sect/Pc #:  3/PCE 315

ROCK = PLAG-OL MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,INTERSERTAL;
       Where sampled: PILLOW INTERIOR*

Phenocrysts- OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Morphology: EUHEDRAL,SUBHEDRAL

Groundmass - OLIVINE                   (  1-5%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL OL IN SECTION;

             PLAGIOCLASE               (10-20%)
             Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG IN SECTION;

             CLINOPYROXENE             (  1-5%)
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL,ANHEDRAL

             SPHERULITIC MESOSTASIS    (   80%)

             TITANOMAGNETITE
             Size(mm):     .03-.1  Morphology: SKELETAL

             TITANOMAGNETITE           (  1-5%)
             Size(mm):    .01-.03  Morphology: SKELETAL
             PERCENT IS FOR TOTAL TITANO-MAGN*

Alteration - CELADON
             Location: VESICLES       Replacing: OL
             IN PART OF THE SECTION,GREEN AND BRIGHT BROWN
             (OXIDATION);

             SMECTITE
             Location: VESICLES       Replacing: OL
             ALMOST COLORLESS*

Vesicles   -
             Size(mm):   .03-.1
             Percent:    TR
             Filling: CELADON,SMEC




Leg : 68    Top/Bottom Interval(mm): 1180/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   310.10   Rock Type: IGNEOUS
Core:  18   Sample Midpoint(m)     :   311.28   Sect/Pc #:  1/PCE 346

ROCK = PLAG-CPX-OL MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,INTERSERTAL;
       Where sampled: PILLOW INTERIOR*

Phenocrysts- OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             CLINOPYROXENE
             Size(mm):       .3-1  Morphology: SUBHEDRAL,ANHEDRAL

Groundmass - OLIVINE                   (  1-5%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL OL IN SECTION;

             PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (20-40%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG IN SECTION;

             CLINOPYROXENE
             Size(mm):      .1-.3  Morphology: SUBHEDRAL,ANHEDRAL

             CLINOPYROXENE             (  1-5%)
             Size(mm):     .03-.1  Morphology: SUBHEDRAL,ANHEDRAL
             PERCENT IS FOR TOTAL CPX IN SECTION;

             SPHERULITIC MESOSTASIS    (20-40%)

             TITANOMAGNETITE
             Size(mm):     .03-.1  Morphology: SKELETAL

             TITANOMAGNETITE           (  1-5%)
             Size(mm):    .01-.03  Morphology: SKELETAL
             PERCENT IS FOR TOTAL TITANO-MAGN*

Alteration - SMECTITE
             Replacing: OL

             CELADON
             Location: VESICLES       Replacing: OL
             ONLY IN OXIDIZED PART OF SECTION,GREEN AND BRIGHT
             BROWN*

Vesicles   -
             Size(mm):   .03-.1
             Percent:    TR
             Filling: CELADON
             Shape: ROUND




Leg : 68    Top/Bottom Interval(mm):  310/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   310.10   Rock Type: IGNEOUS
Core:  18   Sample Midpoint(m)     :   311.91   Sect/Pc #:  2/PCE 354

ROCK = PLAG MOD PHYRIC BASALT;
       Texture: MOD PHYRIC,VARIOLITIC;
       Where sampled: PILLOW RIM*

Phenocrysts- PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

Groundmass - OLIVINE                   ( .5-1%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL

             PLAGIOCLASE               ( 5-10%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG IN SECTION;

             CLINOPYROXENE             ( .5-1%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             GLASS                     (10-20%)

             SPHERULITIC MESOSTASIS    (   80%)

Alteration - SMECTITE
             Location: VEIN           Replacing: OL,GLASS

             ZEOLITE
             Location: VEIN
             A ZEOLITE(?)MINERAL IN A RATHER THICK VEIN WITH
             SMEC,IT LOOKS LIKE ANALCIME,HAS EXTREMELY LOW
             BIREFRINGENCE(.001)AND FORMS SECTORS AND TWINS*




Leg : 68    Top/Bottom Interval(mm):  890/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   310.10   Rock Type: IGNEOUS
Core:  18   Sample Midpoint(m)     :   312.49   Sect/Pc #:  2/PCE 360

ROCK = APHYRIC BASALT;
       Texture: APHYRIC,MICRODOLERITIC;
       Where sampled: PILLOW INTERIOR*

Groundmass - OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             OLIVINE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             OLIVINE                   (  1-5%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL OL;

             PLAGIOCLASE
             Size(mm):        1-3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             PLAGIOCLASE               (20-40%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL PLAG;

             CLINOPYROXENE
             Size(mm):       .3-1  Morphology: SUBHEDRAL,ANHEDRAL

             CLINOPYROXENE
             Size(mm):      .1-.3  Morphology: SUBHEDRAL,ANHEDRAL

             CLINOPYROXENE             (10-20%)
             Size(mm):     .03-.1  Morphology: SUBHEDRAL,ANHEDRAL
             PERCENT IS FOR TOTAL CPX;

             SPHERULITIC MESOSTASIS

             TITANOMAGNETITE
             Size(mm):     .03-.1

             TITANOMAGNETITE           (  1-5%)
             Size(mm):    .01-.03
             PERCENT IS FOR TOTAL TITANO-MAGN*

Alteration - SMECTITE
             Replacing: OL
             OLIVE-GREEN;

             FERROUS HYDROX MINS
             Location: VEINS
             XTLS OF HEMATITE NEAR VEIN*




Leg : 68    Top/Bottom Interval(mm):  680/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   319.10   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   319.78   Sect/Pc #:  1/PCE 371

ROCK = PLAG-OL-CPX MOD PHYRIC BASALT
       THERE ARE TWO THIN SECTIONS;
       Texture: MOD PHYRIC;
       Where sampled: PILLOW RIM*

Phenocrysts- OLIVINE                   ( .5-1%)
             Size(mm):       .3-1  Morphology: EUHEDRAL
             REPLACED BY OLIVE GREEN SMEC;

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL

             CLINOPYROXENE             ( .5-1%)
             Size(mm):       .3-1

Groundmass - PLAGIOCLASE               ( 5-10%)
             Size(mm):      .1-.3  Morphology: EUHEDRAL
             PERCENT IS FOR TOTAL PLAG IN SECTION;

             ALTERED GLASS             (  >90%)
             Morphology: EUHEDRAL,SUBHEDRAL
             ALTERED BY DARK BROWN SMEC*

Alteration - SMECTITE
             Location: VEINS          Replacing: OL,GLASS




Leg : 68    Top/Bottom Interval(mm):  190/   0  Describer: Pertsev, N.
Hole: 501   Top of Core Depth(m)   :   319.10   Rock Type: IGNEOUS
Core:  19   Sample Midpoint(m)     :   320.79   Sect/Pc #:  2/PCE 382

ROCK = PLAG-OL-CPX MOD PHYRIC BASALT
       THE SECOND THIN SECTION-STRONGLY ALTERED
       GROUNDMASS(SMEC,OXIDES);
       Texture: MOD PHYRIC,MICRODOLERITIC;
       Where sampled: PILLOW INTERIOR*

Phenocrysts- OLIVINE
             Size(mm):       .3-1  Morphology: EUHEDRAL

             PLAGIOCLASE
             Size(mm):       .3-1  Morphology: EUHEDRAL

             CLINOPYROXENE
             Size(mm):       .3-1  Morphology: EUHEDRAL,SUBHEDRAL

Groundmass - OLIVINE
             Size(mm):      .1-.3  Morphology: EUHEDRAL

             OLIVINE                   (  1-5%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL
             PERCENT IS FOR TOTAL OL IN SECTION;

             PLAGIOCLASE
             Size(mm):      .1-.3  Morphology: EUHEDRAL

             PLAGIOCLASE               (10-20%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL
             PERCENT IS FOR TOTAL PLAG IN SECTION;

             CLINOPYROXENE
             Size(mm):      .1-.3  Morphology: EUHEDRAL,SUBHEDRAL

             CLINOPYROXENE             (  1-5%)
             Size(mm):     .03-.1  Morphology: EUHEDRAL,SUBHEDRAL
             PERCENT IS FOR TOTAL CPX IN SECTION;

             SPHERULITIC MESOSTASIS    (   85%)

             TITANOMAGNETITE           (  1-5%)
             Size(mm):    .01-.03

Alteration - SMECTITE
             Replacing: OL




    

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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