Leg : 45 Top/Bottom Interval(mm): 200/ 250 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 117.20 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 125.39 Sect/Pc #: 6/PCE 3
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: PORPHYRITIC
GROUNDMASS SUBVARIOLITIC AND INTERSERTAL*
Phenocrysts- PLAGIOCLASE ( 7%)
Size(mm): 0.2-5.0 Morphology: SUBHEDRAL
SOME PHENOS CONTAIN GLASS RELICTS;
OLIVINE ( 1%)
Size(mm): 0.1-0.6 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 40%)
Morphology: QUENCH LATHS,SKELETAL
CLINOPYROXENE ( TR%)
OLIVINE ( 2%)
MICROCRYST GROUNDMASS ( 50%)
INCLUDES MAGN+CPX,ALTERED TO CHLORITE+CLAY.MINS*
Alteration - CHLORITE
Location: VESICLES Replacing: MICROXLN
CLAY MINERALS
Location: VESICLES Replacing: MICROXLN
Vesicles -
Filling: GLASS,CHLORITE,
Filling: CLAY.MINS
GLASS IS DEVITRIFIED, CLAY IS YELLOW-BROWN*
Leg : 45 Top/Bottom Interval(mm): 1080/1100 Describer: Prosser, E.
Hole: 396 Top of Core Depth(m) : 117.20 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 126.25 Sect/Pc #: 6/PCE 17
ROCK = PLAG MOD PHYRIC BASALT;
Texture: PORPHYRITIC-VITROPHYRIC;
Phenocrysts- PLAGIOCLASE ( 7%)
Size(mm): TO 4 Morphology: SKELETAL
CARLSBAD-ALBITE TWINS,COLORLESS,HAS GROUNDMASS
INCLUSIONS;
OLIVINE ( TR%)
Size(mm): 0.7
COLORLESS,ROUNDED*
Groundmass - PLAGIOCLASE ( 20%)
Morphology: NEEDLES
VITROGLOMEROPORPHYRITIC TEXTURE OF QUENCH;
CLINOPYROXENE ( TR%)
OLIVINE ( 3%)
Size(mm): 0.1 Morphology: SKELETAL
VITROGLOMEROPORPHYRITIC TEXTURE OF QUENCH;
MICROCRYST GROUNDMASS ( 55%)
GLASS ( 15%)
FRESH;
MESOSTASIS,DEVITRIFIED,INCLUDES PLAG+PYX+OL(?)*
Alteration - PALAGONITE ( TR%)
ZEOLITE ( TR%)
Vesicles -
Filling: CLAY.MIN,
Filling: MICROXLN
VESICLES PRESENT,NO ABUNDANCE GIVEN*
Leg : 45 Top/Bottom Interval(mm): 1250/1280 Describer: Fujioka, K.
Hole: 396 Top of Core Depth(m) : 117.20 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 126.43 Sect/Pc #: 6/PCE 20
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PORPHYRITIC,GLOMEROPORPHYRITIC,
GROUNDMASS INTERSERTAL,SUBVARIOLITIC(PARTLY)*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.7-7 Morphology: SUBHEDRAL-ANHEDRAL
COLORLESS,ROUNDED,CORRODED,CARLSBAD-ALBITE TWINS,
INCLUDES DEVITRIFIED GLASS;
OLIVINE ( 2%)
Size(mm): 0.4-3 Morphology: ANHEDRAL
2V 90,FO85,ROUNDED OL+PLAG FORM CLUSTERS,
COLORLESS,ROUNDED,SOME INCLUDE PICOTITE*
Groundmass - PLAGIOCLASE ( 40%)
Size(mm): 0.1-0.4
CLINOPYROXENE ( TR%)
Size(mm): 0.1 Morphology: ANHEDRAL
VERY PLAE BROWN;
OLIVINE ( 5%)
Size(mm): 0.02-0.1
MICROCRYST GROUNDMASS ( 40%)
INCLUDES MAGN+CPX+PLAG+CLAY.MIN, TINY MAGN,
ACICULAR CPX,MESOSTASIS*
Alteration - CLAY MINERALS
Location: GROUNDMASS
Leg : 45 Top/Bottom Interval(mm): 100/ 120 Describer: Prosser, E.
Hole: 396 Top of Core Depth(m) : 117.20 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 126.77 Sect/Pc #: CC/PCE 2
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: PORPHYRITIC;
Where sampled: WITH FORAMS BEARING VEIN*
Phenocrysts- PLAGIOCLASE ( 5%)
Size(mm): 4 Morphology: EUHEDRAL-SUBHEDRAL,SKELETAL
OLIVINE ( 1%)
Size(mm): 2.5
TABLOIDS,GLOMEROCRYSTS WITH PLAG;
CLINOPYROXENE ( 0%)
Groundmass - PLAGIOCLASE ( 30%)
CLINOPYROXENE ( <1%)
OLIVINE ( 3%)
MICROCRYST GROUNDMASS ( 40%)
MESOSTASIS,DEVITRIFIED GLASS;
OTHER ( 20%)
VEIN WITH OUTLINES OF FORAM TESTS*
Alteration - IDDINGSITE
Replacing: OL
CLAY MINERALS
Replacing: OL
PALAGONITE ( TR%)
Location: GLASS
Leg : 45 Top/Bottom Interval(mm): 480/ 530 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 126.74 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 131.75 Sect/Pc #: 4/
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PORPHYRITIC,GLOMEROPHYRIC
GROUNDMASS INTERSERTAL*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.2-7.0 Morphology: EUHEDRAL-SUBHEDRAL
SOME LARGE PHENOS CONTAIN INCLUSION FRAGMENTS OF
VOLCANIC GLASS AND RARE PICOTITE,APPROX COMP AN75;
OLIVINE ( 1%)
Size(mm): 0.2-2.0 Morphology: EUHEDRAL-SUBHEDRAL
SOME PHENOS ARE ROUNDED*
Groundmass - PLAGIOCLASE ( 40%)
Morphology: LATHS,SKELETAL XTLS
QUENCH,MICROXLN SKELETAL XTLS INTERGROWN WITH CPX;
OLIVINE ( 5%)
SPINEL ( TR%)
PICOTITE;
COMBINATION ( 40%)
INCLUDES PLAG+CPX+MAGN,5% DUSTY TITANOMAGNETITE,
5% MICROCRYSTALLINE PLAG,90% CPX*
Leg : 45 Top/Bottom Interval(mm): 230/ 0 Describer: Fujioka, K.
Hole: 396 Top of Core Depth(m) : 136.05 Rock Type: SEDIMENTARY
Core: 16 Sample Midpoint(m) : 137.78 Sect/Pc #: 2/PCE 1B
ROCK = CARBONATE;
Where sampled: CARBONATE CRACK FILLING*
Phenocrysts- PLAGIOCLASE ( TR%)
FRAGMENT*
Groundmass - MAGNETITE ( TR%)
Alteration - CALCITE ( 100%)
TWO TYPES OF CARBONATE(CALCITE) PRESENT:
1)FINE GRAINED,2)COARSE GRAINED, BOTH
RECRYSTALLIZED, NO FOSSILS PRESERVED*
Leg : 45 Top/Bottom Interval(mm): 1010/1030 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 136.05 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 140.07 Sect/Pc #: 3/PCE 1N
ROCK = PLAG-OL MOD PHYRIC BASALT
VOLCANIC GALSS;
Texture: PORPHYRITIC
GROUNDMASS VARIOLITIC,SUBVARIOTIC,FINE-GRAINED*
Phenocrysts- PLAGIOCLASE ( 5%)
Size(mm): 0.2X1.4X9 Morphology: EUHEDRAL-SUBHEDRAL
SOME PHENOS ARE ROUNDED AND CONTAIN GLASS
INCLUSIONS,SOME SLIGHTLY ALTERED TO CARBS ALONG
CRACKS;
OLIVINE ( TR%)
Size(mm): 0.2-1.0 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( <1%)
QUENCH;
MICROCRYST GROUNDMASS ( 95%)
DIFFERENT PART OF MATRIX HAS DIFFERENT DEGREE
OF CRYSTALLIZATION*
Alteration - PALAGONITE
Replacing: VOLCANIC GLASS
INTERVARIOLITIC*
CLAY MINERALS
Replacing: VOLCANIC GLASS
CARBONATE
Location: CRACKS,RIMS Replacing: PLAG
CHLORITE
Replacing: VOLCANIC GLASS
INTERVARIOLITIC*
Leg : 45 Top/Bottom Interval(mm): 1370/1420 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 136.05 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 140.44 Sect/Pc #: 3/PCE 1R
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: PORPHYRITIC,GLOMEROPHYRIC
GROUNDMASS INTERSERTAL, FINE GRAINED*
Phenocrysts- PLAGIOCLASE ( 5%)
Size(mm): 0.2-3.0 Morphology: EUHEDRAL-SUBHEDRAL
COMP AN70, SOME PHENOS CONTAIN RELICS OF
VOLCANIC GALSS+MATRIX+SPINEL;
OLIVINE ( <1%)
Size(mm): 0.1-1.5 Morphology: ANHEDRAL-SUBHEDRAL
SOME PHENOS PARTLY ALTERED TO CHLORITE*
Groundmass - PLAGIOCLASE ( 50%)
CLINOPYROXENE ( 40%)
OLIVINE ( 5%)
MAGNETITE ( 1%)
SPINEL ( TR%)
PICOTITE, SOME XTLS MIGHT CONTAIN ROUNDED
INCLUSIONS OF DEVITRIFIED GLASS(?)*
Alteration - CHLORITE
Location: GROUNDMASS, Replacing: OL PHENOS
Location: VESICLES
Vesicles -
Percent: 1-2
Filling: CLAY.MINS,CHLOR
CLAYS ARE YELLOW-BROWN AND YELLOW-GRAY*
Leg : 45 Top/Bottom Interval(mm): 530/ 540 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 136.05 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 141.09 Sect/Pc #: 4/PCE 1G
ROCK = PLAG-OL MOD PHYRIC BASALT
GLASSY;
Texture: PORPHYRITIC,GLASSY
FINE-GRAINED,GROUNDMASS VARIOLITIC*
Phenocrysts- PLAGIOCLASE ( 3-5%)
Size(mm): 0.2-2.5 Morphology: EUHEDRAL-SUBHEDRAL
COMP AN70, 2 TYPES OF PHENOS: 1)ROUNDISH (CONTAINS
SPINEL-PICOTITE INCLUSIONS),2)NOT ROUNDED
(CONTAIN FRAGMENTS OF VOLCANIC GLASS AND MATRIX);
OLIVINE ( <1%)
Size(mm): 0.2-1.5 Morphology: SUBHEDRAL
SOME ROUNDED PHENOS CONTAIN PLAG INCLUSIONS*
Groundmass - SPINEL ( TR%)
PICOTITE;
MICROCRYST GROUNDMASS ( 90%)
DIFFERENT PARTS HAVE DIFFERENT DEGREE OF
CRYSTALLIZATION,PARTLY ALTERED, CONTAINS ELONGATED
ACICULAR QUENCH PLAG,COMPRISED OF INTERSECTING
SPHERULITES OF INDETERMINANT MINERALOGY*
Alteration - CLAY MINERALS
Location: MATRIX
CHLORITE
Location: MATRIX
Leg : 45 Top/Bottom Interval(mm): 700/ 780 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 154.55 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 155.29 Sect/Pc #: 1/PCE 1G
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: PORPHYRITIC,GLOMEROPHYRIC
GROUNDMASS: SUBVARIOLITIC,SUBOPHITIC*
Phenocrysts- PLAGIOCLASE ( 5-7%)
Size(mm): 0.2-4.0 Morphology: EUHEDRAL-SUBHEDRAL
SOME PHENOS CONTAIN RELICS OF ALTERED GLASS;
OLIVINE ( 1%)
Size(mm): 0.2-1.5 Morphology: EUHEDRAL-SUBHEDRAL
SOME PHENOS ROUNDISH AND CONTAIN ROUNDISH SOLID
DEVITRIFIED VOLCANIC GLASS*
Groundmass - SPINEL ( TR%)
PICOTITE;
MICROCRYST GROUNDMASS ( 90%)
INCLUDES TITAN.MT+CPX+PLAG+OL ALTERED TO CLAY.MIN;
PARTLY SUBVARIOLITIC "SWORLS" AND PARTLY
INTERLOCKING XTL LATHS;
PLAGIOCLASE ( 45%)
Morphology: SKELETAL,LATHS
QUENCH;
OLIVINE ( 1%)
Morphology: SKELETAL
CLINOPYROXENE ( 50%)
TITANOMAGNETITE ( 1-3%)
DUST SIZED*
Alteration - CLAY MINERALS
Location: MATRIX
Leg : 45 Top/Bottom Interval(mm): 1300/1360 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 154.55 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 155.88 Sect/Pc #: 1/PCE 1N
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PORPHYRITIC
GROUNDMASS SUBVARIOLITIC*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.2-3.0 Morphology: EUHEDRAL-SUBHEDRAL
COMP AN70,SOME XTLS CONTAIN ALTERED GLASS;
OLIVINE ( <1%)
Size(mm): 0.2-0.8 Morphology: EUHEDRAL-SUBHEDRAL
SOME PHENOS ARE ROUNDISH AND CONTAIN ROUNDISH
SOLIDS OF ALTERED VOLCANIC GALSS*
Groundmass - OLIVINE ( 5%)
Morphology: QUENCH
SPINEL ( TR%)
PICOTITE;
MICROCRYST GROUNDMASS ( 80%)
INCLUDES MAGN+PLAG+CPX, DUST MAGN 5%,PLAG 45%,
CPX 50%, PARTLY ALTERED TO CLAY.MIN+CARB+CHLORITE,
GROUNDMASS IS LARGELY DARK MICROXLN SUBVARIOLITIC
SWORLS,ACICULAR PLAG+CPX MAKE UP THE SWORLS*
Alteration - CALCITE ( 2-3%)
CLAY MINERALS
Location: MATRIX
CARBONATE
Location: MATRIX
CHLORITE
Location: MATRIX
Leg : 45 Top/Bottom Interval(mm): 100/ 190 Describer: Prosser, E.
Hole: 396 Top of Core Depth(m) : 154.55 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 156.19 Sect/Pc #: 2/PCE 1C
ROCK = PLAG MOD PHYRIC BASALT;
Texture: PORPHYRITIC,VARIOLITIC,GLASSY;
Where sampled: GLASSY MARGIN*
Phenocrysts- PLAGIOCLASE ( 4%)
Size(mm): 0.2-5 Morphology: EUHEDRAL-SUBHEDRAL,SKELETAL
PARTIALLY ALTERED TO CARBS;
OLIVINE ( TR%)
Morphology: EUHEDRAL-SUBHEDRAL,SKELETAL
PARTLY ALTERED TO CLAYS,SOME SURROUNDED BY PLAG
PHENOS*
Groundmass - GLASS ( 15%)
COMBINATION ( 55%)
INCLUDES GLASS+MICROXLN+VARIOLITIC,GLASS PALE
BROWN,VARIOLITES DARK BROWN TO BLACK MICROXLN
PORTIONS VERY DARK BUT WITH FINE ACICULAR PLAG
NEEDLES FORMING IN SWORLS*
Alteration - PALAGONITE ( 5%)
CARBONATE ( 5%)
Replacing: PLAG,OL
XTLIZED IN TINY CRACKS AND IN PARTS OF ALTERED OL;
CLAY MINERALS ( 15%)
Replacing: OL
Leg : 45 Top/Bottom Interval(mm): 1180/1200 Describer: Prosser, E.
Hole: 396 Top of Core Depth(m) : 154.55 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 158.74 Sect/Pc #: 3/PCE 1L
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: PORPHYRITIC;
Phenocrysts- PLAGIOCLASE ( 7%)
Morphology: EUHEDRAL-SUBHEDRAL,SKELETAL
FORMS GLOMEROCRYSTS,ROUNDED SHAPE;
OLIVINE ( TR%)
Morphology: SUBHEDRAL-ANHEDRAL,SKELETAL
ALTERED TO IDDINGS+CLAY.MINS*
Groundmass - OPAQUE MINERALS ( 3%)
INCLUDES MAGN+ILMENITE;
MICROCRYST GROUNDMASS ( 90%)
INCLUDES PLAG+CPX+OL, PLAG 60%,CPX 35%,OL 5%*
Alteration - CLAY MINERALS ( TR%)
Replacing: OL
IDDINGSITE
Replacing: OL
HEMATITE ( TR%)
Leg : 45 Top/Bottom Interval(mm): 930/ 950 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 163.56 Rock Type: IGNEOUS
Core: 19 Sample Midpoint(m) : 164.50 Sect/Pc #: 1/PCE 1J
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: PORPHYRITIC
GROUNDMASS: INTERSERTAL*
Phenocrysts- PLAGIOCLASE ( 5-7%)
Size(mm): 0.2-4.0 Morphology: SUBHEDRAL
SOME PHENOS ARE ROUNDED,SOME CONTAIN RELICTS OF
ALTERED GLASS;
OLIVINE ( <<1%)
Size(mm): 0.2-0.6 Morphology: SUBHEDRAL
PARTLY ALTERED TO CHLORITE*
Groundmass - PLAGIOCLASE ( 40%)
OLIVINE ( 2-3%)
SPINEL ( TR%)
PICOTITE;
MICROCRYST GROUNDMASS
Size(mm): 50
INCLUDES MAGN+PLAG+CPX,DUST OF MAGN 10%, PLAG 20%
CPX 70%*
Alteration - CHLORITE
Replacing: OL,MICROXLN
Leg : 45 Top/Bottom Interval(mm): 890/ 900 Describer: Prosser, E.
Hole: 396 Top of Core Depth(m) : 182.06 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 182.95 Sect/Pc #: 1/PCE 5
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: PORPHYRITIC,GLOMEROPORPHYRIC,INTERSERTAL*
Phenocrysts- PLAGIOCLASE ( 5%)
Morphology: EUHEDRAL-SUBHEDRAL, SKELETAL
COMP AN75, LONG NEEDLES IN GROUNDMASS,NO COLOR,
CONTAIN GLASS BLEBS;
OLIVINE ( 2%)
Morphology: EUHEDRAL-SUBHEDRAL,SKELETAL
ROUNDED, PLAG+OL HAVE GLOMEROPHYRIC TEX*
Groundmass - PLAGIOCLASE ( 50%)
Morphology: NEEDLES,SKELETAL
OLIVINE ( 10%)
Morphology: SKELETAL
CLINOPYROXENE ( 25%)
Morphology: SKELETAL,QUENCH
CPX GROWS INT OTHE CARBONATE;
OPAQUE MINERALS ( 3%)
INCLUDES MAGN+ILMENITE*
Alteration - CALCITE ( 1-2%)
CLAY MINERALS ( TR%)
Vesicles -
Percent: 2
Filling: EMPTY
Leg : 45 Top/Bottom Interval(mm): 250/ 270 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 191.33 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 193.09 Sect/Pc #: 2/PCE 1C
ROCK = PLAG-OL PHYRIC BASALT
Texture: PORPHYRITIC,GLOMEROPHYRIC
GROUNDMASS: SUBVARIOLITIC*
Phenocrysts- PLAGIOCLASE (20-25%)
Size(mm): 0.2-5 Morphology: EUHEDRAL-SUBHEDRAL
SOME PHENOS ARE ROUNDISH,SOME CONTAIN RELICTS OF
ALTERED VOLCANIC GLASS+SOME ROUNDISH RELICTS OF
BASALTIC MATRIX;
OLIVINE ( 5%)
Size(mm): 0.1-2.0
SOME PHENOS CONTAIN SOLID ROUNDISH INCLUSIONS OF
BASALTIC MATRIX AND RARE PICOTITE*
Groundmass - SPINEL ( TR%)
PICOTITE;
MICROCRYST GROUNDMASS ( 70%)
INCLUDES MAGN+PLAG+CPX,ALTERED TO CLAY.MIN+CARB+
CHLORITE, DUST MAGN 5%, PLAG 40%, CPX 50%*
Alteration - CALCITE ( TR%)
CARBONATE
Location: MATRIX
CHLORITE
Location: MATRIX
CLAY MINERALS
Location: MATRIX
Vesicles -
Filling: CARB
Filling: CLAYS+CHLORITE
Leg : 45 Top/Bottom Interval(mm): 290/ 310 Describer: Prosser, E.
Hole: 396 Top of Core Depth(m) : 191.33 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 194.63 Sect/Pc #: 3/PCE 1E
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PORPHYRITIC,VITROPHYRIC;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- PLAGIOCLASE ( 13%)
Size(mm): TO 7 Morphology: EUHEDRAL-SUBHEDRAL,SKELETAL
COMP AN70,COLORLESS;
OLIVINE ( 2%)
Size(mm): TO 2 Morphology: EUHEDRAL-SUBHEDRAL
ROUNDED,SKELETAL,PHENOS CONTAIN BLEBS OF CLEAR
GLASS*
Groundmass - GLASS ( 20%)
MICROCRYST GROUNDMASS ( 60%)
INCLUDES GLASS+PLAG+OL, DEVITRIFIED GLASS , QUENCH
PLAG AND OL*
Alteration - PALAGONITE ( 2%)
Location: OL PHENOS
REDDISH BROWN,GLASS INCLUSIONS IN OL ALTERED TO
PALAG*
Leg : 45 Top/Bottom Interval(mm): 1440/1500 Describer: Prosser, E.
Hole: 396 Top of Core Depth(m) : 191.33 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 197.30 Sect/Pc #: 4/PCE 1Q
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 5 Morphology: EUHEDRAL-SUBHEDRAL,SKELETAL
OLIVINE ( 2%)
Size(mm): 2.5 Morphology: SUBHEDRAL-ANHEDRAL
MOSTLY ALTERED TO IDDINGS,PLAG+OL PHENOS HAVE
GLOMEROPORPHYRIC TEXTURE*
Groundmass - PLAGIOCLASE ( 40%)
QUENCH,GROUNDMASS INCLUSIONS;
CLINOPYROXENE ( 35%)
OLIVINE ( 3%)
TITANOMAGNETITE ( 3%)
Alteration - FERROUS HYDROX MINS ( TR%)
Replacing: OL
IDDINGSITE
Replacing: OL
CLAY MINERALS ( TR%)
Vesicles -
Percent: TR
Filling: CLAY.MINS
Leg : 45 Top/Bottom Interval(mm): 590/ 610 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 200.59 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 201.19 Sect/Pc #: 1/PCE 3
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PORPHYRITIC
GROUNDMASS: SUBVARIOLITIC*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 0.2-5.0 Morphology: EUHEDRAL-SUBHEDRAL
COMP AN70, SOME PHENOS CONTAIN RELICTS OF ALTERED
VOLCANIC GALSS;
OLIVINE ( <<1%)
Morphology: SUBHEDRAL
Groundmass - COMBINATION ( 85%)
INCLUDES PLAG+CPX+MAGN, QUENCH PLAG 40%,CPX 50%,
DUST OF MAGN 10%*
Alteration - CLAY MINERALS (S %)
Location: VESICLES
CHLORITE
Location: VESICLES Replacing: MATRIX
SOME PARTS OF MATRIX ALTERED TO CHLORITE;
CALCITE ( TR%)
Replacing: GLASS,CLAY.MIN,
Vesicles -
Filling: CHLORITE,
Filling: CLAY.MINS
Leg : 45 Top/Bottom Interval(mm): 1430/1470 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 200.59 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 202.04 Sect/Pc #: 1/PCE 13
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PORPHYRITIC
GROUNDMASS: SUBVARIOLITIC*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.2-2.5 Morphology: SUBHEDRAL
COMP AN70;
OLIVINE ( 1%)
Size(mm): 0.1-1.0 Morphology: EUHEDRAL-SUBHEDRAL
Groundmass - OLIVINE ( TR%)
QUENCH;
COMBINATION (80-90%)
INCLUDES MAGN+PLAG+CPX,DUST OF MAGN 10%, PLAG 40%,
CPX 50%, ALTERED BY CLAY.MINS+CALCITE*
Alteration - CLAY MINERALS
Location: VESICLES,
Location: MATRIX
CALCITE
Location: MATRIX
CHLORITE
Location: VESICLES
Vesicles -
Filling: CHLOR,CLAY.MIN,
Filling: GLASS
GLASS IS DEVITRIFIED*
Leg : 45 Top/Bottom Interval(mm): 730/ 780 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 210.24 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 214.00 Sect/Pc #: 3/PCE 1I
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PORPHYRITIC
GROUNDMASS: SUBVARIOLITIC-SUBOPHITIC*
Phenocrysts- PLAGIOCLASE ( 20%)
Size(mm): 0.2-4.0 Morphology: EUHEDRAL-SUBHEDRAL
AN70-75, SOME PHENOS OF PLAG+OL ARE ROUNDISH;
OLIVINE ( <1%)
Size(mm): 0.1-0.4 Morphology: EUHEDRAL-SUBHEDRAL
Groundmass - PLAGIOCLASE ( 10%)
QUENCH;
OLIVINE ( <1%)
Morphology: SKELETAL
QUENCH;
COMBINATION ( 70%)
INCLUDES PLAG+CPX+MAGN,DUST OF MAGN 15%,PLAG 25%,
CPX 60%, MATRIX ALTERED TO CLAY.MINS*
Alteration - CLAY MINERALS
Location: MATRIX
Vesicles -
Filling: GLASS
VOLCANIC GLASS IS DEVITRIFIED AND ALTERED*
Leg : 45 Top/Bottom Interval(mm): 960/1000 Describer: Zolotarev, B.
Hole: 396 Top of Core Depth(m) : 219.49 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 220.47 Sect/Pc #: 1/PCE 1G
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PORPHYRITIC
GROUNDMASS: SUBOPHITIC*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 0.9-3.0 Morphology: SUBHEDRAL
COMP AN70-75,SOME PHENOS CONTAIN RELICTS OF
ALTERED VOLCANIC GLASS;
OLIVINE ( 1%)
Size(mm): 0.5-1.0 Morphology: EUHEDRAL-SUBHEDRAL
PARTIALLY ALTERED TO CHLORITE*
Groundmass - PLAGIOCLASE ( 25%)
Morphology: LATHS,SKELETAL
QUENCH;
CLINOPYROXENE ( TR%)
OLIVINE ( TR%)
MICROCRYST GROUNDMASS ( 60%)
INCLUDES MAGN+CPX+PLAG, DUST OF MAGN 10%,
PLAG 30-40%, CPX 40-50%, MATRIX ALTERED TO CLAYS*
Alteration - CHLORITE
Location: VESICLES Replacing: OL
CLAY MINERALS
Location: VESICLES
Vesicles -
Location: CLAY.MIN,
Location: CHLORITE
Leg : 45 Top/Bottom Interval(mm): 1440/1490 Describer: Fujioka, K.
Hole: 396 Top of Core Depth(m) : 219.49 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 220.96 Sect/Pc #: 1/PCE 1L
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: PORPHYRITIC
GROUNDMASS: SUBVARIOLITIC,GLOMEROPORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( 7%)
Size(mm): 1-2 Morphology: SUBHEDRAL-EUHEDRAL
SOME FORM GLOMEROCRYSTS FROM SUBVARIOLITES;
OLIVINE ( 3%)
Size(mm): 0.3-1 Morphology: SUBHEDRAL-EUHEDRAL,SKELETAL
Groundmass - PLAGIOCLASE ( 10%)
Size(mm): 0.1-0.4 Morphology: SKELETAL
QUENCH;
OLIVINE ( 1%)
Size(mm): 0.1-0.2 Morphology: SKELETAL
NOT ELONGATED,QUENCH;
MICROCRYST GROUNDMASS ( 80%)
INCLUDES MAGN+CPX+PLAG, DUST OF MAGN, MOSTLY
REPLACED BY CLAY.MINS,FORM OF MESOSTASIS IS
SUBVARIOLITIC "SWORLS"*
Alteration - CLAY MINERALS
Location: MATRIX
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