Leg : 54 Top/Bottom Interval(mm): 60/ 150 Describer: Mattey, D.
Hole: 424C Top of Core Depth(m) : 27.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 27.61 Sect/Pc #: 1/PCE 2
ROCK = PLAG SPARSELY PHYRIC BASALT;
Texture: VARIOLITIC*
Phenocrysts- PLAGIOCLASE ( TR%)
Size(mm): TO 1 Morphology: EUHEDRAL
OSCILLATORY ZONED*
Groundmass - PLAGIOCLASE ( 10%)
Size(mm): <0.5 Morphology: EUHEDRAL,SKELETAL
SPIKY TERMINATIONS;
CLINOPYROXENE ( 3%)
Size(mm): <0.2 Morphology: GRANULAR
TINY GLOMEROCRYSTS;
GLASS ( 85%)
DEVITRIFIED,FEATHERY,SOME YELLOW FRESH GLASS
ON EDGE OF SLIDE*
Alteration - CLAY MINERALS
GREEN PATCHES,POSSIBLY ALTERED GLASS*
Vesicles -
Size(mm): 0.01
Percent: 2
Filling: FE.OX,CLAY.MINS
Shape: ROUND,OVAL
Leg : 54 Top/Bottom Interval(mm): 300/ 320 Describer: Humphris, S.
Hole: 424C Top of Core Depth(m) : 27.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 27.81 Sect/Pc #: 1/PCE 4
ROCK = PLAG SPARSELY MICROPHYRIC BASALT;
Texture: VARIOLITIC*
Phenocrysts- PLAGIOCLASE ( 2%)
Size(mm): TO 0.1 Morphology: SUBEQUANT
SOME WITH ZONING*
Groundmass - PLAGIOCLASE ( 10%)
Size(mm): <0.01 Morphology: SKELETAL LATHS
WITH FEATHERY TERMINATIONS;
CLINOPYROXENE ( 5%)
Size(mm): <0.01 Morphology: ANHEDRAL,LATHS
SOME FEATHERY TERMINATIONS;
COMBINATION ( 82%)
INCLUDES MAGN+ILMENITE+GLASS,PARTIALLY
DEVITRIFIED*
Alteration - CLAY MINERALS ( 1%)
Replacing: MICROPHENOS
GREENISH-BROWN*
Vesicles -
Size(mm): 0.01
Percent: 1
Filling: CLAY.MIN,FE.OX
Leg : 54 Top/Bottom Interval(mm): 440/ 520 Describer: Humphris, S.
Hole: 424C Top of Core Depth(m) : 27.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 27.98 Sect/Pc #: 1/PCE 6
ROCK = PLAG-OL MOD MICROPHYRIC BASALT;
Texture: VARIOLITIC-SPHERULITIC,GLASSY*
Phenocrysts- OLIVINE ( <2%)
Size(mm): 0.01
PLAGIOCLASE ( 3%)
Size(mm): TO 0.05 Morphology: SUBEQUANT
Groundmass - PLAGIOCLASE ( 5%)
Size(mm): 0.01 Morphology: SKELETAL LATHS
WITH FEATHERY TERMINATIONS;
CLINOPYROXENE ( 2%)
Size(mm): <0.01 Morphology: ANHEDRAL
GLASS ( 86%)
DEVITRIFICATION,SPHERULITIC TOWARD MARGINS*
Vesicles -
Percent: <1
Filling: EMPTY
Leg : 54 Top/Bottom Interval(mm): 530/ 620 Describer: Mattey, D.
Hole: 424C Top of Core Depth(m) : 27.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 28.07 Sect/Pc #: 1/PCE 7
ROCK = PLAG CPX SPARSELY PHYRIC BASALT;
Texture: VARIOLITIC*
Phenocrysts- PLAGIOCLASE ( 1-2%)
Size(mm): TO 0.5 Morphology: SUBHEDRAL
ZONED;
CLINOPYROXENE ( TR%)
Size(mm): TO 0.5 Morphology: EUHEDRAL
Groundmass - PLAGIOCLASE ( 10%)
Size(mm): TO 0.75 Morphology: LATHS,VARIOLITES
CLINOPYROXENE ( 10%)
Size(mm): TO 1 Morphology: LATHS,VARIOLITES,GRAINS
GLASS ( 75%)
FEATHERY DEVITRIFICATION*
Alteration - CHLORITE ( 2%)
Location: GLOMEROCRYSTS Replacing: CPX,GLASS
UNSURE WHAT IS BEING REPLACED,ONLY IN WEATHERING
PART*
Vesicles -
Size(mm): TO 0.5
Percent: 2-3
Filling: EMPTY
Shape: ROUND
UNSURE IF VESICLES ARE TOTALLY EMPTY*
Leg : 54 Top/Bottom Interval(mm): 00/ 130 Describer: Mattey, D.
Hole: 424C Top of Core Depth(m) : 31.50 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 31.56 Sect/Pc #: 1/PCE 1
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,FLOW-BANDED*
Phenocrysts- PLAGIOCLASE ( RARE%)
Size(mm): 0.2
MICROPHENOCRYSTS*
Groundmass - PLAGIOCLASE ( 10%)
Size(mm): <0.3 Morphology: LATHS
CLINOPYROXENE ( <5%)
Size(mm): <0.1 Morphology: SOLO GRAINS,GLOMEROCRYSTS
GLASS ( 83%)
Morphology: INTERSERTITIAL,SPHERULITIC
SOME FRESH,MAINLY DEVITRIFIED*
Alteration - CLAY MINERALS ( RARE%)
Replacing: GLASS
FERROUS OXIDE ( RARE%)
Replacing: GLASS
Vesicles -
Size(mm): TO 1
Percent: 2
Filling: EMPTY,CHLORITE,
Shape: ROUND
Leg : 54 Top/Bottom Interval(mm): 200/ 230 Describer: Humphris, S.
Hole: 424C Top of Core Depth(m) : 31.50 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 31.72 Sect/Pc #: 1/PCE 2
ROCK = PLAG SPARSELY MICROPHYRIC BASALT;
Texture: INTERSERTAL,VARIOLITIC*
Phenocrysts- PLAGIOCLASE ( <2%)
Morphology: EQUANT
SOME ZONING*
Groundmass - OLIVINE
IDENTITY UNCERTAIN FOR OL;
PLAGIOCLASE ( 25%)
Size(mm): 0.01 Morphology: SKELETAL LATHS
CLINOPYROXENE ( 10%)
Size(mm): <0.01 Morphology: ANHEDRAL-SUBHEDRAL
GLASS ( 60%)
SOME ALTERATION*
Alteration - CLAY MINERALS ( 2%)
Replacing: PHENOCRYSTS,GROUNDMASS
BROWN,UNSURE IF PHENOCRYSTS ARE BEING ALTERED*
Vesicles -
Percent: <1
Filling: EMPTY,CLAY.MIN
Shape: SPHERICAL
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