Leg : 58 Top/Bottom Interval(mm): 0/ 0 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 240.00 Rock Type: IGNEOUS
Core: 19 Sample Midpoint(m) : 240.72 Sect/Pc #: CC/
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 35%)
Size(mm): 0.05-0.8 Morphology: LATHS
APPROX COMP AN63;
CLINOPYROXENE ( 25%)
Size(mm): 0.05-1.2
AUGITE COMP, PINKISH BROWN COLOR;
MAGNETITE ( 5%)
Size(mm): 0.02-0.05 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 33%)
CRYPTOCRYSTALLINE MATRIX WITH SECONDARY CHLORITE*
Alteration - CHLORITE
Location: GROUNDMASS
Vesicles -
Size(mm): 0.2-0.8
Percent: 2
Filling: NONE
Shape: ROUNDED
Leg : 58 Top/Bottom Interval(mm): 270/ 290 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 243.50 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 243.78 Sect/Pc #: 1/PCE 1
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 1%)
Size(mm): 0.02-0.05
RELICT GRAINS;
PLAGIOCLASE ( 35%)
Size(mm): 0.1-1 Morphology: LATHS
APPROX COMP AN82, LARGER LATHS ZONED;
CLINOPYROXENE ( 20%)
Size(mm): 0.05-1
AUGITE COMP;
MAGNETITE ( 3%)
Size(mm): 0.02-0.3 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 45%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX;
SPINEL
PICOTITE, ACCESSORY*
Alteration - ZEOLITE ( 0.5%)
Location: PLAG
AS INCLUSIONS IN PLAG, POSSIBLY CHABAZITE*
Vesicles -
Percent: 0.5
Shape: SUBROUNDED
Leg : 58 Top/Bottom Interval(mm): 620/ 640 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 243.50 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 244.13 Sect/Pc #: 1/PCE 4
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 40%)
Size(mm): 0.02-0.5 Morphology: LATHS
CLINOPYROXENE ( 10%)
Size(mm): 0.1-0.5
STRONG PINKISH BROWN COLOR;
MICROCRYST GROUNDMASS ( 40%)
CHLORITIC GROUNDMASS*
Alteration - CHLORITE
Location: GROUNDMASS
PLATES OF CHLORITE UP TO 1MM*
Leg : 58 Top/Bottom Interval(mm): 710/ 730 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 243.50 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 244.22 Sect/Pc #: 1/PCE 5
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 40%)
Size(mm): 0.1-1.5 Morphology: LATHS
APPROX COMP AN57, RIM AND SECTOR ZINED;
CLINOPYROXENE ( 25%)
Size(mm): 0.1-1.5
AUGITE COMP;
APATITE
Morphology: ACICULAR
Leg : 58 Top/Bottom Interval(mm): 880/ 900 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 243.50 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 245.89 Sect/Pc #: 2/PCE 1C
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 5%)
Size(mm): 0.05-0.2
RELICT GRAINS OFTEN IN PSUEDOMORPHS;
PLAGIOCLASE ( 33%)
Size(mm): 0.05-1 Morphology: LATHS
APPROX COMP AN60, RIM AND SECTOR ZINED;
CLINOPYROXENE ( 20%)
Size(mm): 0.05-1
AUGITE;
MAGNETITE ( 2%)
Size(mm): 0.02-0.5 Morphology: GRANULAR,ACICULAR
MICROCRYST GROUNDMASS ( 40%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CHLORITE
Location: GROUNDMASS
Leg : 58 Top/Bottom Interval(mm): 300/ 320 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 243.50 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 246.81 Sect/Pc #: 3/PCE 2
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, APHYRIC*
Groundmass - OLIVINE ( 5%)
Size(mm): 0.05-0.2
RELICT GRAINS,INCLUSIONS OF CR SPINEL;
PLAGIOCLASE ( 40%)
Size(mm): 0.05-1 Morphology: LATHS
APPROX COMP AN60;
CLINOPYROXENE ( 20%)
Size(mm): 0.05-1
AUGITE, ODD INCLUSIONS OF OLIVINE;
MAGNETITE ( 2%)
Size(mm): 0.02-0.1 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 33%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX;
SPINEL
ACCESSORY PICOTITE*
Alteration - CHLORITE
Location: GROUNDMASS
Leg : 58 Top/Bottom Interval(mm): 460/ 480 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 243.50 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 248.47 Sect/Pc #: 4/PCE 1
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 15%)
Size(mm): 0.05-0.3
RELICT GRAINS OR ENCLOSED IN PLAG AND PYX;
PLAGIOCLASE ( 25%)
Size(mm): 0.05-0.7 Morphology: LATHS
SAUSSERITIZED CORES;
CLINOPYROXENE ( 20%)
Size(mm): 0.05-0.5
AUGITE;
MAGNETITE ( 3%)
Size(mm): 0.01-0.5 Morphology: GRANULAR,ACICULAR
LARGER ACICULAR GROUPS PRESENT;
MICROCRYST GROUNDMASS ( 37%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX;
SPINEL
ACCESSORY PICOTITE;
APATITE
ACCESSORY*
Alteration - CHLORITE
Location: GROUNDMASS
ZEOLITE
ACCESSORY*
Leg : 58 Top/Bottom Interval(mm): 870/ 890 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 272.00 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 274.38 Sect/Pc #: 2/PCE 14
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERSERTAL, MODERATELY PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 5%)
Size(mm): 1-2 Morphology: LATHS
RIM AND SECTOR ZONED*
Groundmass - PLAGIOCLASE ( 25%)
Size(mm): 0.05-0.6 Morphology: LATHS
APPROX COMP AN55;
CLINOPYROXENE ( 25%)
Size(mm): 0.05-0.5
AUGITE;
MAGNETITE ( 5%)
Size(mm): 0.02-0.5 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 15%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CARBONATE ( TR%)
Location: VESICLES
CLAY MINERALS ( TR%)
Location: VESICLES
FINE, CRYPTOCRYSTALLINE;
ZEOLITE ( TR%)
Location: VESICLES
PYRITE ( TR%)
Location: VESICLES
Vesicles -
Size(mm): 0.5-2
Percent: 25
Filling: CARB,CLAY.MIN,
Shape: SUBROUNDED
Filling: ZEOL,PYRITE
Leg : 58 Top/Bottom Interval(mm): 1380/1440 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 272.00 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 274.91 Sect/Pc #: 2/PCE 22A
ROCK = PLAG PHYRIC BASALT;
Texture: INTERSERTAL,PORPHYRITIC;
Where sampled: FLOW INTERIOR;
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 1-2.5
SOME ZONING*
Groundmass - PLAGIOCLASE ( 20%)
Size(mm): 0.02-0.6 Morphology: LATHS
CLINOPYROXENE ( 30%)
Size(mm): 0.05-0.5
AUGITE;
MAGNETITE ( 2%)
Size(mm): 0.05-0.1 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 28%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CLAY MINERALS
Location: VESICLES
CRYPTOCRYSTALLINE;
CHLORITE
Location: GROUNDMASS Replacing: CLAY.MIN ROUNDED
Vesicles -
Size(mm): 0.1-0.2
Percent: 5
Filling: CLAY.MINS
Shape: SUBROUNDED
Leg : 58 Top/Bottom Interval(mm): 730/ 750 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 278.50 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 279.24 Sect/Pc #: 1/PCE 8A
ROCK = PLAG SPARSELY PHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, SPARSELY PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 2%)
Size(mm): 1-2 Morphology: LATHS
ALIGNED INCLUSIONS*
Groundmass - PLAGIOCLASE ( 33%)
Size(mm): 0.05-1 Morphology: LATHS
CLINOPYROXENE ( 30%)
Size(mm): 0.05-0.5
AUGITE;
MAGNETITE ( 2%)
Size(mm): 0.02-0.05 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 30%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CHLORITE
Location: GROUNDMASS
CLAY MINERALS
Location: VESICLES
CRYPTOCRYSTALLINE*
Vesicles -
Size(mm): 0.8-1.2
Percent: 1
Filling: CLAY.MIN
Leg : 58 Top/Bottom Interval(mm): 300/ 320 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 278.50 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 280.31 Sect/Pc #: 2/PCE 1A
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR,PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 1-2
APPROX COMP AN70*
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): 0.1-1
APPROX COMP AN62, LARGER LATHS ZONED;
CLINOPYROXENE ( 25%)
Size(mm): 0.1-1
AUGITE;
MAGNETITE ( 1%)
Size(mm): 0.03-0.1 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 34%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CHLORITE
Location: GROUNDMASS
Leg : 58 Top/Bottom Interval(mm): 210/ 230 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 278.50 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 281.72 Sect/Pc #: 3/PCE 3
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL,PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 1-2 Morphology: LATHS
APPROX COMP AN69,ALIGNED INCLUSIONS*
Groundmass - PLAGIOCLASE ( 25%)
Size(mm): 0.1-1 Morphology: LATHS
APPROX COMP AN58;
CLINOPYROXENE ( 25%)
Size(mm): 0.1-1.5
AUGITE;
MAGNETITE ( 2%)
Size(mm): 0.02-0.1 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 18%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CLAY MINERALS
Location: VESICLES
CRYPTOCRYSTALLINE;
CARBONATE ( TR%)
Location: VESICLES
CALCITE;
CHLORITE
Location: VESICLES
Vesicles -
Size(mm): 0.2-1.3
Percent: 20
Filling: CLAY.MIN
Shape: ANGULAR
Leg : 58 Top/Bottom Interval(mm): 490/ 510 Describer: Nisterenko, G.
Hole: 444A Top of Core Depth(m) : 281.50 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 282.00 Sect/Pc #: 1/PCE 1F
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERGRANULAR-OPHITIC, MODERATELY PORPHYRITIC;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- PLAGIOCLASE ( 5%)
Size(mm): 2-5 Morphology: EUHEDRAL
APPROX COMP AN65-67*
Groundmass - OLIVINE ( <1%)
Size(mm): 0.1
PLAGIOCLASE ( 45%)
Size(mm): 0.1-2 Morphology: EUHEDRAL
APPROX COMP AN59-61;
CLINOPYROXENE ( 40%)
Size(mm): 0.3-3 Morphology: SUBHEDRAL-ANHEDRAL
AUGITE;
MAGNETITE ( 2%)
Size(mm): 0.05-0.2
GLASS ( 7%)
Alteration - COMBINATION ( 7%)
Location: INTERSTITIAL Replacing: GROUNDMASS,OLIVINE
INCLUDES SERP+TALC+CHLORITE*
Leg : 58 Top/Bottom Interval(mm): 1090/1110 Describer: Nisterenko, G.
Hole: 444A Top of Core Depth(m) : 281.50 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 284.10 Sect/Pc #: 2/PCE 1H
ROCK = PLAG MOD PHYRIC BASALT;
Texture: OPHITIC, MODERATELY PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 5%)
Size(mm): 1-3 Morphology: EUHEDRAL
Groundmass - OLIVINE ( 5-7%)
RELICT;
PLAGIOCLASE ( 45%)
Size(mm): 0.2-2 Morphology: EUHEDRAL-SUBHEDRAL
APPROX COMP AN60;
CLINOPYROXENE ( 30%)
Size(mm): 0.2-6 Morphology: SUBHEDRAL-ANHEDRAL
AUGITE;
MAGNETITE ( 3-5%)
Size(mm): 0.1-0.5
GLASS ( 10%)
5-7% SUBSTITUTED OLIVINE*
Alteration - COMBINATION ( 10%)
Location: INTERSTITIAL Replacing: GROUNDMASS,OLIVINE
INCLUDES SERP+TALC+CHLORITE*
Leg : 58 Top/Bottom Interval(mm): 920/ 940 Describer: Nisterenko, G.
Hole: 444A Top of Core Depth(m) : 281.50 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 285.43 Sect/Pc #: 3/PCE 1E
ROCK = PLAG PHYRIC BASALT;
Texture: INTERGRANULAR-SUBOPHITIC, PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE (15-20%)
Size(mm): 3 Morphology: EUHEDRAL
SLIGHT ZONATION*
Groundmass - OLIVINE ( 5%)
Size(mm): 0.2-0.4
PLAGIOCLASE ( 30%)
Size(mm): 0.2-3 Morphology: EUHEDRAL
CLINOPYROXENE ( 30%)
Size(mm): 0.1-2 Morphology: ANHEDRAL
AUGITE;
MAGNETITE ( 5%)
Size(mm): 0.1-1.0
GLASS ( 10%)
INCLUDING SERP, SUBSTITUTED OL BY TALC+CHLORITE*
Alteration - COMBINATION ( 10%)
Location: INTERSTITIAL Replacing: GROUNDMASS,OLIVINE
INCLUDES SERP+TALC+CHLORITE*
Leg : 58 Top/Bottom Interval(mm): 750/ 770 Describer: Nisterenko, G.
Hole: 444A Top of Core Depth(m) : 291.00 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 291.76 Sect/Pc #: 1/PCE 3C
ROCK = PLAG PHYRIC BASALT;
Texture: INTERGRANULAR-SUBOPHITIC, PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE (10-15%)
Size(mm): 1.5-6 Morphology: EUHEDRAL
APPROX COMP AN65*
Groundmass - OLIVINE ( 3-5%)
Size(mm): 0.1-0.6
PLAGIOCLASE ( 40%)
Size(mm): 0.4-2.5 Morphology: EUHEDRAL
CLINOPYROXENE ( 35%)
Size(mm): 0.3-1.5 Morphology: ANHEDRAL
AUGITE;
MAGNETITE ( 1-2%)
Size(mm): 0.1-0.5
Alteration - COMBINATION ( 5%)
Replacing: OLIVINE
INCLUDES CALCITE+SERP+TALC*
Leg : 58 Top/Bottom Interval(mm): 1110/1130 Describer: Nisterenko, G.
Hole: 444A Top of Core Depth(m) : 291.00 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 293.62 Sect/Pc #: 2/PCE 1C
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERGRANULAR, MODERATELY PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 2-5 Morphology: EUHEDRAL
APPROX COMP AN65*
Groundmass - OLIVINE ( 3-5%)
Size(mm): 0.1-0.5
PLAGIOCLASE ( 40%)
Size(mm): 0.2-2 Morphology: EUHEDRAL
CLINOPYROXENE ( 30%)
Size(mm): 0.1-2.5 Morphology: ANHEDRAL
AUGITE;
MAGNETITE ( 3-5%)
Size(mm): 0.1-0.5
GLASS ( 7-10%)
Alteration - COMBINATION ( 7-10%)
Location: INTERSTITIAL Replacing: OLIVINE,GROUNDMASS
INCLUDES SERP+TALC+CHLORITE*
Leg : 58 Top/Bottom Interval(mm): 680/ 700 Describer: Nisterenko, G.
Hole: 444A Top of Core Depth(m) : 291.00 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 294.69 Sect/Pc #: 3/PCE 2
ROCK = PLAG PHYRIC BASALT;
Texture: INTERGRANULAR, PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 2-6 Morphology: EUHEDRAL
APPROX COMP AN67*
Groundmass - OLIVINE ( 7-10%)
Size(mm): 0.2-1.0
SUBSTITUTED BY CALC+SERP+TALC;
PLAGIOCLASE ( 45%)
Size(mm): 0.1-1.5 Morphology: EUHEDRAL
CLINOPYROXENE ( 30%)
Size(mm): 0.1-1.0 Morphology: ANHEDRAL
AUGITE;
MAGNETITE ( 1-2%)
Size(mm): 0.2-1.0
Alteration - COMBINATION ( 7-10%)
Replacing: OLIVINE
INCLUDES CALCITE+TALC+SERP*
Leg : 58 Top/Bottom Interval(mm): 630/ 650 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 291.00 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 296.14 Sect/Pc #: 4/PCE 6
ROCK = PLAG PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL, PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 30%)
Size(mm): 1-10
SECTOR AND RIM ZONED*
Groundmass - OLIVINE ( 2%)
Size(mm): 0.05-0.2
RELICT GRAINS;
PLAGIOCLASE ( 25%)
Size(mm): 0.1-1
CLINOPYROXENE ( 25%)
Size(mm): 0.05-0.5
AUGITE, ODD TWINNED GRAIN;
MAGNETITE ( 2%)
Size(mm): 0.02-0.2 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 16%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CHLORITE
Location: GROUNDMASS
Leg : 58 Top/Bottom Interval(mm): 630/ 650 Describer: Nisterenko, G.
Hole: 444A Top of Core Depth(m) : 291.00 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 296.14 Sect/Pc #: 4/PCE 6
ROCK = PLAG PHYRIC BASALT;
Texture: INTERGRANULAR, PHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 30%)
Size(mm): 2-10 Morphology: EUHEDRAL
APPROX COMP AN65*
Groundmass - OLIVINE ( 5%)
Size(mm): 0.1-0.8
INTENSELY SUBSTITUTED BY SERPENTINE+TALC;
PLAGIOCLASE ( 35%)
Size(mm): 0.1-1 Morphology: EUHEDRAL
CLINOPYROXENE ( 35%)
Size(mm): 0.1-0.8 Morphology: ANHEDRAL
MAGNETITE ( 1-2%)
Size(mm): 0.1-0.5
Alteration - COMBINATION
Replacing: OLIVINE
INCLUDES TALC+SERP*
Leg : 58 Top/Bottom Interval(mm): 900/ 920 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 300.50 Rock Type: IGNEOUS
Core: 27 Sample Midpoint(m) : 301.41 Sect/Pc #: 1/PCE 3B
ROCK = PLAG PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL, PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 1-4
APPROX COMP AN70, RIM AND SECTOR ZONED,
ALIGNED INCLUSIONS*
Groundmass - OLIVINE ( 1%)
Size(mm): 0.05-0.1
RELICT GRAINS;
PLAGIOCLASE ( 40%)
Size(mm): 0.05-1
APPROX COMP AN66;
CLINOPYROXENE ( 25%)
Size(mm): 0.05-0.6
AUGITE;
MAGNETITE ( 1%)
Size(mm): 0.02-1.5 Morphology: GRANULAR,ACICULAR AGGREGATES
MICROCRYST GROUNDMASS ( 23%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CHLORITE
Location: GROUNDMASS
Leg : 58 Top/Bottom Interval(mm): 930/ 950 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 300.50 Rock Type: IGNEOUS
Core: 27 Sample Midpoint(m) : 302.94 Sect/Pc #: 2/PCE 1D
ROCK = PLAG PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL, PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 1-4
APPROX COMP AN70, RIM+SECTOR ZONING,
ALIGNED INCLUSIONS*
Groundmass - OLIVINE ( 2%)
Size(mm): 0.05-0.1
RELICT GRAINS;
PLAGIOCLASE ( 40%)
Size(mm): 0.05-1
APPROX COMP AN64;
CLINOPYROXENE ( 25%)
Size(mm): 0.05-0.6
AUGITE;
MAGNETITE ( 1%)
Size(mm): 0.02-1 Morphology: GRANULAR,ACICULAR
ACICULAR AGGREGATES;
MICROCRYST GROUNDMASS ( 22%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CHLORITE
Location: GROUNDMASS
Leg : 58 Top/Bottom Interval(mm): 931/ 951 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 300.50 Rock Type: IGNEOUS
Core: 27 Sample Midpoint(m) : 302.94 Sect/Pc #: 2/PCE 1D
ROCK = PLAG PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL, PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 1-2 Morphology: LATHS
RIM+SECTOR ZONED*
Groundmass - OLIVINE ( 1%)
Size(mm): 0.05-0.1
RELICT GRAINS;
PLAGIOCLASE ( 30%)
Size(mm): 0.05-1 Morphology: LATHS
CLINOPYROXENE ( 30%)
Size(mm): 0.05-0.5
AUGITE;
MAGNETITE ( 1%)
Size(mm): 0.02-1 Morphology: GRANULAR,ACICULAR AGGREGATES
MICROCRYST GROUNDMASS ( 23%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CHLORITE
Location: GROUNDMASS
Leg : 58 Top/Bottom Interval(mm): 430/ 450 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 300.50 Rock Type: IGNEOUS
Core: 27 Sample Midpoint(m) : 303.94 Sect/Pc #: 3/PCE 1D
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL,PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 1-2 Morphology: LATHS
APPROX COMP AN70, RIM+SECTOR ZONING*
Groundmass - OLIVINE ( 1%)
Size(mm): 0.05-0.1
RELICT GRAINS;
PLAGIOCLASE ( 35%)
Size(mm): 0.05-1
APPROX COMP AN63;
CLINOPYROXENE ( 30%)
Size(mm): 0.05-0.5 Morphology: GRANULAR,ACICULAR AGGREGATES
AUGITE;
MAGNETITE ( 1%)
Size(mm): 0.02-1
MICROCRYST GROUNDMASS ( 23%)
CRYPTOCRYSTALLINE MATRIX*
Alteration - CHLORITE
Location: GROUNDMASS
Leg : 58 Top/Bottom Interval(mm): 830/ 850 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 300.50 Rock Type: IGNEOUS
Core: 27 Sample Midpoint(m) : 305.84 Sect/Pc #: 4/PCE 3C
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL,PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 1-2 Morphology: LATHS
RIM+SECTOR ZONED*
Groundmass - OLIVINE ( 1%)
Size(mm): 0.05-0.15
PLAGIOCLASE ( 35%)
Size(mm): 0.05-1 Morphology: LATHS
APPROX COMP AN65;
CLINOPYROXENE ( 30%)
Size(mm): 0.05-0.5
AUGITE;
MAGNETITE ( 1%)
Size(mm): 0.02-0.3 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 23%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CHLORITE
Location: GROUNDMASS
Leg : 58 Top/Bottom Interval(mm): 390/ 410 Describer: Marsh, N.
Hole: 444A Top of Core Depth(m) : 300.50 Rock Type: IGNEOUS
Core: 27 Sample Midpoint(m) : 306.90 Sect/Pc #: 5/PCE 5B
ROCK = PLAG MODERATELY PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL,PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 1-2 Morphology: LATHS
RIM+SECTOR ZONED*
Groundmass - OLIVINE ( 0.5%)
Size(mm): 0.05-0.1
PLAGIOCLASE ( 35%)
Size(mm): 0.05-0.1 Morphology: LATHS
APPROX COMP AN64;
CLINOPYROXENE ( 33%)
Size(mm): 0.05-0.6
MAGNETITE ( 1.5%)
Size(mm): 0.02-0.3 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 20%)
CRYPTOCRYSTALLINE CHLORITIC MATRIX*
Alteration - CHLORITE
Location: GROUNDMASS
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