Leg : 58 Top/Bottom Interval(mm): 990/1010 Describer: Dick, H.
Hole: 443 Top of Core Depth(m) : 501.00 Rock Type: IGNEOUS
Core: 55 Sample Midpoint(m) : 502.00 Sect/Pc #: 1/PCE 10A
ROCK = OL SPARSELY PHYRIC BASALT;
Texture: INTERSERTAL, SPARSELY PORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 1%)
Size(mm): 0.5 Morphology: IDIOBLASTIC
REPLACED 100% BY CALCITE,NO OTHER PHENOS SEEN*
Groundmass - PLAGIOCLASE ( 40%)
Size(mm): 0.5-1.0 Morphology: LATHS
APPROX COMP AN65 BY ALBITE TWIN METHOD;
CLINOPYROXENE ( 25%)
Size(mm): 0.1-1.0 Morphology: QUENCH FEATHERS,GRANULES
MAGNETITE ( 3%)
Size(mm): 0.01-0.1 Morphology: EUHEDRAL,ANHEDRAL
OLIVINE ( 0%)
ILMENITE ( 0%)
GLASS ( 0%)
Alteration - CARBONATE ( 5%)
Location: GROUNDMASS Replacing: GROUNDMASS,OL PHENOS
CLAY MINERALS ( 20%)
Location: INTERGRANULAR Replacing: GROUNDMASS
Vesicles -
Size(mm): 0.1-1
Percent: 10
Filling: CALCITE
20% CALCITE*
Leg : 58 Top/Bottom Interval(mm): 00/ 20 Describer: Dick, H.
Hole: 443 Top of Core Depth(m) : 501.00 Rock Type: IGNEOUS
Core: 55 Sample Midpoint(m) : 502.51 Sect/Pc #: 2/PCE 1
ROCK = OL MOD MICROPHYRIC BASALT;
Texture: INTERSERTAL, MODERATELY MICROPORPHYRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 3%)
Size(mm): 0.2-1.0 Morphology: EUHEDRAL
MICROPHENOS,NO OTHER PHENOS SEEN*
Groundmass - OLIVINE ( 3%)
Morphology: SHEAF-LIKE
PARTIALLY REPLACED BY IDDINGS*
PLAGIOCLASE ( 25%)
Size(mm): 0.1-0.7 Morphology: LATHS
APPROX COMP >AN65 BY ALBITE METHOD;
CLINOPYROXENE ( 25%)
MAGNETITE ( 2%)
Size(mm): 0.01-0.1 Morphology: EUHEDRAL,ANHEDRAL
Alteration - CARBONATES
Replacing: OL,VESICLES
CLAY MINERALS ( 15%)
Location: GROUNDMASS, Replacing: GROUNDMASS
Location: VESICLES
Vesicles -
Size(mm): 0.1-0.5
Percent: 20
Filling: CLAY.MIN,
Filling: CALCITE
Leg : 58 Top/Bottom Interval(mm): 1170/1190 Describer: Dick, H.
Hole: 443 Top of Core Depth(m) : 504.50 Rock Type: IGNEOUS
Core: 56 Sample Midpoint(m) : 505.68 Sect/Pc #: 1/PCE 8F
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL, APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 0%)
PLAGIOCLASE ( 0%)
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): 0.1-1.0
CLINOPYROXENE ( 25%)
Size(mm): 0.01-1.5 Morphology: GRANULAR,QUENCH
MAGNETITE ( 3%)
Size(mm): 0.01-0.1
OTHER ( 3%)
GRUNDGE*
Alteration - CARBONATE ( 4%)
Location: VESICLES,
Location: GROUNDMASS
MOSTLY VESICLES,SOME IN GROUNDMASS*
Vesicles -
Size(mm): 0.1-1.5
Percent: 7
Filling: CALCITE
Leg : 58 Top/Bottom Interval(mm): 600/ 630 Describer: Dick, H.
Hole: 443 Top of Core Depth(m) : 504.50 Rock Type: IGNEOUS
Core: 56 Sample Midpoint(m) : 506.62 Sect/Pc #: 2/PCE 5B
ROCK = OL MOD MICROPHYRIC BASALT;
Texture: INTERSERTAL, MODERATELY MICROPORPHYRITIC*
Phenocrysts- OLIVINE ( 4%)
Size(mm): 0.1-0.5 Morphology: EUHEDRAL
MICROPHENOS,REPLACED 100% BY CALCITE;
PLAGIOCLASE ( 0%)
Groundmass - PLAGIOCLASE ( 55%)
Morphology: MICROLITES
CLINOPYROXENE ( 0%)
OTHER
REMAINDER IS GRUNDGE*
Alteration - CARBONATE ( 4%)
Replacing: OL MICROPHENOS
Vesicles -
Size(mm): 0.5-1.0
Percent: 25
Leg : 58 Top/Bottom Interval(mm): 680/ 710 Describer: Dick, H.
Hole: 443 Top of Core Depth(m) : 504.50 Rock Type: IGNEOUS
Core: 56 Sample Midpoint(m) : 506.70 Sect/Pc #: 2/PCE 5D
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE ( 40%)
Size(mm): 0.1-5.0 Morphology: ACICULAR NEEDLES,LATHS
APPROX COMP >AN73 BY ALBITE METHOD,HOUR GLASS
ZONING;
CLINOPYROXENE ( 30%)
Size(mm): 0.01-0.5 Morphology: GRANULES,MICROLITES
MAGNETITE ( 2-3%)
Alteration - CARBONATES ( 3%)
Location: VUGS, Replacing: GROUNDMASS
Location: GROUNDMASS
Vesicles -
Size(mm): 0.2-2.0
Percent: 25
Shape: IRREGULAR,
Shape: ROUND
Leg : 58 Top/Bottom Interval(mm): 1110/1130 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 539.00 Rock Type: IGNEOUS
Core: 60 Sample Midpoint(m) : 540.12 Sect/Pc #: 1/PCE 4E
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - SPINEL
Size(mm): 0.02 Morphology: SQUARE
CR SPINEL, 1 GRAIN SEEN IN OL*
OLIVINE ( 15%)
Size(mm): 0.02-0.4 Morphology: ANHEDRAL
PLAGIOCLASE ( 33%)
Size(mm): 0.05-2 Morphology: LATHS
LARGER LATHS ZONED;
CLINOPYROXENE ( 20%)
Size(mm): 0.02-0.8 Morphology: ANHEDRAL
AUGITE COMP;
MAGNETITE ( 5%)
Size(mm): 0.01-0.2 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 25%)
CRYPTOCRYSTALLINE MATRIX*
Vesicles -
Size(mm): 0.02-0.1
Percent: 2
Size(mm): 0.7-2
Leg : 58 Top/Bottom Interval(mm): 1100/1120 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 539.00 Rock Type: IGNEOUS
Core: 60 Sample Midpoint(m) : 541.61 Sect/Pc #: 2/PCE 1J
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 20%)
Size(mm): 0.2-0.6 Morphology: ANHEDRAL
PLAGIOCLASE ( 45%)
Size(mm): 0.1-2 Morphology: LATHS
MAGNETITE ( 5%)
Size(mm): 0.02-0.1 Morphology: GRANULAR
COMBINATION ( 30%)
INCLUDES MICROXLN+PYX,CRYPTOCYRSTALLINE MATRIX,
PYX IS ACICULAR*
Alteration - OTHER
Location: GROUNDMASS Replacing: OL
OL?,TALC?,FIBROUS?*
Leg : 58 Top/Bottom Interval(mm): 1250/1270 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 539.00 Rock Type: IGNEOUS
Core: 60 Sample Midpoint(m) : 544.76 Sect/Pc #: 4/PCE 3H
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 15%)
Size(mm): 0.01-0.9 Morphology: ANHEDRAL
INTERGROWN WITH PLAG;
PLAGIOCLASE ( 35%)
Size(mm): 0.1-2 Morphology: LATHS
SOME ALIGNMENT;
CLINOPYROXENE ( 30%)
Size(mm): 0.1-1 Morphology: ANHEDRAL
AUGITE COMP;
MAGNETITE ( 5%)
Size(mm): 0.01-0.8 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 15%)
CRYPTOCRYSTALLINE MATRIX*
Leg : 58 Top/Bottom Interval(mm): 890/ 910 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 548.50 Rock Type: IGNEOUS
Core: 61 Sample Midpoint(m) : 549.40 Sect/Pc #: 1/PCE 1B
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - SPINEL ( TR%)
Size(mm): 0.02-0.03 Morphology: SQUARE
CR SPINEL, FEW GRAINS ON OLIVINE;
OLIVINE ( 10%)
Size(mm): 0.2-0.6 Morphology: ANHEDRAL
PLAGIOCLASE ( 30%)
Size(mm): 0.02-2 Morphology: LATHS
CLINOPYROXENE ( 30%)
Size(mm): 0.05-2 Morphology: ANHEDRAL
AUGITE COMP,SOME NUCLEATED ON ACICULAR PYX;
MAGNETITE ( 5%)
Size(mm): 0.02-0.3 Morphology: GRANULAR
COMBINATION ( 25%)
INCLUDES MICROXLN+PYX,IS CRYPTOCRYSTALLINE MATRIX,
PYX IS ACICULAR AND QUENCHED*
Leg : 58 Top/Bottom Interval(mm): 1030/1050 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 548.50 Rock Type: IGNEOUS
Core: 61 Sample Midpoint(m) : 551.04 Sect/Pc #: 2/PCE 2B
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 10%)
Size(mm): 0.05-0.4 Morphology: ANHEDRAL
PLAGIOCLASE ( 35%)
Size(mm): 0.1-1.5 Morphology: LATHS
SOME LATHS FRACTURED;
CLINOPYROXENE ( 30%)
Size(mm): 0.02-0.8 Morphology: ANHEDRAL
AUGITE COMP;
MAGNETITE ( 5%)
Size(mm): 0.02-0.2 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 20%)
GROUNDMASS*
Alteration - CARBONATE
Location: VEIN FILLING Replacing: VEINS
CALCITE;
CLAY MINERALS
Location: VEIN FILLING, Replacing: VEINS,OL
SERPENTINE,CHLORITE;
IDDINGSITE
Location: GROUNDMASS Replacing: OLIVINE
CHLORITE
Location: GROUNDMASS Replacing: OLIVINE
SERPENTINITE
Location: GROUNDMASS Replacing: OLIVINE
Leg : 58 Top/Bottom Interval(mm): 1060/1080 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 548.50 Rock Type: IGNEOUS
Core: 61 Sample Midpoint(m) : 554.07 Sect/Pc #: 4/PCE 3G
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERSERTAL, MODERATELY PORPHYRITIC;
QUENCH*
Phenocrysts- PLAGIOCLASE ( 5%)
Size(mm): 0.8-3 Morphology: LATH-LIKE,ACICULAR
Groundmass - PLAGIOCLASE ( 45%)
Size(mm): 0.25-0.6 Morphology: ACICULAR
CLINOPYROXENE ( 45%)
Morphology: ACICULAR
AUGITE COMP,FEATHERY QUENCH GROWTHS COMMON;
MAGNETITE ( 7.5%)
Size(mm): <0.01 Morphology: GRANULAR
Vesicles -
Percent: 2-5
Filling: CALCITE
USUALLY EMPTY*
Leg : 58 Top/Bottom Interval(mm): 900/ 920 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 558.00 Rock Type: IGNEOUS
Core: 62 Sample Midpoint(m) : 558.91 Sect/Pc #: 1/PCE 4C
ROCK = PLAG SPARSELY PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL, SPARSELY PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( 1%)
Size(mm): 0.5-0.7 Morphology: LATHS
OFTEN CLUSTERS;
CLINOPYROXENE
Size(mm): 0.1X0.4
ONE SUBOPHITIC GRAIN OF AUGITE*
Groundmass - PLAGIOCLASE ( 49%)
Size(mm): 0.05-0.3 Morphology: LATHS
CLINOPYROXENE ( 20%)
Size(mm): 0.05-0.4 Morphology: ANHEDRAL
AUGITE COMP;
MAGNETITE ( 2.5%)
Size(mm): 0.01-0.1 Morphology: GRANULAR
SOMETIMES SKELETAL;
MICROCRYST GROUNDMASS ( 27.5%)
CRYPTOCRYSTALLINE MATRIX*
Leg : 58 Top/Bottom Interval(mm): 290/ 310 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 558.00 Rock Type: IGNEOUS
Core: 62 Sample Midpoint(m) : 559.80 Sect/Pc #: 2/PCE 1B
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR,PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.4-0.8 Morphology: LATHS
BROAD LATHS*
Groundmass - PLAGIOCLASE ( 20%)
Size(mm): 0.05-0.7 Morphology: ACICULAR
CLINOPYROXENE ( 25%)
Size(mm): 0.05-0.5 Morphology: ANHEDRAL
AUGITE COMP, SOME SUBOPHITIC TEXTURE;
MAGNETITE ( 3%)
Size(mm): 0.01-0.2 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 40%)
CRYPTOCRYSTALLINE MATRIX*
Alteration - ( 2%)
Replacing: CLAY.MIN SUBROUNDED
FINELY CRYSTALLINE CLAY*
Leg : 58 Top/Bottom Interval(mm): 590/ 610 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 567.50 Rock Type: IGNEOUS
Core: 63 Sample Midpoint(m) : 569.60 Sect/Pc #: 2/PCE 4B
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL, APHYRIC*
Groundmass - PLAGIOCLASE ( 45%)
Morphology: LATHS
APPROX COMP AN62, OCCURS OFTEN AS MICROLITES;
CLINOPYROXENE ( 25%)
Morphology: ACICULAR
POORLY CRYSTALLIZED;
MAGNETITE ( 5%)
Size(mm): 0.01-0.1 Morphology: GRANULAR
MICROCRYST GROUNDMASS
GLASSY CRYPTOCRYSTALLINE MATRIX*
Alteration - CALCITE
Location: VESICLES
CLAY MINERALS
Location: GROUNDMASS Replacing: GLASSY MATERIAL
YELLOW,PALAGONITE?*
Vesicles -
Size(mm): 0.1-0.8
Percent: 5
Filling: CALCITE
Shape: SUBROUNDED
Leg : 58 Top/Bottom Interval(mm): 580/ 600 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 567.50 Rock Type: IGNEOUS
Core: 63 Sample Midpoint(m) : 571.09 Sect/Pc #: 3/PCE 1D
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 38%)
Morphology: LATHS
CLINOPYROXENE ( 30%)
Size(mm): 0.1-0.8 Morphology: ANHEDRAL
MAGNETITE ( 2%)
Size(mm): 0.01-0.2 Morphology: GRANULAR
Alteration - CALCITE
Location: VESICLES
CLAY MINERALS
Location: GROUNDMASS
YELLOW;
IDDINGSITE
ID UNCERTAIN*
Vesicles -
Size(mm): 0.1-1.5
Percent: 5
Filling: CALCITE
Shape: SUBROUNDED
Leg : 58 Top/Bottom Interval(mm): 840/ 860 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 567.50 Rock Type: IGNEOUS
Core: 63 Sample Midpoint(m) : 578.85 Sect/Pc #: 8/PCE 2B
ROCK = APHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL, APHYRIC*
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): 0.2-1.5 Morphology: LATHS
OFTEN ZONED;
CLINOPYROXENE ( 30%)
Size(mm): 0.2-1 Morphology: SUBHEDRAL,SUBOPHITIC
MAGNETITE ( 5%)
Size(mm): 0.02-0.7 Morphology: GRANULAR
LARGE GRAINS,SKELETAL INTERIOR;
MICROCRYST GROUNDMASS ( 35%)
CRYPTOCRYSTALLINE MATRIX*
Leg : 58 Top/Bottom Interval(mm): 120/ 140 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 577.50 Rock Type: IGNEOUS
Core: 64 Sample Midpoint(m) : 579.13 Sect/Pc #: 2/PCE 1A
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, APHYRIC*
Phenocrysts- OLIVINE ( 3%)
Morphology: ANHEDRAL
RELICT GRAINS IN GROUNDMASS ALTERATION;
PLAGIOCLASE ( 40%)
Morphology: LATHS
CLINOPYROXENE ( 25%)
Morphology: ANHEDRAL
SOME SUBOPHITIC;
MAGNETITE ( 2%)
Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 25%)
CRYPTOCRYSTALLINE MATERIAL*
Alteration - CLAY MINERALS
Location: GROUNDMASS Replacing: OLIVINE
CHLORITE;
SERPENTINITE
Location: GROUNDMASS Replacing: OLIVINE
Leg : 58 Top/Bottom Interval(mm): 370/ 400 Describer: Marsh, N.
Hole: 443 Top of Core Depth(m) : 577.50 Rock Type: IGNEOUS
Core: 64 Sample Midpoint(m) : 580.89 Sect/Pc #: 3/PCE 1B
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL-INTERGRANULAR, APHYRIC*
Groundmass - OLIVINE ( 10%)
Morphology: ANHEDRAL
RELICT GRAINS,FIBROUS PSUEDOMORPHS;
PLAGIOCLASE ( 30%)
Size(mm): 0.1-1 Morphology: LATHS
CLINOPYROXENE ( 25%)
Size(mm): 0.1-1 Morphology: ANHEDRAL
AUGITE COMP;
MAGNETITE ( 5%)
Size(mm): 0.02-0.2 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 30%)
CRYPTOCRYSTALLINE MATERIAL*
Alteration - OTHER
Location: GROUNDMASS Replacing: OLIVINE
TALC?,IDDINGSITE*
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