Leg : 82 Top/Bottom Interval(mm): 750/ 0 Describer: Christie, D.M.
Hole: 558 Top of Core Depth(m) : 405.00 Rock Type: IGNEOUS
Core: 27 Sample Midpoint(m) : 408.75 Sect/Pc #: 3/PCE 8
ROCK = APHYRIC BASALT;
Texture: APHYRIC,INTERSERTAL;
Where sampled: PILLOW INTERIOR
POSSIBLY FLOW INTERIOR*
Groundmass - OLIVINE ( 20%)
Size(mm): .2-.4 Morphology: ANHEDRAL-PRISMATIC
PLAGIOCLASE ( 35%)
Size(mm): .2-3 Morphology: IRREGULAR LATHS
IN SUBPARALLEL GROUPS;
CLINOPYROXENE ( 15%)
Size(mm): <.2 Morphology: LATH SHAPED
INTERSTITIAL TO PLAG;
MAGNETITE ( 2-3%)
Size(mm): <.1 Morphology: GRANULAR
IN MESOSTASIS;
SPINEL ( TR%)
Morphology: OCTAHEDRAL
IN LARGER OLIVINES AND PLAG;
MESOSTASIS ( 25%)
Morphology: INTERSTITIAL
DEVITRIFIED GLASS*
Alteration - CLAY MINERALS ( 5-10%)
Location: INTERSTITIAL Replacing: OL,GLASS
Location: AND ADJACENT
Location: TO OL
GREEN-BROWN*
Vesicles -
Size(mm): <.5
Percent: 1
Location: RANDOM
Filling: GREEN CLAY
Shape: ROUND
Leg : 82 Top/Bottom Interval(mm): 920/ 0 Describer: Neuser, R.
Hole: 558 Top of Core Depth(m) : 414.50 Rock Type: IGNEOUS
Core: 28 Sample Midpoint(m) : 415.42 Sect/Pc #: 1/PCE 9
ROCK = OL SPARSELY PHYRIC BASALT;
Texture: SPARSELY PHYRIC,HYALOPHITIC,PILOTAXITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE ( TR%)
Size(mm): .4 Morphology: EUHEDRAL
ALTERED TO CLAY*
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): <.3 Morphology: LATHS
PARALLEL TEXTURED;
CLINOPYROXENE ( 20%)
Size(mm): <.05
MESOSTASIS ( 50%)
INCLUDES MAGN,ILMENITE,GLASS*
Alteration - CLAY MINERALS (10-15%)
Location: RANDOM Replacing: MESOSTASIS,OL
ID UNCERTAIN FOR REPLACEMENT MINERALS,WEATHERING*
Leg : 82 Top/Bottom Interval(mm): 1230/ 0 Describer: Brannon, J.
Hole: 558 Top of Core Depth(m) : 414.50 Rock Type: IGNEOUS
Core: 28 Sample Midpoint(m) : 417.23 Sect/Pc #: 2/PCE 15
ROCK = APHYRIC BASALT;
Texture: APHYRIC,INTERSERTAL;
Where sampled: PILLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 35%)
Size(mm): .1-.4 Morphology: SKELETAL-ACICULAR
CLINOPYROXENE ( 20%)
Size(mm): .01-.05 Morphology: GRANULAR
MAGNETITE ( 3%)
Size(mm): .01-.04 Morphology: GRANULAR
DEVITRIFIED GLASS ( 5%)
Size(mm): .1-.01 Morphology: INTERSTITIAL
MESOSTASIS ( 36%)
Size(mm): .1-1 Morphology: INTERSTITIAL
Vesicles -
Size(mm): .2-.8
Percent: 1
Location: SCATTERED
Filling: EMPTY,SOME
Shape: ROUND
Filling: GLASS
SOME EMPTY,SOME GEOPETAL*
Leg : 82 Top/Bottom Interval(mm): 620/ 0 Describer: Neuser, R.
Hole: 558 Top of Core Depth(m) : 414.50 Rock Type: IGNEOUS
Core: 28 Sample Midpoint(m) : 418.12 Sect/Pc #: 3/PCE 7
ROCK = OL SPARSELY PHYRIC BASALT;
Texture: SPARSELY PHYRIC,HYALOPILITIC,TACHYLITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <1%)
Size(mm): <1.2 Morphology: IDIOMORPHOUS
MOSTLY ALTERED TO CLAY*
Groundmass - PLAGIOCLASE ( 15%)
Size(mm): <.3 Morphology: LATHS
CLINOPYROXENE ( 20%)
Size(mm): <.05 Morphology: GRANULAR
MESOSTASIS ( 10%)
TACHYLITIC,INCLUDES DEVITRIFIED GLASS + ORE
MINERALS(OPAQUES-MAGN + ILMENITE)*
Alteration - CLAY MINERALS ( <3%)
Location: VESICLES + Replacing: OL + MESOSTASIS
Location: SCATTERED
OTHER (10-15%)
Location: RANDOM Replacing: MESOSTASIS + PLAG
INCLUDES ORANGE OXIDES,WEATHERING*
Vesicles -
Size(mm): .05
Percent: <1
Filling: CLAY
Shape: ROUND
Leg : 82 Top/Bottom Interval(mm): 700/ 0 Describer: Christie, D.M.
Hole: 558 Top of Core Depth(m) : 423.50 Rock Type: IGNEOUS
Core: 29 Sample Midpoint(m) : 428.70 Sect/Pc #: 4/PCE 6
ROCK = APHYRIC BASALT;
Texture: HYALOPHITIC,APHYRIC;
Where sampled: NEXT TO GLASSY MARGIN*
Groundmass - OLIVINE ( 20%)
Size(mm): .1
MICROPHENOS,COMPLETELY ALTERED;
PLAGIOCLASE ( 25%)
Size(mm): .1-.5
CLINOPYROXENE ( 10%)
Size(mm): <.02 Morphology: GRANULAR,INTERSTITIAL
MAGNETITE ( 10%)
Size(mm): .01-.05 Morphology: GRANULAR-SKELETAL
MESOSTASIS ( 35%)
INCLUDES DEVITRIFIED GLASS WITH SHEAVES OF CPX*
Alteration - CLAY MINERALS ( 20%)
Location: OL Replacing: OL
GREEN;
OTHER ( 5-10%)
Location: RANDOM
INCLUDES ORANGE FE-OXIDES,WEATHERING*
Leg : 82 Top/Bottom Interval(mm): 550/ 0 Describer: Christie, D.M.
Hole: 558 Top of Core Depth(m) : 432.50 Rock Type: IGNEOUS
Core: 30 Sample Midpoint(m) : 433.05 Sect/Pc #: 1/PCE 7
ROCK = OL MODERATELY PHYRIC BASALT;
Texture: MODERATELY PHYRIC,VARIOLITIC,HYALOPILITIC;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( 5%)
Size(mm): .1-.3 Morphology: DIAMOND-PRISM
MICROPHENOS*
Groundmass - OLIVINE ( 20%)
Size(mm): <.1(-.5) Morphology: SKELETAL-ELONGATE
QUENCH TEXTURED;
PLAGIOCLASE ( 1-2%)
Size(mm): <.5 Morphology: ACICULAR
EXTREME ELONGATION;
CLINOPYROXENE ( 5%)
Morphology: GRANULAR-PRISMATIC
IN VARIOLITIC PATCHES*
Alteration - OTHER ( 30%)
Location: PERVASIVE Replacing: THROUGHOUT
INCLUDES ORANGE OXIDES,WEATHERING*
Leg : 82 Top/Bottom Interval(mm): 630/ 0 Describer: Christie, D.M.
Hole: 558 Top of Core Depth(m) : 432.50 Rock Type: IGNEOUS
Core: 30 Sample Midpoint(m) : 433.13 Sect/Pc #: 1/PCE 8A
ROCK = OL MODERATELY PHYRIC BASALT;
Texture: MODERATELY PHYRIC,HYALOPILITIC;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( 5%)
Size(mm): .05-.3 Morphology: DIAMOND,PRISM
MICROPHENOS*
Groundmass - OLIVINE ( 20%)
Size(mm): <.05 Morphology: HIGHLY ELONGATE + BRANCHING
Morphology: QUENCH FORMS
DEVITRIFIED GLASS ( 75%)
Vesicles -
Size(mm): 1
Percent: <1
Filling: GREEN CLAY
Shape: ROUND
RARE*
Leg : 82 Top/Bottom Interval(mm): 680/ 0 Describer: Christie, D.M.
Hole: 558 Top of Core Depth(m) : 450.50 Rock Type: IGNEOUS
Core: 32 Sample Midpoint(m) : 457.18 Sect/Pc #: 5/PCE 2B
ROCK = OL PHYRIC BASALT;
Texture: PHYRIC,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE (10-15%)
Size(mm): .1-.5 Morphology: DIAMOND-PRISM
MICROPHENOS,ALTERED POSSIBLY TO TALC*
Groundmass - OLIVINE ( TR%)
Size(mm): <.5 Morphology: BRANCHING AGGREGATE
PLAGIOCLASE ( 25%)
Size(mm): .05-.5 Morphology: IRREGULAR LATHS
CLINOPYROXENE ( 40%)
Size(mm): <.05 Morphology: PARALLEL + BRANCHING
Morphology: AGGREGATES
MAGNETITE ( 5%)
Morphology: CUBES
DEVITRIFIED GLASS ( 15%)
Morphology: INTERSTITIAL
Alteration - TALC ( 2-3%)
Replacing: OL
ID UNCERTAIN FOR TALC*
Leg : 82 Top/Bottom Interval(mm): 860/ 0 Describer: Neuser, R.
Hole: 558 Top of Core Depth(m) : 450.50 Rock Type: IGNEOUS
Core: 32 Sample Midpoint(m) : 457.36 Sect/Pc #: 5/PCE 2B
ROCK = APHYRIC BASALT;
Texture: APHYRIC,HYALOPILITIC,IMMATURE SHEAF;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 25%)
Size(mm): <1 Morphology: LATHS
SOME SKELETAL-RADIATING FROM ONE CENTER;
CLINOPYROXENE ( 20%)
Size(mm): <.1
MESOSTASIS ( 50%)
INCLUDES MAGN+ILMENITE+GLASS*
Alteration - CLAY MINERALS ( 3%)
Replacing: MESOSTASIS
Leg : 82 Top/Bottom Interval(mm): 990/ 0 Describer: Christie, D.M.
Hole: 558 Top of Core Depth(m) : 477.50 Rock Type: IGNEOUS
Core: 35 Sample Midpoint(m) : 479.99 Sect/Pc #: 2/PCE 6A
ROCK = OL SPARSELY PHYRIC BASALT;
Texture: SPARSELY PHYRIC,INTERSERTAL;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( 2%)
Size(mm): <.2 Morphology: ANHEDRAL-DIAMOND
MICROPHENOS*
Groundmass - PLAGIOCLASE ( 35%)
Size(mm): <.2 Morphology: ACICULAR
LARGELY PARALLEL BUNDLES;
CLINOPYROXENE ( 45%)
Size(mm): <.05 Morphology: GRANULAR
MAGNETITE ( 3%)
Size(mm): .02 Morphology: GRANULAR
DEVITRIFIED GLASS ( 15%)
Alteration - CARBONATE ( <1%)
Location: VESICLES
CLAY MINERALS ( 1%)
Replacing: OL
GREEN;
OTHER ( 5%)
Location: RANDOM
INCLUDES ORANGE OXIDES,WEATHERING*
Vesicles -
Size(mm): <.03
Percent: <1
Location: RANDOM
Filling: CLAY,CALCITE
Shape: ROUND
Leg : 82 Top/Bottom Interval(mm): 1450/ 0 Describer: Christie, D.M.
Hole: 558 Top of Core Depth(m) : 495.50 Rock Type: IGNEOUS
Core: 37 Sample Midpoint(m) : 496.95 Sect/Pc #: 1/PCE 19B
ROCK = APHYRIC BASALT;
Texture: APHYRIC,INTERSERTAL-INTERGRANULAR;
Where sampled: PILLOW INTERIOR*
Groundmass - OLIVINE ( 5-10%)
Size(mm): .2-.5 Morphology: ANHEDRAL
MANY FRESH;
PLAGIOCLASE ( 40%)
Size(mm): .2-.5 Morphology: HOLLOW LATHS,IRREGULAR
CLINOPYROXENE ( 15%)
Morphology: GRANULAR
MAGNETITE ( 5%)
Morphology: CUBES,GRANULAR
DEVITRIFIED GLASS (20-30%)
Morphology: INTERSTITIAL
SPINEL ( TR%)
Size(mm): <.01 Morphology: OCTAHEDRA
MAINLY IN PLAG*
Alteration - CLAY MINERALS ( 1-2%)
Location: VESICLES, Replacing: OL
Location: LARGER OL
BROWN*
OTHER
Location: RANDOM
POSSIBLY INCLUDES ORANGE FE-OXIDES,WEATHERING*
Vesicles -
Size(mm): <.5
Percent: <1
Location: RANDOM
Filling: CLAY
Shape: ROUND
Leg : 82 Top/Bottom Interval(mm): 860/ 0 Describer: Christie, D.M.
Hole: 558 Top of Core Depth(m) : 504.50 Rock Type: IGNEOUS
Core: 38 Sample Midpoint(m) : 506.86 Sect/Pc #: 2/PCE 5B
ROCK = APHYRIC BASALT;
Texture: APHYRIC,INTERGRANULAR;
Where sampled: PILLOW INTERIOR*
Groundmass - OLIVINE ( 5-10%)
Size(mm): .1-.3 Morphology: PRISM-DIAMOND
COMPLETELY ALTERED MICROPHENOS;
PLAGIOCLASE ( 40%)
Size(mm): .01-.5 Morphology: ACICULAR
IN PARALLEL OR SHEAF BUNDLES;
CLINOPYROXENE ( 40%)
Size(mm): .02 Morphology: GRANULAR
MAGNETITE ( 1-2%)
Size(mm): .01-.02 Morphology: GRANULAR
Alteration - CARBONATE ( TR%)
Replacing: OL
CLAY MINERALS ( <5%)
Location: OL Replacing: OL
OTHER ( 5%)
Location: RANDOM Replacing: MAINLY OL
INCLUDES ORANGE FE-OXIDES*
Vesicles -
Size(mm): <.5
Percent: 2-3
Location: RANDOM
Filling: GREEN CLAY
Shape: ROUND
Leg : 82 Top/Bottom Interval(mm): 360/ 0 Describer: Christie, D.M.
Hole: 558 Top of Core Depth(m) : 509.00 Rock Type: IGNEOUS
Core: 39 Sample Midpoint(m) : 510.86 Sect/Pc #: 2/
ROCK = APHYRIC BASALT;
Texture: APHYRIC,INTERGRANULAR-INTERSERTAL;
Where sampled: PILLOW INTERIOR*
Groundmass - OLIVINE ( 5-10%)
Size(mm): .1-.5 Morphology: DIAMOND-PRISM
APPROX 50% ALTERED;
PLAGIOCLASE ( 40%)
Size(mm): .1-.5 Morphology: HOLLOW LATHS
CLINOPYROXENE ( 25%)
Size(mm): .01-.2 Morphology: GRANULAR
MAGNETITE ( 5-10%)
Size(mm): .02-.05 Morphology: GRANULAR-SKELETAL
DEVITRIFIED GLASS ( 15%)
Morphology: INTERSTITIAL
Alteration - CLAY MINERALS ( 5%)
Location: OL Replacing: OL
OTHER ( <5%)
Location: ADJACENT TO
Location: OL
INCLUDES ORANGE FE-OXIDES,WEATHERING*
Vesicles -
Size(mm): .5
Percent: <1
Location: RANDOM
Filling: GREEN-BROWN
Shape: ROUND
Size(mm): .5
Percent: <1
Location: RANDOM
Filling: GREEN-BROWN
Shape: ROUND
Filling: CLAY
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