Leg : 59 Top/Bottom Interval(mm): 520/ 550 Describer: Mattey, D.
Hole: 449 Top of Core Depth(m) : 114.00 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 114.54 Sect/Pc #: 1/PCE 5
ROCK = PLAG MODERATELY PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC,HYALOPILITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE ( TR%)
IDENTITY UNCERTAIN;
PLAGIOCLASE ( 7-10%)
Size(mm): 0.5-2 Morphology: EUHEDRAL
APPROX COMP AN70-75,OSCILLATORY ZONING PRESENT;
CLINOPYROXENE ( 0%)
Groundmass - OLIVINE ( TR%)
IDENTITY UNCERTAIN;
PLAGIOCLASE ( 30%)
Size(mm): 0.2-0.4 Morphology: ACICULAR
FLOW ALIGNED MICROLITES;
CLINOPYROXENE ( 10%)
Size(mm): 0.05-0.1 Morphology: GRANULAR,ANHEDRAL
MAGNETITE ( 0%)
ILMENITE ( 0%)
GLASS ( 60%)
DEVITRIFIED AND PARTIALLY REPLACED BY CLAY MINS*
Alteration - CLAY MINERALS (10-20%)
Replacing: GLASS
Vesicles -
Size(mm): 0.2-0.4
Percent: 1-2
Filling: EMPTY
Leg : 59 Top/Bottom Interval(mm): 0/ 40 Describer: Mattey, D.
Hole: 449 Top of Core Depth(m) : 114.00 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 115.52 Sect/Pc #: 2/PCE 1A
ROCK = BASALTIC GLASS;
Texture: MODERATELY PORPHYRITIC,PARTIALLY DEVITRIFIED,
SPHERULITIC-HYALOPILITIC;
Where sampled: GLASSY MARGIN*
Phenocrysts- OLIVINE ( 2-3%)
Size(mm): 0.4-0.8 Morphology: EUHEDRAL
FRESH,CONTAINS NUMEROUS SPINELS;
PLAGIOCLASE ( 5%)
Size(mm): 0.4-1.2 Morphology: EUHEDRAL
APPROX COMP AN45?,OSCILLATORY ZONING;
CLINOPYROXENE ( 0%)
SPINEL ( <1%)
Size(mm): 0.01-0.02
CHROME RICH,OCTOHEDRAL MICROPHENOS IN OL*
Groundmass - PLAGIOCLASE ( 0-30%)
Morphology: ACICULAR MICROLITES
GLASS (70-90%)
DEVITRIFIED (FRESH GLASS RIMS)*
Alteration - CALCITE
Location: VESICLES
Vesicles -
Size(mm): 0.2-0.4
Percent: 1
Filling: CALCITE
Shape: IRREGULAR
Leg : 59 Top/Bottom Interval(mm): 40/ 70 Describer: Mattey, D.
Hole: 449 Top of Core Depth(m) : 133.00 Rock Type: IGNEOUS
Core: 17 Sample Midpoint(m) : 134.56 Sect/Pc #: 2/PCE 1A
ROCK = PLAG MODERATELY PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC,INTERSERTAL-HYALOPILITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 0%)
PLAGIOCLASE ( <5%)
Size(mm): 0.5-4 Morphology: ANHEDRAL
STRONGLY ZONED;
CLINOPYROXENE ( 0%)
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE (40-50%)
Size(mm): 0.5-2 Morphology: LATH LIKE-ACICULAR
CLINOPYROXENE (30-40%)
Size(mm): 0.2-1 Morphology: SUBOPHITIC PLATES
OPAQUE MINERALS ( 5%)
Morphology: SKELETAL
INCLUDES MAGN + ILMENITE,IN GLASSY MESOSTASIS;
GLASS ( 0-20%)
LOCALLY CONCENTRATED FORMING MESOSTASIS,PARTLY
FRESH*
Alteration - CLAY MINERALS ( <10%)
Location: VESICLES Replacing: GLASS
Vesicles -
Size(mm): 0.5-4
Percent: <5
Filling: CLAY.MIN
VESICLES ARE EITHER EMPTY OR LINED WITH CLAY MINS*
Leg : 59 Top/Bottom Interval(mm): 200/ 230 Describer: Mattey, D.
Hole: 449 Top of Core Depth(m) : 142.50 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 142.72 Sect/Pc #: 1/PCE 3
ROCK = PLAG MODERATELY PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC,PILOTAXITIC-INTERSERTAL;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( <3%)
Size(mm): 0.3-0.5 Morphology: LATH LIKE-EQUANT
Groundmass - OLIVINE ( TR%)
Size(mm): 0.1-0.4 Morphology: EUHEDRAL
IDENTITY UNCERTAIN,POSSIBLE MICROPHENOS;
PLAGIOCLASE ( 35%)
Size(mm): 0.2-4 Morphology: THIN LATHS
APPROX COMP AN40-50,SOME LATHS ARE VERY LONG;
CLINOPYROXENE ( 30%)
Size(mm): 0.2-1 Morphology: SHEAF LIKE,RARE LATHS
OPAQUE MINERALS ( 2%)
Size(mm): 0.2-0.5 Morphology: SKELETAL,ACICULAR
INCLUDES MAGN + ILMENITE;
GLASS ( 5-10%)
Alteration - CLAY MINERALS ( <10%)
Replacing: GLASS
Vesicles -
Size(mm): 0.2-1
Percent: 20
Filling: EMPTY
Shape: SHAPELESS
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