Leg : 59 Top/Bottom Interval(mm): 410/ 440 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 290.00 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 294.93 Sect/Pc #: 4/PCE 2C
ROCK = PLAG MODERATELY PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC,HYALO-OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 2%)
Size(mm): 0.4-2.2 Morphology: EUHEDRAL-SUBHEDRAL
APPROX COMP AN64;
CLINOPYROXENE ( TR%)
Size(mm): 0.5 Morphology: SUBHEDRAL
2VZ 60-70;
ORTHOPYROXENE ( 0%)
Groundmass - PLAGIOCLASE ( 40%)
Size(mm): 0.05-0.3 Morphology: LATH
APPROX COMP AN54*
CLINOPYROXENE ( 20%)
Size(mm): 0.1-0.3
OPAQUE MINERALS ( 5%)
Size(mm): 0.01-0.05
INCLUDES MAGN + ILMENITE;
GLASS ( 10%)
Alteration - OTHER ( 3%)
Vesicles -
Percent: 20
Leg : 59 Top/Bottom Interval(mm): 880/ 910 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 527.50 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 528.40 Sect/Pc #: 1/PCE 1N
ROCK = PLAG-CPX PHYRIC BASALT;
Texture: PORPHYRITIC,HYALO-OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 0.7-3.0 Morphology: EUHEDRAL-SUBHEDRAL
CLINOPYROXENE ( 1%)
Size(mm): 0.5-1.0 Morphology: EUHEDRAL-SUBHEDRAL
ORTHOPYROXENE ( TR%)
Size(mm): 0.7
PARTLY ALTERED*
Groundmass - PLAGIOCLASE ( 25%)
Size(mm): 0.03-0.2 Morphology: LATH
PLAGIOCLASE ( 25%)
Size(mm): 0.03-0.2 Morphology: LATH
APPROX COMP AN50*
CLINOPYROXENE ( 15%)
Size(mm): 0.02-0.2
OPAQUE MINERALS ( 5%)
Size(mm): 0.01-0.05
INCLUDES MAGN + ILMENITE*
GLASS ( 20%)
ORTHOPYROXENE ( TR%)
Size(mm): 0.3 Morphology: SUBHEDRAL
PSEUDOMORPH*
Alteration - CARBONATE ( 4%)
Vesicles -
Size(mm): 0.2-2
Percent: 15
Leg : 59 Top/Bottom Interval(mm): 1000/1030 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 527.50 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 531.52 Sect/Pc #: 3/PCE 1N
ROCK = PLAG-CPX-OPX PHYRIC BASALT;
Texture: PORPHYRITIC,HYALO-OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 13%)
Size(mm): 0.4-2.0 Morphology: EUHEDRAL-SUBHEDRAL
APPROX COMP AN65;
CLINOPYROXENE ( 1%)
Size(mm): 0.4-1.0 Morphology: EUHEDRAL-SUBHEDRAL
ORTHOPYROXENE ( TR%)
Size(mm): 0.5-0.8 Morphology: SUBHEDRAL
PSEDOMORPH*
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): 0.05-0.2 Morphology: LATH
APPROX COMP AN50;
CLINOPYROXENE ( 18%)
Size(mm): 0.02-0.2
OPAQUE MINERALS ( 5%)
Size(mm): 0.01-0.05
INCLUDES MAGN+ILMENITE;
GLASS ( 20%)
ORTHOPYROXENE ( 2%)
Alteration - CARBONATE ( 2%)
CLAY MINERALS ( 2%)
Vesicles -
Percent: 10
Leg : 59 Top/Bottom Interval(mm): 770/ 780 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 527.50 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 534.28 Sect/Pc #: 5/PCE 3E
ROCK = PLAG-CPX-OPX PHYRIC BASALT
THOLEIITIC BASALTIC ANDESITE?;
Texture: PORPHYRITIC,HYALO-OPHITIC;
Where sampled: PILLOW INTERIOR,FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 0.4-2.0 Morphology: EUHEDRAL-SUBHEDRAL
CLINOPYROXENE ( 2%)
Size(mm): 2.3-0.7 Morphology: EUHEDRAL-SUBHEDRAL
2VZ 50;
ORTHOPYROXENE ( 1%)
Size(mm): 0.3 Morphology: EUHEDRAL-SUBHEDRAL
PSEUDOMORPH,2VX 70-80*
Groundmass - PLAGIOCLASE ( 20%)
Size(mm): 0.04-0.3 Morphology: LATH
CLINOPYROXENE ( 15%)
Size(mm): 0.04-0.2
OPAQUE MINERALS ( 5%)
Size(mm): 0.01-0.05
INCLUDES MAGN + ILMENITE;
GLASS ( 10%)
ORTHOPYROXENE ( TR%)
Size(mm): 0.1
MICROPHENOCRYSTS?,PSEUDOMORPHS*
Alteration - CARBONATE ( 5%)
Location: CAVITY
OTHER ( 2%)
Vesicles -
Size(mm): 0.4-2.0
Percent: 25
Shape: IRREGULAR
Leg : 59 Top/Bottom Interval(mm): 900/ 930 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 537.00 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 537.92 Sect/Pc #: 1/PCE 5
ROCK = PLAG-CPX-OPX PHYRIC BASALT
THOLEIITIC BASALTIC ANDESITE?;
Texture: PORPHYRITIC,INTERSERTAL;
Where sampled: PILLOW INTERIOR,FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.4-2.0
APPROX COMP AN64-73;
CLINOPYROXENE ( 2%)
Size(mm): 0.2-1.0 Morphology: EUHEDRAL-SUBHEDRAL
ORTHOPYROXENE ( TR%)
Size(mm): 0.5-1.0 Morphology: SUBHEDRAL
PSEUDOMORPH*
Groundmass - PLAGIOCLASE ( 25%)
Size(mm): 0.05-0.4 Morphology: LATHS
CLINOPYROXENE ( 10%)
Size(mm): 0.05-0.1
OPAQUE MINERALS ( 5%)
Size(mm): 0.01-0.05
INCLUDES MAGN + ILMENITE;
GLASS ( 8%)
ORTHOPYROXENE ( TR%)
Size(mm): 0.2
PSEUDOMORPH,MICROPHENOCRYST?,ALTERED*
Alteration - CARBONATE ( 10%)
Location: VESICLES
Vesicles -
Size(mm): 0.2-0.6
Percent: 20
Size(mm): 0.6-1.5
Percent: 10
Filling: CARB
Shape: SPHERICAL
Leg : 59 Top/Bottom Interval(mm): 380/ 410 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 537.00 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 540.40 Sect/Pc #: 3/PCE 3
ROCK = PLAG-CPX-OPX PHYRIC BASALT
THOLEIITIC ANDESITE?;
Texture: PORPHYRITIC,INTERSERTAL;
Where sampled: PILLOW INTERIOR,FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.4-2.5 Morphology: EUHEDRAL
APPROX COMP AN72;
CLINOPYROXENE ( 2%)
Size(mm): 0.4-1.1 Morphology: EUHEDRAL-SUBHEDRAL
2VZ 50-70;
ORTHOPYROXENE ( TR%)
Size(mm): 0.4-1.0 Morphology: EUHEDRAL-SUBHEDRAL
FRESH AND PSEUDOMORPHED*
Groundmass - PLAGIOCLASE ( 27%)
Size(mm): 0.05-0.4
APPROX COMP AN54;
CLINOPYROXENE ( 20%)
Size(mm): 0.04-0.4
OPAQUE MINERALS ( 3%)
Size(mm): 0.01-0.1
INCLUDES MAGN + ILMENITE;
GLASS ( 15%)
ORTHOPYROXENE ( TR%)
Size(mm): 0.2
Alteration - OTHER ( 3%)
Location: GLASS Replacing: OPX
Vesicles -
Size(mm): 0.4-1.0
Percent: 20
Filling: EMPTY
Shape: IRREGULAR,
Size(mm): 0.5-3.0
Filling: EMPTY
Shape: SPHERICAL
Leg : 59 Top/Bottom Interval(mm): 200/ 230 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 546.50 Rock Type: IGNEOUS
Core: 17 Sample Midpoint(m) : 548.22 Sect/Pc #: 2/PCE 1C
ROCK = PLAG-CPX-OPX PHYRIC BASALT
ANDESITE?;
Texture: PORPHYRITIC,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 0.5-3.5
APPROX COMP AN55-60;
CLINOPYROXENE ( 1%)
Size(mm): 0.3-1.0
2VZ 30-60;
ORTHOPYROXENE ( <1%)
Size(mm): 0.4-0.8
SIZE RANGE UNCERTAIN,FRESH AND PSEUDOMORPHED*
Groundmass - PLAGIOCLASE ( 20%)
Size(mm): 0.05-0.3 Morphology: LATHS
CLINOPYROXENE ( 15%)
Size(mm): 0.03-0.1
OPAQUE MINERALS ( 3%)
Size(mm): 0.01-0.03
INCLUDES MAGN+ILMENITE;
GLASS ( 20%)
ORTHOPYROXENE ( TR%)
IDENTITY UNCERTAIN*
Alteration - OTHER ( 2%)
Vesicles -
Percent: 23
Leg : 59 Top/Bottom Interval(mm): 1090/1110 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 549.50 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 550.60 Sect/Pc #: 1/PCE 8G
ROCK = PLAG-CPX-OPX MODERATELY PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC,INTERSERTAL;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- PLAGIOCLASE ( 7%)
Size(mm): 0.4-1.5 Morphology: EUHEDRAL
APPROX COMP AN65;
CLINOPYROXENE ( 2%)
Size(mm): 0.3-1.0 Morphology: EUHEDRAL-SUBHEDRAL
2VZ 50;
ORTHOPYROXENE ( <1%)
Size(mm): 1.0-2.0 Morphology: EUHEDRAL-SUBHEDRAL
PSEDOMORPHED AND FRESH PARTS,PSEUDOMORPHED IN
GLASS ZONE*
Groundmass - PLAGIOCLASE ( 25%)
Size(mm): 0.02-0.3 Morphology: LATHS,EUHEDRAL
ALSO QUENCH XTLS,APPROX COMP AN60;
CLINOPYROXENE ( 15%)
Size(mm): 0.02-0.2 Morphology: SUBHEDRAL
ALSO QUENCH XTLS;
OPAQUE MINERALS ( TR%)
Size(mm): 0.005
INCLUDES MAGN+ILMENITE;
GLASS ( 20%)
ORTHOPYROXENE ( 0%)
Alteration - CLAY MINERALS ( 10%)
Vesicles -
Size(mm): 0.4-4.0
Percent: 20
Leg : 59 Top/Bottom Interval(mm): 230/ 260 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 565.50 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 565.74 Sect/Pc #: 1/PCE 1E
ROCK = PLAG-CPX PHYRIC BASALT;
Texture: PORPHYRITIC,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.4-3.0 Morphology: SUBHEDRAL
APPROX COMP AN65;
CLINOPYROXENE ( 1%)
Size(mm): 0.4-0.8 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 20%)
Size(mm): 0.05-0.3 Morphology: LATHS
APPROX COMP AN55;
CLINOPYROXENE ( 10%)
Size(mm): 0.03-0.2 Morphology: SUBHEDRAL
OPAQUE MINERALS ( 3%)
Size(mm): 0.01-0.03
INCLUDES MAGN + ILMENITE;
GLASS ( 10%)
ORTHOPYROXENE ( 0%)
Alteration - CARBONATE ( 10%)
Location: VESICLES Replacing: PLAG,CPX
OTHER ( 5%)
Vesicles -
Size(mm): 0.3-5.0
Percent: 30
Leg : 59 Top/Bottom Interval(mm): 320/ 350 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 565.50 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 568.84 Sect/Pc #: 3/PCE 1F
ROCK = PLAG-CPX PHYRIC BASALT;
Texture: PORPHYRITIC,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 0.4-3.0 Morphology: EUHEDRAL-SUBHEDRAL
APPROX COMP AN65;
CLINOPYROXENE ( 2%)
Size(mm): 0.4-1.0 Morphology: EUHEDRAL-SUBHEDRAL
ORTHOPYROXENE ( TR%)
Size(mm): 0.4-1.0 Morphology: SUBHEDRAL
PSEUDOMORPH*
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE ( 15%)
Size(mm): 0.02-0.3 Morphology: LATHS,EUHEDRAL
APPROX COMP AN60;
CLINOPYROXENE ( 10%)
Size(mm): 0.02-0.3 Morphology: SUBHEDRAL
OPAQUE MINERALS ( 5%)
Size(mm): 0.01-0.05
INCLUDES MAGN + ILMENITE;
GLASS ( 10%)
ORTHOPYROXENE ( 0%)
Alteration - OTHER ( 3%)
Vesicles -
Size(mm): 0.3-5.0
Percent: 40
Leg : 59 Top/Bottom Interval(mm): 230/ 260 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 607.50 Rock Type: UNIDENTIFIED
Core: 25 Sample Midpoint(m) : 607.74 Sect/Pc #: 1/PCE 3
ROCK = PLAG-CPX MODERATELY PHYRIC BASALT
CLAST IN BASALTIC BRECCIA;
Texture: MODERATELY PORPHYRITIC,HYALO-OPHITIC;
CLAST IN VOLCANICLASTIC BRECCIA*
Phenocrysts- PLAGIOCLASE ( 2%)
Size(mm): 0.4-2.0 Morphology: EUHEDRAL
CLINOPYROXENE ( 1%)
Size(mm): 0.5 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 35%)
Size(mm): 0.02-0.4 Morphology: LATHS
APPROX COMP AN54;
CLINOPYROXENE ( 17%)
Size(mm): 0.02-0.3 Morphology: SUBHEDRAL
OPAQUE MINERALS ( 5%)
Size(mm): 0.01-0.1
INCLUDES MAGN + ILMENITE;
GLASS ( 10%)
Alteration - CLAY MINERALS ( 10%)
Vesicles -
Percent: 20
Leg : 59 Top/Bottom Interval(mm): 540/ 570 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 613.00 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 615.06 Sect/Pc #: 2/PCE 1I
ROCK = CPX-PLAG SPARSELY PHYRIC BASALT;
Texture: SPARSELY PORPHYRITIC,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): 1.2
PSEUDOMORPH;
CLINOPYROXENE ( 1%)
Size(mm): 0.7 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 20%)
Size(mm): 0.02-0.3 Morphology: EUHEDRAL,LATHS
CLINOPYROXENE ( 15%)
Size(mm): 0.02-0.3 Morphology: SUBHEDRAL
OPAQUE MINERALS ( 8%)
Size(mm): 0.01-0.05 Morphology: EUHEDRAL
INCLUDES MAGN + ILMENITE;
GLASS ( 15%)
Alteration - CARBONATE ( 3%)
Location: CAVITY Replacing: PLAG
CLAY MINERALS ( 10%)
Location: CAVITY Replacing: GLASS
Vesicles -
Size(mm): 0.2-3.0
Percent: 30
Leg : 59 Top/Bottom Interval(mm): 1040/1070 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 613.00 Rock Type: TUFF
Core: 26 Sample Midpoint(m) : 617.06 Sect/Pc #: 3/PCE 1L
ROCK = TUFF;
Groundmass - PLAGIOCLASE
FRAGMENTS OF XTLS;
CLINOPYROXENE
OPAQUE MINERALS
INCLUDES MAGN + ILMENITE;
GLASS
Leg : 59 Top/Bottom Interval(mm): 780/ 820 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 622.50 Rock Type: IGNEOUS
Core: 28 Sample Midpoint(m) : 623.30 Sect/Pc #: 1/PCE 7
ROCK = CPX-PLAG SPARSELY PHYRIC BASALT;
Texture: SPARSELY PORPHYRITIC,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 0%)
PLAGIOCLASE ( TR%)
Size(mm): 0.5 Morphology: PRISMATIC
CLINOPYROXENE ( 1%)
Size(mm): 0.4 Morphology: SUBHEDRAL
SPINEL ( 0%)
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE ( 30%)
Size(mm): 0.1-0.3
CLINOPYROXENE ( 15%)
Size(mm): 0.07
OPAQUE MINERALS ( 5%)
Size(mm): 0.01-0.05
INCLUDES MAGN + ILMENITE;
GLASS ( 10%)
Alteration - CLAY MINERALS ( 20%)
Vesicles -
Percent: 20
Leg : 59 Top/Bottom Interval(mm): 410/ 440 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 641.50 Rock Type: UNIDENTIFIED
Core: 30 Sample Midpoint(m) : 644.92 Sect/Pc #: 3/PCE 1D
ROCK = VOLCANICLASTIC BRECCIA
MATRIX;
Texture: APHYRIC,APHANITIC;
Where sampled: VOLCANICLATIC BRECCIA MATRIX*
Groundmass - PLAGIOCLASE
MAGNETITE
ILMENITE
GLASS
ALTERED*
Leg : 59 Top/Bottom Interval(mm): 760/ 790 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 660.50 Rock Type: IGNEOUS
Core: 32 Sample Midpoint(m) : 661.28 Sect/Pc #: 1/PCE 1H
ROCK = APHYRIC BASALT;
Texture: APHYRIC,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): 0.05-0.5 Morphology: LATHS,EUHEDRAL
APPROX COMP AN60;
CLINOPYROXENE ( 30%)
Size(mm): 0.05-0.3 Morphology: EUHEDRAL
OPAQUE MINERALS
Size(mm): 0.01-0.1
INCLUDES MAGN + ILMENITE;
GLASS ( 15%)
ORTHOPYROXENE ( 0%)
Alteration - GLAUCONITE ( 20%)
Vesicles -
Percent: 5
Leg : 59 Top/Bottom Interval(mm): 1440/1470 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 663.50 Rock Type: IGNEOUS
Core: 33 Sample Midpoint(m) : 666.46 Sect/Pc #: 2/PCE 4C
ROCK = APHYRIC BASALT;
Texture: APHYRIC,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): 0.5-1.1 Morphology: PRISMATIC
CLINOPYROXENE ( R%)
Size(mm): 0.4 Morphology: SUBHEDRAL
PLAG AND CPX ARE MICROPHENOCRYSTS?*
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): 0.05-0.5 Morphology: LATH,EUHEDRAL
APPROX COMP AN50;
CLINOPYROXENE ( 30%)
Size(mm): 0.04-0.5 Morphology: SUBHEDRAL
OPAQUE MINERALS
Size(mm): 0.01-0.1
INCLUDES MAGN + ILMENITE;
GLASS ( 30%)
Alteration - GLAUCONITE ( 10%)
Leg : 59 Top/Bottom Interval(mm): 1250/1280 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 689.00 Rock Type: IGNEOUS
Core: 36 Sample Midpoint(m) : 694.77 Sect/Pc #: 4/PCE 7C
ROCK = OL-PLAG-CPX MODERATELY PHYRIC BASALT
NOT FRESH;
Texture: MODERATELY PORPHYRITIC,INTERSERTAL,FINE GRAINED
GROUNDMASS;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 5%)
Size(mm): 0.7-3.0
PSEUDOMORPH;
PLAGIOCLASE ( 3%)
Size(mm): 0.4-1.1 Morphology: SUBHEDRAL
APPROX COMP AN60;
CLINOPYROXENE ( 1%)
Size(mm): 0.4-1.0 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 30%)
Morphology: LATHS,EUHEDRAL
APPROX COMP AN65;
CLINOPYROXENE ( 15%)
Morphology: SUBHEDRAL
OPAQUE MINERALS ( 8%)
INCLUDES MAGN + ILMENITE;
GLASS ( 5%)
Alteration - CLAY MINERALS ( 10%)
Location: VESICLES
Vesicles -
Size(mm): 0.1-0.4
Percent: 23
Shape: IRREGULAR
Size(mm): 1.0-2.0
Shape: IRREGULAR
COME IN TWO SIZES (0.1 - 0.4 MM OR 1.0 - 2.0 MM)*
Leg : 59 Top/Bottom Interval(mm): 1380/1410 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 698.50 Rock Type: IGNEOUS
Core: 37 Sample Midpoint(m) : 701.40 Sect/Pc #: 2/PCE 3
ROCK = APHYRIC BASALT
NOT FRESH,
CLAST IN BRECCIATED BASALT;
Texture: APHYRIC,INTERSERTAL,FINE GRAIN GROUNDMASS;
Where sampled: CLAST IN BRECCIA*
Groundmass - PLAGIOCLASE ( 20%)
APPROX COMP AN65;
CLINOPYROXENE ( 25%)
OPAQUE MINERALS ( 10%)
INCLUDES MAGN + ILMENITE;
GLASS ( 15%)
Alteration - SMECTITE ( 10%)
Location: VESICLES Replacing: GLASS
Vesicles -
Size(mm): 0.1-1.0
Percent: 20
Filling: SMEC OR EMPTY
Shape: IRREGULAR,
Shape: SPHERICAL
Leg : 59 Top/Bottom Interval(mm): 810/ 840 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 708.00 Rock Type: UNIDENTIFIED
Core: 38 Sample Midpoint(m) : 710.33 Sect/Pc #: 2/PCE 3A
ROCK = APHYRIC BASALT
CLAST IN COGNATE BRECCIA;
Texture: APHYRIC,VITROPHYRIC,FINE GRAINED GROUNDMASS;
Where sampled: CLAST IN BRECCIA*
Phenocrysts- PLAGIOCLASE ( R%)
Size(mm): 0.7 Morphology: EUHEDRAL
CLINOPYROXENE ( R%)
Size(mm): 0.8 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 30%)
Morphology: LATH,SUBHEDRAL
APPROX COMP AN55;
CLINOPYROXENE ( 25%)
Morphology: SUBHEDRAL
MAGNETITE ( 0%)
ILMENITE ( 0%)
GLASS ( 20%)
Alteration - CARBONATE ( R%)
CLAY MINERALS ( 5%)
Location: VESICLES Replacing: GLASS
Vesicles -
Size(mm): 0.3-1.0
Percent: 20
Leg : 59 Top/Bottom Interval(mm): 1390/1420 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 712.50 Rock Type: IGNEOUS
Core: 39 Sample Midpoint(m) : 715.41 Sect/Pc #: 2/PCE 8
ROCK = PLAG-CPX PHYRIC BASALT;
Texture: PORPHYRITIC,HYALOPILITIC,FINE GRAINED
GROUNDMASS;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.4-2.5 Morphology: EUHEDRAL-SUBHEDRAL
APPROX COMP AN64,GLOMEROCRYSTS;
CLINOPYROXENE ( 2%)
Size(mm): 0.4-0.7 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 27%)
Morphology: LATHS,EUHEDRAL
APPROX COMP AN55;
CLINOPYROXENE ( 18%)
Morphology: SUBHEDRAL
OPAQUE MINERALS ( 7%)
INCLUDES MAGN + ILMENITE;
GLASS ( 10%)
Alteration - SMECTITE ( 10%)
Location: VESICLES
Vesicles -
Size(mm): 0.2-0.5
Percent: 16
Shape: IRREGULAR
Size(mm): 1-3
THEY COME IN TWO SIZES (0.2 - 0.5 MM OR 1 -3 MM)*
Leg : 59 Top/Bottom Interval(mm): 0/ 30 Describer: Zakariakze, G.
Hole: 448A Top of Core Depth(m) : 727.00 Rock Type: IGNEOUS
Core: 41 Sample Midpoint(m) : 728.52 Sect/Pc #: 2/PCE 1A
ROCK = APHYRIC BASALT;
Texture: APHYRIC,VITROPHYRIC;
Where sampled: MARGINAL ZONE OF BASALT DIKE*
Groundmass - PLAGIOCLASE ( 15%)
Size(mm): <0.5 Morphology: ELONGATE LATHS
CLINOPYROXENE ( 5%)
Size(mm): 0.2-0.3 Morphology: IRREGULAR GRAINS,ELONGATE
Morphology: PRISMS
OPAQUE MINERALS ( 1%)
Size(mm): <0.01
INCLUDES MAGN + ILMENITE;
GLASS ( 68%)
PALAGONITE,PARTIALLY DEVITRIFIED AND ALTERED;
ORTHOPYROXENE ( 1%)
Size(mm): <1
Alteration - CARBONATE ( 1%)
Location: VESICLES, Replacing: GLASS
Location: GROUNDMASS
CLAY MINERALS ( 1-3%)
Location: GROUNDMASS Replacing: GLASS
ZEOLITE (0.5-1%)
Location: VESICLES, Replacing: GLASS
Location: GROUNDMASS
Vesicles -
Size(mm): 0.5
Percent: 10
Filling: CARB,ZEOLITES,
Shape: IRREGULAR
Filling: OR EMPTY
MAINLY EMPTY*
Leg : 59 Top/Bottom Interval(mm): 110/ 130 Describer: Zakariakze, G.
Hole: 448A Top of Core Depth(m) : 727.00 Rock Type: IGNEOUS
Core: 41 Sample Midpoint(m) : 731.62 Sect/Pc #: 4/PCE 1B
ROCK = PLAG-OL-CPX PHYRIC BASALT;
Texture: PORPHYRITIC,INTERSERTAL;
Where sampled: BASE OF BASALT DIKE*
Phenocrysts- OLIVINE ( 1%)
Size(mm): 0.5-1 Morphology: SUBHEDRAL
COMPLETELY AS PSEUDOMORPHS;
PLAGIOCLASE ( 7-10%)
Size(mm): 1-2
APPROX COMP AN75,RARE GLOMEROMORPHS;
CLINOPYROXENE ( 1%)
Size(mm): 0.5-1 Morphology: SUBHEDRAL
GLOMEROMORPHS WITH PLAG*
Groundmass - PLAGIOCLASE ( 35%)
Size(mm): 0.3-0.4 Morphology: ELONGATE LATHS
CLINOPYROXENE ( 20%)
Size(mm): 0.05-0.1 Morphology: IRREGULAR GRAINS
OPAQUE MINERALS ( 5%)
Size(mm): 0.05 Morphology: SQUARE,IRREGULAR
INCLUDES MAGN + ILMENITE;
GLASS ( 20%)
ALMOST COMPLETELY ALTERED;
ORTHOPYROXENE ( 1%)
PERCENTAGE UNCERTAIN*
Alteration - SMECTITE
Replacing: OL,PLAG,GLASS
ZEOLITE
Replacing: GLASS,PLAG
Vesicles -
Size(mm): 0.3-0.7
Percent: 5-7
Filling: ALMOST EMPTY
Shape: IRREGULAR
LINED WITH GREEN SMEC*
Leg : 59 Top/Bottom Interval(mm): 1310/1360 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 755.50 Rock Type: IGNEOUS
Core: 44 Sample Midpoint(m) : 756.84 Sect/Pc #: 1/PCE 3
ROCK = PLAG-CPX MODERATELY PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC,VITROPHYRIC,FINE GRAINED
GROUNDMASS;
Where sampled: GLASS MARGIN*
Phenocrysts- PLAGIOCLASE ( 8%)
Size(mm): 0.4-3.0 Morphology: EUHEDRAL
APPROX COMP AN60;
CLINOPYROXENE ( <1%)
Size(mm): 0.3-0.5 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 10%)
Morphology: LATH
APPROX COMP AN55;
CLINOPYROXENE ( 2%)
Morphology: SUBHEDRAL
OPAQUE MINERALS ( 5%)
INCLUDES MAGN + ILMENITE;
GLASS ( 5%)
Alteration - CLAY MINERALS ( 50%)
Replacing: GLASS
Vesicles -
Size(mm): 0.5-1.0
Percent: 20
Shape: SUBSPHERIC
Leg : 59 Top/Bottom Interval(mm): 1450/1480 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 768.00 Rock Type: IGNEOUS
Core: 46 Sample Midpoint(m) : 769.47 Sect/Pc #: 1/PCE 8
ROCK = PLAG-CPX SPARSELY PHYRIC BASALT;
Texture: SPARSELY PORPHYRITIC,INTERSERTAL;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): 0.4-1.1 Morphology: EUHEDRAL-SUBHEDRAL
APPROX COMP AN56?;
CLINOPYROXENE ( R%)
Size(mm): 0.1-0.5 Morphology: SUBHEDRAL
OPX??*
Groundmass - PLAGIOCLASE ( 40%)
Size(mm): 0.01-0.2
CLINOPYROXENE ( 30%)
Size(mm): 0.01-0.05
OPAQUE MINERALS
Size(mm): 0.01-0.03
INCLUDES MAGN + ILMENITE;
GLASS ( 14%)
Alteration - CLAY MINERALS ( 10%)
Vesicles -
Percent: 5
Leg : 59 Top/Bottom Interval(mm): 340/ 390 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 768.00 Rock Type: IGNEOUS
Core: 46 Sample Midpoint(m) : 769.87 Sect/Pc #: 2/
ROCK = PLAG PHYRIC BASALT;
Texture: PORPHYRITIC,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 20%)
Size(mm): 0.4-2.5 Morphology: EUHEDRAL-SUBHEDRAL
APPROX COMP AN65,GLOMEROPHYRIC*
Groundmass - PLAGIOCLASE ( 25%)
Size(mm): 0.04-0.4 Morphology: LATHS
APPROX COMP AN50;
CLINOPYROXENE ( 10%)
Size(mm): 0.02-0.3 Morphology: SUBHEDRAL
OPAQUE MINERALS ( 10%)
INCLUDES MAGN + ILMENITE;
GLASS ( 15%)
Alteration - CARBONATE ( 5%)
Location: VESICLES
MAY BE REPLACING CPX?;
CLAY MINERALS ( 5%)
Location: VESICLES
Vesicles -
Size(mm): 0.5-2
Percent: 10
Leg : 59 Top/Bottom Interval(mm): 1060/1080 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 774.50 Rock Type: IGNEOUS
Core: 47 Sample Midpoint(m) : 777.07 Sect/Pc #: 2/PCE 1G
ROCK = PLAG-CPX MODERATELY PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC,HYALO-OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 5%)
Size(mm): 0.4-2.0 Morphology: EUHEDRAL-SUBHEDRAL
APPROX COMP AN60;
CLINOPYROXENE ( 1%)
Size(mm): 0.4-1.5 Morphology: EUHEDRAL-SUBHEDRAL
Groundmass - PLAGIOCLASE ( 35%)
Size(mm): 0.04-0.4 Morphology: LATHS
APPROX COMP AN52;
CLINOPYROXENE ( 20%)
Size(mm): 0.02-0.4 Morphology: SUBHEDRAL
OPAQUE MINERALS ( 10%)
Size(mm): 0.01-0.2
INCLUDES MAGN + ILMENITE;
GLASS ( 72%)
Alteration - CLAY MINERALS ( 15%)
Replacing: GLASS
Vesicles -
Size(mm): 0.5
Percent: 2
Leg : 59 Top/Bottom Interval(mm): 330/ 380 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 792.50 Rock Type: IGNEOUS
Core: 50 Sample Midpoint(m) : 794.35 Sect/Pc #: 2/PCE 1B
ROCK = PLAG-CPX PHYRIC BASALT;
Texture: PORPHYRITIC,HYALO-OPHITIC,COARSE-GRAINED
GROUNDMASS;
Where sampled: INTERIOR OF A BASALT SILL*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.5-2.0 Morphology: EUHEDRAL-SUBHEDRAL
APPROX COMP AN64;
CLINOPYROXENE ( 2%)
Size(mm): 0.4-1.0 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 35%)
Morphology: EUHEDRAL,LATHS
APPROX COMP AN45;
CLINOPYROXENE ( 20%)
OPAQUE MINERALS ( 5%)
INCLUDES MAGN + ILMENITE;
GLASS ( 10%)
Alteration - SMECTITE ( 15%)
Replacing: GLASS
Vesicles -
Size(mm): 0.5
Percent: 2
Filling: EMPTY
Shape: SPHERICAL
Leg : 59 Top/Bottom Interval(mm): 1280/1310 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 801.50 Rock Type: IGNEOUS
Core: 51 Sample Midpoint(m) : 804.30 Sect/Pc #: 2/
ROCK = PLAG-CPX MODERATELY PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC,HYALO-OPHITIC,FINE
GRAINED GROUNDMASS;
Where sampled: INTERIOR OF A BASALT DIKE*
Phenocrysts- PLAGIOCLASE ( 6%)
Size(mm): 0.4-2.0 Morphology: EUHEDRAL
APPROX COMP AN68;
CLINOPYROXENE ( <1%)
Size(mm): 0.4-0.6 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 30%)
Morphology: EUHEDRAL,LATHS
APPROX COMP AN45;
CLINOPYROXENE ( 20%)
Morphology: SUBHEDRAL
OPAQUE MINERALS ( 5%)
INCLUDES MAGN + ILMENITE;
GLASS ( 10%)
Alteration - SMECTITE ( 26%)
Replacing: GLASS
Vesicles -
Size(mm): 0.2
Percent: 2
Shape: SPHERICAL
Leg : 59 Top/Bottom Interval(mm): 780/ 810 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 810.50 Rock Type: IGNEOUS
Core: 52 Sample Midpoint(m) : 811.30 Sect/Pc #: 1/PCE 4B
ROCK = PLAG-CPX MODERATELY PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC,HYALOPILITIC,COARSE-
GRAINED GROUNDMASS;
Where sampled: FLOW INTERIOR OR SILL*
Phenocrysts- PLAGIOCLASE ( 7%)
Size(mm): 0.4-2.0 Morphology: EUHEDRAL-SUBHEDRAL
APPROX COMP AN65;
CLINOPYROXENE ( <1%)
Size(mm): 0.5 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 30%)
Morphology: EUHEDRAL,LATHS
APPROX COMP AN55;
CLINOPYROXENE ( 20%)
Morphology: PRISMATIC
OPAQUE MINERALS ( 7%)
INCLUDES MAGN + ILMENITE;
GLASS ( 5%)
Alteration - SMECTITE ( 30%)
Replacing: GLASS
Leg : 59 Top/Bottom Interval(mm): 780/ 810 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 810.50 Rock Type: IGNEOUS
Core: 52 Sample Midpoint(m) : 812.80 Sect/Pc #: 2/PCE 2E
ROCK = PLAG-CPX PHYRIC BASALT;
Texture: PORPHYRITIC,INTERSERTAL,COARSE-GRAINED
GROUNDMASS;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.4-2.0 Morphology: SUBHEDRAL
APPROX COMP AN65,GLOMEROMORPHIC;
CLINOPYROXENE ( 1%)
Size(mm): 0.5 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 35%)
Morphology: EUHEDRAL
APPROX COMP AN56;
CLINOPYROXENE ( 20%)
Morphology: PRISMATIC
OPAQUE MINERALS ( 7%)
INCLUDES MAGN + ILMENITE;
GLASS ( 5%)
Alteration - CLAY MINERALS ( 22%)
Replacing: GLASS
Vesicles -
Percent: R
Leg : 59 Top/Bottom Interval(mm): 1270/1300 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 828.50 Rock Type: IGNEOUS
Core: 54 Sample Midpoint(m) : 832.78 Sect/Pc #: 3/PCE 8C
ROCK = PLAG-CPX PHYRIC BASALT;
Texture: PORPHYRITIC,INTERSERTAL,VERY FINE GRAINED
GROUNDMASS;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): 0.3-4 Morphology: SUBHEDRAL
APPROX COMP AN55,GLOMEROMORPHIC;
CLINOPYROXENE ( 1%)
Size(mm): 0.3-1.0 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 35%)
Morphology: LATHS
APPROX COMP AN52;
CLINOPYROXENE ( 20%)
Morphology: EUHEDRAL
OPAQUE MINERALS ( 7%)
INCLUDES MAGN + ILMENITE;
GLASS ( 5%)
Alteration - CLAY MINERALS ( 17%)
Replacing: GLASS
Vesicles -
Percent: R
Leg : 59 Top/Bottom Interval(mm): 1280/1320 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 840.50 Rock Type: IGNEOUS
Core: 56 Sample Midpoint(m) : 843.30 Sect/Pc #: 2/PCE 7B
ROCK = APHYRIC BASALT
PLAG-CPX SPARSELY MICROPHYRIC BASALT;
Texture: APHYRIC,INTERSERTAL,VERY FINE GRAINED
GROUNDMASS;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 1%)
Size(mm): 0.2-0.5 Morphology: EUHEDRAL
APPROX COMP AN60,MICROPHENOS;
CLINOPYROXENE ( 1%)
Size(mm): 0.2-0.5 Morphology: LATHS
MICROPHENOS*
Groundmass - PLAGIOCLASE ( 35%)
Morphology: LATHS
APPROX COMP AN50;
CLINOPYROXENE ( 20%)
Morphology: EUHEDRAL
OPAQUE MINERALS ( 9%)
INCLUDES MAGN + ILMENITE;
GLASS ( 9%)
Alteration - CLAY MINERALS ( 15%)
Location: VESICLES Replacing: GLASS
SMEC IN VESICLES*
Vesicles -
Size(mm): 0.3-1.0
Percent: 10
Filling: SMEC
Shape: SPHERICAL
Leg : 59 Top/Bottom Interval(mm): 500/ 580 Describer: Ishi, T.
Hole: 448A Top of Core Depth(m) : 855.50 Rock Type: IGNEOUS
Core: 58 Sample Midpoint(m) : 859.04 Sect/Pc #: 3/PCE 3A
ROCK = PLAG-CPX PHYRIC BASALT;
Texture: PORPHYRITIC,HYALOPILITIC,FINE GRAINED
GROUNDMASS;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): 0.2-2.0 Morphology: EUHEDRAL-SUBHEDRAL
APPROX COMP AN65;
CLINOPYROXENE ( <1%)
Size(mm): 0.2-0.5 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 30%)
Morphology: EUHEDRAL,LATHS
APPROX COMP AN50;
CLINOPYROXENE ( 15%)
Morphology: SUBHEDRAL
OPAQUE MINERALS ( 7%)
INCLUDES MAGN + ILMENITE;
GLASS ( 10%)
Alteration - CLAY MINERALS ( 18%)
Location: VESICLES Replacing: GLASS,PLAG PHENOS
SMEC PRESENT IN VESICLES OR THEY ARE EMPTY*
Vesicles -
Size(mm): 0.2-2.0
Percent: 10
Filling: EMPTY OR SMEC
Shape: SPHERICAL
Leg : 59 Top/Bottom Interval(mm): 1300/1340 Describer: Zakariakze, G.
Hole: 448A Top of Core Depth(m) : 887.00 Rock Type: IGNEOUS
Core: 62 Sample Midpoint(m) : 888.32 Sect/Pc #: 1/PCE 2F
ROCK = PLAG-CPX-OPX PHYRIC BASALTIC ANDESITE;
Texture: PORPHYRITIC,SUBOPHITIC;
Where sampled: DIKE INTERIOR*
Phenocrysts- OLIVINE ( 0%)
PLAGIOCLASE (35-40%)
Size(mm): 1.5-4 Morphology: EUHEDRAL
GLOMEROMORPHS COMMON;
CLINOPYROXENE ( 3%)
Size(mm): 0.4-0.5 Morphology: EUHEDRAL
GLOMEROMORPHS WITH PLAG AND OPX;
ORTHOPYROXENE ( 2-4%)
Size(mm): 3-4 Morphology: SUBHEDRAL
PARTIALLY OR COMPLETELY REPLACED WITH CLAYS*
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE ( 15%)
Size(mm): <0.2-0.3 Morphology: ELONGATE LATHS
CLINOPYROXENE ( 15%)
Size(mm): <0.1 Morphology: SUBHEDRAL
OPAQUE MINERALS ( 7%)
Size(mm): 0.5 Morphology: SQUARE + TRIANGULAR SECTIONS
INCLUDES MAGN + ILMENITE;
GLASS (15-20%)
PALAGONITE,PARTIALLY REPLACED WITH CLAYS +
ZEOLITES;
QUARTZ ( 0%)
ALKALI FELDSPAR ( 0%)
Alteration - CLAY MINERALS
Replacing: OPX,GLASS
ZEOLITE
Replacing: OPX,GLASS
Vesicles -
Percent: 0
Leg : 59 Top/Bottom Interval(mm): 140/ 170 Describer: Zakariakze, G.
Hole: 448A Top of Core Depth(m) : 887.00 Rock Type: IGNEOUS
Core: 62 Sample Midpoint(m) : 888.66 Sect/Pc #: 2/PCE 1B
ROCK = PLAG-OPX-CPX PHYRIC BASALTIC ANDESITE;
Texture: PORPHYRITIC,HYALOPILITIC;
Where sampled: MARGINAL ZONE OF DIKE
Phenocrysts- OLIVINE ( 0%)
PLAGIOCLASE ( 30%)
Size(mm): TO 1.5 Morphology: EUHEDRAL
GLOMEROMORPHS;
CLINOPYROXENE ( 1%)
Size(mm): <1 Morphology: EUHEDRAL
SPINEL ( 0%)
ORTHOPYROXENE ( 2-3%)
Size(mm): 1.5
PSEUDOMORPHS ONLY*
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE ( 20%)
Size(mm): TO 0.15 Morphology: ELONGATE LATHS
CLINOPYROXENE ( 20%)
Size(mm): <0.05 Morphology: IRREGULAR GRAINS
OPAQUE MINERALS ( 6%)
Size(mm): <0.01 Morphology: IRREGULAR
INCLUDES MAGN + ILMENITE;
GLASS ( 20%)
ORTHOPYROXENE
QUESTIONABLE;
QUARTZ ( 0%)
ALKALI FELDSPAR ( 0%)
Alteration - CLAY MINERALS
Replacing: PLAG,OPX,GLASS
ZEOLITE
Replacing: GLASS
CHLORITE
Replacing: PLAG,GLASS
Vesicles -
Percent: 0
Leg : 59 Top/Bottom Interval(mm): 740/ 780 Describer: Mattey, D.
Hole: 448A Top of Core Depth(m) : 905.00 Rock Type: IGNEOUS
Core: 65 Sample Midpoint(m) : 905.76 Sect/Pc #: 1/PCE 1F
ROCK = PLAG-CPX-OL MODERATELY PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC,INTERGRANULAR;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 1%)
Size(mm): 0.5-1.5 Morphology: EUHEDRAL
PSEUDOMORPHS,GLOMEROPHYRIC;
PLAGIOCLASE ( 3%)
Size(mm): 0.3-1 Morphology: EUHEDRAL
APPROX COMP AN35-65,STRONGLY ZONED,GLOMEROPHYRIC;
CLINOPYROXENE ( 3%)
Size(mm): 0.3-0.5 Morphology: EUHEDRAL
STRONGLY ZONED,GLOMEROPHYRIC*
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE ( 50%)
Size(mm): 0.5-0.7 Morphology: LATHS
SUB FLOW ALLIGNED;
CLINOPYROXENE ( 25%)
Size(mm): 0.2-0.4 Morphology: GRANULAR
OPAQUE MINERALS ( 3%)
Size(mm): 0.05-0.1 Morphology: SUBHEDRAL OR ACICULAR TO
Morphology: SKELETAL
SUBHEDRAL OR ACICULAR TO SKELETAL IN GLASS AREAS;
GLASS ( 15%)
Alteration - CLAY MINERALS ( 15%)
Location: INTERSTITIAL, Replacing: GLASS,OL
Location: VESICLES
Vesicles -
Size(mm): 2-3
Filling: CLAY.MIN
Shape: SPHERICAL
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