Leg : 54 Top/Bottom Interval(mm): 430/ 570 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 82.00 Sect/Pc #: 1/PCE 7
ROCK = PLAG SPARSELY PHYRIC BASALT
ROCK IS FRESH,(DOLERITE);
Texture: INTERGRANULAR-INTERSERTAL*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): 0.5 Morphology: BROAD LATHS
Groundmass - PLAGIOCLASE ( 44.2%)
Morphology: MICROLITES
DIMENSIONS 0.15X0.003MM;
CLINOPYROXENE ( 38.7%)
Size(mm): 0.05 Morphology: EQUIDIMENSIONAL GRAINS
MAGNETITE ( 7.4%)
Size(mm): 0.02 Morphology: EQUIDIMENSIONAL GRAINS
GLASS ( 8.7%)
Vesicles -
Size(mm): 0.25
Percent: 1.0
Filling: NONE
Shape: ROUND
Leg : 54 Top/Bottom Interval(mm): 910/ 950 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 82.43 Sect/Pc #: 1/PCE 11
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERSERTAL*
Phenocrysts- PLAGIOCLASE ( 2-3%)
Morphology: LATHS
BROAD LATHS AS GLOMEROCRYSTS,DIMENSIONS 0.2X1.2MM*
Groundmass - PLAGIOCLASE ( 40%)
Morphology: MICROLATHS
DIMENSIONS 0.15X0.02,SOMETIMES OCCUR AS RADIAL
AGGREGATES IN PYX;
COMBINATION (15-20%)
INCLUDES MAGN+ILMENITE+GLASS;
GLASS
OCCURS IN PATCHES 0.6 MM IN SIZE*
Alteration - FERROUS OXIDE
Location: MATRIX Replacing: VOLCANIC GLASS
Vesicles -
Size(mm): 0.04
Percent: 5
Shape: ROUND
Leg : 54 Top/Bottom Interval(mm): 1290/1310 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 82.80 Sect/Pc #: 1/PCE 17A
ROCK = APHYRIC BASALT
ROCK IS FRESH;
Texture: INTERSERTAL*
Groundmass - PLAGIOCLASE ( 41.7%)
Size(mm): 0.3X0.03 Morphology: LATHS
CLINOPYROXENE ( 37.6%)
Size(mm): 0.1 Morphology: EQUIDIMENSIONAL GRAINS
MAGNETITE ( 4.6%)
Size(mm): 0.04 Morphology: SKELETAL XTLS
GLASS ( 14.7%)
PATCHES APPROX 0.6 MM IN SIZE*
Vesicles -
Percent: 1.4
Shape: IRREGULAR
IRREGULAR SHAPE DUE TO EXSOLUTION*
Leg : 54 Top/Bottom Interval(mm): 40/ 60 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 83.05 Sect/Pc #: 2/PCE 1
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERSERTAL*
Phenocrysts- PLAGIOCLASE ( 3%)
Size(mm): 0.3X0.9 Morphology: BROAD LATHS
AGGREGATES;
CLINOPYROXENE ( TR%)
Size(mm): 0.4
Groundmass - PLAGIOCLASE ( 50%)
Size(mm): 0.03X0.3 Morphology: MICROLITES
CLINOPYROXENE ( 35%)
Size(mm): 0.1 Morphology: EQUIDIMENSIONAL,SHEAF-LIKE
EQUIDIMENSIONAL GRAINS AND SHEAF-LIKE AGGREGATES
OF INCIPIENT XTLS;
COMBINATION ( 10%)
INCLUDES GLASS+MAGN+ILMENITE*
Alteration - CLAY MINERALS ( <1%)
Location: MATRIX, Replacing: VOLCANIC GLASS
Location: VESICLES
Vesicles -
Size(mm): 0.15
Percent: 1-2
Filling: SMECTITE
Shape: ROUND,
Shape: IRREGULAR
Leg : 54 Top/Bottom Interval(mm): 520/ 540 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 83.53 Sect/Pc #: 2/PCE 7A
ROCK = PLAG MOD PHYRIC BASALT
(DOLERITE);
Texture: INTERGRANULAR*
Phenocrysts- PLAGIOCLASE ( 3-5%)
Size(mm): 0.4X1.2 Morphology: BROAD LATHS
CLINOPYROXENE ( TR%)
Size(mm): 0.8 Morphology: TABULAR XTLS
Groundmass - OLIVINE ( TR%)
Size(mm): 0.2
PLAGIOCLASE ( 50%)
Size(mm): 0.08X0.4 Morphology: LATHS
DIMENSIONS 0.08X0.4,LATE FELDSPAR MATRIX IN
INTERSTICES;
CLINOPYROXENE ( 35%)
Size(mm): 0.2 Morphology: IRREGULAR GRAINS
TWINNED XTLS ARE PRESENT;
MAGNETITE ( 3-5%)
Size(mm): 0.08
Alteration - CLAY MINERALS
Location: INTERSTICES,
Location: VESICLES
Vesicles -
Size(mm): 0.4
Percent: 3-5
Filling: SMECTITE
Shape: ROUND
Leg : 54 Top/Bottom Interval(mm): 550/ 590 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 83.57 Sect/Pc #: 2/PCE 7A
ROCK = PLAG MOD PHYRIC BASALT
(DOLERITE);
Texture: INTERGRANULAR*
Phenocrysts- PLAGIOCLASE ( 3-5%)
ZONED WITH INTERGROWTH OF PYX IN OUTER ZONE,
GLOMEROPHYRIC AGGREGATES,DIMENSIONS 0.4X1.2MM*
Groundmass - PLAGIOCLASE ( 50%)
Size(mm): 0.08X0.4 Morphology: LATHS
DIMENSIONS 0.08X0.4,FELDSPARTHIC FILLINGS ARE
PRESENT IN INTERSTICES,WEDGE-LIKE LATHS OF PLAG
ALSO OCCUR AS RADIAL AGGREGATES IN CPX;
CLINOPYROXENE (35-40%)
Size(mm): 0.2
MAGNETITE ( 5%)
Size(mm): 0.08 Morphology: GRAINS
Alteration - CLAY MINERALS
Location: INTERSTICES
Vesicles -
Size(mm): 0.4
Percent: 1-2
Filling: SMEC, CALCITE
Leg : 54 Top/Bottom Interval(mm): 600/ 630 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 83.62 Sect/Pc #: 2/PCE 7B
ROCK = PLAG MOD PHYRIC BASALT
(DOLERITE);
Texture: INTERGRANULAR*
Phenocrysts- PLAGIOCLASE ( 5%)
Size(mm): 0.4X0.8 Morphology: BROAD LATHS
DIMENSIONS 0.4X0.8,GLOMEROPHYRIC AGGREGATES UP
TO 2.5MM;
CLINOPYROXENE ( TR%)
Size(mm): 0.6X0.8 Morphology: TABULAR GRAINS
Groundmass - PLAGIOCLASE ( 50%)
Morphology: LATHS
RADIAL AGGREGATES IN PYX,FELDSPATHIC FILLING IN
INTERSTICES,DIMENSIONS 0.08X0.4MM;
CLINOPYROXENE ( 40%)
Size(mm): 0.15 Morphology: IRREGULAR GRAINS
MAGNETITE ( 5%)
Size(mm): 0.08 Morphology: SKELETAL XTLS
Alteration - CLAY MINERALS
Location: INTERSTICES,
Location: VESICLES
Vesicles -
Size(mm): 0.5
Percent: 3-5
Filling: SMEC,CALCITE
Leg : 54 Top/Bottom Interval(mm): 1150/1180 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 84.17 Sect/Pc #: 2/PCE 11
ROCK = PLAG SPARSELY PHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): 0.6X1.0 Morphology: BROAD LATHS
Groundmass - PLAGIOCLASE ( 42.5%)
Size(mm): 0.1X0.6 Morphology: LATHS
DIMENSIONS 0.1X0.6MM,FELDSPATHIC FILLINGS IN THE
INTERSTICES;
CLINOPYROXENE ( 46.4%)
Size(mm): 0.2 Morphology: IRREGULAR
TWIN XTLS ARE PRESENT;
OPAQUE MINERALS ( 5.6%)
INCLUDES MAGN+ILMENITE;
MAGNETITE
Size(mm): 0.1 Morphology: SKELETAL
Alteration - CLAY MINERALS
Location: INTERSTICES Replacing: GROUNDMASS
Vesicles -
Size(mm): 0.5
Percent: 5.5
Filling: SMEC,CALCITE
Leg : 54 Top/Bottom Interval(mm): 300/ 350 Describer: Fodor, R.
Hole: 425 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 91.33 Sect/Pc #: 1/PCE 5
ROCK = APHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL;
Groundmass - PLAGIOCLASE ( 45%)
Size(mm): <0.1 Morphology: LATHS
CLINOPYROXENE ( 30%)
Size(mm): <0.03 Morphology: ANHEDRAL GRAINS
OPAQUE MINERALS ( 3%)
Size(mm): .005-.001
INCLUDED MAGN+ILMENITE;
GLASS ( 20%)
PARTLY DEVITRIFIED,SOME ALTERED*
Alteration - CLAY MINERALS ( 1%)
Location: VESICLES
Vesicles -
Size(mm): <0.05
Percent: 1
Filling: CLAY.MIN
Shape: ROUND
Leg : 54 Top/Bottom Interval(mm): 440/ 470 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 91.46 Sect/Pc #: 1/PCE 6
ROCK = PLAG SPARSELY PHYRIC BASALT
(DOLERITE);
Texture: INTERGRANULAR,INTERSERTAL*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): 1.0 Morphology: TABULAR XTLS
Groundmass - PLAGIOCLASE ( 50%)
Size(mm): 0.08X0.4 Morphology: LATHS
DIMENSIONS 0.08X0.4MM,RADIAL AGGREGATES IN PYX;
CLINOPYROXENE ( 30%)
Size(mm): 0.2 Morphology: IRREGULAR GRAINS
MAGNETITE ( 5-8%)
Size(mm): 0.1 Morphology: SKELETAL XTLS
GLASS ( 15%)
PATCHES APPROX 1.0MM IN SIZE*
Alteration - CLAY MINERALS ( 25%)
Location: INTERSTICES, Replacing: GLASS
Location: VESICLES
Vesicles -
Size(mm): 0.3
Percent: 1-2
Filling: CLAY.MINS
Leg : 54 Top/Bottom Interval(mm): 700/ 730 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 91.72 Sect/Pc #: 1/PCE 9
ROCK = PLAG MOD PHYRIC BASALT
(DOLERITE);
Texture: INTERGRANULAR*
Phenocrysts- OLIVINE ( TR%)
Size(mm): 0.2 Morphology: OVAL GRAINS
OCCURS TOGETHER WITH PLAG+PYX PHENOCRYSTS;
PLAGIOCLASE ( 5%)
Size(mm): 0.2X1.2
DIMENSIONS 0.2X1.2MM,GLOMEROPHYRIC AGGREGATES,
INTERGROWTHS OF GLASS;
CLINOPYROXENE ( TR%)
Size(mm): 0.8
Groundmass - PLAGIOCLASE ( 55%)
Size(mm): 0.1X0.5 Morphology: LATHS
DIMENSIONS 0.1X0.5,EUHEDRAL AGGREGATES IN PYX,
FELDSPATHIC MATRIX;
CLINOPYROXENE ( 35%)
Size(mm): 0.2 Morphology: IRREGULAR GRAINS
SOMETIMES GRAPHIC INTERGROWTHS WITH PLAG;
MAGNETITE ( 5%)
Size(mm): 0.08 Morphology: SKELETAL GRAINS
Alteration - CLAY MINERALS
Location: INTERSTICES Replacing: GROUNDMASS
Vesicles -
Size(mm): 0.5
Percent: TR
Filling: SMECTITE
Leg : 54 Top/Bottom Interval(mm): 930/ 960 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 91.95 Sect/Pc #: 1/PCE 11
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERGRANULAR*
Phenocrysts- PLAGIOCLASE ( 3%)
Size(mm): 1.2X0.4
DIMENSIONS 1.2X0.4MM,GLOMEROPHYRIC AGGREGATES;
CLINOPYROXENE ( TR%)
Groundmass - PLAGIOCLASE ( 50%)
Size(mm): 0.1X0.4 Morphology: LATHS
DIMENSIONS 0.1X0.4MM, FELDSPATHIC FILLING NEAR
INTERSTICES, RADIAL AGGREGATES IN PYX;
CLINOPYROXENE ( 35%)
Size(mm): 0.2 Morphology: IRREGULAR
MAGNETITE ( 5%)
Size(mm): 0.08 Morphology: GRAINS,SKELETAL XTLS
MICROCRYST GROUNDMASS ( 7%)
Alteration - CLAY MINERALS
Location: INTERSTICES Replacing: GROUNDMASS
Vesicles -
Size(mm): 0.2
Percent: <1
Leg : 54 Top/Bottom Interval(mm): 1050/1100 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 92.08 Sect/Pc #: 1/PCE 12
ROCK = PLAG-CPX PHYRIC BASALT
(DOLERITE);
Texture: INTERGRANULAR*
Phenocrysts- PLAGIOCLASE (12-15%)
Size(mm): 0.8X0.18
DIMENSIONS 0.8X0.18MM,GLOMEROPHYRIC AGGREGATES;
CLINOPYROXENE ( 1-2%)
Size(mm): 0.8X1.2
DIMENSIONS 0.8X1.2,ACCOMPANY PLAG IN GLOMEROPHYRIC
AGGREGATES*
Groundmass - OLIVINE ( 1%)
Size(mm): 0.1 Morphology: OVAL GRAINS
PLAGIOCLASE ( 45.0%)
Size(mm): 0.35X0.05 Morphology: LATHS
CLINOPYROXENE ( 35%)
Size(mm): 0.3
IRREGULAR GRAINS AND SHEAF-LIKE AGGREGATES OF
ELONGATED XTLS,GRAPHIC INTERGROWTH OF PYX+PLAG;
MAGNETITE ( 5%)
Size(mm): 0.03
Alteration - CLAY MINERALS
Location: INTERSTICES,
Location: VESICLES
Vesicles -
Size(mm): 0.3
Percent: 1-2
Filling: SMECTITE
UNEVEN DISTRIBUTION*
Leg : 54 Top/Bottom Interval(mm): 1300/1340 Describer: Fodor, R.
Hole: 425 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 92.32 Sect/Pc #: 1/PCE 15
ROCK = PLAG PHYRIC BASALT;
Texture: PORPHYRITIC,INTERGRANULAR
INTERGRANULAR IN THE GROUNDMASS*
Phenocrysts- PLAGIOCLASE ( 14%)
Size(mm): 0.5
CLINOPYROXENE ( TR%)
Size(mm): 0.1
Groundmass - PLAGIOCLASE ( 46%)
Size(mm): 0.05
CLINOPYROXENE ( 36%)
Size(mm): 0.03
MAGNETITE ( TR%)
Alteration - CLAY MINERALS ( 3%)
Location: GROUNDMASS Replacing: GLASS
GREEN*
Leg : 54 Top/Bottom Interval(mm): 1450/1480 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 92.47 Sect/Pc #: 1/PCE 16
ROCK = OL-PLAG-CPX PHYRIC BASALT
(DOLERITE),DESCRIBER DID NOT GIVE % OCCURRENCES
OF THE PHENOCRYSTS;
Texture: INTERGRANULAR,INTERSERTAL
THESE TERMS APPLY ONLY TO THE GROUNDMASS*
Phenocrysts- OLIVINE ( 0.3%)
Size(mm): 1.6
DIMENSIONS 2.8X1.2MM;
CLINOPYROXENE
Size(mm): 2X1.6
PHENOCRYSTS OF PLAG+CPX OCCUR AS GLOMEROPHYRIC
AGGREGATES*
Groundmass - PLAGIOCLASE ( 41.6%)
Size(mm): 0.2X0.08 Morphology: LATHS
DIMENSIONS 0.2X0.08MM,WEDGE-LIKE XTLS FORM
RADIAL AGGREGATES IN PYX;
CLINOPYROXENE ( 46.3%)
Size(mm): 0.2 Morphology: IRREGULAR GRAINS
COMBINATION ( 6.2%)
INCLUDES MAGN+ILMENITE+GLASS;
MAGNETITE
Size(mm): 0.1 Morphology: SKELETAL
Alteration - CLAY MINERALS ( 5.6%)
Location: INTERSTICES,
Location: VESICLES
Leg : 54 Top/Bottom Interval(mm): 260/ 280 Describer: Fodor, R.
Hole: 425 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 100.77 Sect/Pc #: 1/PCE 9
ROCK = PLAG SPARSELY-MICROPHYRIC BASALT
SLIGHTLY ALTERED;
Texture: INTERGRANULAR,MICROPHYRIC*
Phenocrysts- PLAGIOCLASE ( 1%)
Size(mm): <0.06
MICROPHENOCRYSTS;
Groundmass - PLAGIOCLASE ( 50%)
Size(mm): <0.04 Morphology: LATHS
CLINOPYROXENE ( 40%)
Size(mm): <0.03 Morphology: ANHEDRAL
OPAQUE MINERALS ( 4%)
Size(mm): .005-.01
INCLUDES MAGN+ILMENITE;
GLASS ( 3%)
ALTERED*
Alteration - CLAY MINERALS ( 1%)
Replacing: LINING VESICLES
Vesicles -
Size(mm): <0.05
Shape: ROUND
VESICLES ARE LINED;
Leg : 54 Top/Bottom Interval(mm): 590/ 660 Describer: Fodor, R.
Hole: 425 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 101.13 Sect/Pc #: 1/PCE 9
ROCK = PLAG SPARSELY MICROPHYRIC BASALT
SLIGHTLY ALTERED;
Texture: APHANITIC*
Phenocrysts- PLAGIOCLASE
Size(mm): <0.1 Morphology: SUBHEDRAL,TABULAR
MICROPHENOCRYSTS*
Groundmass - PLAGIOCLASE ( 40%)
Size(mm): <0.02
CLINOPYROXENE ( 40%)
Size(mm): <0.01
GLASS ( 15%)
BLACK,MOSTLY FRESH,SOME ALTERED*
Vesicles -
Size(mm): <0.01
Percent: 1
Leg : 54 Top/Bottom Interval(mm): 990/1010 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 101.50 Sect/Pc #: 1/PCE 14
ROCK = PLAG SPARSELY PHYRIC BASALT;
Texture: HYALOPILITIC*
Phenocrysts- PLAGIOCLASE ( 1%)
Size(mm): 0.2X0.4 Morphology: BROAD LATHS
DIMENSIONS 0.2X0.4MM,LATHS ARE IN CLUSTERS*
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): 0.008X0.14 Morphology: MICROLITES
CLINOPYROXENE ( 50%)
Size(mm): 0.02
IRREGULAR GRAINS AND SHEAF-LIKE AGGREGATES OF
INCIPIENT XTLS;
OPAQUE MINERALS
Size(mm): 0.004
INCLUDES MAGN+ILMENITE;
GLASS ( 20%)
PYRITE
Alteration - CLAY MINERALS
Location: INTERSTICES Replacing: VOLCANIC GLASS
Vesicles -
Size(mm): <0.02
Filling: SMECTITE
Shape: IRREGULAR
Leg : 54 Top/Bottom Interval(mm): 1060/1100 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 101.58 Sect/Pc #: 1/PCE 15
ROCK = PLAG SPARSELY PHYRIC BASALT;
Texture: PILOTAXITIC*
Phenocrysts- PLAGIOCLASE ( <1%)
DIMENSIONS 0.8X0.1MM*
Groundmass - OLIVINE ( 0.9%)
Size(mm): 0.04X0.01 Morphology: EQUIDIMENSIONAL GRAINS
PLAGIOCLASE ( 17.7%)
Size(mm): 0.15X0.01 Morphology: MICROLITES
DIMENSIONS 0.15X0.01, SHOW FLUIDAL ORIENTATION;
CLINOPYROXENE ( 3.1%)
INCIPIENT XTLS;
COMBINATION ( 78.3%)
INCLUDES MAGN+ILMENITE+GLASS*
Leg : 54 Top/Bottom Interval(mm): 670/ 690 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 102.68 Sect/Pc #: 2/PCE 7
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL*
Phenocrysts- OLIVINE ( 1%)
Size(mm): 0.01 Morphology: OVAL GRAINS
OCCURS TOGETHER WITH PLAG;
PLAGIOCLASE ( 2-3%)
Size(mm): 0.2X0.5 Morphology: BROAD LATHS
DIMENSIONS 0.2X0.5, GLOMEROPHYRIC AGGREGATES*
Groundmass - OLIVINE ( 1-2%)
PSUEDOMORPHS;
PLAGIOCLASE ( 40%)
Size(mm): 0.04X0.3 Morphology: MICROLITES
CLINOPYROXENE ( 40%)
Size(mm): 0.008 Morphology: IRREGULAR GRAINS
COMBINATION ( 15%)
INCLUDES MAGN+ILMENITE+GLASS;
MAGNETITE
Size(mm): 0.002 Morphology: SKELETAL XTLS
Alteration - CLAY MINERALS
Location: INTERSTICES Replacing: VOLCANIC GLASS
IDDINGSITE
Replacing: OLIVINE
Vesicles -
Percent: 0
Leg : 54 Top/Bottom Interval(mm): 1070/1100 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 103.09 Sect/Pc #: 2/PCE 12
ROCK = OL-PLAG SPARSELY PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL*
Phenocrysts- COMBINATION ( 1-2%)
INCLUDES OL+PLAG;
OLIVINE
Size(mm): 0.2X0.4
DIMENSIONS 0.2X0.4, COMPLETELY ALTERED;
PLAGIOCLASE
Size(mm): 0.8X0.5
DIMENSIONS 0.8X0.5, GLOMEROPHYRIC AGGREGATES*
Groundmass - PLAGIOCLASE ( 45%)
Size(mm): 0.05X0.3 Morphology: MICROLITES
CLINOPYROXENE ( 40%)
Size(mm): 0.05 Morphology: IRREGULAR GRAINS
INCIPIENT XTLS;
COMBINATION ( 15%)
INCLUDES MAGN+ILMENITE+GLASS+OPX;
MAGNETITE
Morphology: SKELETAL XTLS
Alteration - CARBONATE ( <1%)
Location: GROUNDMASS
PATCHES;
CLAY MINERALS ( 1-2%)
Location: INTERSTICES
Vesicles -
Size(mm): 0.5
Percent: TR
Filling: SMECTITE
Shape: ROUND
Leg : 54 Top/Bottom Interval(mm): 1450/1470 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 103.46 Sect/Pc #: 2/PCE 16
ROCK = MICRODOLERITE;
Texture: INTERGRANULAR*
Groundmass - PLAGIOCLASE ( 40%)
Size(mm): 0.15X0.03
FORM RADIAL AGGREGATES IN PYX;
CLINOPYROXENE ( 49.8%)
Size(mm): 0.1
MAGNETITE ( 7.9%)
Size(mm): 0.05
GLASS ( 2.3%)
PYRITE
VEIN 0.03-0.2MM WIDE INTERSECTS THE ROCK*
Alteration - CLAY MINERALS
Location: INTERSTICES Replacing: VOLCANIC GLASS
Leg : 54 Top/Bottom Interval(mm): 30/ 50 Describer: Fodor, R.
Hole: 425 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 103.54 Sect/Pc #: 3/PCE 1
ROCK = PLAG SPARSELY MICROPHYRIC BASALT
% ABUNDANCE OF PLAG MICROPHENOCRYSTS NOT NOTED;
Texture: INTERGRANULAR*
Phenocrysts- PLAGIOCLASE
Size(mm): <0.07 Morphology: SUBHEDRAL
MICROPHENOCRYSTS*
Groundmass - PLAGIOCLASE ( 50%)
Size(mm): <0.05 Morphology: LATHS
CLINOPYROXENE ( 45%)
Size(mm): <0.02 Morphology: ANHEDRAL
OPAQUE MINERALS ( 3%)
Size(mm): .002
INCLUDES ILMENITE+MAGN;
GLASS ( 1%)
ALTERED TO GREEN CLAY*
Alteration - CLAY MINERALS ( 1%)
Replacing: GLASS
Vesicles -
Size(mm): <0.02
Percent: TR
Filling: CLAY.MINS
Shape: ROUND
CLAY.MIN IS GREEN*
Leg : 54 Top/Bottom Interval(mm): 620/ 630 Describer: Fodor, R.
Hole: 425 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 104.13 Sect/Pc #: 3/PCE 9
ROCK = APHYRIC BASALT;
Texture: INTERGRANULAR*
Phenocrysts- PLAGIOCLASE
Size(mm): 0.06
MICROPHENOCRYSTS*
Groundmass - PLAGIOCLASE ( 50%)
Size(mm): 0.02
CLINOPYROXENE ( 49%)
Size(mm): 0.01
MAGNETITE ( 1%)
Leg : 54 Top/Bottom Interval(mm): 690/ 720 Describer: Dmitriev, Y.
Hole: 425 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 104.21 Sect/Pc #: 3/PCE 10
ROCK = PLAG SPARSELY PHYRIC BASALT
(DOLERITE);
Texture: INTERGRANULAR*
Phenocrysts- PLAGIOCLASE ( 1%)
Size(mm): 0.2X0.6 Morphology: BROAD LATHS
Groundmass - PLAGIOCLASE ( 35%)
Size(mm): 0.02X0.2 Morphology: MICROLITES
DIMENSIONS 0.02X0.2MM,FELDSPATHIC FILLING IN
INTERSTICES;
CLINOPYROXENE ( 50%)
Size(mm): 0.05 Morphology: IRREGULAR GRAINS
MAGNETITE ( 9%)
Size(mm): 0.05 Morphology: SKELETAL GRAINS
Vesicles -
Size(mm): 0.7
Percent: TR
Filling: EMPTY
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