Leg : 63 Top/Bottom Interval(mm): 1330/1350 Describer: Shibata, T. Hole: 470A Top of Core Depth(m) : 166.50 Rock Type: IGNEOUS Core: 7 Sample Midpoint(m) : 169.34 Sect/Pc #: 2/PCE 4G ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,INTERGRANULAR-SUBOPHITIC GROUNDMASS; Where sampled: PILLOW INTERIOR* Phenocrysts- OLIVINE ( 4%) Size(mm): 0.5-1.0 Morphology: EUHEDRAL PARTLY OR COMPLETELY ALTERED; PLAGIOCLASE ( 4%) Size(mm): 0.5-2.0 Morphology: EUHEDRAL-SUBHEDRAL SPINEL ( TR%) Size(mm): 0.1 Morphology: EUHEDRAL Groundmass - OLIVINE ( 2%) Size(mm): 0.05-0.2 Morphology: PRISMATIC-ANHEDRAL,EQUANT PLAGIOCLASE ( 40%) Size(mm): 0.05-0.3 Morphology: ACICULAR PRISMS CLINOPYROXENE ( 42%) Size(mm): 0.1-0.5 Morphology: ANHEDRAL OPAQUE MINERALS ( 6%) Morphology: NEEDLES Alteration - CARBONATE Replacing: OL CLAY MINERALS Location: VESICLES, Replacing: OL Location: CRACKS BROWN* Vesicles - Size(mm): 0.2-0.3 Percent: 2 Filling: CLAY.MIN Shape: CIRCULAR FILLING IS BROWN CLAY* Leg : 63 Top/Bottom Interval(mm): 1330/1340 Describer: Shibata, T. Hole: 470A Top of Core Depth(m) : 166.50 Rock Type: IGNEOUS Core: 7 Sample Midpoint(m) : 170.84 Sect/Pc #: 3/PCE 6 ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,SUBVARIOLITIC GROUNDMASS; Where sampled: NEXT TO GLASSY MARGIN* Phenocrysts- OLIVINE ( TR%) Size(mm): 0.5 Morphology: EUHEDRAL PSEUDOMORPHS--COMPLETELY ALTERED; PLAGIOCLASE ( 2%) Size(mm): 0.5 Morphology: EUHEDRAL Groundmass - OLIVINE ( 4%) Size(mm): 0.01-0.05 Morphology: EQUANT-EUHEDRAL PLAGIOCLASE ( 40%) Size(mm): 0.05-0.1 Morphology: SKELETAL,HOLLOW,ACICULAR CLINOPYROXENE ( 40%) Size(mm): 0.01-0.1 Morphology: FEATHERY,DENDRITIC OPAQUE MINERALS ( 5%) MICROCRYST GROUNDMASS ( 9%) Alteration - CARBONATE Location: VESICLES Replacing: OL CALCITE IN VESICLES; CLAY MINERALS Location: VESICLES, Replacing: OL Location: CRACKS Vesicles - Size(mm): 0.2 Percent: TR Filling: CALCITE, Shape: CIRCULAR Filling: CLAY.MIN Leg : 63 Top/Bottom Interval(mm): 690/ 710 Describer: Shibata, T. Hole: 470A Top of Core Depth(m) : 171.00 Rock Type: IGNEOUS Core: 8 Sample Midpoint(m) : 171.70 Sect/Pc #: 1/PCE 3C ROCK = PLAG SPARSELY PHYRIC BASALT; Texture: SPARSELY PORPHYRITIC,GLOMEROPORPHYRITIC, INTERGRANULAR GROUNDMASS; Where sampled: PILLOW INTERIOR* Phenocrysts- PLAGIOCLASE ( 2%) Size(mm): 0.3-1.0 Morphology: EUHEDRAL PHENOS AND MICROPHENOS* Groundmass - OLIVINE ( 3%) Size(mm): 0.05-0.08 Morphology: ANHEDRAL,EQUANT PLAGIOCLASE ( 42%) Size(mm): 0.03-0.2 Morphology: SKELETAL,HOLLOW CLINOPYROXENE ( 42%) Size(mm): 0.05-0.2 Morphology: FEATHERY,DENDRITIC OPAQUE MINERAL ( 10%) Size(mm): 0.01-0.05 Morphology: SKELETAL-EQUANT Alteration - CARBONATE Location: VEIN CLAY MINERALS Location: VESICLES,OL Vesicles - Size(mm): 0.2 Percent: 1 Filling: CLAY.MIN Shape: CIRCULAR FILLING IS BROWNISH GREEN CLAY* Leg : 63 Top/Bottom Interval(mm): 950/ 980 Describer: Shibata, T. Hole: 470A Top of Core Depth(m) : 171.00 Rock Type: IGNEOUS Core: 8 Sample Midpoint(m) : 174.97 Sect/Pc #: 3/PCE 3C ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,INTERSERTAL,INTERGRANULAR GROUNDMASS; Where sampled: NEXT TO GLASSY MARGIN* Phenocrysts- OLIVINE ( 1%) Size(mm): 1 Morphology: EUHEDRAL COMPLETELY ALTERED--PSEUDOMORPHS* PLAGIOCLASE ( 2%) Size(mm): 0.5-1 Morphology: EUHEDRAL Groundmass - OLIVINE ( 2%) Size(mm): 0.05-0.2 Morphology: EUHEDRAL-EQUANT PLAGIOCLASE ( 38%) Size(mm): 0.05-0.3 Morphology: SKELETAL CLINOPYROXENE ( 40%) Size(mm): 0.03-0.3 Morphology: SKELETAL-FEATHERY OPAQUE MINERALS ( 5%) MICROCRYST GROUNDMASS ( 9%) Alteration - CARBONATE Location: VEINS CLAY MINERALS Location: VESICLES Replacing: OL ALSO FOUND IN THE INTERSTICES BETWEEN PLAG LATHS* Vesicles - Size(mm): 0.2-0.4 Percent: 3 Filling: CLAY.MIN Shape: CIRCULAR FILLING IS GREEN CLAY* Leg : 63 Top/Bottom Interval(mm): 650/ 680 Describer: Shibata, T. Hole: 470A Top of Core Depth(m) : 180.50 Rock Type: IGNEOUS Core: 9 Sample Midpoint(m) : 182.67 Sect/Pc #: 2/PCE 3E ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,INTERGRANULAR-INTERSERTAL GROUNDMASS; Where sampled: NEXT TO GLASSY MARGIN* Phenocrysts- OLIVINE ( 1%) Size(mm): 0.5 Morphology: EUHEDRAL PARTLY ALTERED; PLAGIOCLASE ( 2%) Size(mm): 0.5-1 Morphology: EUHEDRAL Groundmass - OLIVINE ( 3%) Size(mm): 0.05-0.1 Morphology: EUHEDRAL, Morphology: EQUANT-SLENDER PRISMATIC PLAGIOCLASE ( 34%) Size(mm): 0.05-0.3 Morphology: SKELETAL CLINOPYROXENE ( 35%) Size(mm): 0.03-0.2 Morphology: SKELETAL,FEATHERY,DENDRITIC OPAQUE MINERALS ( 7%) MICROCRYST GROUNDMASS ( 15%) Alteration - CLAY MINERALS Location: VESICLES, Location: CRACKS ALSO FOUND IN THE INTERSTICES BETWEEN PLAG LATHS AND PYROXENES* Vesicles - Size(mm): 0.2-0.4 Percent: 3 Filling: CLAY.MIN Shape: CIRCULAR FILLING IS BROWN CLAY* Leg : 63 Top/Bottom Interval(mm): 340/ 360 Describer: Shibata, T. Hole: 470A Top of Core Depth(m) : 180.50 Rock Type: IGNEOUS Core: 9 Sample Midpoint(m) : 185.35 Sect/Pc #: 4/PCE 1B ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,GLOMEROPORPHYRITIC, INTERGRANULAR-SUBOPHITIC GROUNDMASS* Phenocrysts- OLIVINE ( 1%) Size(mm): 0.5-1 Morphology: EUHEDRAL PARTLY ALTERED; PLAGIOCLASE ( 3%) Size(mm): 0.5-2 Morphology: EUHEDRAL Groundmass - OLIVINE ( 5%) Size(mm): 0.03-0.2 Morphology: PRISMATIC-ANHEDRAL EQUANT PLAGIOCLASE ( 41%) Size(mm): 0.1-0.5 Morphology: SLENDER LATHS CLINOPYROXENE ( 40%) Size(mm): 0.05-1 Morphology: ANHEDRAL OPAQUE MINERALS ( 8%) Size(mm): 0.05-0.1 Alteration - CLAY MINERALS Location: VESICLES Replacing: OL ALSO FOUND IN THE INTERSTICES BETWEEN PLAG LATHS AND CLINOPYROXENES* Vesicles - Size(mm): 0.2-0.4 Percent: 2 Filling: CLAY.MIN Shape: CIRCULAR FILLING IS BROWN CLAY* Leg : 63 Top/Bottom Interval(mm): 750/ 800 Describer: Shibata, T. Hole: 470A Top of Core Depth(m) : 189.50 Rock Type: IGNEOUS Core: 10 Sample Midpoint(m) : 190.28 Sect/Pc #: 1/PCE 8B ROCK = PLAG MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,GLOMEROPORPHYRITIC, INTERGRANULAR-SUBOPHITIC GROUNDMASS* Phenocrysts- OLIVINE ( TR%) Size(mm): 0.5-1 Morphology: EUHEDRAL PARTLY ALTERED; PLAGIOCLASE ( 3%) Size(mm): 0.5-1.5 Morphology: EUHEDRAL Groundmass - OLIVINE ( 4%) Size(mm): 0.03-0.2 Morphology: PRISMATIC-ANHEDRAL,EQUANT PLAGIOCLASE ( 41%) Size(mm): 0.1-0.5 Morphology: SLENDER LATHS CLINOPYROXENE ( 43%) Size(mm): 0.05-1 Morphology: ANHEDRAL OPAQUE MINERALS ( 6%) Size(mm): 0.05-0.1 Alteration - CLAY MINERALS Location: VESICLES Replacing: OL ALSO FOUND IN THE INTERSTICES BETWEEN PLAG LATHS AND CLINOPYROXENES* Vesicles - Size(mm): 0.2-0.4 Percent: 3 Filling: CLAY.MIN Shape: CIRCULAR FILLING IS BROWN CLAY* Leg : 63 Top/Bottom Interval(mm): 340/ 370 Describer: Shibata, T. Hole: 470A Top of Core Depth(m) : 194.50 Rock Type: IGNEOUS Core: 11 Sample Midpoint(m) : 194.86 Sect/Pc #: 1/PCE 4B ROCK = PLAG MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,INTERSERTAL GROUNDMASS* Phenocrysts- PLAGIOCLASE ( 2%) Size(mm): 0.5-1 Morphology: EUHEDRAL Groundmass - PLAGIOCLASE ( 36%) Size(mm): 0.03-0.1 Morphology: SKELETAL NEEDLES CLINOPYROXENE ( 35%) Size(mm): 0.03-0.1 Morphology: FEATHERY,ANHEDRAL OPAQUE MINERALS ( 15%) Size(mm): 0.005-0.01 MICROCRYST GROUNDMASS ( 7%) DEVITRIFIED GLASS* Vesicles - Size(mm): 0.1 Percent: 5 Filling: VOID Shape: CIRCULAR Leg : 63 Top/Bottom Interval(mm): 350/ 360 Describer: Shibata, T. Hole: 470A Top of Core Depth(m) : 198.50 Rock Type: IGNEOUS Core: 12 Sample Midpoint(m) : 198.86 Sect/Pc #: 1/PCE 3D ROCK = APHYRIC BASALT ALTERED; Texture: APHYRIC,HYPOCRYSTALLINE,SUBVARIOLITIC; Where sampled: NEXT TO GLASSY MARGIN* Groundmass - PLAGIOCLASE ( 15%) Size(mm): 0.01-0.1 Morphology: SKELETAL,NEEDLES CLINOPYROXENE ( 10%) Size(mm): 0.01-0.1 Morphology: SKELETAL,FEATHERY OPAQUE MINERALS ( 5%) GLASS ( 70%) DEVITRIFIED OR ALTERED GLASS* Alteration - CARBONATE Location: VESICLES CLAY MINERALS Location: MATRIX ZEOLITE Location: VESICLES Vesicles - Size(mm): 0.3-0.5 Percent: 5 Filling: ZEOLITE Shape: IRREGULAR- Shape: CIRCULAR ONLY SOME FILLED BY ZEOLITE* Leg : 63 Top/Bottom Interval(mm): 300/ 320 Describer: Shibata, T. Hole: 470A Top of Core Depth(m) : 207.50 Rock Type: IGNEOUS Core: 13 Sample Midpoint(m) : 207.81 Sect/Pc #: 1/PCE 4 ROCK = APHYRIC BASALT; Texture: APHYRIC,SUBOPHITIC,INTERSERTAL* Groundmass - OLIVINE ( 3%) Size(mm): 0.05-0.1 Morphology: ANHEDRAL,EQUANT PARTLY ALTERED; PLAGIOCLASE ( 41%) Size(mm): 0.1-1 Morphology: PRISMATIC,LATHS CLINOPYROXENE ( 40%) Size(mm): 0.1-2 Morphology: ANHEDRAL 2VZ 35-45; OPAQUE MINERALS ( 8%) Size(mm): 0.01-0.1 Morphology: ACICULAR MICROCRYST GROUNDMASS ( 8%) Alteration - CLAY MINERALS Replacing: OL ALSO FOUND IN THE INTERSTICES BETWEEN PLAG LATHS AND CLINOPYROXENES* Leg : 63 Top/Bottom Interval(mm): 670/ 690 Describer: Shibata, T. Hole: 470A Top of Core Depth(m) : 207.50 Rock Type: IGNEOUS Core: 13 Sample Midpoint(m) : 208.18 Sect/Pc #: 1/PCE 8 ROCK = APHYRIC BASALT; Texture: APHYRIC,INTERGRANULAR-INTERSERTAL MATRIX* Phenocrysts- PLAGIOCLASE ( 3%) Size(mm): 0.2-0.4 Morphology: EUHEDRAL MICROPHENOS* Groundmass - PLAGIOCLASE ( 37%) Size(mm): 0.01-0.1 Morphology: PRISMATIC,SLENDER LATHS CLINOPYROXENE ( 40%) Size(mm): 0.01-0.1 Morphology: ANHEDRAL,EQUANT OPAQUE MINERALS ( 10%) Size(mm): 0.01-0.03 MICROCRYST GROUNDMASS ( 7%) Alteration - CLAY MINERALS Location: VESICLES, Location: MATRIX Vesicles - Size(mm): 0.2-0.3 Percent: 3 Filling: CLAY.MIN Shape: CIRCULAR FILLING IS BROWNISH GREEN CLAY* |
Cite as: Deep Sea Drilling Project (1989): Archive of Core and Site/Hole Data and Photographs from the Deep Sea Drilling Project (DSDP). National Geophysical Data Center, NOAA. doi:10.7289/V54M92G2 [access date]
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