Leg : 65 Top/Bottom Interval(mm): 1210/1230 Describer: Robinson, P. Hole: 482C Top of Core Depth(m) : 132.00 Rock Type: IGNEOUS Core: 9 Sample Midpoint(m) : 133.22 Sect/Pc #: 1/PCE 13 ROCK = APHYRIC BASALT; Texture: APHYRIC,FINE- TO MEDIUM-GRAINED,INTERGRANULAR- SUBOPHITIC; Where sampled: FLOW INTERIOR BUT NEAR TO MARGIN* Groundmass - OLIVINE ( 1%) Size(mm): 0.2-0.5 Morphology: SUBHEDRAL IDENTITY QUESTIONABLE--SUBHEDRAL CLOTS OF SMEC; PLAGIOCLASE ( 45%) Size(mm): TO 1 Morphology: SUBHEDRAL-EUHEDRAL FRESH; CLINOPYROXENE ( 40%) Size(mm): TO 0.5 Morphology: ANHEDRAL PARTLY INTERGROWN WITH PLAG,2VZ=40,FRESH; MAGNETITE ( 3-5%) Size(mm): TO 0.2 Morphology: SUBHEDRAL-ANHEDRAL MOSTLY IN INTERSTITIAL PATCHES; MICROCRYST GROUNDMASS ( 10%) INTERSTITIAL MATERIAL,MOSTLY SMEC WITH LESSER FEL? AND OPAL? (COLORLESS ISOTROPIC MATERIAL WITH HIGH NEGATIVE RELIEF); OPAL IDENTITY QUESTIONABLE (COLORLESS ISOTROPIC MATERIAL WITH HIGH NEGATIVE RELIEF),INTERSTITIAL MATERIAL,MINOR; FELDSPAR IDENTITY QUESTIONABLE,INTERSTITIAL MATERIAL,MINOR* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL? + SOME INTERSTITIAL MATERIAL REPLACED BY GREENISH-BROWN SMEC; CARBONATE Location: VESICLES VESICLES FILLED WITH SMEC + MINOR CARB* Vesicles - Size(mm): TO 0.5 Percent: 1 Filling: SMEC,CARB Shape: ROUND FILLED WITH SMEC + MINOR CARB* Leg : 65 Top/Bottom Interval(mm): 750/ 760 Describer: Robinson, P. Hole: 482C Top of Core Depth(m) : 139.00 Rock Type: IGNEOUS Core: 10 Sample Midpoint(m) : 141.26 Sect/Pc #: 2/PCE 4 ROCK = APHYRIC BASALT; Texture: APHYRIC,MEDIUM-GRAINED,INTERGRANULAR-SUBOPHITIC; Where sampled: FLOW INTERIOR* Groundmass - OLIVINE ( 2-3%) Size(mm): TO 0.4 Morphology: SUBHEDRAL-ANHEDRAL COMPLETELY REPLACED BY SMEC; PLAGIOCLASE (40-45%) Size(mm): TO 1.5 Morphology: EUHEDRAL-SUBHEDRAL FRESH; CLINOPYROXENE ( 40%) Size(mm): 0.2-0.7 Morphology: ANHEDRAL OFTEN PARTLY INTERGROWN WITH PLAG,2VZ=40,FRESH; MAGNETITE ( 3-5%) Size(mm): TO 0.2 Morphology: SUBHEDRAL-ANHEDRAL MOSTLY IN INTERSTITIAL PATCHES; MICROCRYST GROUNDMASS (10-15%) INTERSTITIAL MATERIAL,MOSTLY SMEC WITH MINOR FEL? + APATITE + TRACES OF GREEN AMPH?; FELDSPAR IDENTITY QUESTIONABLE,MINOR,INTERSTITIAL; APATITE MINOR,INTERSTITIAL; AMPHIBOLE ( TR%) IDENTITY QUESTIONABLE,GREEN,INTERSTITIAL* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL REPLACED BY SMEC + MINOR CARB,INTERSTITIAL MATERIAL REPLACED BY SMEC; CARBONATE Replacing: OL OL REPLACED BY SMEC + MINOR CARB* Vesicles - Size(mm): 1-2 Percent: 1-5 Location: RANDOM Filling: EMPTY,SMEC IRREGULARLY DISTRIBUTED,OPEN OR PARTLY FILLED WITH SMEC* Leg : 65 Top/Bottom Interval(mm): 1150/1170 Describer: Robinson, P. Hole: 482C Top of Core Depth(m) : 148.00 Rock Type: IGNEOUS Core: 11 Sample Midpoint(m) : 149.16 Sect/Pc #: 1/PCE 10 ROCK = APHYRIC BASALT; Texture: APHYRIC,MEDIUM-GRAINED,INTERGRANULAR-SUBOPHITIC; Where sampled: FLOW INTERIOR* Groundmass - OLIVINE ( 1-2%) Size(mm): TO 0.5 Morphology: SUBHEDRAL IDENTITY QUESTIONABLE--COMPLETELY REPLACED BY SMEC; PLAGIOCLASE ( 55%) Size(mm): TO 1 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE (30-35%) Size(mm): TO 0.5 Morphology: ANHEDRAL PARTLY INTERGROWN WITH PLAG,2VZ=40; MAGNETITE ( 2%) Size(mm): 0.05-0.1 Morphology: SUBHEDRAL MOSTLY IN INTERSTITIAL PATCHES; MICROCRYST GROUNDMASS ( 10%) INTERSTITIAL MATERIAL,REPLACED BY YELLOW-BROWN SMEC,MINOR APATITE; APATITE MINOR,INTERSTITIAL* Alteration - Location: INTERSTITIAL Replacing: OL OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC* Vesicles - Percent: 0 Leg : 65 Top/Bottom Interval(mm): 210/ 240 Describer: Robinson, P. Hole: 482C Top of Core Depth(m) : 148.00 Rock Type: IGNEOUS Core: 11 Sample Midpoint(m) : 149.72 Sect/Pc #: 2/PCE 2 ROCK = APHYRIC BASALT HIGHLY ALTERED; Texture: APHYRIC,MEDIUM-GRAINED,INTERGRANULAR-SUBOPHITIC* Groundmass - OLIVINE ( 2%) Size(mm): 0.2-0.8 IDENTITY QUESTIONABLE--POSSIBLE PSEUDOMORPHS OF SMEC; PLAGIOCLASE ( 50%) Size(mm): 0.3-1.2 Morphology: SUBHEDRAL,LATHS PARTLY REPLACED BY SMEC; CLINOPYROXENE ( 35%) Size(mm): 0.5-1 Morphology: ANHEDRAL PARTLY REPLACED BY SMEC + CELADONITE? + ACTINOLITE + CLINOZOISITE?; OPAQUE MINERALS ( 2-3%) MOSTLY PYRITE; MICROCRYST GROUNDMASS ( 10%) INTERSTITIAL MATERIAL,ALTERED TO SMEC* Alteration - SMECTITE Replacing: OL,CPX OL? TO SMEC,CPX TO SMEC + ACTINOLITE + ?CLINOZOISITE; ACTINOLITE Replacing: CPX CPX TO SMEC + ACTINOLITE + ?CLINOZOISITE; CLINOZOISITE Replacing: CPX CPX TO SMEC + ACTINOLITE + ?CLINOZOISITE; SPHENE Location: INTERSTITIAL SOME SPHENE? IN INTERSTITIAL AREAS; OTHER UNKNOWN SECONDARY MINERAL,1 GRAIN,COLORLESS, UNIAXIAL (-),HIGH POSITIVE RELIEF,LOW BIREFRINGENCE* Vesicles - Percent: 0 Leg : 65 Top/Bottom Interval(mm): 220/ 240 Describer: Robinson, P. Hole: 482C Top of Core Depth(m) : 161.50 Rock Type: IGNEOUS Core: 13 Sample Midpoint(m) : 161.73 Sect/Pc #: 1/PCE 3 ROCK = APHYRIC BASALT POOR THIN SECTION; Texture: APHYRIC,MEDIUM-GRAINED,INTERSERTAL-SUBOPHITIC; Where sampled: FLOW INTERIOR* Phenocrysts- PLAGIOCLASE ( <1%) Size(mm): 2-4 Morphology: SUBHEDRAL,LATHS FRESH* Groundmass - OLIVINE ( 2-3%) Size(mm): 0.1-0.2 Morphology: SUBHEDRAL COMPLETELY REPLACED BY SMEC; PLAGIOCLASE ( 50%) Size(mm): 0.2-1 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE (30-35%) Size(mm): 0.1-0.4 Morphology: ANHEDRAL FRESH,2VZ=40; MICROCRYST GROUNDMASS (10-15%) INTERSTITIAL MATERIAL,GLASSY,PARTLY REPLACED BY SMEC; MAGNETITE ( 3-5%) Size(mm): 0.02-0.04 Morphology: SUBHEDRAL Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + INTERSTITIAL ALTERED TO SMEC; CARBONATE Location: VESICLES VESICLES FILLED WITH SMEC + MINOR CARB* Vesicles - Size(mm): 0.5-2 Percent: 1-2 Filling: SMEC,CARB Shape: ROUND FILLED WITH SMEC + MINOR CARB* Leg : 65 Top/Bottom Interval(mm): 1050/1070 Describer: Robinson, P. Hole: 482C Top of Core Depth(m) : 161.50 Rock Type: IGNEOUS Core: 13 Sample Midpoint(m) : 165.56 Sect/Pc #: 3/PCE 7 ROCK = APHYRIC BASALT; Texture: APHYRIC,COARSE-GRAINED,INTERSERTAL-SUBOPHITIC; Where sampled: FLOW INTERIOR* Phenocrysts- PLAGIOCLASE ( <1%) Size(mm): 1-1.5 Morphology: SUBHEDRAL ZONED WITH GLASSY INCLUSIONS,FRESH* Groundmass - OLIVINE ( 2-3%) Size(mm): 0.2-0.4 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 50%) Size(mm): 0.2-1.2 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE (35-40%) Size(mm): 0.2-0.8 Morphology: ANHEDRAL 2VZ=40; MAGNETITE ( 5%) Size(mm): 0.1-0.4 Morphology: SUBHEDRAL MICROCRYST GROUNDMASS ( 5%) INTERSTITIAL MATERIAL,MOSTLY GLASSY MATERIAL WITH MINOR QUARTZ + APATITE,PARTLY REPLACED BY SMEC; QUARTZ MINOR,INTERSTITIAL; APATITE MINOR,INTERSTITIAL* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL,CPX Location: VESICLES OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC, SOME CPX MARGINALLY REPLACED BY SMEC* Vesicles - Size(mm): 0.1-0.2 Percent: <1 Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 370/ 390 Describer: Robinson, P. Hole: 482C Top of Core Depth(m) : 166.00 Rock Type: IGNEOUS Core: 14 Sample Midpoint(m) : 166.38 Sect/Pc #: 1/PCE 2C ROCK = APHYRIC BASALT; Texture: APHYRIC,COARSE-GRAINED,INTERSERTAL-SUBOPHITIC; Where sampled: FLOW INTERIOR* Groundmass - OLIVINE ( 2%) Size(mm): 0.2-0.5 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 55%) Size(mm): 0.2-1 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE ( 30%) Size(mm): 0.1-0.4 Morphology: ANHEDRAL FRESH; MAGNETITE ( 4%) Size(mm): 0.1-0.3 Morphology: SUBHEDRAL MICROCRYST GROUNDMASS ( 10%) INTERSTITIAL MATERIAL,MOSTLY MICROXLN MATERIAL WITH SOME QUARTZ AND APATITE,PARTLY REPLACED BY SMEC; QUARTZ SOME QUARTZ IN INTERSTITIAL MATERIAL; APATITE SOME APATITE IN INTERSTITIAL MATERIAL* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + SOME INTERSTITIAL MATERIAL ALTERED TO SMEC* Vesicles - Size(mm): 0.5 Percent: <1 Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 1220/1270 Describer: Robinson, P. Hole: 482C Top of Core Depth(m) : 166.00 Rock Type: IGNEOUS Core: 14 Sample Midpoint(m) : 171.75 Sect/Pc #: 4/PCE 5F ROCK = APHYRIC BASALT; Texture: APHYRIC,MEDIUM-GRAINED,INTERSERTAL-SUBOPHITIC; Where sampled: FLOW INTERIOR* Phenocrysts- PLAGIOCLASE ( <1%) Size(mm): 1-3 Morphology: SUBHEDRAL FRESH* Groundmass - OLIVINE ( 2-3%) Size(mm): 0.5 Morphology: SUBHEDRAL ALTERED TO SMEC; PLAGIOCLASE (50-55%) Size(mm): 0.3-1 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE (35-40%) Size(mm): 0.2-0.8 Morphology: ANHEDRAL FRESH,2VZ=40; MAGNETITE ( 2-3%) Size(mm): 0.02-0.04 Morphology: ANHEDRAL CRYPTOCRYSTALLINE ( 5%) INTERSTITIAL MATERIAL,MOSTLY CRYPTXLN MATERIAL WITH MINOR QUARTZ AND APATITE,PARTLY REPLACED BY SMEC; QUARTZ MINOR,INTERSTITIAL; APATITE MINOR,INTERSTITIAL* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + SOME INTERSTITIAL MATERIAL ALTERED TO SMEC* Vesicles - Size(mm): 0.2-0.5 Percent: <1 Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 1030/1050 Describer: Robinson, P. Hole: 482C Top of Core Depth(m) : 175.00 Rock Type: IGNEOUS Core: 15 Sample Midpoint(m) : 176.04 Sect/Pc #: 1/PCE 13 ROCK = PLAG-CPX-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,FINE-GRAINED, INTERGRANULAR-QUENCH* Phenocrysts- OLIVINE ( 1%) Size(mm): 0.3-0.5 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 3-5%) Size(mm): 0.5-1 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE ( 1-2%) Size(mm): 0.2-0.4 SUBOPHITIC CLOTS,2VZ=40* Groundmass - OLIVINE ( 1-3%) Size(mm): 0.1-0.2 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 50%) Size(mm): 0.1-0.3 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE (30-40%) Size(mm): 0.05-0.15 Morphology: ANHEDRAL-GRANULAR FRESH; MAGNETITE ( 3-4%) Size(mm): 0.02-0.05 Morphology: SUBHEDRAL CRYPTOCRYSTALLINE ( 5-15%) INTERSTITIAL MATERIAL,PARTLY ALTERED TO SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + SOME INTERSTITIAL MATERIAL ALTERED TO SMEC* Vesicles - Size(mm): 0.1-0.3 Percent: <1 Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 1190/1210 Describer: Robinson, P. Hole: 482C Top of Core Depth(m) : 175.00 Rock Type: IGNEOUS Core: 15 Sample Midpoint(m) : 177.70 Sect/Pc #: 2/PCE 14 ROCK = PLAG SPARSELY PHYRIC BASALT; Texture: SPARSELY PORPHYRITIC,MEDIUM-GRAINED, INTERGRANULAR-SUBOPHITIC; Where sampled: FLOW INTERIOR* Phenocrysts- PLAGIOCLASE ( 1-2%) Size(mm): 1-2 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE ( <1%) Size(mm): 0.8 Morphology: ANHEDRAL INTERGROWN WITH PLAG,2VZ=40* Groundmass - OLIVINE ( 2-3%) Size(mm): 0.4-0.6 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 50%) Size(mm): 0.1-0.5 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE (30-35%) Size(mm): 0.1-0.4 Morphology: ANHEDRAL FRESH,2VZ=40; MAGNETITE ( 2-3%) Size(mm): 0.05-0.2 Morphology: ANHEDRAL MICROCRYST GROUNDMASS ( 10%) INTERSTITIAL MATERIAL,PARTLY REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC; CARBONATE Location: VESICLES VESICLES FILLED WITH SMEC + MINOR CARB* Vesicles - Size(mm): 0.1-0.5 Percent: 1 Filling: SMEC,CARB Shape: ROUND FILLED WITH SMEC + MINOR CARB* |
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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