Leg : 65 Top/Bottom Interval(mm): 490/ 500 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 110.50 Rock Type: IGNEOUS Core: 3 Sample Midpoint(m) : 111.00 Sect/Pc #: 1/PCE 6 ROCK = PLAG-OL PHYRIC BASALT; Texture: PORPHYRITIC,MEDIUM-GRAINED,INTERGRANULAR- INTERSERTAL* Phenocrysts- OLIVINE ( 2%) Size(mm): 0.3-0.8 Morphology: EUHEDRAL PARTLY ALTERED TO SMEC; PLAGIOCLASE ( 10%) Size(mm): 0.2-2.5 Morphology: SUBHEDRAL FRESH,MOSTLY IN GLOMEROPHYRIC CLOTS* Groundmass - OLIVINE ( 1-2%) Size(mm): 0.05-0.2 Morphology: SUBHEDRAL PARTLY ALTERED TO SMEC,2V=90; PLAGIOCLASE ( 45%) Size(mm): 0.1-0.5 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE ( 35%) Size(mm): 0.1-0.2 Morphology: GRANULAR FRESH,2VZ=40; OPAQUE MINERALS ( 3%) Size(mm): 0.05-0.1 Morphology: SUBHEDRAL PROBABLY MAGN; MICROCRYST GROUNDMASS ( 10%) INTERSTITIAL MATERIAL,GLASSY,MOSTLY ALTERED TO SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + INTERSTITIAL MATERIAL PARTLY REPLACED BY SMEC + TRACES OF CARB; CARBONATE ( TR%) Location: INTERSTITIAL Replacing: OL OL + INTERSTITIAL MATERIAL PARTLY REPLACED BY SMEC + TRACES OF CARB* Vesicles - Size(mm): 0.3 Percent: <1 Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 1250/1260 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 110.50 Rock Type: IGNEOUS Core: 3 Sample Midpoint(m) : 111.76 Sect/Pc #: 1/PCE 13 ROCK = APHYRIC BASALT; Texture: APHYRIC,MEDIUM- TO COARSE-GRAINED,SUBOPHITIC* Groundmass - OLIVINE ( 2%) Size(mm): 0.1-0.3 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 45%) Size(mm): 0.1-1 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE ( 45%) Size(mm): 0.1-0.5 Morphology: ANHEDRAL FRESH,2VZ=40; OPAQUE MINERALS ( 2%) Size(mm): 0.05-0.2 PROBABLY MAGN; MICROCRYST GROUNDMASS ( 7%) INTERSTITIAL MATERIAL,GLASSY,ALTERED TO SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + INTERSTITIAL MATERIAL REPLACED BY SMEC + MINOR CARB; CARBONATE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + INTERSTITIAL MATERIAL REPLACED BY SMEC + MINOR CARB* Vesicles - Size(mm): 0.5-0.8 Percent: 1-2 Filling: SMEC,CARB Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 500/ 530 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 119.50 Rock Type: IGNEOUS Core: 4 Sample Midpoint(m) : 124.51 Sect/Pc #: 4/PCE 5 ROCK = APHYRIC BASALT; Texture: APHYRIC,COARSE-GRAINED,SUBOPHITIC-INTERSERTAL* Groundmass - OLIVINE ( 2-3%) Size(mm): 0.2-0.5 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 45%) Size(mm): 0.3-1.3 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE ( 45%) Size(mm): 0.3-0.7 Morphology: SUBHEDRAL-ANHEDRAL,PLATES FRESH,USUALLY IN SUBOPHITIC PLATES,OFTEN ZONED, 2VZ=40; OPAQUE MINERALS ( 3%) Size(mm): 0.05-0.1 Morphology: SUBHEDRAL PROBABLY MAGN; MICROCRYST GROUNDMASS ( 2-3%) INTERSTITIAL MATERIAL,GLASSY,REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL Replacing: OL OL + INTERSTITIAL MATERIAL REPLACED BY SMEC* Vesicles - Percent: 0 Leg : 65 Top/Bottom Interval(mm): 480/ 500 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 133.00 Rock Type: IGNEOUS Core: 7 Sample Midpoint(m) : 134.99 Sect/Pc #: 2/PCE 2C ROCK = APHYRIC BASALT; Texture: APHYRIC,COARSE-GRAINED,INTERGRANULAR-SUBOPHITIC* Groundmass - OLIVINE ( 3-5%) Size(mm): 0.1-0.3 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE (45-50%) Size(mm): 0.1-0.6 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE (40-45%) Size(mm): 0.02-0.04 Morphology: ANHEDRAL FRESH,2VZ=40; OPAQUE MINERALS ( 5%) Size(mm): 0.05-0.15 Morphology: SUBHEDRAL,SKELETAL PROBABLY MAGN; MICROCRYST GROUNDMASS ( 2-3%) INTERSTITIAL MATERIAL,REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VEINLET OL + MINOR INTERSTITIAL MATERIAL REPLACED BY GREENISH-BROWN SMEC,ONE VEINLET (0.3 MM WIDE) LINED WITH BROWN SMEC AND FILLED WITH CARB; CARBONATE Location: VEINLET ONE VEINLET (0.3 MM WIDE) LINED WITH BROWN SMEC AND FILLED WITH CARB* Vesicles - Percent: 0 Leg : 65 Top/Bottom Interval(mm): 80/ 90 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 137.50 Rock Type: TUFF Core: 8 Sample Midpoint(m) : 137.59 Sect/Pc #: 1/PCE 5A ROCK = PALAGONITE TUFF INCLUDES FORAMS + SPONGE SPICULES (1-2%) AND LITHIC FRAGMENTS (1%--MOSTLY MICROXLN BASALT) IN ADDITION TO WHAT IS LISTED BELOW; Texture: VITROCLASTIC,FINE- TO MEDIUM-GRAINED; Where sampled: OTHER HYALOCLASTITE OVERLYING MASSIVE COOLING UNIT* Phenocrysts- PLAGIOCLASE ( 2-3%) Size(mm): 0.3-0.8 Morphology: SUBHEDRAL-ANHEDRAL,SLIVERS SOME XTL SLIVERS,FRESH; CLINOPYROXENE ( TR%) Morphology: GRANULES IDENTITY QUESTIONABLE; COMBINATION ( 1-2%) Morphology: ANGULAR QUARTZ + HEAVY MINERAL GRAINS,SAND-SIZE* Groundmass - GLASS (50-75%) Size(mm): 0.2-0.6 Morphology: SHARDS,ANGULAR MOSTLY REPLACED BY BROWN AND GREEN SMEC OR ZEOLITE; OTHER ( 45%) CEMENT IS BROWN FIBROUS ZEOLITE (PHILLIPSITE?) WITH MINOR CALCITE* Alteration - SMECTITE Replacing: GLASS GLASS TO SMEC + ZEOLITE; ZEOLITE Replacing: GLASS GLASS TO SMEC + ZEOLITE,BROWN FIBROUS ZEOLITE (PHILLIPSITE?)* Vesicles - Percent: 0 Leg : 65 Top/Bottom Interval(mm): 450/ 460 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 137.50 Rock Type: IGNEOUS Core: 8 Sample Midpoint(m) : 137.96 Sect/Pc #: 1/PCE 6C ROCK = APHYRIC BASALT; Texture: APHYRIC,FINE- TO MEDIUM-GRAINED,SUBOPHITIC- INTERSERTAL* Groundmass - OLIVINE ( 5-8%) Size(mm): 0.1-0.3 Morphology: SUBHEDRAL PARTLY REPLACED BY SMEC; PLAGIOCLASE (45-50%) Size(mm): 0.2-0.8 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE (40-45%) Size(mm): 0.3-0.5 Morphology: ANHEDRAL FRESH,2VZ=40; OPAQUE MINERALS ( 3%) Size(mm): 0.05-0.1 Morphology: SUBHEDRAL PROBABLY MAGN; MICROCRYST GROUNDMASS ( 2-3%) INTERSTITIAL MATERIAL,REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES, Location: VEINLET INTERSTITIAL MATERIAL + SOME OL REPLACED BY SMEC, ONE HAIRLINE VEINLET FILLED WITH BROWNISH-GREEN SMEC; CARBONATE Location: VESICLES Vesicles - Size(mm): 0.5 Percent: <1 Filling: SMEC,CARB Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 1330/1370 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 137.50 Rock Type: IGNEOUS Core: 8 Sample Midpoint(m) : 140.35 Sect/Pc #: 2/PCE 9 ROCK = APHYRIC BASALT; Texture: APHYRIC,FINE- TO COARSE-GRAINED,OPHIMOTTLED- INTERSERTAL* Groundmass - OLIVINE (10-12%) Size(mm): 0.2-0.8 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE (40-45%) Size(mm): 0.3-1 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE (30-45%) Size(mm): 0.2-3 Morphology: GRANULAR-LARGE,IRREGULAR Morphology: PLATES IRREGULAR OPHITIC PLATES,FRESH,2VZ=45; OPAQUE MINERALS ( 2%) Size(mm): 0.05-0.1 Morphology: SUBHEDRAL PROBABLY MAGN* Alteration - SMECTITE Location: VESICLES Replacing: OL,PLAG,PYX OL ALTERED TO SMEC,SOME PATCHES SHOW REPLACEMENT OF PLAG + PYX BY SMEC + CHLORITE + CARB; CHLORITE Replacing: PLAG,PYX SOME PATCHES SHOW REPLACEMENT OF PLAG + PYX BY SMEC + CHLORITE + CARB; CARBONATE Replacing: PLAG,PYX SOME PATCHES SHOW REPLACEMENT OF PLAG + PYX BY SMEC + CHLORITE + CARB* Vesicles - Size(mm): 0.5 Percent: TR Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 330/ 350 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 146.50 Rock Type: IGNEOUS Core: 9 Sample Midpoint(m) : 146.84 Sect/Pc #: 1/PCE 4 ROCK = PLAG-OL-CPX MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 2-3%) Size(mm): 0.2-0.4 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 3-5%) Size(mm): 0.5 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE ( 1%) Size(mm): 0.2-0.4 Morphology: ANHEDRAL OFTEN IN SMALL CLOTS WITH PLAG,FRESH,2VZ=45* Groundmass - MESOSTASIS ( 90%) QUENCH MIXTURE OF PLAG NEEDLES + POORLY CRYSTALLIZED CPX WITH SHEAF-LIKE TEXTURE + GRANULAR OP.MINS; PLAGIOCLASE Morphology: NEEDLES QUENCH; CLINOPYROXENE Morphology: SHEAF-LIKE POORLY CRYSTALLIZED WITH SHEAF-LIKE TEXTURE; OPAQUE MINERALS Morphology: GRANULAR QUENCH* Alteration - SMECTITE Replacing: OL OL REPLACED BY SMEC + SOME CARB; CARBONATE Replacing: OL OL REPLACED BY SMEC + SOME CARB* Vesicles - Percent: 0 Leg : 65 Top/Bottom Interval(mm): 400/ 420 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 146.50 Rock Type: IGNEOUS Core: 9 Sample Midpoint(m) : 146.91 Sect/Pc #: 1/PCE 5 ROCK = APHYRIC BASALT; Texture: APHYRIC,MEDIUM-GRAINED,SUBOPHITIC-INTERGRANULAR* Groundmass - OLIVINE ( 5%) Size(mm): 0.1-0.3 Morphology: SUBHEDRAL-ANHEDRAL MOSTLY FRESH,SOME GRAINS RIMMED WITH SMEC,2V=90; PLAGIOCLASE (40-45%) Size(mm): 0.1-1 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE ( 45%) Size(mm): 0.1-1 Morphology: ANHEDRAL USUALLY SUBOPHITIC,FRESH,2VZ=45; OPAQUE MINERALS ( 2-3%) Morphology: GRAINS MINUTE GRAINS,PROBABLY MAGN; MICROCRYST GROUNDMASS ( 2-3%) INTERSTITIAL MATERIAL,GLASSY,PARTLY REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL Replacing: OL SOME OL + INTERSTITIAL MATERIAL ALTERED TO SMEC* Vesicles - Percent: 0 Leg : 65 Top/Bottom Interval(mm): 150/ 170 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 169.00 Rock Type: IGNEOUS Core: 12 Sample Midpoint(m) : 169.16 Sect/Pc #: 1/PCE 2 ROCK = PLAG-OL-CPX PHYRIC BASALT; Texture: PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 2-5%) Size(mm): 1-2 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE (10-12%) Size(mm): 1-3 Morphology: SUBHEDRAL,LATHS OFTEN IN CLUSTERS WITH CPX,FRESH; CLINOPYROXENE ( 3%) Size(mm): 0.2-0.6 Morphology: ANHEDRAL IN SUBOPHITIC CLOTS WITH PLAG,FRESH,2VZ=40* Groundmass - MESOSTASIS (80-85%) QUENCH MIXTURE OF SMALL PLAG LATHS + POORLY CRYSTALLIZED CPX + GRANULAR MAGN,MOSTLY FRESH; PLAGIOCLASE Morphology: LATHS SMALL,QUENCH; CLINOPYROXENE POORLY CRYSTALLIZED; MAGNETITE Morphology: GRANULAR QUENCH* Alteration - SMECTITE Location: GROUNDMASS, Replacing: OL Location: VESICLES OL + SOME GROUNDMASS MATERIAL REPLACED BY SMEC; CARBONATE Location: VESICLES Vesicles - Size(mm): 0.5-1 Percent: 1-2 Filling: SMEC,CARB Shape: ROUND SOME WITH SEGREGATION PATCHES,MOSTLY FILLED WITH SMEC + CARB* Leg : 65 Top/Bottom Interval(mm): 940/ 960 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 169.00 Rock Type: IGNEOUS Core: 12 Sample Midpoint(m) : 171.45 Sect/Pc #: 2/PCE 9 ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,FINE-GRAINED, INTERGRANULAR-INTERSERTAL* Phenocrysts- OLIVINE ( 1%) Size(mm): 0.6 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 2%) Size(mm): 0.5-1 Morphology: SUBHEDRAL FRESH* Groundmass - OLIVINE ( 1-2%) Size(mm): 0.1-0.2 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 50%) Size(mm): 0.2-0.5 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE ( 40%) Size(mm): 0.05-0.3 Morphology: GRANULAR USUALLY GRANULAR,FRESH,2VZ=40; OPAQUE MINERALS ( 1-2%) MINUTE XTLS OF MAGN; MICROCRYST GROUNDMASS ( 2-3%) INTERSTITIAL MATERIAL,REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + INTERSTITIAL MATERIAL REPLACED BY SMEC; CARBONATE Location: VESICLES Vesicles - Size(mm): 1-2 Percent: 2-3 Filling: SMEC,CARB Shape: ROUND- Shape: IRREGULAR Leg : 65 Top/Bottom Interval(mm): 30/ 50 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 174.50 Rock Type: IGNEOUS Core: 13 Sample Midpoint(m) : 174.54 Sect/Pc #: 1/PCE 1 ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 1-2%) Size(mm): 0.5-1 Morphology: SUBHEDRAL REPLACED BY SMEC + MINOR CARB; PLAGIOCLASE ( 5-7%) Size(mm): 1-4 Morphology: SUBHEDRAL FRESH,ZONED,SOME IN GLOMEROPHYRIC CLUSTERS; CLINOPYROXENE ( <1%) Size(mm): 0.2-0.4 Morphology: ANHEDRAL IN GLOMEROPHYRIC CLUSTERS WITH PLAG,FRESH,2VZ=40* Groundmass - COMBINATION ( 90%) QUENCH MIXTURE OF SMALL XTLS OF OL + PLAG + MAGN IN A MATRIX OF POORLY CRYSTALLIZED CPX WITH RADIATING SHEAVES,MINOR GLASS ALSO PRESENT,FRESH; OLIVINE QUENCH; PLAGIOCLASE QUENCH; MAGNETITE QUENCH; CLINOPYROXENE Morphology: RADIATING SHEAVES FORMS MATRIX; GLASS MINOR GLASS PRESENT* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED BY SMEC + MINOR CARB; CARBONATE Replacing: OL OL REPLACED BY SMEC + MINOR CARB* Vesicles - Size(mm): 0.2-0.6 Percent: 1 Filling: SMEC Shape: ROUND SOME WITH SEGREGATION PATCHES* Leg : 65 Top/Bottom Interval(mm): 1450/1470 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 174.50 Rock Type: IGNEOUS Core: 13 Sample Midpoint(m) : 175.96 Sect/Pc #: 1/PCE 4B ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,QUENCH; Where sampled: PILLOW INTERIOR* Phenocrysts- OLIVINE ( 1-2%) Size(mm): 1-4 Morphology: SUBHEDRAL PARTLY REPLACED BY SMEC,SOME FRESH; PLAGIOCLASE ( 3-5%) Size(mm): 1-3 Morphology: SUBHEDRAL FRESH,MOSTLY IN GLOMEROPHYRIC CLUSTERS; CLINOPYROXENE ( <1%) Size(mm): 1-4 Morphology: ANHEDRAL INTERGROWN WITH PLAG + OL,FRESH* Groundmass - OLIVINE ( 2%) Size(mm): 0.1-0.4 Morphology: SUBHEDRAL MOSTLY REPLACED BY SMEC; PLAGIOCLASE (15-20%) Size(mm): 0.3-1 Morphology: SKELETAL FRESH; CLINOPYROXENE (20-25%) Morphology: GRANULAR-RADIADING SHEAVES OPAQUE MINERALS ( 2-3%) Morphology: GRANULES MINUTE GRANULES,PROBABLY MAGN; GLASS (30-50%) INTERSTITIAL,FRESH* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED BY SMEC* Vesicles - Size(mm): 0.05-0.3 Percent: <1 Filling: SMEC Shape: ROUND- Shape: IRREGULAR Leg : 65 Top/Bottom Interval(mm): 1460/1480 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 174.50 Rock Type: IGNEOUS Core: 13 Sample Midpoint(m) : 177.47 Sect/Pc #: 2/PCE 14 ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 1%) Size(mm): 0.2-0.5 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 8-10%) Size(mm): 0.5-3 Morphology: SUBHEDRAL,LATHS FRESH,STRONGLY ZONED; CLINOPYROXENE ( <1%) Size(mm): 0.3 Morphology: ANHEDRAL INTERGROWN WITH PLAG IN GLOMEROPHYRIC CLOTS,FRESH, 2VZ=45* Groundmass - MESOSTASIS ( 90%) QUENCH MIXTURE COMPOSED MOSTLY OF POORLY CRYSTALLIZED CPX + ACICULAR PLAG NEEDLES + SMALL OL XTLS REPLACED BY SMEC + MINUTE OPAQUE GRANULES; CLINOPYROXENE POORLY CRYSTALLIZED; PLAGIOCLASE Morphology: ACICULAR OLIVINE SMALL XTLS REPLACED BY SMEC; OPAQUE MINERALS Morphology: GRANULES MINUTE GRANULES* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED BY SMEC* Vesicles - Size(mm): 1-2 Percent: 1 Filling: SMEC Shape: ROUND FILLED WITH BROWN SMEC* Leg : 65 Top/Bottom Interval(mm): 1350/1370 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 174.50 Rock Type: IGNEOUS Core: 13 Sample Midpoint(m) : 178.86 Sect/Pc #: 3/PCE 12 ROCK = PLAG-OL-CPX MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,MEDIUM-GRAINED, INTERGRANULAR-INTERSERTAL* Phenocrysts- OLIVINE ( 1%) Size(mm): 0.5 Morphology: SUBHEDRAL SERIATE TO GROUNDMASS GRAINS,MOSTLY REPLACED BY SMEC,SOME FRESH; PLAGIOCLASE ( 5%) Size(mm): 1-2 Morphology: SUBHEDRAL FRESH,ZONED; CLINOPYROXENE ( 1%) Size(mm): 0.5 Morphology: ANHEDRAL SERIATE TO GROUNDMASS GRAINS,INTERGROWN WITH PLAG, FRESH,2VZ=45* Groundmass - OLIVINE ( 3-4%) Size(mm): 0.2-0.5 Morphology: SUBHEDRAL MOSTLY REPLACED BY SMEC; PLAGIOCLASE (40-45%) Size(mm): 0.2-0.8 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE ( 35%) Size(mm): 0.1-0.3 Morphology: ANHEDRAL FRESH,2VZ=45; OPAQUE MINERALS ( 2-3%) Morphology: GRANULES,LATHS MINUTE GRANULES AND LATHS,IN INTERSTITIAL AREAS; MICROCRYST GROUNDMASS ( 10%) INTERSTITIAL MATERIAL,MOSTLY GLASSY,FRESH* Alteration - SMECTITE Replacing: OL OL PARTLY REPLACED BY SMEC; CARBONATE Location: VEINLET ONE HAIRLINE VEINLET FILLED WITH CARB* Vesicles - Percent: 0 Leg : 65 Top/Bottom Interval(mm): 460/ 480 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 180.00 Rock Type: IGNEOUS Core: 14 Sample Midpoint(m) : 181.97 Sect/Pc #: 2/PCE 3C ROCK = PLAG MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( <1%) Size(mm): 0.2-0.3 Morphology: SUBHEDRAL REPLACED BY SMEC + MINOR CARB; PLAGIOCLASE ( 3%) Size(mm): 0.2-3 Morphology: SUBHEDRAL,LATHS LARGEST GRAINS CORRODED,FRESH* Groundmass - PLAGIOCLASE ( 10%) Morphology: ACICULAR,LATHS QUENCH; OPAQUE MINERALS ( 1-2%) Morphology: GRANULAR QUENCH; MESOSTASIS ( 85%) Morphology: SHEAF-LIKE VERY POORLY CRYSTALLIZED MATRIX WITH SHEAF-LIKE TEXTURE* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED BY SMEC; CARBONATE Location: VESICLES Vesicles - Size(mm): 0.2-0.3 Filling: SMEC,CARB Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 850/ 870 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 194.00 Rock Type: IGNEOUS Core: 17 Sample Midpoint(m) : 194.86 Sect/Pc #: 1/PCE 10A ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 2%) Size(mm): 0.2-1 Morphology: SUBHEDRAL MOSTLY REPLACED BY SMEC; PLAGIOCLASE ( 4-5%) Size(mm): 0.5-1.5 Morphology: SKELETAL,LATHS STRONGLY ZONED,FRESH* Groundmass - PLAGIOCLASE (35-40%) Size(mm): 0.05-0.5 Morphology: ACICULAR,SKELETAL OFTEN SKELETAL,SOME SLIGHT REPLACEMENT BY SMEC; CLINOPYROXENE (45-50%) Size(mm): 0.05-0.2 Morphology: GRANULAR-SHEAF-LIKE POORLY CRYSTALLIZED,FRESH; OPAQUE MINERALS ( 5%) Size(mm): 0.005-0.05 Morphology: SQUARE-IRREGULAR GRANULES PROBABLY MAGN* Alteration - SMECTITE Location: GROUNDMASS, Replacing: OL Location: VESICLES OL + GROUNDMASS MATERIAL PARTLY REPLACED BY SMEC; CARBONATE Location: VESICLES Vesicles - Size(mm): 0.5 Percent: TR Filling: SMEC,CARB Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 70/ 90 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 194.00 Rock Type: IGNEOUS Core: 17 Sample Midpoint(m) : 197.08 Sect/Pc #: 3/PCE 1A ROCK = PLAG MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,MEDIUM-GRAINED, INTERSERTAL* Phenocrysts- OLIVINE ( <1%) Size(mm): 0.5-1.5 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 2%) Size(mm): 1-2 Morphology: SUBHEDRAL OFTEN CORRODED,FRESH* Groundmass - OLIVINE ( 4%) Size(mm): 0.2-0.5 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE (45-50%) Size(mm): 0.5-1 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE ( 30%) Size(mm): 0.2-0.6 Morphology: ANHEDRAL FRESH,2VZ=40; OPAQUE MINERALS ( 5%) Size(mm): 0.005-1 Morphology: SQUARE-LATH-SHAPED MAGN-ILMENITE; MICROCRYST GROUNDMASS (10-12%) INTERSTITIAL MATERIAL,MOSTLY GLASSY TO MICROXLN, PARTLY REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC* Vesicles - Size(mm): 0.5-1 Percent: <1 Filling: SMEC Shape: SUBROUND- Shape: IRREGULAR Leg : 65 Top/Bottom Interval(mm): 350/ 370 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 199.00 Rock Type: IGNEOUS Core: 18 Sample Midpoint(m) : 199.36 Sect/Pc #: 1/PCE 5A ROCK = PLAG MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,FINE-GRAINED, INTERGRANULAR-INTERSERTAL* Phenocrysts- OLIVINE ( <1%) Size(mm): 0.5-1 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 2%) Size(mm): 1-2 Morphology: SUBHEDRAL,LATHS FRESH* Groundmass - OLIVINE ( 1-2%) Size(mm): 0.2-0.3 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE (45-50%) Size(mm): 0.2-0.4 Morphology: ACICULAR FRESH; CLINOPYROXENE (40-45%) Size(mm): 0.1-0.3 Morphology: GRANULAR FRESH,OFTEN POORLY CRYSTALLIZED; OPAQUE MINERALS ( 5%) Size(mm): 0.005-0.1 Morphology: SQUARE-LATH-LIKE MAGN-ILMENITE* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED BY SMEC; CARBONATE Location: VESICLES Vesicles - Size(mm): 1-2 Percent: 3-5 Filling: SMEC,CARB Shape: SUBROUND Leg : 65 Top/Bottom Interval(mm): 450/ 480 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 199.00 Rock Type: IGNEOUS Core: 18 Sample Midpoint(m) : 202.47 Sect/Pc #: 3/PCE 6 ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,FINE-GRAINED,INTERSERTAL- INTERGRANULAR,SOMEWHAT VARIOLITIC* Phenocrysts- OLIVINE ( 1-2%) Size(mm): 0.5-1 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 2-3%) Size(mm): 1-2 Morphology: PRISMS,LATHS SERIATE WITH GROUNDMASS,SOME XTLS CORRODED AND MOST ZONED,FRESH* Groundmass - OLIVINE ( 1-2%) Size(mm): 0.3-0.5 Morphology: SUBHEDRAL,SKELETAL OFTEN SKELETAL,REPLACED BY SMEC + MINOR CARB; PLAGIOCLASE ( 45%) Size(mm): 0.05-0.5 Morphology: SUBHEDRAL,LATHS OFTEN IN CLOTS INTERGROWN WITH OL + CPX; CLINOPYROXENE ( 30%) Size(mm): 0.05-0.5 Morphology: GRANULAR-ACICULAR FRESH,2VZ=45; OPAQUE MINERALS ( 3-4%) Size(mm): 0.005-0.2 Morphology: GRANULAR PROBABLY MAGN; MICROCRYST GROUNDMASS ( 10%) INTERSTITIAL MATERIAL,GLASSY TO MICROXLN,PARTLY REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC* Vesicles - Size(mm): 1 Percent: 2-3 Filling: SMEC Shape: ROUND SOME SEGREGATION VESICLES* Leg : 65 Top/Bottom Interval(mm): 1230/1250 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 204.00 Rock Type: IGNEOUS Core: 19 Sample Midpoint(m) : 205.24 Sect/Pc #: 1/PCE 12B ROCK = PLAG MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,MEDIUM-GRAINED, INTERGRANULAR-INTERSERTAL* Phenocrysts- PLAGIOCLASE ( 2-3%) Size(mm): 1-2 Morphology: SUBHEDRAL OFTEN ZONED,FRESH* Groundmass - OLIVINE ( 2-3%) Size(mm): 0.1-0.3 Morphology: SUBHEDRAL REPLACED BY SMEC + CARB; PLAGIOCLASE (45-50%) Size(mm): 0.2-1 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE (40-45%) Size(mm): 0.1-0.5 Morphology: ANHEDRAL FRESH,2VZ=45; OPAQUE MINERALS ( 3-5%) Size(mm): 0.005-0.1 Morphology: SQUARE MAGN; MICROCRYST GROUNDMASS ( 5-7%) INTERSTITIAL MATERIAL,MOSTLY MICROXLN MATERIAL, PARTLY REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC + MINOR CARB; CARBONATE Location: INTERSTITIAL Replacing: OL OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC + MINOR CARB* Vesicles - Size(mm): 1-2 Percent: 1 Filling: SMEC Shape: ROUND- Shape: IRREGULAR Leg : 65 Top/Bottom Interval(mm): 1220/1240 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 204.00 Rock Type: IGNEOUS Core: 19 Sample Midpoint(m) : 206.73 Sect/Pc #: 2/PCE 6C ROCK = PLAG-OL PHYRIC BASALT; Texture: PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 2-3%) Size(mm): 0.3-0.6 Morphology: SUBHEDRAL REPLACED BY SMEC,OFTEN IN GLOMEROPHYRIC CLUSTERS WITH PLAG; PLAGIOCLASE (10-12%) Size(mm): 0.3-3.5 Morphology: EUHEDRAL-SUBHEDRAL FRESH; CLINOPYROXENE ( TR%) Size(mm): 0.4-0.8 Morphology: ANHEDRAL INTERGROWN WITH PLAG,FRESH* Groundmass - MESOSTASIS ( 85%) QUENCH MIXTURE OF ACICULAR PLAG + GRANULAR MAGN + POORLY CRYSTALLIZED CPX,FRESH; PLAGIOCLASE Morphology: ACICULAR QUENCH; MAGNETITE Morphology: GRANULAR QUENCH; CLINOPYROXENE POORLY CRYSTALLIZED* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED BY SMEC* Vesicles - Size(mm): 1 Percent: <1 Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 510/ 530 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 204.00 Rock Type: IGNEOUS Core: 19 Sample Midpoint(m) : 207.52 Sect/Pc #: 3/PCE 3A ROCK = APHYRIC BASALT; Texture: APHYRIC,MEDIUM- TO COARSE-GRAINED,OPHIMOTTLED* Groundmass - OLIVINE ( 3%) Size(mm): 0.5-1.5 Morphology: SUBHEDRAL REPLACED BY SMEC + CARB; PLAGIOCLASE (35-40%) Size(mm): 0.5-2 Morphology: SUBHEDRAL,LATHS IN GLOMEROPHYRIC CLOTS WITH CPX,FRESH,OFTEN ZONED; CLINOPYROXENE (20-25%) Size(mm): 0.2-1 Morphology: SUBHEDRAL-ANHEDRAL IN SUBOPHITIC CLOTS WITH PLAG,FRESH,2VZ=45; OPAQUE MINERALS ( 5%) Size(mm): 0.05-0.3 Morphology: LATHS MOSTLY LATHS,PROBABLY ILMENITE-MAGN,ALL IN INTERSTITIAL AREAS; MICROCRYST GROUNDMASS (25-30%) INTERSTITIAL MATERIAL,MICROXLN MATERIAL SURROUNDING CLOTS OF PLAG + CPX,PARTLY REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VEINLET OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC + CARB,ONE VEINLET (1 MM WIDE) FILLED WITH GREENISH- BROWN SMEC; CARBONATE Location: INTERSTITIAL Replacing: OL OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC + CARB* Vesicles - Percent: 0 Leg : 65 Top/Bottom Interval(mm): 1370/1390 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 208.50 Rock Type: IGNEOUS Core: 20 Sample Midpoint(m) : 211.38 Sect/Pc #: 2/PCE 10 ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,FINE-GRAINED,INTERSERTAL- INTERGRANULAR* Phenocrysts- OLIVINE ( 1-2%) Size(mm): 0.5-1 Morphology: EUHEDRAL-SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 2-3%) Size(mm): 1-1.5 Morphology: SUBHEDRAL STRONGLY ZONED,FRESH* Groundmass - OLIVINE ( 1-2%) Size(mm): 0.1-0.3 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE (45-50%) Size(mm): 0.2-1 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE (30-35%) Size(mm): 0.1-0.4 Morphology: GRANULAR FRESH,2VZ=45; OPAQUE MINERALS ( 3-4%) Size(mm): 0.005-0.1 Morphology: GRANULAR-LATH-SHAPED MAGN-ILMENITE; MICROCRYST GROUNDMASS (10-12%) INTERSTITIAL MATERIAL,DARK BROWN GLASSY TO MICROXLN MATERIAL,MINOR REPLACEMENT BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + MINOR INTERSTITIAL MATERIAL REPLACED BY SMEC* Vesicles - Size(mm): 0.5 Percent: TR Filling: SMEC Shape: ROUND SOME WITH SEGREGATION PATCHES* Leg : 65 Top/Bottom Interval(mm): 1000/1020 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 213.00 Rock Type: IGNEOUS Core: 21 Sample Midpoint(m) : 215.51 Sect/Pc #: 2/PCE 6 ROCK = PLAG-CPX-OL PHYRIC BASALT; Texture: PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 2%) Size(mm): 0.5-1 Morphology: EUHEDRAL REPLACED BY SMEC + CARB; PLAGIOCLASE ( 10%) Size(mm): 1-5 Morphology: SUBHEDRAL,PRISMS FRESH,OFTEN IN CLOTS WITH CPX; CLINOPYROXENE ( 2-3%) Size(mm): 0.2-1 Morphology: ANHEDRAL-ROUNDED FRESH,2VZ=45,SOMETIMES ZONED* Groundmass - MESOSTASIS ( 85%) QUENCH MIXTURE OF POORLY CRYSTALLIZED PLAG + RADIATING SHEAVES OF CPX + MINUTE GRANULES OF OP.MINS + GLASSY INTERSTITIAL MATERIAL,FRESH; PLAGIOCLASE POORLY CRYSTALLIZED; CLINOPYROXENE Morphology: RADIATING SHEAVES QUENCH; OPAQUE MINERALS Morphology: GRANULES MINUTE GRANULES* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED BY SMEC* Vesicles - Size(mm): 0.2-0.5 Percent: <1 Filling: SMEC Shape: ROUND SOME SEGREGATION VESICLES* Leg : 65 Top/Bottom Interval(mm): 1170/1190 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 217.50 Rock Type: IGNEOUS Core: 22 Sample Midpoint(m) : 220.18 Sect/Pc #: 2/PCE 16 ROCK = PLAG-OL-CPX PHYRIC BASALT; Texture: PORPHYRITIC,VERY FINE-GRAINED,INTERGRANULAR- INTERGRANULAR* Phenocrysts- OLIVINE ( 4%) Size(mm): 0.3-1.5 Morphology: EUHEDRAL-SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 10%) Size(mm): 0.3-3 Morphology: SUBHEDRAL FRESH,OFTEN IN GLOMEROCRYSTS; CLINOPYROXENE ( 3-4%) Size(mm): 0.4-2.6 Morphology: ANHEDRAL-ROUNDED OCCURS AS INDIVIDUAL ROUNDED XTLS AND IN GLOMEROCRYSTS WITH PLAG,FRESH,2VZ=45,OFTEN SECTOR ZONED* Groundmass - OLIVINE ( 2-3%) Size(mm): 0.1-0.2 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE (35-40%) Size(mm): 0.1-0.4 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE (30-35%) Size(mm): 0.1-0.3 Morphology: GRANULAR FRESH; OPAQUE MINERALS ( 3%) Size(mm): 0.005-0.05 Morphology: GRANULES PROBABLY MAGN; MICROCRYST GROUNDMASS ( 5%) INTERSTITIAL MATERIAL,GLASSY,PARTLY REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC* Vesicles - Size(mm): 0.5 Percent: TR Shape: ROUND SEGREGATION VESICLES* Leg : 65 Top/Bottom Interval(mm): 950/ 970 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 222.00 Rock Type: IGNEOUS Core: 23 Sample Midpoint(m) : 222.96 Sect/Pc #: 1/PCE 5 ROCK = PLAG-CPX-OL PHYRIC BASALT; Texture: PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 2-3%) Size(mm): 0.3-0.8 Morphology: EUHEDRAL-SUBHEDRAL ALTERED TO SMEC; PLAGIOCLASE ( 10%) Size(mm): 0.5-2 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE ( 4%) Size(mm): 0.5-1 Morphology: ANHEDRAL MOSTLY INTERGROWN WITH PLAG IN GLOMEROPHYRIC CLOTS,FRESH,2VZ=45,OFTEN SECTOR ZONED* Groundmass - MESOSTASIS (80-85%) QUENCH MIXTURE OF PLAG MICROLITES + RADIATING SHEAVES OF CPX + GRANULAR OP.MINS + A FEW GRAINS OF FRESH OL; PLAGIOCLASE MICROLITES,QUENCH; CLINOPYROXENE Morphology: RADIATING SHEAVES QUENCH; OPAQUE MINERALS Morphology: GRANULAR QUENCH; OLIVINE Morphology: GRAINS A FEW GRAINS OF FRESH OL* Alteration - SMECTITE Location: VESICLES Replacing: OL OL PARTLY REPLACED BY SMEC* Vesicles - Size(mm): 0.3-0.5 Percent: 1-2 Filling: SMEC Shape: ROUND SOME SEGREGATION VESICLES* Leg : 65 Top/Bottom Interval(mm): 290/ 310 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 222.00 Rock Type: IGNEOUS Core: 23 Sample Midpoint(m) : 225.30 Sect/Pc #: 3/PCE 3 ROCK = PLAG-CPX-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,QUENCH; Where sampled: FLOW INTERIOR* Phenocrysts- OLIVINE ( 2%) Size(mm): 0.2-0.4 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 5%) Size(mm): 0.3-3 Morphology: SUBHEDRAL FRESH,USUALLY ZONED; CLINOPYROXENE ( 3%) Size(mm): 0.3-0.8 Morphology: SUBHEDRAL OFTEN IN GLOMEROPHYRIC CLOTS WITH PLAG,FRESH, 2VZ=45,OFTEN ZONED,SOME XTLS CORRODED* Groundmass - MESOSTASIS ( 90%) QUENCH MIXTURE OF PLAG MICROLITES + SMALL OL XTLS + RADIATING SHEAVES OF CPX + GRANULAR OP.MINS; PLAGIOCLASE MICROLITES,QUENCH; OLIVINE SMALL; CLINOPYROXENE Morphology: RADIATING SHEAVES QUENCH; OPAQUE MINERALS Morphology: GRANULAR QUENCH* Alteration - SMECTITE Location: VESICLES Replacing: OL Vesicles - Size(mm): 0.05-0.5 Percent: 1 Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 690/ 710 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 222.00 Rock Type: IGNEOUS Core: 23 Sample Midpoint(m) : 227.20 Sect/Pc #: 4/PCE 9B ROCK = PLAG-CPX-OL PHYRIC BASALT; Texture: PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 2%) Size(mm): 0.2-0.4 Morphology: EUHEDRAL REPLACED BY SMEC + CARB; PLAGIOCLASE ( 7-8%) Size(mm): 0.5-2 Morphology: SUBHEDRAL,PRISMS HIGHLY ZONED,FRESH; CLINOPYROXENE ( 3-4%) Size(mm): 0.5-1 Morphology: ANHEDRAL USUALLY INTERGROWN WITH PLAG IN GLOMEROPHYRIC CLOTS,FRESH,2VZ=45,USUALLY ZONED* Groundmass - MESOSTASIS ( 85%) POORLY CRYSTALLIZED MIXTURE OF PLAG MICROLITES + RADIATING SHEAVES OF CPX + MINUTE GRANULES OF OP.MINS + SOME INTERSTITIAL GLASS,FRESH; PLAGIOCLASE MICROLITES; CLINOPYROXENE Morphology: RADIATING SHEAVES OPAQUE MINERALS Morphology: GRANULES MINUTE GRANULES; GLASS SOME INTERSTITIAL GLASS* Alteration - SMECTITE Location: VESICLES Replacing: OL Vesicles - Size(mm): 0.5-0.8 Percent: TR Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 110/ 140 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 226.50 Rock Type: IGNEOUS Core: 24 Sample Midpoint(m) : 228.13 Sect/Pc #: 2/PCE 1B ROCK = PLAG-CPX-OL PHYRIC BASALT; Texture: PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 2-3%) Size(mm): 0.4-1 Morphology: SUBHEDRAL REPLACED BY SMEC + CARB; PLAGIOCLASE ( 7%) Size(mm): 0.3-2.5 Morphology: SUBHEDRAL OFTEN IN CLUSTERS,FRESH,STRONGLY ZONED; CLINOPYROXENE ( 3-4%) Size(mm): 0.4-0.6 Morphology: ANHEDRAL-ROUNDED USUALLY IN GLOMEROPHYRIC CLOTS WITH PLAG,FRESH, 2VZ=45* Groundmass - MESOSTASIS ( 85%) QUENCH MIXTURE OF SKELETAL PLAG MICROLITES + RADIATING SHEAVES OF CPX + GRANULAR OP.MINS + MINOR GLASS,FRESH; PLAGIOCLASE Morphology: SKELETAL SKELETAL MICROLITES; CLINOPYROXENE Morphology: RADIATING SHEAVES QUENCH; OPAQUE MINERALS Morphology: GRANULAR QUENCH; GLASS MINOR* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED BY SMEC + CARB; CARBONATE Location: VESICLES Replacing: OL OL REPLACED BY SMEC + CARB* Vesicles - Size(mm): 0.5-1 Percent: 1-2 Filling: SMEC,CARB SOME WITH SEGREGATION PATCHES* Leg : 65 Top/Bottom Interval(mm): 80/ 100 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 231.00 Rock Type: IGNEOUS Core: 25 Sample Midpoint(m) : 234.09 Sect/Pc #: 3/PCE 2 ROCK = PLAG-CPX-OL PHYRIC BASALT; Texture: PORPHYRITIC,FINE-GRAINED,INTERGRANULAR- INTERSERTAL* Phenocrysts- OLIVINE ( 2%) Size(mm): 0.4-0.8 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 8-10%) Size(mm): 0.4-1 SERIATE WITH GROUNDMASS,FRESH,SOME CLOTS WITH CPX; CLINOPYROXENE ( 3%) Size(mm): 0.4-1 Morphology: ANHEDRAL FRESH,OFTEN IN CLOTS WITH PLAG,2VZ=45* Groundmass - OLIVINE ( 1-2%) Size(mm): 0.1-0.3 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 40%) Size(mm): 0.2-0.4 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE ( 30%) Size(mm): 0.05-0.3 Morphology: GRANULAR-RADIATING SHEAVES FRESH,2VZ=45; OPAQUE MINERALS ( 2-3%) Size(mm): 0.005-0.1 Morphology: GRANULAR-LATH-SHAPED MAGN-ILMENITE; MICROCRYST GROUNDMASS ( 10%) INTERSTITIAL MATERIAL,PARTLY REPLACED BY SMEC* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED BY SMEC* Vesicles - Size(mm): 0.5 Percent: <1 Filling: SMEC Shape: ROUND FILLED WITH BROWN SMEC* Leg : 65 Top/Bottom Interval(mm): 960/1000 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 235.50 Rock Type: IGNEOUS Core: 26 Sample Midpoint(m) : 237.98 Sect/Pc #: 2/PCE 14 ROCK = PLAG-CPX-OL PHYRIC BASALT; Texture: PORPHYRITIC,FINE-GRAINED,INTERSERTAL* Phenocrysts- OLIVINE ( 2%) Size(mm): 0.4-0.6 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 8-10%) Size(mm): 0.5-2 SERIATE WITH GROUNDMASS,OFTEN IN GLOMEROPHYRIC CLOTS WITH CPX,STRONGLY ZONED,FRESH; CLINOPYROXENE ( 3-4%) Size(mm): 0.3-0.8 Morphology: SUBHEDRAL OCCURS MOSTLY IN GLOMEROPHYRIC CLOTS WITH PLAG BUT THERE ARE SOME INDIVIDUAL CORRODED XTLS,FRESH, 2VZ=45* Groundmass - OLIVINE ( 2%) Size(mm): 0.1-0.2 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 40%) Size(mm): 0.1-0.5 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE ( 20%) Size(mm): 0.1-0.3 Morphology: GRANULAR-RADIATING SHEAVES FRESH,2VZ=45; OPAQUE MINERALS ( 2-3%) Size(mm): 0.005-0.1 Morphology: GRANULAR-LATH-SHAPED MAGN-ILMENITE; MICROCRYST GROUNDMASS ( 20%) INTERSTITIAL MATERIAL,PARTLY REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC* Vesicles - Size(mm): 0.3-0.5 Percent: 1-2 Filling: SMEC Shape: ROUND FILLED WITH BROWN SMEC,A FEW SEGREGATION VESICLES* Leg : 65 Top/Bottom Interval(mm): 1450/1470 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 235.50 Rock Type: IGNEOUS Core: 26 Sample Midpoint(m) : 238.46 Sect/Pc #: 2/PCE 17C ROCK = PLAG-CPX-OL PHYRIC BASALT; Texture: PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 1-2%) Size(mm): 0.3-0.8 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 8-10%) Size(mm): 0.3-1.5 Morphology: SUBHEDRAL,LATHS OFTEN INTERGROWN WITH CPX,FRESH; CLINOPYROXENE ( 2%) Size(mm): 0.2-0.8 Morphology: SUBHEDRAL INTERGROWN WITH PLAG,FRESH,2VZ=45* Groundmass - MESOSTASIS (85-90%) QUENCH MIXTURE OF PLAG MICROLITES + SHEAVES OF CPX + GRANULAR OP.MINS + ABUNDANT DARK BROWN GLASS, FRESH; PLAGIOCLASE MICROLITES; CLINOPYROXENE Morphology: SHEAVES QUENCH; OPAQUE MINERALS Morphology: GRANULAR QUENCH; GLASS ABUNDANT DARK BROWN GLASS* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED BY SMEC* Vesicles - Size(mm): 0.4 Percent: <1 Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 850/ 870 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 240.00 Rock Type: IGNEOUS Core: 27 Sample Midpoint(m) : 243.86 Sect/Pc #: 3/PCE 1H ROCK = APHYRIC BASALT; Texture: APHYRIC,MEDIUM- TO COARSE-GRAINED,INTERGRANULAR- INTERSERTAL* Groundmass - OLIVINE ( 2-3%) Size(mm): 0.2-0.6 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE (40-45%) Size(mm): 0.2-1.5 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE (35-40%) Size(mm): 0.2-2 Morphology: PLATES OFTEN IN SUBOPHITIC PLATES,FRESH,2VZ=45; OPAQUE MINERALS ( 3-4%) Size(mm): 0.05-0.7 Morphology: SQUARE XTLS-LATHS MAGN-ILMENITE; MICROCRYST GROUNDMASS ( 15%) INTERSTITIAL MATERIAL,GLASSY TO DEVITRIFIED,PARTLY REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC* Vesicles - Size(mm): TO 0.5 Percent: <1 Filling: SMEC Shape: ROUND FILLED WITH BROWN SMEC* Leg : 65 Top/Bottom Interval(mm): 660/ 680 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 244.50 Rock Type: IGNEOUS Core: 28 Sample Midpoint(m) : 245.17 Sect/Pc #: 1/PCE 4B ROCK = APHYRIC BASALT; Texture: APHYRIC,MEDIUM-GRAINED, INTERSERTAL* Groundmass - OLIVINE ( 2-3%) Size(mm): 0.5-1 Morphology: SUBHEDRAL PARTLY REPLACED BY SMEC,SOME FRESH REMNANTS; PLAGIOCLASE (35-40%) Size(mm): 0.2-1.5 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE (30-35%) Size(mm): 0.2-0.8 Morphology: ANHEDRAL INTERGROWN WITH PLAG,FRESH,2VZ=45; OPAQUE MINERALS ( 3-4%) Size(mm): 0.05-0.5 Morphology: SQUARE XTLS-LATHS MAGN-ILMENITE,OCCURS IN INTERSTITIAL PATCHES; MICROCRYST GROUNDMASS ( 20%) INTERSTITIAL MATERIAL,GLASSY TO MICROXLN,IN LARGE IRREGULAR PATCHES,PARTLY REPLACED BY SMEC,MOSTLY FRESH* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES OL + INTERSTITIAL MATERIAL PARTLY REPLACED BY SMEC* Vesicles - Size(mm): TO 0.5 Percent: <1 Filling: SMEC Shape: ROUND- Shape: IRREGULAR FILLED WITH BROWN SMEC* Leg : 65 Top/Bottom Interval(mm): 310/ 340 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 253.50 Rock Type: IGNEOUS Core: 30 Sample Midpoint(m) : 253.83 Sect/Pc #: 1/PCE 4A ROCK = PLAG-OL-CPX PHYRIC BASALT; Texture: PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 3%) Size(mm): 0.5-4 Morphology: SUBHEDRAL OFTEN CORRODED,REPLACED BY SMEC + MINOR CARB; PLAGIOCLASE ( 8%) Size(mm): 0.3-2 Morphology: EUHEDRAL-SUBHEDRAL FRESH,SOMETIMES IN GLOMEROPHYRIC CLUSTERS; CLINOPYROXENE ( 1-2%) Size(mm): 0.1-0.5 INTERGROWN WITH PLAG,FRESH,2VZ=45* Groundmass - MESOSTASIS (85-90%) QUENCH MIXTURE OF PLAG MICROLITES + SHEAVES OF CPX + GRANULAR OP.MINS + INTERSTITIAL GLASS; PLAGIOCLASE MICROLITES; CLINOPYROXENE Morphology: SHEAVES QUENCH; OPAQUE MINERALS Morphology: GRANULAR QUENCH; GLASS INTERSTITIAL* Alteration - SMECTITE Location: VESICLES Replacing: OL OL ALTERED TO SMEC + MINOR CARB; CARBONATE Replacing: OL OL ALTERED TO SMEC + MINOR CARB* Vesicles - Size(mm): TO 0.4 Percent: 1 Filling: SMEC Shape: ROUND FILLED WITH BROWN SMEC* Leg : 65 Top/Bottom Interval(mm): 860/ 890 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 258.00 Rock Type: IGNEOUS Core: 31 Sample Midpoint(m) : 260.38 Sect/Pc #: 2/PCE 7A ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 3-5%) Size(mm): 0.3-2 Morphology: EUHEDRAL-SUBHEDRAL ALTERED TO SMEC + CARB; PLAGIOCLASE ( 5-7%) Size(mm): 0.2-3 Morphology: SUBHEDRAL FRESH* Groundmass - MESOSTASIS ( 90%) QUENCH GROUNDMASS--MOSTLY BROWN GLASS WITH MINOR PLAG MICROLITES + GRANULAR OP.MINS + POORLY CRYSTALLIZED CPX,FRESH; GLASS GROUNDMASS IS MOSTLY BROWN GLASS; PLAGIOCLASE MINOR,MICROLITES; OPAQUE MINERALS Morphology: GRANULAR MINOR; CLINOPYROXENE MINOR,POORLY CRYSTALLIZED* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED + SMEC + CARB; CARBONATE Replacing: OL OL REPLACED BY SMEC + CARB* Vesicles - Size(mm): TO 0.6 Percent: <1 Filling: SMEC Shape: ROUND FILLED WITH BROWN SMEC* Leg : 65 Top/Bottom Interval(mm): 1350/1370 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 262.50 Rock Type: IGNEOUS Core: 32 Sample Midpoint(m) : 263.86 Sect/Pc #: 1/PCE 5E ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,FINE-GRAINED,INTERSERTAL* Phenocrysts- OLIVINE ( 2-3%) Size(mm): 0.3-1.1 Morphology: SUBHEDRAL REPLACED BY SMEC + CARB; PLAGIOCLASE ( 7-8%) Size(mm): 0.5-2 Morphology: SKELETAL SERIATE WITH GROUNDMASS,FRESH* Groundmass - OLIVINE ( 1-2%) Size(mm): 0.05-0.2 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE (30-35%) Size(mm): 0.1-0.5 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE (30-35%) Size(mm): 0.05-0.4 Morphology: ANHEDRAL FRESH,2VZ=45; OPAQUE MINERALS ( 3-4%) Size(mm): 0.05-0.3 Morphology: SQUARE XTLS-LATHS MAGN-ILMENITE; MICROCRYST GROUNDMASS (15-20%) INTERSTITIAL MATERIAL,DEVITRIFIED GLASS,MOSTLY FRESH; GLASS INTERSTITIAL,DEVITRIFIED* Alteration - SMECTITE Location: VESICLES Replacing: OL OL REPLACED BY SMEC + CARB; CARBONATE Replacing: OL OL REPLACED BY SMEC + CARB* Vesicles - Size(mm): TO 1 Percent: <1 Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 630/ 650 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 262.50 Rock Type: IGNEOUS Core: 32 Sample Midpoint(m) : 266.14 Sect/Pc #: 3/PCE 7 ROCK = PLAG-CPX-OL PHYRIC BASALT; Texture: PORPHYRITIC,QUENCH* Phenocrysts- OLIVINE ( 2%) Size(mm): 0.2-1 Morphology: SUBHEDRAL REPLACED BY SMEC; PLAGIOCLASE ( 5-7%) Size(mm): 0.3-1.5 Morphology: SUBHEDRAL,LATHS FRESH; CLINOPYROXENE ( 3%) Size(mm): 0.2-0.4 Morphology: ANHEDRAL INTERGROWN IN CLOTS WITH PLAG,FRESH,2VZ=45* Groundmass - MESOSTASIS (85-90%) MOSTLY DEVITRIFIED GLASS WITH MINOR PLAG MICROLITES + GRANULAR OP.MINS; GLASS GROUNDMASS IS MOSTLY DEVITRIFIED GLASS; PLAGIOCLASE MINOR,MICROLITES; OPAQUE MINERALS Morphology: GRANULAR MINOR* Alteration - SMECTITE Location: VESICLES Replacing: OL OL ALTERED TO SMEC* Vesicles - Size(mm): 0.4-0.8 Percent: 2 Filling: SMEC Shape: ROUND Leg : 65 Top/Bottom Interval(mm): 10/ 30 Describer: Robinson, P. Hole: 483B Top of Core Depth(m) : 146.50 Rock Type: IGNEOUS Core: B 1 Sample Midpoint(m) : 146.52 Sect/Pc #: /PCE 1 ROCK = PLAG-OL MODERATELY PHYRIC BASALT; Texture: MODERATELY PORPHYRITIC,MEDIUM-GRAINED, INTERSERTAL-SUBOPHITIC; Where sampled: PILLOW INTERIOR OR FLOW INTERIOR* Phenocrysts- OLIVINE ( 2%) Size(mm): 0.5-1 Morphology: SUBHEDRAL PARTLY REPLACED BY SMEC; PLAGIOCLASE ( 5%) Size(mm): 1-10 Morphology: SUBHEDRAL OFTEN CORRODED,STRONGLY ZONED,FRESH; CLINOPYROXENE ( <1%) Size(mm): 0.2-0.5 FRESH* Groundmass - OLIVINE ( 3%) Size(mm): 0.1-0.5 Morphology: SUBHEDRAL MOSTLY REPLACED BY SMEC; PLAGIOCLASE (35-40%) Size(mm): 0.3-1 Morphology: SUBHEDRAL FRESH; CLINOPYROXENE (30-35%) Size(mm): 0.2-0.5 Morphology: ANHEDRAL OFTEN SUBOPHITIC,FRESH,2VZ=45; OPAQUE MINERALS ( 3%) Morphology: SUBHEDRAL,GRAINS MINUTE SUBHEDRAL GRAINS IN INTERSTITIAL PATCHES; MICROCRYST GROUNDMASS (15-20%) INTERSTITIAL MATERIAL,MOSTLY GLASSY,PARTLY REPLACED BY SMEC* Alteration - SMECTITE Location: INTERSTITIAL, Replacing: OL Location: VESICLES SOME OL + INTERSTITIAL MATERIAL REPLACED BY SMEC; CARBONATE Location: VESICLES Vesicles - Size(mm): 0.2-0.4 Percent: 1 Filling: SMEC,CARB Shape: ROUND |
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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