Leg : 62 Top/Bottom Interval(mm): 310/ 330 Describer: Vallier, T. Hole: 465A Top of Core Depth(m) : 409.50 Rock Type: UNIDENTIFIED Core: 40 Sample Midpoint(m) : 412.82 Sect/Pc #: 3/PCE 1C ROCK = TRACHYTE VOLCANIC BRECCIA; Texture: MODERATELY PORPHYRITIC,HYALOPILITIC-PILOTAXITIC; Where sampled: FLOW INTERIOR* Phenocrysts- OLIVINE ( 0.2%) Size(mm): 0.1-0.2 Morphology: EUHEDRAL RARE,PSEUDOMORPHED BY CLAY; PLAGIOCLASE ( 8.0%) Size(mm): 0.25-0.75 Morphology: EUHEDRAL PARTLY ALTERED TO CLAY MINS* Groundmass - OLIVINE ( 0%) PLAGIOCLASE ( 15.4%) MOSTLY MICROLITES; CLINOPYROXENE ( 0%) OPAQUE MINERALS ( 3.0%) INCLUDES MAGN + ILMENITE; GLASS ( 73.4%) REPLACED BY CLAY MINS,PERCENTAGES OBTAINED BY POINT COUNT (500 POINTS)* Alteration - CLAY MINERALS Location: GROUNDMASS Replacing: GLASS,FEL EXTENSIVE,SOME FELDSPARS* Leg : 62 Top/Bottom Interval(mm): 300/ 320 Describer: Windom, K. Hole: 465A Top of Core Depth(m) : 419.00 Rock Type: UNIDENTIFIED Core: 41 Sample Midpoint(m) : 419.31 Sect/Pc #: 1/PCE 3 ROCK = TRACHYTE VOLCANIC BRECCIA; Texture: HYALOPILITIC* Phenocrysts- OLIVINE ( 0%) PLAGIOCLASE ( 8.0%) Size(mm): 0.04-0.2 Morphology: LATHS MICROPHENOS,LARGER XTLS ARE ZONED; CLINOPYROXENE ( 0%) SPINEL ( 0%) Groundmass - PLAGIOCLASE ( 12.3%) Morphology: LATHS WISPY LATHS,MICROLITES; MAGNETITE ( 1.2%) GLASS SEE CLAY.MIN,PERCENTAGES OBTAINED BY POINT COUNT* Alteration - CARBONATE ( 0.2%) Location: VEINS CLAY MINERALS ( 76.5%) Replacing: GLASS Vesicles - Percent: 1.8 Filling: CLAY.MIN Shape: IRREGULAR Leg : 62 Top/Bottom Interval(mm): 750/ 780 Describer: Windom, K. Hole: 465A Top of Core Depth(m) : 419.00 Rock Type: UNIDENTIFIED Core: 41 Sample Midpoint(m) : 419.77 Sect/Pc #: 1/PCE 7A ROCK = TRACHYTE VOLCANIC BRECCIA; Texture: MODERATELY PORPHYRITIC,HYALOPILITIC; Where sampled: CLAST IN BRECCIA* Phenocrysts- OLIVINE ( 0%) PLAGIOCLASE ( 6.2%) Size(mm): 0.1-1.0 Morphology: LATHS ONE XTL IS SECTOR ZONED; CLINOPYROXENE ( 0%) SPINEL ( 0%) Groundmass - OLIVINE ( 0%) PLAGIOCLASE ( 26.8%) MICROLITES; CLINOPYROXENE ( 0%) MAGNETITE ( 1.2%) ILMENITE ( 0%) GLASS SEE CLAY.MIN; ORTHOPYROXENE ( 0%) QUARTZ ( 0%) ALKALI FELDSPAR ( 0%) PERCENTAGES OBTAINED BY POINT COUNT* Alteration - CARBONATE ( 0.1%) CLAY MINERALS ( 65.7%) Replacing: GLASS Leg : 62 Top/Bottom Interval(mm): 190/ 210 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 419.00 Rock Type: IGNEOUS Core: 41 Sample Midpoint(m) : 420.70 Sect/Pc #: 2/PCE 2D ROCK = TRACHYTE; Texture: APHYRIC,PILOTAXITIC; Where sampled: FLOW INTERIOR* Phenocrysts- PLAGIOCLASE MICROPHENOS* Groundmass - PLAGIOCLASE 2 GENERATIONS OF PLAG; OPAQUE MINERALS ( >1%) INCLUDES MAGN + ILMENITE* Alteration - CARBONATE Location: VEINS PRESENT IN VEINS; CLAY MINERALS Replacing: GLASS MOSTLY ALTERED GLASS* Leg : 62 Top/Bottom Interval(mm): 820/ 840 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 419.00 Rock Type: IGNEOUS Core: 41 Sample Midpoint(m) : 421.33 Sect/Pc #: 2/PCE 11A ROCK = TRACHYTE; Texture: HYALOPILITIC; Where sampled: NEXT TO GLASSY MARGIN* Phenocrysts- PLAGIOCLASE PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >1%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS MOSTLY ALTERED GLASS* Leg : 62 Top/Bottom Interval(mm): 1370/1390 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 419.00 Rock Type: IGNEOUS Core: 41 Sample Midpoint(m) : 421.88 Sect/Pc #: 2/PCE 17A ROCK = TRACHYTE; Texture: HYALOPILITIC; Where sampled: NEXT TO GLASSY MARGIN* Phenocrysts- PLAGIOCLASE BOTH PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >1%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS MOSTLY ALTERED GLASS* Leg : 62 Top/Bottom Interval(mm): 1270/1290 Describer: Windom, K. Hole: 465A Top of Core Depth(m) : 428.50 Rock Type: IGNEOUS Core: 42 Sample Midpoint(m) : 429.78 Sect/Pc #: 1/PCE 8A ROCK = TRACHYTE; Texture: APHYRIC,HYALOPILITIC,VESICULAR* Phenocrysts- OLIVINE ( 0%) PLAGIOCLASE ( 3.8%) Size(mm): 0.06-0.4 Morphology: LATHS,RHOMBS CLINOPYROXENE ( 0%) SPINEL ( 0%) Groundmass - OLIVINE ( 0%) PLAGIOCLASE ( 27.5%) CLINOPYROXENE ( 0%) MAGNETITE ( 0.7%) ILMENITE ( 0%) GLASS SEE CLAY.MIN; ORTHOPYROXENE ( 0%) QUARTZ ( 0%) ALKALI FELDSPAR ( 0%) PERCENTAGES OBTAINED BY POINT COUNT* Alteration - CARBONATE ( 2.4%) Location: VESICLES CLAY MINERALS ( 57.4%) Replacing: GLASS Vesicles - Size(mm): 0.1-1 Percent: 8.6 Filling: CALCITE-EMPTY Shape: IRREGULAR CALCITE FILLING SOME BUT MOST ARE VOID* Leg : 62 Top/Bottom Interval(mm): 900/ 920 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 428.50 Rock Type: IGNEOUS Core: 42 Sample Midpoint(m) : 430.91 Sect/Pc #: 2/PCE 8B ROCK = TRACHYTE; Texture: PILOTAXITIC,VESICULAR; Where sampled: NEXT TO GLASSY MARGIN* Phenocrysts- PLAGIOCLASE BOTH PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >1%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS MOSTLY ALTERED GLASS* Leg : 62 Top/Bottom Interval(mm): 840/ 860 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 428.50 Rock Type: IGNEOUS Core: 42 Sample Midpoint(m) : 432.35 Sect/Pc #: 3/PCE 8 ROCK = TRACHYTE; Texture: APHYRIC,PILOTAXITIC,VESICULAR; Where sampled: NEXT TO GLASSY MARGIN* Phenocrysts- PLAGIOCLASE MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >1%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS MOSTLY ALTERED GLASS* Leg : 62 Top/Bottom Interval(mm): 640/ 660 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 438.00 Rock Type: IGNEOUS Core: 43 Sample Midpoint(m) : 438.65 Sect/Pc #: 1/PCE 11 ROCK = TRACHYTE; Texture: APHYRIC,PILOTAXITIC,VESICULAR* Phenocrysts- PLAGIOCLASE ONLY MICROPHENOS* Groundmass - PLAGIOCLASE MOSTLY FRESH; OPAQUE MINERALS ( >1%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS Leg : 62 Top/Bottom Interval(mm): 910/ 930 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 438.00 Rock Type: IGNEOUS Core: 43 Sample Midpoint(m) : 438.92 Sect/Pc #: 1/PCE 15 ROCK = TRACHYTE; Texture: HYALOPILITIC,VESICULAR; Where sampled: NEXT TO GLASSY MARGIN* Phenocrysts- PLAGIOCLASE PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >2%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS Leg : 62 Top/Bottom Interval(mm): 1050/1070 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 438.00 Rock Type: IGNEOUS Core: 43 Sample Midpoint(m) : 439.06 Sect/Pc #: 1/PCE 17 ROCK = TRACHYTE; Texture: HYALOPILITIC,VESICULAR; Where sampled: NEXT TO GLASSY MARGIN* Phenocrysts- PLAGIOCLASE BOTH PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >1-2%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS Leg : 62 Top/Bottom Interval(mm): 650/ 680 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 438.00 Rock Type: IGNEOUS Core: 43 Sample Midpoint(m) : 440.17 Sect/Pc #: 2/PCE 7A ROCK = TRACHYTE; Texture: APHYRIC,HYALOPILITIC,VESICULAR* Phenocrysts- PLAGIOCLASE ONLY MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >1%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS Leg : 62 Top/Bottom Interval(mm): 1070/1090 Describer: Windom, K. Hole: 465A Top of Core Depth(m) : 438.00 Rock Type: IGNEOUS Core: 43 Sample Midpoint(m) : 440.58 Sect/Pc #: 2/PCE 10 ROCK = TRACHYTE; Texture: APHYRIC,VESICULAR,HYALOPILITIC,PILOTAXITIC* Phenocrysts- OLIVINE ( 0%) PLAGIOCLASE ( 4.1%) Size(mm): 8-0.5 Morphology: LATHS MICROPHENOS; CLINOPYROXENE ( 0%) SPINEL ( 0%) Groundmass - OLIVINE ( 0%) PLAGIOCLASE ( 31.1%) MICROLITES; CLINOPYROXENE ( 0%) MAGNETITE ( 1.0%) GLASS SEE CLAY.MIN; ORTHOPYROXENE ( 0%) QUARTZ ( 0%) ALKALI FELDSPAR ( 0%) PERCENTAGES OBTAINED BY POINT COUNT* Alteration - CLAY MINERALS ( 61.1%) Replacing: GLASS CLAY MINERALS ( 0.2%) GREEN,QUESTIONABLE AS TO WHAT IS BEING REPLACED* Vesicles - Percent: 2.5 Leg : 62 Top/Bottom Interval(mm): 780/ 800 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 447.50 Rock Type: IGNEOUS Core: 44 Sample Midpoint(m) : 448.29 Sect/Pc #: 1/PCE 10 ROCK = TRACHYTE; Texture: PILOTAXITIC,VESICULAR* Phenocrysts- PLAGIOCLASE BOTH PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE RATHER FRESH; OPAQUE MINERALS ( >1%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS Leg : 62 Top/Bottom Interval(mm): 370/ 390 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 447.50 Rock Type: IGNEOUS Core: 44 Sample Midpoint(m) : 449.38 Sect/Pc #: 2/PCE 5 ROCK = TRACHYTE; Texture: APHYRIC,HYALOPILITIC,VESICULAR* Phenocrysts- PLAGIOCLASE ONLY MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >1%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS,PLAG Leg : 62 Top/Bottom Interval(mm): 990/1010 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 457.00 Rock Type: IGNEOUS Core: 45 Sample Midpoint(m) : 458.00 Sect/Pc #: 1/PCE 7A ROCK = TRACHYTE; Texture: APHYRIC,HYALOPILITIC,VESICULAR* Phenocrysts- PLAGIOCLASE ONLY MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( <1%) INCLUDES MAGN + ILMENITE* Alteration - CARBONATE Replacing: PLAG CLAY MINERALS Replacing: GLASS Leg : 62 Top/Bottom Interval(mm): 1230/ 0 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 457.00 Rock Type: IGNEOUS Core: 45 Sample Midpoint(m) : 458.23 Sect/Pc #: 1/PCE 8B ROCK = TRACHYTE; Texture: PILOTAXITIC,VESICULAR* Phenocrysts- PLAGIOCLASE BOTH PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE MOSTLY FRESH; OPAQUE MINERALS ( >2%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS,PLAG Leg : 62 Top/Bottom Interval(mm): 60/ 0 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 457.00 Rock Type: IGNEOUS Core: 45 Sample Midpoint(m) : 458.56 Sect/Pc #: 2/PCE 1 ROCK = TRACHYTE; Texture: APHYRIC,HYALOPILITIC,VESICULAR* Phenocrysts- PLAGIOCLASE ONLY MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >2%) INCLUDES MAGN + ILMENITE* Alteration - CARBONATE LARGE XTLS; CLAY MINERALS Replacing: GLASS,PLAG Leg : 62 Top/Bottom Interval(mm): 1140/1160 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 457.00 Rock Type: IGNEOUS Core: 45 Sample Midpoint(m) : 459.65 Sect/Pc #: 2/PCE 15B ROCK = TRACHYTE; Texture: HYALOPILITIC,VESICULAR* Phenocrysts- PLAGIOCLASE BOTH PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE MOSTLY FRESH; OPAQUE MINERALS ( >1%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS,PLAG Leg : 62 Top/Bottom Interval(mm): 1310/1330 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 457.00 Rock Type: IGNEOUS Core: 45 Sample Midpoint(m) : 462.82 Sect/Pc #: 4/PCE 15 ROCK = TRACHYTE; Texture: PILOTAXITIC,VESICULAR* Phenocrysts- PLAGIOCLASE BOTH PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >2%) INCLUDES MAGN + ILMENITE* Alteration - CARBONATE Location: VEINS IN VEINS; CLAY MINERALS Replacing: GLASS,PLAG Leg : 62 Top/Bottom Interval(mm): 370/ 390 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 466.50 Rock Type: IGNEOUS Core: 46 Sample Midpoint(m) : 466.88 Sect/Pc #: 1/PCE 6C ROCK = TRACHYTE; Texture: PILOTAXITIC,VESICULAR* Phenocrysts- PLAGIOCLASE BOTH PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >1-2%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS,PLAG Leg : 62 Top/Bottom Interval(mm): 160/ 180 Describer: Seifert, K. Hole: 465A Top of Core Depth(m) : 466.50 Rock Type: IGNEOUS Core: 46 Sample Midpoint(m) : 469.67 Sect/Pc #: 3/PCE 2 ROCK = TRACHYTE; Texture: HYALOPILITIC,VESICULAR* Phenocrysts- PLAGIOCLASE BOTH PHENOS + MICROPHENOS* Groundmass - PLAGIOCLASE PARTLY FRESH; OPAQUE MINERALS ( >1%) INCLUDES MAGN + ILMENITE* Alteration - CLAY MINERALS Replacing: GLASS,PLAG |
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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