Leg : 69 Top/Bottom Interval(mm): 510/ 530 Describer: Pertsev, N. Hole: 504A Top of Core Depth(m) : 265.00 Rock Type: IGNEOUS Core: 6 Sample Midpoint(m) : 265.52 Sect/Pc #: 1/PCE 11 ROCK = PLAG-CPX-OL MOD MICROPHYRIC BASALT; Texture: MOD MICROPHYRIC,OPHITIC; Where sampled: FLOW INTERIOR* Phenocrysts- OLIVINE ( 1%) Size(mm): TO .5 Morphology: EUHEDRAL PLAGIOCLASE ( 4%) Size(mm): .5-1.5 Morphology: EUHEDRAL,SUBHEDRAL,LATHS, Morphology: GLOMEROCRYSTS CORE APPROX COMP AN73, RIM APPROX COMP AN67; CLINOPYROXENE ( 2%) Size(mm): .5-1 Morphology: SUBHEDRAL GLOMEROCRYSTS Groundmass - OLIVINE ( 5%) Size(mm): .1-.3 Morphology: ANHEDRAL PLAGIOCLASE ( 38%) Size(mm): .1-.7 Morphology: MICROLITES CLINOPYROXENE ( 45%) Size(mm): .1-.5 Morphology: RADIATED AGGREGATES+GRAINS MAGNETITE ( 5%) Size(mm): .1-.3 Morphology: SUBHEDRAL,SKELETAL Alteration - CARBONATE ( <.5%) Location: VEINS,OL Replacing: OL Location: PSEUDOMORPHS CLAY MINERALS ( 6%) Location: VEINS Replacing: OL OLIVE BROWN DARK SMECTITE* Vesicles - Size(mm): TO .2 Percent: 1 Filling: SMECTITE Shape: ROUND Leg : 69 Top/Bottom Interval(mm): 570/ 590 Describer: Pertsev, N. Hole: 504A Top of Core Depth(m) : 265.00 Rock Type: IGNEOUS Core: 6 Sample Midpoint(m) : 265.58 Sect/Pc #: 1/PCE 12 ROCK = PLAG-OL-CPX MOD MICROPHYRIC BASALT; Texture: MOD MICROPHYRIC,OPHITIC; Where sampled: FLOW INTERIOR* Phenocrysts- OLIVINE ( 1%) Size(mm): .2-.5 Morphology: EUHEDRAL PLAGIOCLASE ( 4%) Size(mm): .5-2 Morphology: EUHEDRAL,SUBHEDRAL CLINOPYROXENE ( 1%) Size(mm): .5-1 Morphology: SUBHEDRAL,ANHEDRAL Groundmass - OLIVINE ( 4%) Size(mm): .1-.2 Morphology: SUBHEDRAL,ANHEDRAL PLAGIOCLASE ( 40%) Size(mm): .1-.7 Morphology: MICROLITES CLINOPYROXENE ( 45%) Size(mm): .1-.5 Morphology: RADIATED AGGREGATES+GRAINS MAGNETITE ( 5%) Size(mm): .1-.3 Morphology: SUBHEDRAL,SKELETAL Alteration - CLAY MINERALS ( 5%) Replacing: OL OLIVE BROWN SMECTITE* Leg : 69 Top/Bottom Interval(mm): 940/ 960 Describer: Pertsev, N. Hole: 504A Top of Core Depth(m) : 265.00 Rock Type: IGNEOUS Core: 6 Sample Midpoint(m) : 267.45 Sect/Pc #: 2/PCE 40 ROCK = PLAG-CPX-OL MICROPHYRIC BASALT; Texture: MICROPHYRIC,OPHITIC; Where sampled: FLOW INTERIOR* Phenocrysts- OLIVINE ( 1%) Size(mm): .2-.5 Morphology: EUHEDRAL PLAGIOCLASE ( 15%) Size(mm): .3-2 Morphology: EUHEDRAL,SUBHEDRAL CLINOPYROXENE ( 5%) Size(mm): .3-1 Morphology: SUBHEDRAL,ANHEDRAL Groundmass - OLIVINE ( 5%) Size(mm): .05-.15 Morphology: ANHEDRAL PLAGIOCLASE ( 25%) Size(mm): .05-.5 Morphology: MICROLITES CLINOPYROXENE ( 43%) Size(mm): .05-.3 Morphology: RADIATED AGGREGATES MAGNETITE ( 5%) Size(mm): .05-.1 Morphology: ANHEDRAL Alteration - CLAY MINERALS ( 7%) Location: VESICLES Replacing: OL OLIVE BROWN SMECTITE* Vesicles - Size(mm): TO 2 Percent: 1 Filling: SMECTITE Shape: ROUND Leg : 69 Top/Bottom Interval(mm): 130/ 170 Describer: damson, A.C. Hole: 504A Top of Core Depth(m) : 265.00 Rock Type: IGNEOUS Core: 6 Sample Midpoint(m) : 268.15 Sect/Pc #: 3/PCE 48 ROCK = PLAG-OL-CPX MOD PHYRIC BASALT; Texture: MOD PHYRIC,HOLOXTLLINE,SUBOPHITIC,VARIOLITIC SUBOPHITIC TEXTURE BETWEEN CPX AND PLAG; Where sampled: FLOW INTERIOR* Phenocrysts- OLIVINE Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL PSEUDOMORPHS; PLAGIOCLASE Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL PLAGIOCLASE Size(mm): 1-3 Morphology: SUBHEDRAL GLOMEROCRYSTS(1-3MM)NOT COMMON(3 ON SLIDE),WITH AN68 COMPOSITION; CLINOPYROXENE Size(mm): .3-1 Morphology: ANHEDRAL Groundmass - OLIVINE ( 1-5%) Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL PERCENT IS FOR TOTAL OL; PLAGIOCLASE (20-40%) Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP AN60-80,OFTEN ZONED(CORES AN78,RIMS AN65),MORE SODIC ON EXTERIORS,INTERIOR HAS ROUNDED EDGES; CLINOPYROXENE Size(mm): .1-.3 Morphology: ANHEDRAL CLINOPYROXENE ( 5-10%) Size(mm): .03-.1 Morphology: ANHEDRAL PERCENT IS FOR TOTAL CPX; SPHERULITIC MESOSTASIS (20-40%) MAY BE CPX(YELLOW INTERFERENCE COLORS IN SOME AREAS AROUND EDGES); TITANOMAGNETITE ( 1-5%) Size(mm): .01-.03 Morphology: SUBHEDRAL ASSOCIATED WITH THE MESOSTASIS* Alteration - GOETHITE Location: VESICLES+ Location: CRACKS ID UNCERTAIN FOR GOETHITE; SMECTITE Location: VESICLES+ Replacing: OL Location: CRACKS SEVERAL IRREGULAR PATCHES OF SMECTITE SHOW STRONG IRON STAINING IN THEIR CORES-CHANGING FROM DARK GREEN TO YELLOW TO ORANGE AND THEN RUST FROM WEATHERED BASALT INTO THE CORE-MAY BE PATHS FOR HYDROTHERMAL ALTERATION,SIMILAR ZONING IN SMALL VEINS,OR REVERSED* Vesicles - Size(mm): .1-.3 Percent: .5-1 Filling: SMECTITE Shape: ROUND Leg : 69 Top/Bottom Interval(mm): 610/ 620 Describer: Pertsev, N. Hole: 504A Top of Core Depth(m) : 265.00 Rock Type: IGNEOUS Core: 6 Sample Midpoint(m) : 268.62 Sect/Pc #: 3/PCE 54 ROCK = PLAG-OL-CPX MOD PHYRIC BASALT THERE IS OXIDATION ZONALITY(ALONG A CRACK)- THE CRACK IS FILLED WITH BRIGHT RED-BROWN CLAY MINERAL CONTAMINATED IRON OXIDES, NEXT ZONE CONTAINS ALMOST BLACK(VERY DARK GREEN)CLAY FILLINGS OF VESICLES AND OL PSEUDOMORPHS, THE LAST PART OF THE ROCK IN THE SECTION CONTAINS USUAL OLIVE GREEN FILLINGS OF VESICLES AND OL PSEUDOMORPHS; Texture: MOD PHYRIC,VARIOLITIC; Where sampled: FLOW INTERIOR* Phenocrysts- OLIVINE Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL,ANHEDRAL PLAGIOCLASE Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL PLAGIOCLASE Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL CLINOPYROXENE Size(mm): .3-1 Morphology: ANHEDRAL Groundmass - OLIVINE Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL,ANHEDRAL OLIVINE ( 1-5%) Size(mm): .03-.1 Morphology: EUHEDRAL,SUBHEDRAL,ANHEDRAL PERCENT IS FOR TOTAL OL IN SECTION; PLAGIOCLASE Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL PLAGIOCLASE (20-40%) Size(mm): .03-.1 Morphology: EUHEDRAL,SUBHEDRAL PERCENT IS FOR TOTAL PLAG IN SECTION; CLINOPYROXENE Size(mm): .1-.3 Morphology: ANHEDRAL CLINOPYROXENE ( 5-10%) Size(mm): .03-.1 Morphology: ANHEDRAL PERCENT IS FOR TOTAL CPX IN SECTION; SPHERULITIC MESOSTASIS (20-40%) TITANOMAGNETITE ( 1-5%) Alteration - SMECTITE Location: VESICLES Replacing: OL Vesicles - Percent: .5-1 Filling: SMECTITE Shape: ROUND Leg : 69 Top/Bottom Interval(mm): 750/ 770 Describer: Pertsev, N. Hole: 504A Top of Core Depth(m) : 273.00 Rock Type: IGNEOUS Core: 7 Sample Midpoint(m) : 273.76 Sect/Pc #: 1/PCE 67 ROCK = PLAG-CPX MOD PHYRIC BASALT; Texture: MOD PHYRIC,OPHITIC,VARIOLITIC; Where sampled: FLOW INTERIOR* Phenocrysts- PLAGIOCLASE Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL PLAGIOCLASE Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL CLINOPYROXENE Size(mm): .3-1 Morphology: SUBHEDRAL,ANHEDRAL Groundmass - OLIVINE Size(mm): .1-.3 Morphology: SUBHEDRAL,ANHEDRAL PERCENT IS FOR TOTAL OL; OLIVINE ( 1-5%) Size(mm): .03-.1 Morphology: SUBHEDRAL,ANHEDRAL PLAGIOCLASE (20-40%) Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL PERCENT IS FOR TOTAL PLAG IN SECTION; CLINOPYROXENE (20-40%) Size(mm): .1-.3 Morphology: SUBHEDRAL,ANHEDRAL PERCENT IS FOR TOTAL CPX IN SECTION; SPHERULITIC MESOSTASIS (10-20%) TITANOMAGNETITE Size(mm): .1-.3 TITANOMAGNETITE ( 1-5%) Size(mm): .03-.1 PERCENT IS FOR TOTAL TITANO-MAGN* Alteration - SMECTITE Replacing: OL Leg : 69 Top/Bottom Interval(mm): 1410/1450 Describer: Pertsev, N. Hole: 504A Top of Core Depth(m) : 273.00 Rock Type: IGNEOUS Core: 7 Sample Midpoint(m) : 274.43 Sect/Pc #: 1/PCE 76 ROCK = PLAG-OL-CPX SPARSELY PHYRIC BASALT; Texture: PHYRIC,VARIOLITIC; Where sampled: PILLOW RIM* Phenocrysts- OLIVINE ( 1-5%) Size(mm): 1-3 Morphology: EUHEDRAL PLAGIOCLASE Size(mm): 1-3 Morphology: EUHEDRAL PLAGIOCLASE ( 5-10%) Size(mm): .3-1 Morphology: EUHEDRAL PERCENT IS FOR TOTAL PLAG; CLINOPYROXENE Size(mm): 1-3 Morphology: SUBHEDRAL CLINOPYROXENE ( 1-5%) Size(mm): .3-1 Morphology: SUBHEDRAL PERCENT IS FOR TOTAL CPX* Groundmass - SPHERULITIC MESOSTASIS ( 80%) Alteration - SMECTITE Location: VESICLES Replacing: OL LIGHT OLIVE BROWN* Vesicles - Size(mm): .3-1 Percent: 1-5 Filling: SMECTITE Shape: ROUND Leg : 69 Top/Bottom Interval(mm): 280/ 300 Describer: Pertsev, N. Hole: 504A Top of Core Depth(m) : 273.00 Rock Type: IGNEOUS Core: 7 Sample Midpoint(m) : 274.79 Sect/Pc #: 2/PCE 79 ROCK = PLAG-OL-CPX PHYRIC BASALT; Texture: PHYRIC; Where sampled: PILLOW INTERIOR* Phenocrysts- OLIVINE Size(mm): 1-3 Morphology: EUHEDRAL OLIVINE ( 1-5%) Size(mm): .3-1 Morphology: EUHEDRAL PERCENT IS FOR TOTAL OL; PLAGIOCLASE Size(mm): 3-10 Morphology: EUHEDRAL,SUBHEDRAL PLAGIOCLASE Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL PLAGIOCLASE (10-20%) Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL PERCENT IS FOR TOTAL PLAG; CLINOPYROXENE Size(mm): 1-3 Morphology: ANHEDRAL CLINOPYROXENE ( 1-5%) Size(mm): .3-1 Morphology: ANHEDRAL PERCENT IS FOR TOTAL CPX* Groundmass - SPHERULITIC MESOSTASIS ( 60%) TITANOMAGNETITE ( 1-5%) Size(mm): .1-.3 Alteration - CELADONITE Location: VESICLES Replacing: OL GREEN* Vesicles - Size(mm): 1-3 Filling: CELADONITE Shape: ROUND Size(mm): .3-1 Percent: 1-5 Filling: CELADONITE Shape: ROUND PERCENT IS FOR TOTAL VESICLES* |
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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