Mineralogy and geochemistry of volcanic ash at Japan Trench from DSDP Legs 87 and 57
| Cobertura |
MEDIAN LATITUDE: 38.278751 * MEDIAN LONGITUDE: 141.340692 * SOUTH-BOUND LATITUDE: 31.775000 * WEST-BOUND LONGITUDE: 133.854300 * NORTH-BOUND LATITUDE: 40.630000 * EAST-BOUND LONGITUDE: 143.951700 * DATE/TIME START: 1977-10-19T00:00:00 * DATE/TIME END: 1982-08-05T00:00:00 |
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| Data(s) |
12/11/1986
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| Resumo |
Volcanogenic sediments were obtained from Site 584, located on the midslope of the Japan Trench. Occurrences of volcanic ash in the diatomaceous mudstones increase within sediments dated 6-3 Ma. The frequency pattern and the sediment accumulation rate obtained at Site 584 are similar to those of Site 440 and to those of Sites 438 and 439, located on the upper slope basin. Explosive volcanism increased during the Pliocene and late Miocene in relation to the intrusion of Tertiary granites and uplift of the Tohoku Arc (northeastern Japan Arc). Hygromagmaphile element concentration shows that the glass does not belong to a unique series, and a comparison with Nankai Trough data distinguishes at least two different evolutionary lines. |
| Formato |
application/zip, 4 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.801675 doi:10.1594/PANGAEA.801675 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Fujioka, Kantaro; Cadet, Jean-Paul; Morin, Jean-Claude (1986): Volcanic ash at Site 584, Japan Trench. In: Kagami, H; Karig, DE; Coulbourn, WT; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 87, 681-694, doi:10.2973/dsdp.proc.87.117.1986 |
| Palavras-Chave | #<2 µm, >9 phi; 57-438A; 57-438B; 57-439; 57-440B; 87-582B; 87-583A; 87-584; 87-584A; Antimony; Ash layer; #2.5=2-3; #4=2-6; Ba; Barium; Caesium; Carb; Carbonates; Co; Cobalt; Color desc; Color description; Cs; Deep Sea Drilling Project; Diatoms; DRILL; Drilling/drill rig; DSDP; Epoch; Eu; Europium; Event; Fe2O3; Feldspar; Feldspar/(Feldspar + Quartz); Foram; Foraminifera; Fsp; Glauconite; Glomar Challenger; Glt; Hafnium; Heavy minerals; Hf; HM; ID in figure 9; ID in figures 7 and 8; Instrumental neutron activation analysis (INAA); Iron oxide, Fe2O3; La; La/Tb; Label; Lab no; Lanthanum; Lanthanum/Terbium ratio; Leg57; Leg87; Lithic; Lithic grains; Mica; Munsell Color System (1994); Na2O; Nannofossils; Nannos; Ni; Nickel; North Pacific; North Pacific/BASIN; North Pacific/TRENCH; ODP sample designation; Others; 87-584-89-3,147 = pumice; 87-584-95-1,20 =plant; Palagonite; Particle remains; Part rem; Plant deb; Plant debris; Py; Pyrite, FeS2; Quartz; Qz; Rad; Radiolarians; Ratio; Rb; Rubidium; Samp com; Sample, optional label/labor no; Sample code/label; Sample comment; Sand; Sb; Sc; Scandium; Silt; Size fraction < 0.002 mm, > 9 phi, clay; Smear slide analysis; Sodium oxide; Sponge; Ta; Tantalum; Tb; Tephra; Tephra/volcanic ash; Terbium; Th; Th/Ta; Thick; Thickness; Thorium; Thorium/Tantalum ratio; Total iron; U; Uranium; Volume percentages of the grain size of the materials in the volcanic ash layers; X-ray diffraction (XRD); Zirconium; Zr |
| Tipo |
Dataset |
