Geochemistry and isotopic composition of volcanic rocks of ODP Hole 128-794D
| Cobertura |
LATITUDE: 40.189400 * LONGITUDE: 138.232400 * DATE/TIME START: 1989-09-22T13:48:00 * DATE/TIME END: 1989-09-29T23:00:00 |
|---|---|
| Data(s) |
07/03/2012
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| Resumo |
The Yamato Basin basement in the Sea of Japan was drilled below the sediment pile during Legs 127 and 128. Two superposed volcanic complexes are distinguished. The upper complex consists of continental tholeiite sills dated around 20-18 Ma and attributed to the rifting stage of the backarc basin. The lower complex consists of backarc basin basalts probably intruded below the upper complex during the spreading stage. Trace-element compositions and Sr and Nd isotopic signatures may be explained by mixing of at least two end members with a very small addition of crustal and subducted sediment component. Thus, upwelling of mantle diapir occurred during the rifting stage. Contribution of the depleted mantle increased in the spreading stage. The Neogene magmatic history of the Japan Sea is reviewed in the light of the ODP new data. |
| Formato |
application/zip, 3 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.777218 doi:10.1594/PANGAEA.777218 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Pouclet, André; Bellon, Herve (1992): Geochemistry and isotopic composition of volcanic rocks from the Yamato Basin: Hole 794D, Sea of Japan. In: Tamaki, K; Suychiro, K; Allan, J; McWilliams, M; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 127/128(2), 779-789, doi:10.2973/odp.proc.sr.127128-2.197.1992 |
| Palavras-Chave | #128-794D; 143Nd/144Nd; 143Nd/144Nd e; 36Ar; 40Ar; 87Sr/86Sr; 87Sr/86Sr e; Age; AGE; Age, 40K/40Ar Potassium-Argon; Age, dated; Age, dated standard deviation; Age dated; Age std dev; Al2O3; Alteration; Aluminium oxide; Argon 36; Argon 40; Ba; Barium; Calcium oxide; CaO; Ce; Cerium; Chromium; Copper; Cr; Cu; DRILL; Drilling/drill rig; Dy; Dysprosium; e-Nd; epsilon-Neodymium; epsilon-Strontium; Er; Erbium; e-Sr; Eu; Europium; Fe2O3; FeO; Gadolinium; Gd; groundmass (?); Ho; Holmium; I Nd = 0.51186 ± 0.00003 (2 sigma); initial; Iron oxide, Fe2O3; Iron oxide, FeO; I Sr = 0.7045 ± 0.000 4 (2 sigma); Japan Sea; Joides Resolution; K2O; La; Lanthanum; Leg128; Lithologic unit/sequence; LOI; Loss on ignition; Lu; Lutetium; Magnesium oxide; Manganese oxide; Matrix; MgO; MnO; Na2O; Nb; Nd; Neodymium; Neodymium 143/Neodymium 144; Neodymium 143/Neodymium 144, error; Ni; Nickel; Niobium; Ocean Drilling Program; ODP; ODP sample designation; P2O5; Phosphorus oxide; Potassium oxide; Pr; Praseodymium; present-day; Rb; Rubidium; Samarium; Samp com; Sample code/label; Sample comment; Silicon dioxide; SiO2; Sm; Sodium oxide; Sr; Strontium; Strontium 87/Strontium 86; Strontium 87/Strontium 86, error; Tb; Terbium; Th; Thorium; Thulium; TiO2; Titanium oxide; Tm; U; Unit; Uranium; V; Vanadium; Y; Yb; Ytterbium; Yttrium; Zinc; Zirconium; Zn; Zr |
| Tipo |
Dataset |
