Pouclet, André; Bellon, Herve (2012): Geochemistry and isotopic composition of volcanic rocks of ODP Hole 128-794D [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.777218, Supplement to: Pouclet, A; Bellon, H (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, https://doi.org/10.2973/odp.proc.sr.127128-2.197.1992
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Abstract:
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.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 40.189400 * Longitude: 138.232400
Date/Time Start: 1989-09-22T13:48:00 * Date/Time End: 1989-09-29T23:00:00
Event(s):
128-794D * Latitude: 40.189400 * Longitude: 138.232400 * Date/Time Start: 1989-09-22T13:48:00 * Date/Time End: 1989-09-29T23:00:00 * Elevation: -2818.0 m * Penetration: 733.5 m * Recovery: 34.85 m * Location: Japan Sea * Campaign: Leg128 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 20 cores; 160.5 m cored; 0 m drilled; 21.7 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
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Datasets listed in this publication series
- Pouclet, A; Bellon, H (1992): (Table 4) Age determination and argon isotope ratios of igneous rocks of ODP Hole 128-794D. https://doi.org/10.1594/PANGAEA.777215
- Pouclet, A; Bellon, H (1992): (Table 2) Major and trace element chemical composition of igneous rocks of ODP Hole 128-794D. https://doi.org/10.1594/PANGAEA.777213
- Pouclet, A; Bellon, H (1992): (Table 5) Sr and Nd isotope ratios of igneous rocks of ODP Hole 128-794D. https://doi.org/10.1594/PANGAEA.777217