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Lelikov, Evgeny P; Emelyanova, T A; Sedin, V T; Arakelyants, M M; Lebedev, V A (2001): K-Ag age of volcanites from underwater rises of the Sea of Okhotsk and the Sea of Japan. PANGAEA, https://doi.org/10.1594/PANGAEA.779119, Supplement to: Lelikov, EP et al. (2001): New data on radioisotopic dating of volcanites from the Sea of Japan and the Sea of Okhotsk. Tikhookeanskaya Geologiya (Pacific Geology), 20(5), 118-122

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Abstract:
New K-Ar datings of Meso-Cenozoic volcanites from the Sea of Japan and the Sea of Okhotsk were obtained. They enabled to reason age of different volcanic complexes. Basalts from volcanic edifices of the Sea of Japan Basin were determined as Middle Miocene - Pliocene (13.1-4.5 Ma) in age, which correlates well with geological evolution of the Sea of Japan. New datings for basalts from the continental slope of the South Primorye (11.1 Ma) confirm their age being similar to volcanites from Neogene basalt plateaus of the South Primorye; they are very similar not only in age but also in mineral and chemical compositions. Datings for rocks from the andesite series of the Northern Yamato Rise (24.7, 21.5 Ma) show that they are coeval with volcanites of the trachyandesite complex; this allows to combine them into one Oligocene - Early Miocene complex. In the Sea of Okhotsk datings of volcanite samples from three complexes were obtained: Cretaceous, Paleogene, and Pliocene-Pleistocene. Cretaceous magmatic rocks make part of basements of large rises in the Sea of Okhotsk, and Paleogene and Pliocene - Pleistocene complexes illustrate stages of Cenozoic tectono-magmatic activation of the region.
Project(s):
Coverage:
Median Latitude: 46.394233 * Median Longitude: 140.972878 * South-bound Latitude: 38.503333 * West-bound Longitude: 129.828333 * North-bound Latitude: 56.200000 * East-bound Longitude: 152.160000
Event(s):
LV27-14 * Latitude: 48.488333 * Longitude: 151.035000 * Elevation Start: -3050.0 m * Elevation End: -2540.0 m * Location: Sea of Okhotsk * Method/Device: Dredge (DRG)
LV27-19 * Latitude: 49.663333 * Longitude: 152.160000 * Elevation Start: -1500.0 m * Elevation End: -1300.0 m * Location: Sea of Okhotsk * Method/Device: Dredge (DRG)
SOJ01-1147 * Latitude: 41.770000 * Longitude: 132.373333 * Elevation Start: -1800.0 m * Elevation End: -1580.0 m * Location: Sea of Japan * Method/Device: Dredge (DRG)
Size:
2 datasets

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