Unknown
PANGAEA
In:
Supplement to: Miki, Takashi; Takahashi, Ryohei (1980): Heavy-mineral analysis of sediments from the Deep Sea Drilling Project transect of the Japan Trench, Legs 56 and 57. In: Scientific Party, Initial Reports of the Deep Sea Drilling Project, 56/57 (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 56-57, 1019-1025, https://doi.org/10.2973/dsdp.proc.5657.137.1980
Publication Date:
2023-06-27
Description:
Heavy-mineral assemblages in the cored sediments from DSDP Legs 56 and 57 show a distinct change of source rocks, from older sedimentary rocks during the Oligocene to volcanic rocks during the Miocene through Pleistocene. The former might have been supplied by the "Oyashio ancient landmass," and the latter from the volcanic areas in Hokkaido and northeast Honshu. This indicates a shift of the Japanese Islands toward the continent.
Keywords:
56-434; 56-435; 57-438; 57-438A; 57-438B; 57-439; 57-440B; 57-441A; Augite; Deep Sea Drilling Project; Diopside; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Epidote; Event label; Garnet; Glauconite; Glomar Challenger; Heavy minerals, opaque; Hornblende, brown; Hornblende, green; Hypersthene; Latitude of event; Leg56; Leg57; Longitude of event; Mica; North Pacific/BASIN; North Pacific/TRENCH; Sample code/label; Sphene; Tourmaline; Wet sieving; Zircon
Type:
Dataset
Format:
text/tab-separated-values, 826 data points
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