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Yudonosawa Andesite

• Volcanic rocks
• Pleistocene - Holocene

• Lithofacies: Olivine-bearing hornblende hypersthene augite andesite

• Lower limit: Unconformity (Osawa Pyroclastic Flow Deposit, Onagi Welded Tuff)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Yudono creek - Osawa creek, Nikko city, Tochigi pref.

• Kawata (1955) Nantaizan, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 43p. (in Japanese with English abstract 7p.)