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Yunotake Rhyolite

• Volcanic rocks
• Volcanic rocks at the post-caldera stage of Sunagohara caldera
• Pleistocene (1.23, 0.59, 0.31 Ma, FT; 0.5, 0.21 Ma, K-Ar)
• Intruded in: Lacustrine deposit of upper Sunagohara Formation

• Lithofacies: Biotite hornblende rhyolite

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

• Distribution: Mount Yunotake, Sunagohara, Yanaizu city, Kawanuma county, Fukushima pref.

• Yamamoto and Komazawa (2004) Geology of the Miyashita District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 71p. (in Japanese with English abstract 5p.)