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Koto Rhyolites Mimura and Kawata, 1970

Invalid synonym: Koto cauldron

• Volcanic rocks
• Cretaceous
• Intruded by: Hira Granite
• Intruded in: Ryozensan Formation

• Sedimentary facies: Pyroclastic flow deposit
• Lithofacies: Rhyolite, Rhyolitic dacite

• Distribution (Major axis): ca. 60 km
• Distribution (Minor axis): ca. 30 km

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

• Distribution: Inugamigawa river - Okinoshiraishi - Echigawa river, Hikone city, Shiga pref.; Omihachiman city, Shiga pref.

• Yoshida et al. (2003) Geology of the Omi-Hachiman District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 72p. (in Japanese with English abstract 3p.)
• Harayama et al. (1989) Geology of the Gozaishoyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 145p. (in Japanese with English abstract 6p.)
• Ishida et al. (1984) Geology of the Hikone-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 121p. (in Japanese with English abstract 6p.)
• Miyamura et al. (1976) Geology of the Hikonetobu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 49p. (in Japanese with English abstract 6p.)