[ Top ] [ Japanese ]

Honkesamaru Lava

• Volcanic rocks
• Pleistocene

• Lithofacies: Two-pyroxene andesite lava, Tuff breccia

• Source: Kesamaru volcano
• Thickness (Tuff breccia): Some dozen m

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

• Distribution: Mount Kesamaru, Numata city - Midori city, Gunma pref. - Nikko city, Tochigi pref.

• Kawata and Ozawa (1955) Ashio, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 57p. (in Japanese with English abstract 7p.)