[ Top ] [ Japanese ]

2nd Pyroclastic Cone Deposit

• Type locality: east of Mount Onamedake, Tazawako, Senboku city, Akita prefecture
• Tephra
• Pyroclastic cone
• Pleistocene - Holocene

• Lithofacies: Orthopyroxene clinopyroxene-bearing olivine basalt
• Lithofacies: Scoria, Volcanic bomb

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

• Distribution: east of Mount Onamedake, Tazawako, Senboku city, Akita pref.

• Suto and Ishii (1987) Geology of the Shizukuishi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 142p. (in Japanese with English abstract 5p.)