[ Top ] [ Japanese ]

Futamata Pyroclastic Flow Deposit

• Volcanic rocks
• middle - late Pleistocene

• Lithofacies: Olivine hornblende quartz-bearing orthopyroxene clinopyroxene andesite pyroclastic rocks

• Thickness (Overall): 80 m or thicker
• Thickness (A unit): 50 cm - A few m

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

• Distribution: Fukushima pref.

• Yamamoto (1999) Geology of the Tajima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 85p. (in Japanese with English abstract 8p.)