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Machiniwasaka Debris Avalanche Deposit

• Type locality: Fukushima prefecture
• Volcanic rocks
• Sector collapse deposit
• middle Pleistocene

• Sedimentary facies: Flow mounds
• Lithofacies: Debris avalanche deposit

• Source: Mount Iegata
• Lower limit: Unconformity (Takakurayama volcano, Shionokawa volcano)

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

• Distribution: Machiniwasaka, Fukushima city, Fukushima pref.

• Furukawa et al. (2018) Geology of the Azuma Yama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 74p. (in Japanese with English abstract 3p.)