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Hakaseyama Volcanic Rocks (Kitamura et al., 1968)

Invalid synonym: Hakaseyama Andesite

• Type locality: Omata creek, Yanaizu city, Kawanuma county, Fukushima prefecture
• Volcanic rocks
• Stratovolcano
• late Pliocene (2.8, 2.78, 2.57 Ma)

• Sedimentary facies: Lahar deposit
• Lithofacies: Orthopyroxene clinopyroxene basalt, Andesite
• Lithofacies: Lava (Aa lava, Agglutinates), Volcanic breccia, Volcanic conglomerate

• Thickness: ca. 300 m
• Lower limit: Unconformity (Izumi Formation, Hotokezawa Pyroclastic Flow Deposit)

• Distribution: Mount Hakase - Omata creek, Yanaizu city, Kawanuma county, Fukushima pref.

• Yamamoto and Komazawa (2004) Geology of the Miyashita District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 71p. (in Japanese with English abstract 5p.)