[ Top ] [ Japanese ]

Kamitakara Pyroclastic Flow Deposit Kaneko et al., 1976

Invalid synonym: Iwataki Welded Tuff, Iwataki Pyroclastic Flow Deposit

• Tephra
• early - middle Pleistocene (0.65 Ma, K-Ar; 0.92 Ma, FT)
• Contemporaneous heterotopic facies: KMT

• Lithofacies: Pyroclastic flow deposit
• Lithofacies: Biotite rhyolite welded tuff (A cooling unit)
• Sedimentary structures: Eutaxitic structure

• Source: Kaishio Source Vent
• Thickness: 1 - 250 m
• Distribution (Present): 77 km²
• Distribution: ca. 500 km²
• Eruptive volume: 40 km³ or more
• Upper limit: Unconformity (Yamaguchi Gravel Bed)
• Lower limit: Unconformity (Nyukawa Pyroclastic Flow Deposit, Chayano Tuff, Fukuji Tuff Breccia, Uwano Mudflow Deposit, Enako Gravel Bed, Matsumoto Gravel Bed, Kiriyama Gravel Bed)

• Distribution: Osobudani valley - Osudani valley - Takaharagawa river - Arakigawa river - Kohachigagawa river, Okuhidaonsengo, Takayama city, Gifu pref.; Mount Hikagetairayama - Namaigawa river - Yamaguchi, Nyukawa town, takayama city, Gifu pref.; Iwai town - Uwano town - Niihariuwano - Taki town, Takayama city, Gifu pref.; Sakuragaoka, Yamaguchi town, Takayama city, Gifu pref.; Enako, Enako town, Takayama city, Gifu pref.; Sugo, Furukawa town, Takayama city, Gifu pref.

• Harayama (1990) Geology of the Kamikochi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 175p. (in Japanese with English abstract 11p.)
• Yamada et al. (1985) Geology of the Takayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 9p.)
• Kawada (1982) Geology of the Mikkamachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 72p. (in Japanese with English abstract 6p.)