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Numazawa-Mizunuma Pyroclastic Flow Deposit (Takahashi and Sugawara, 1985)

Abbr. Nm-MZ

Invalid synonym: Mizunuma Pyroclastic Flow Deposit, Numazawa-Kaneyama Tephra

• Tephra
• Pleistocene (53 ka; 51 ka, FT)

• Lithofacies: Pyroclastic flow deposit
• Lithofacies: Biotite cummingtonite hornblende dacite

• Source: Numazawa volcano
• Host: Kanbara Group, Middle Terrace Deposit (Kawamata)
• Thickness: 21 - ca. 100 m
• Eruptive volume: ca. 1 km³ DRE

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

• Distribution: Niigata pref.; Wasezawa, Kitashiobara city, Yama county, Fukushima pref.; Tadami river - Mukure creek, Kaneyama city, Onuma county, Fukushima pref.; Ouchi, Shimogo city, Minamiaizu county, 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.)
• Kamoi et al. (2016) Geology of the Niigata and Uchino District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 90p. (in Japanese with English abstract 2p.)
• Kubo et al. (2015) Geology of the Kawamata District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 86p. (in Japanese with English abstract 4p.)
• Yamamoto et al. (2006) Geology of the Kitakata District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 63p. (in Japanese with English abstract 5p.)
• 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.)
• Yamamoto (1999) Geology of the Tajima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 85p. (in Japanese with English abstract 8p.)