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Motodoriyama Volcanic Rocks (Yagi and Yagi, 1958) Akahane and Togashi, 1992

Invalid synonym: Motodori Lava

• Type locality: Mount Motodori, Mure, Iizuna city, Kamiminochi county, Nagano prefecture
• Volcanic rocks
• Lava dome
• Pleistocene (ca. 0.2 Ma)
• Intruded in: Minochi Formation

• Lithofacies: Calc-alkaline
• Lithofacies: Hornblende andesite lava

• Thickness: 95 m
• Upper limit: Unconformity (Toyono Formation)

• Distribution: Mount Motodori, Mure, Iizuna city, Kamiminochi county, Nagano pref.; Usagimi creek, Toyono town, Nagano city, Nagano pref.

• Nagamori et al. (2003) Geology of the Togakushi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 109p. (in Japanese with English abstract 3p.)
• Akahane et al. (1992) Geology of the Nakano District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 106p. (in Japanese with English abstract 4p.)