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Kuroiwayama Volcanic Rocks Akabane et al., 1991
- Type locality: Mount Kuroiwa - Lake Katsuraike, Iiyama city, Shimotakai county, Nagano prefecture
- Volcanic rocks
- early Pleistocene
- Lithofacies: Augite hypersthene andesite lava, Augite andesite lava, Pyroclastic rocks
- Distribution: Mount Kuroiwa, Iiyama city, Nagano pref.
- Yanagisawa et al. (2000) Geology of the Iiyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 144p. (in Japanese with English abstract 6p.)