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Hatamochiyama Intrusive Rock Shimazu et al., 1971
- Type locality: Minamikuroiwa, Kakizaki ward, Joetsu city, Niigata prefecture
- Intrusive rocks
- Pliocene - Pleistocene
- Intruded in: Ogaya Formation
- Lithofacies: Hornblende andesite
- Structures: Columnar joint
- Distribution: Minamikuroiwa, Kakizaki ward, Joetsu city, Niigata pref.
- Kobayashi et al. (1989) Geology of the Okanomachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 112p. (in Japanese with English abstract 5p.)