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In-Ny Tephra Group
Abbr.: In-Ny
Invalid synonym: Iz-Ny
- Type locality: Furuma, Shinano city, Kamiminochi, Nagano prefecture
- Tephra
- Pleistocene (180 ka)
- Correlation: Konan Tephra
- Lithofacies: Cummingtonite bearing
- Source: Iizuna volcano, Nagano pref., Japan
- Host: Kiyokawa Formation
- Thickness: 15 - 80 cm
- In-Ny Tephra Group
- [ Upper ]
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- In-Ny(a)
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- In-Ny(b)
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- In-Ny(c)
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- In-Ny(d)
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Furuma - Takayam, Shinano city, Kamiminochi, Nagano pref.; Sugadairakogen, Ueda city, Nagano pref.; Yokokawa, Matsuida town, Annaka city, Gunma pref.
- Nakazato and Nakazawa (2007) Jour. Geol. Soc. Japan, vol.113, no.12, pp.628-635 DOI