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Nagane Formation Ota et al., 1957 (Photo)

• Type locality: Nagane creek, Aiuchi, Goshogawara city (Shiura city), Aomori prefecture
• Coherent formation
• middle Miocene (15.5 - 15.0 Ma, Nishikurosawa stage)
• Contemporaneous heterotopic facies: Tappi Volcanic Rocks
• Intruded by: Rhyolite

• Sedimentary facies: Marine
• Sedimentary facies (Upper): Open sea
• Sedimentary facies (Lower): Shallow marine
• Lithofacies (Upper): Tuffaceous sandstone, Andesitic tuff, Mudstone
• Lithofacies (Lower): Basaltic lava, Dolerite, Basaltic tuff breccia
• Lithofacies (Minor): Andesite lava, Tuff breccia, Tuff

• Thickness: 100 - 500 m
• Upper limit: Top of the sandstone bed of Nagane Formation
• Upper limit: Conformity (Umanokamiyama Formation)
• Lower limit: Conformity (Fuyube Formation)

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

• Distribution: Nagane creek, Aiuchi, Goshogawara city, Aomori pref.; Isomatsu river, Goshogawara city, Aomori pref.; Okutairahe - Tsunashirazu, Imabetsu city, Higashitsugaru county, Aomori pref.
• Fossils (Kadonosawa fauna): Glycymeris matumoriensis, Patinopecten kobiyamai, Dosinia nomurai, Cyclina cfr. japonica
• Fossils (Foraminifera): Globorotalia fohsi

• Hoshi et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.4, pp.163-170, DOI
• Kamikuri et al. (2010) Jour. Geol. Soc. Japan, vol.116, no.8, pp.403-411 DOI
• Fujii (1981) Geology of the Aburakawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 38p. (in Japanese with English abstract 3p.)
• Uemura et al. (1959) Kanita, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 30p. (in Japanese with English abstract 5p.)
• Tsushima and Uemura (1959) Kodomari, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 45p. (in Japanese with English abstract 5p.)
• Saito and Uemura (1957) Horozuki, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 26p. (in Japanese with English abstract 7p.)
• Ota et al. (1957) Mimmaya, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 30p. (in Japanese with English abstract 5p.)