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Tsuchikurazawa Limestone

• Type locality: Tsuchikura creek, Kotaki, Itoigawa city, Niigata prefecture
• Coherent formation
• It was treated as a exotic block in Kotaki Formation, an accretionary complex in Akiyoshi Belt.
• Devonian (Corals)

• Sedimentary facies: Marine

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

• Distribution: Tsuchikurazawa creek - Matsuozawa creek, Kotaki, Itoigawa city, Niigata pref.
• Fossils: Crustaceans (Cyclus tazawai), Brachiopods (Gigantoproductus sp.), Rugosa, Tabulate corals, Bryozoans?, Stromatopods, Calcareous algae
• Fossils (Tabular corals, flow stone at the downstream): Mesofavosites cf. igoi (Kamei, 1955), Pachyhelioplasma sp., Auloporoidea fam., gen. et sp. indet

• Takeuchi et al. (2017) Geology of the Tomari District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 121p. (in Japanese with English abstract 4p.)
• Niko and Ibaraki (2011) Jour. Geol. Soc. Japan, vol.117, no.4, pp.259-262 DOI
• Ibaraki et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.8, pp.423-426 DOI