[ Top ] [ Japanese ]

Uchiyama Formation Takeuchi et al., 2015

• Type locality: Junikannoyosui, Uchiyama, Unazuki, Kurobe city, Toyama prefecture
• Coherent formation
• Early - Late Cretaceous (110 - 96.6 Ma, FT, U-Pb)
• Contemporaneous heterotopic facies: Shiritakayama Formation
• Correlation: Akahageyama Formation

• Sedimentary facies: Terrestrial
• Lithofacies (Upper): Rhyolite lava, Tuff, Andesite lava, Tuff breccia, Volcanic breccia
• Lithofacies (Upper, Minor): Sandstone
• Lithofacies (Lower): Conglomerate
• Lithofacies (Basal): Conglomerate

• Thickness: 360 - 500 m
• Upper limit: Conformity (Oyashirazu Formation)
• Lower limit: Unconformity (Hida Belt, Kurobishiyama Formation)

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

• Distribution: Uchiyama - Nakatani - Ogawa dam - Ogawa hot spring, Unazuki, Kurobe city, Toyama pref.; Mount Ochiyama - Sasakomatadani valley, Asahi city, Shimoniikawa county, Toyama pref.; Mount Oitsurushiyama, Nyuzen city, Shimoniikawa county, Toyama pref.

• 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.)
• Takeuchi et al. (2015) Jour. Geol. Soc. Japan, vol.121, no.7, pp.193-216, DOI
• Takeuchi et al. (2015) Jour. Geol. Soc. Japan, vol.121, no.1, pp.1-17 DOI