[ Top ] [ Japanese ]
Arimine Formation Kawai, 1955
Invalid synonym: Arimine Shale
- Type locality: Higashisakamori valley, Arimine, Toyama city, Toyama prefecture
- Coherent formation
- Late Jurassic, Oxfordian - Kimmeridgian (Ammonoids)
- Correlation: Kiritani Formation
- Sedimentary facies: Marine
- Sedimentary facies: Inner bay (Fossils)
- Depth of water: Shallow
- Lithofacies (Upper): Shale, Shale-dominant interbedded sandstone and shale
- Lithofacies (Lower): Sandstone-dominant interbedded sandstone and shale
- Lithofacies (Lower, Minor): Conglomerate
- Lithofacies (Minor): Felsic volcanic rocks, Andesite (Arimine Acidic Volcanic rocks)
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Higashisakamori valley - Inone valley, Arimine, Toyama city, Toyama pref., upstream of Magawa river, Toyama pref.; east slope of Yakushi-daira, Toyama pref.
- Fossils: Radiolarians
- Fossils (Bivalves): Nipponitrigonia kobayashii, Myophorella (Promyophorella) toyamensis, Vaugonia ariminensis, Myophorella (Promyophorella) hidensis, Myophorella (Promyophorella) magawensis, Myophorella (Promyophorella) tetoriensis, Inoceramus sp., Pinna sp., Grossovia? sp.
- Fossils (Ammonoids): Kranaosphinctes sp., Perisphinctes spp., Ataxioceras aff. torquatus, Lithacoceras, Perisphinctes (Kranaosphinctes) matsushimai
- Fossils (Plants): Onychiopsis elongata
- Fossils (Trace): Burrows (Skolithos-type, Planolites-type)
- Matsukawa et al. (2014) Jour. Geol. Soc. Japan, vol.120, no.5, pp.147-164 DOI
- Hirasawa et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.103-121 DOI