[ Top ] [ Japanese ]
Hojuji Formation (Akamine, 1952) Yoshikawa et al., 2002
Invalid synonym: Hojuji Mudstone Formation, Akagami Formation (Akagami Shale Formation, Altered diatomaceous siltstone), Kirihata Formation
- Type locality: Hojuji, Suzu city, Ishikawa prefecture
- Coherent formation
- early - middle Miocene (17 - 15.7 Ma, Diatoms)
- Sedimentary facies: Marine
- Lithofacies: Siliceous siltstone, Diatomaceous siltstone
- Lithofacies (Lower): Calcarous siltstone
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Hojuji - Akagami - Higashiyamanaka town, Suzu city, Ishikawa pref.
- Fossils: Foraminifera, Calcareous nannofossils, Radiolarians, Silicoflagellates, Dinoflagellates, Pollen
- Fossils (Diatoms): Actinocyclus ingens f. ingens, Actinocyclus ingens f. planus, Actinocyclus octonarius, Actinoptychus senarius, Arachnoidiscus spp., Aulacoseira spp., Azpeitia vetustissima, Cavitatus exiguus, Cavitatus jouseanus, Cavitatus linearis, Clavicula polymorpha, Coscinodiscus lewisianus, Coscinodiscus marginatus, Coscinodiscus perforatus, Coscinodiscus radiatus, Delphineis miocenica, Delphineis penelliptica, Diploneis smithii, Grammatophora spp., Hemiaulus polymorphus (= Eucampia sp.), Hyalodiscus obsoletus, Melosira sol, Paralia sulcata, Plagiogramma staurophorum, Proboscia interposita, Rhizosolenia styliformis, Stellarima microtrias, Stephanopyxis sp., Thalassionema nitzschioides, Thalassiosira leptopus, Thalassiosira mizunamiensis
- Kano (2018) Jour. Geol. Soc. Japan, vol.124, no.10, pp.781-803 DOI
- Yoshikawa et al. (2002) Geology of the Suzumisaki, Noto-iida and Horyuzan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 76p. (in Japanese with English abstract 4p.)