[ Top ] [ Japanese ]

Senmi Complex Uchino, 2010

Invalid synonym: upper Kanbara Group

• Type locality: Senmi river, Gosen city, Niigata prefecture
• Accretionary complex
• Deposition (Limestone): late Carboniferous, Kasimovian, Gzhelian - middle Permian (Fusulinids)
• Deposition (Chert): middle Permian, Capitanian - late Permian, Wuchiapingian, late Permian, Changhsingian, Late Triassic (Radiolarians, Conodont)
• Deposition (Mudstone): Early Jurassic, Hettangian - Pliensbachian (Radiolarians)
• Accretion: Early Jurassic (Radiolarians)
• Intruded by: Cretaceous granitoids, Miocene rhyolite, Dolerite, Basalt, Andesite

• Sedimentary facies: Marine
• Lithofacies: Mélange facies, Broken facies
• Lithofaceis (Broken facies): Interbedded sandstone and mudstone
• Lithofaceis (Broken facies, Minor): Felsic tuff
• Matrix: Mudstone, Sandstone, Interbedded sandstone and mudstone
• Exotic blocks (Slabs): Greenstone (Basaltic pyroclastic rocks, Lavas, Dolerite), Chert
• Exotic blocks (Crusts): Greenstone (Basaltic pyroclastic rocks, Lavas, Dolerite), Chert, Limestone, Sandstone

• Thickness (appearance): 9,000 m or thicker
• Upper limit: Thrust fault, Unconformity (Tonoiri Formation)
• Lower limit: Thrust fault

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

• Distribution: Mount Hishigatake - Mount Sugana - Nakanosawa, Niigata pref.; Natsuhari - Kuwasawa - Kadohara - Mount Ikatsuchi - Karasawa - Kawachi - Jonoiri river, Shimotokura, Hayade river, Gosen city, Niigata pref.; Takayanagi river, Kamitakayanagi, Kamo city, Niigata pref.; southwest Mount Awagatake, Kamo city - Sanjo city, Niigata pref.
• Fossils (Limestone): Corals (Rogosa), Bryozoans (Pseudobatostomella sp.), Calcareous algae, Crinoids, Brachiopods, Sponges?
• Fossils (Limestone, Fusulinids): Neoschwagerina sp., Yabeina sp., Chusenella sp., Dunbarula sp., Kahlerina sp., Yabeina kaizensis Huzimoto, 1936, Chusenella sp., Sichotenella ovoidea (Sosnina, 1981), Rauserella sp., Staffella sp., Schubertella sp., Darvasoschwagerina cf. shimodakensis, Daixina sp., Rauserites sp., Triticites ozawai, Montiparus sp.
• Fossils (Limestone, Foraminifera): Climacammina sp., Eotuberitina sp., Climacammina valvulinoides Lange, 1925, Palaeotextulariidae indet, Neoendothyra sp., Pachyphloia ovata Lange, 1925, Geinitzina sp.
• Fossils (Chert, Radiolarians): Archaeocenosphaera? sp., Entactinia spp., Latentifustula spp., Pseudotormentus cf. kamigoriensis, Pseudoalbaillella? sp., Raciditor gracilis, Albaillella sp., Albaillella triangularis, Albaillella spp., Copiellinta? sp., Entactinia spp., Ishigaum trifustis, Latentifistula sp., Raciditor gracilis
• Fossils (Mudstone, Radiolarians): Canoptum sp., CAnoptum aff. laxum, Canoptum cf. praeanulatum, Canoptum cf. unicum, Canoptum aff. farawayense, Relanus? sp., Nassellaria gen. et sp. indet, Sarla? spp., Livarella sp., Gorgansium spp., Natoba sp., Paronaella, Zhamoidellum sp., Saitoum sp., Haeckelicyrtium sp., Canoptum anulatum, Canoptum cf. artum, Parahsuum ovale, Parahsuum cf. simplum, Parahsuum spp., Foremania cf. sandilandsensis, Archaeodictyomitra? sp., Zhamoidellum yehae, Helvetocapsa minoensis, Helvetocapsa cf. plicata, Katroma? sp., Lantus obesus, Lantus praeobesus, Paronaella cf. grahamensis, Eucyrtidiellum cf. unumaense, Broctus ruesti, Eucyrtidiellum spp., Parahssum sp., Dictyomitrella? cf. kamoensis, Parvicingula spinifera, Hsuum sp., Hsuum aff. philippinense, Hsuum cf. altile, Hsuum exiguum, Parvicingula nanoconica, Elodium? sp., Homoeoparonaella? sp., Hagiastrum sp., Nassellaria gen. et sp. indet, Zhamoidellum? sp., Emiluvia? sp., Praeconocaryomma decora

• Kobayashi (2013) Jour. Geol. Soc. Japan, vol.119, no.3, pp.217-221 DOI
• Kudo et al. (2011) Geology of the Kamo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 162p. (in Japanese with English abstract 4p.)
• Uchino and Hori (2010) Jour. Geol. Soc. Japan, vol.116, no.8, pp.441-446 DOI
• Kusano et al. (2010) Jour. Geol. Soc. Japan, vol.116, no.5, pp.270-282 DOI
• Uchino et al. (2010) Jour. Geol. Soc. Japan, vol.116, no.2, pp.118-123 DOI