[ Top ] [ Japanese ]

Fujina Formation (Tomita and Sakai, 1937) Takayasu and Nakamura, 1984

Invalid synonym: Fujina Mudstone Formation

• Type locality: Fujina, Tamayu town, Matsue city, Shimane prefecture
• Coherent formation
• middle Miocene (14 - 13 Ma)
• Correlation: Furue Formation

• Sedimentary facies: Shallow marine
• Water temperature: Cold ocean current
• Depth of water: 20 - 60 m
• Lithofacies (Upper): Siltstone
• Lithofacies (Lower): Sandstone
• Lithofacies (Minor): Interbedded sandstone and siltstone, Interbedded sandstone and conglomerate
• Lithofacies (Basal): Conglomerate
• Lithofacies (Basal, Minor): Sandstone

• Thickness: ca. 400 - 500 m
• Thickness (Basal): ca. 150 m
• Upper limit: Conformity (Matsue Formation, Hikawa Formation), Unconformity (Noro Basalt)
• Lower limit: Conformity (Omori Formation, Kimachi Formation)

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

• Distribution: Izumo city, Shimane pref.; Arashima town, Yasugi city, Shimane pref.; Shinji town, Matsue city, Shimane pref.; Fujina - Iya town - Adakai town, Matsue city, Shimane pref.
• Fossils: Desmostylus japonicus, Eumetopias cf. jubata, Argonauta tokunagai, Mizuhobaris izumoensis, Coptothyris grayi, Fishes (Otolith), Sharks (Carcharhinus priscus, Isurus hastalis, Isurus retroflexus, Pristis sp.)
• Fossils (Decapods): Carcinoplax antiqua, Itoigawa minoensis, Mrusia takahashii, Platepistoma kaedei, Scylla ozawai
• Fossils (Fujina fauna): Acila divaricata submirabilis, Anadara tazawaensis, Anomia sp., Boreotrophon cf. elegantula, Buccinum yatukanum, Calliostoma (Tristichotrachus) cf. miyakoae, Cancellaria sp., Chlamys cf. farreri, Clinocardium shinjiense, Conchocele sp., Crassostrea gigas, Crepidula cf. jimboana, Cryptonatica cf. tugaruana, Cultellus izumoensis, Cyclocardia fujinaensis, Dosinia kaneharai fujinaensis, Ennucula praenipponica, Fissidentalium yokoyamai, Fulgoraria sinziense, Glycymeris izumoensis, Kaneharaia kaneharai fujinaensis, Kotorapecten kagamianus kagamianus, Lima (Acesta) cf. yagenensis, Liracassis japonica, Lucinoma annulata, Luntia cf. pila, Macoma optiva, Margarites sinzi, Mercenaria yokoyamai, Mizuhopecten sp., Modiolus modiolus difficilis (= Modiolus kurilensis), Mya (Arenomya) cf. japonica, Nassarius sp., Neptunia sp., Neverita kiritaniana, Olivella iwakiensis, Pandora sp., Panope nomurae, Paphia sp., Periploma (Aelga) besshoensis, Phacosomahataii, Phos iwakianus fujinaensis, Portlandia gratiosa, Protorotella sp., Saccella confusa toyomaensis, Serripes cf. groenlandicus, Sinum yabei, Siphonalia cf. spadicea, Sulcurites cryptoconoides, Supisula (Mactrameris) shinjiense, Sydaphera sp., Teredo sp., Thracia higashinodonoensis, Turritella tanaguraensis, Umbonium sp., Vasticardium sp.
• Fossils (Ostracods): Kotoracythere tsukagoshii, Acanthocythereis koreana, Neomonoceratina cf. tsurugasakensis, Neomonoceratina japonica, Palmoconcha irizukii, Elofsonella sp., Laperousecythere sp., Palmenella limicola, Acanthocythereis dunelmensis, Acanthocythereis tsurugasakensis, Robertsonites reticuliformus
• Fossils (Foraminifera): Ammonia tochigiensis, Amphicoryna fukushimaensis, Amphicoryna pauciloculata, Anomalina glabrata, Buccella frigida, Cribroelphidium imanishii, Cribrostomoides cf. crassimargo, Cyclammina cancellata, Epistominella pulchella, Gaudryina ishikiensis, Globigerina angustiumbilicata, Globigerina praebulloides praebulloides, Globigerina praebulloides pseudociperonensis, Globigerina weissi, Globigerina woodi, Globigerinita glutinata, Globorotalia continuosa, Globorotalia quinifalcata, Globorotalia praescitula, Globorotalia peripheroronda, Globorotalia scitula, Guttulina yabei, Islandiella cf. helenae, Pullenia salisburyi, Quinaqueloculina adneriana, Quinqueloculina sakaii, Quinqueloculina vulgaris, Uvigerina akitaensis, Uvigerina cf. hootsi

• Kano (2018) Jour. Geol. Soc. Japan, vol.124, no.10, pp.781-803 DOI
• Sawada et al. (2013) Jour. Geol. Soc. Japan, vol.119, no.4, pp.267-284 DOI
• Matsuura et al. (2013) Jour. Geol. Soc. Japan, vol.119, no.4, pp.312-320 DOI
• Sato et al. (2011) Jour. Geol. Soc. Japan, vol.117, no.8, pp.439-450 DOI
• Tanaka and Nomura (2009) Jour. Geol. Soc. Japan, vol.115, no.6, pp.261-265 DOI
• Utada (2007) Jour. Geol. Soc. Japan, vol.113, no.8, pp.438-453 DOI
• Kano et al. (1998) Geology of the Taisha District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 58p. (in Japanese with English abstract 3p.)
• Kano et al. (1994) Geology of the Matsue District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 126p. (in Japanese with English abstract 5p.)
• Kano et al. (1991) Geology of the Imaichi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 5p.)