[ Top ] [ Japanese ]
Isatomae Formation (Kurosawa, 1929) Onuki, 1956
Invalid synonym: Inai Formation, Tokura Formation
- Type locality: Isatomae seashore, Utatsu, Minamisanriku city, Motoyoshi county, Miyagi prefecture
- Coherent formation
- Middle Triassic, Anisian (Ammonoids)
- Contemporaneous heterotopic facies (Partly): Fukkoshi Formation
- Intruded by: Okayazawa Mass, Harioka Mass, Ohta Mass
- Sedimentary facies: Marine
- Sedimentary facies: Outer continental shelf near the inner continental shelf
- Sedimentary facies: Turbidite, Submarine channel deposit
- Lithofacies: Calcareous sandy slate, Pelitic sandstone
- Lithofacies (Minor): Sandstone, Interbedded sandstone and mudstone, Calcareous siltstone
- Sedimentary structures: Convolute lamination, Current ripples, Slump strucgture, Bioturbation, Trace fossils
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Isatomae seashore - Kudanohama seashore - Obunezawa - Sonae - Minato - Kusakizawa - Masuzawa, Utatsu, Minamisanriku city, Motoyoshi county, Miyagi pref.; Mount Tokusenjo, Kesennuma city, Miyagi pref.; Mount Tatsugane - Oden - Higashikawauchi, Motoyoshi town, Kesennuma city, Miyagi pref.; Mono town - Kitakami town - Mount Jobon, Ishinomaki city, Shizukawa, Minamisanriku city, Motoyoshi county, Miyagi pref.; Misosaku - Osu - Kumazawa - Mount Ishinage - Hara - Kuwahama, Ogachi town, Ishinomaki city, Miyagi pref.; Ozashi, Kitakami town, Ishinomaki city, Miyagi pref.; Terahama - Usojima - Nagashimizu, Shizukawa, Minamisanriku city, Motoyoshi county, Miyagi pref.; Oura - Takenoura - Urashuku - Shimizu - Miyagasaki - Takashiro - Yokoura - Mount Dairokuten - Harinohama - Mount Karamatsu, Onagawa city, Oshika county, Miyagi pref.; Mano - Hikage - Kyonomori - Sawada - Shikamatsu - Takagi - Mount Kagobo - Maeda - Kameyama - Inai - Minato - Iwaida - Sasu - Kazakoshi pass - Hamagurihama - Momonoura, Ishinomaki city, Miyagi pref.; Izushima island - Hirashima island, Onagawa city, Oshika county, Miyagi pref.
- Fossils: Metanothosaurus nipponicus, Mixisosaurus sp., Shellfishes (Nucula sp.), Plants (Neocalamites cf. hoerrensis)
- Fossils (Ammonoids): Anolcites? sp., Balatonites gottschei, Balatonites kitakamicus, Beyrichites sp., Cuccoceras aff. submarinoi, Danubites japonicus, Danubites cf. kansa, Danubites naumanni, Danubites shimizui, Discophychites inaicus, Episagoceras sp., Gymnites cf. kirata, Gymnites watanabei, Hollandites haradai, Hollandites japonicus, Hollandites japonicus crassicostata, Hollandites japonicus tokuraensis, Hollandites nodai, Japonites planiplicatus, Leiphyllites cf. pseudopradymna, Monophyllites sphaerophyllus, Neocalamites cf. hoerensis, Paracrochordiceras sp., Posidonia japonica, Protrachyceras sp., Ptychites inaicus, Rikuzenites nobilis, Sturia japonica, Sturia cf. sansovinii, Ussurites yabei
- Fossils (Trace fossils): Helminthoida isp., Scalarituba isp.
- Ehiro and Morikiyo (2013) Jour. Geol. Soc. Japan, vol.119, Supplement, pp.47-67 DOI
- Takeuchi and Mikoshiba (2002) Geology of the Senmaya District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 76p. (in Japanese with English abstract 3p.)
- Takeuchi and Kaneko (1996) Geology of the Shizugawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 5p.)
- Kamada (1993) Geology of the Tsuya District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 70p. (in Japanese with English abstract 6p.)
- Kamada and Takizawa (1992) Geology of the Osu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 69p. (in Japanese with English abstract 4p.)
- Takizawa et al. (1990) Geology of the Toyoma District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 126p. (in Japanese with English abstract 8p.)
- Takizawa et al. (1987) Geology of the Yoriiso District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 74p. (in Japanese with English abstract 5p.)
- Takizawa et al. (1984) Geology of the Ishinomaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 103p. (in Japanese with English abstract 7p.)
- Kambe and Shimazu (1961) Kesennuma, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 73p. (in Japanese with English abstract 16p.)