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Sennozawa Formation (Miyashita 1968) Nagamori et al., 2010
Synonym: Sennouzawa Formation, Maesawa Formation
- Sedimentary facies: Marine
- Lithofacies: Sandy mudstone, Sandstone
- Sedimentary structures: Parallel stratification, Cross stratification, Climbing ripples, Current ripples, Slump structure, Sole marks
- Paleocurrent: West to East, Fan-like
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Sennozawa - Maezawa creek - Yokokawa river - Nechigawa river - Nakumigawa river, Otari city, Kitaazumi county, Nagano pref.; Ueyoko - Niodo, Itoigawa city, Niigata pref.
- Fossils: Whales (Rib), Foraminifera
- Fossils (Zenkojionsen fauna): Anadara amicula, Cardium sp., Chlamys sp., Dosinia (Kaneharaia) kaneharai, Glycymeris cf. yamasakii, Laevicardium angustum, Mercenaria y-iizukai, Mizuhobaris izumoensis, Mizuhopecten matumoriensis, Mizuhopecten tryblium (= Kotorapecten tryblium), Panomya simotomensis, Pseudomiantis pinguis, Serripes makiyamai nigamiensis, Thracia sp., Trophenopsis solitarius
- Fossils (Foraminifera): Globorotalia rikuchuensis, Globorotalia siakensis
- Nagamori et al. (2018) Geology of the Itoigawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 75p. (in Japanese with English abstract 3p.)
- Nagamori et al. (2010) Geology of the Kotaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 130p. (in Japanese with English abstract 4p.)
- Takeuchi et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.123-142 DOI
- Nakano et al. (2002) Geology of the Shiroumadake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 105p. (in Japanese with English abstract 5p.)