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Samondake Unit (Kawai, 1956)

Invalid synonym: Samondake Formation

• Accretionary complex
• Deposition (Chert): Permian, Triassic, Jurassic (Radiolarians)
• Deposition (Siliceous shale): Middle Jurassic (Radiolarians)
• Intruded by: Omodani Formation
• Correlation: Imajo Complex, Obanashi Complex

• Sedimentary facies: Marine
• Lithofacies: Coherent facies
• Lithofacies (Minor): Mélange facies
• Lithofacies: Sandstone, Siliceous mudstone, Chert
• Lithofacies (Minor): Interbedded sandstone and mudstone, Mudstone, Conglomerate
• Matrix: Mudstone
• Exotic blocks (Crusts): Chert, Interbedded sandstone and mudstone
• Sedimentary structures: Graded bedding, Flute marks
• Paleocurrent: from North-northwest to South-southeast, from West to East

• Thickness: ca. 5,000 - 10,000 m
• Upper limit: Thrust fault, Unconformity (Hinotani Formation, Itoshiro Subgroup, Omodani Formation, Uchigatani Formation)
• Lower limit: Thrust fault (Funafuseyama Unit)

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

• Distribution: Ise - Nonokoyatani valley - Nekuratani valley, Ono city, Fukui pref.; Lake Yashagaike, Minamiechizen city, Nanjo county, Fukui pref.; Uchigatani - Ichijima, Gibishimagawa river - Ichishima, Hachiman town, Gujo city, Gifu pref.; Uminomizotani valley - Takinamidani valley - Arakuradani valley, Itadori town, Seki city, Gifu pref.; Mount Sanshugatake, Ibigawa city, Ibi county, Gifu pref.; Mount Yokoyamadake, Yogo, Nagahama city, Shiga pref.
• Fossils (Radiolarians): Acaeniotyle spp., Archaeodictyomitra spp., Archaeospongoprunum spp., Archicapsa pachyderma, Canoptum sp., Cyrtocapsa? sp., Dictyomitrella? kamoensis, Emiluvia sp., Eucyrtidiellum pustulatum, Eucyrtidiellum unumaense, Eucyrtidium? unumaensis, Foremanina sp., Gigi sp., Gongylothorax sp., Gorgansium gongyloideum, Hsuum matsuokai, Hsuum parasolense, Hsuum primum, Mita sp., Pachyoncus cf. kamiasoensis, Pachyoncus cf. tumidus, Pantanellium cf. oligoporum, Parahsuum simplum, Parvicingula burnsensis, Parvicingula dhimenaensis, Parvicingula gigantocornis, Parvicingula cf. nanoconica, Protununa cf. japonicus, Protunuma turboPseudodictyomitra sp., Saitoum spp., Semihsuum sourdoughense, Sethocapsa funatoensis, Spongocapsula cf. palmerae, Spongosaturnalis? suboblongus, Stichocapsa convexa, Stichocapsa japonica, Stichocapsa plicata plicata, Stichocapsa plicata semiplicata, Stichocapsa cf. robusta, Stichocapsa tegimiis, Stichomitra? aff. takanoensis, Tetratrbs sp., Transhsuum maxwelli, Tricolocapsa conexa, Tricolocapsa? fusiformis, Tricolocapsa minoensis, Tricolocapsa plicarum, Tricolocapsa cf. ruesti, Unuma cf. echinatus, Unma latiscostatus, Yamatoum spp., Zartus dickinsoni, Zartus cf. jonesi, Zartus jurssicus, Zartus thayen, Zhamoidellum spp.

• Sano et al. (2010) Jour. Geol. Soc. Japan, vol.116, no.6, pp.321-340 DOI
• Yamakita and Otoh (2000) Structural Geology, vol.44, pp.5-32
• Saito and Sawada (2000) Geology of the Yokoyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 126p. (in Japanese with English abstract 5p.)
• Wakita and Koido (1994) Geology of the Gero District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 5p.)
• Wakita (1984) Geology of the Hachiman District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 89p. (in Japanese with English abstract 6p.)
• Kawai (1964) Neo, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 66p. (in Japanese with English abstract 12p.)
• Kawai et al. (1957) Arashimadake, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 110p. (in Japanese with English abstract 13p.)