[ Top ] [ Japanese ]

E Shale Member Akahane, 1975

• Type locality: Kanba creek, Nadachi river, Nadachi ward, Joetsu city, Niigata prefecture
• Coherent formation
• Rift basin sediments
• Miocene (? - 11.5 Ma)

• Sedimentary facies: Marine
• Sedimentary facies: Submarine fan (Sandy radial fan type)
• Sedimentary facies: Upper part of the 2nd marine regression - transgression sequences
• Sedimentary facies: Muddy turbidite
• Lithofacies: Shale
• Lithofacies (Minor): Tuff
• Sedimentary structures: Sandstone dykes

• Thickness: 200 m
• Upper limit: Conformity (F Alternation of Sandstone and Mudstone Member)
• Lower limit: Conformity (D Alternation of Sandstone and Mudstone Member)

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

• Distribution: Shiun valley - Kanba creek - Kuwatori river, Nadachi river, Nadachi ward, Joetsu city, Niigata pref.
• Fossils (Fishes): Clupea sp., Rays (Kubikichthys raris), Shellfishes (Periploma sp.)
• Fossils (Nishikubiki flora): Actinodaphne sp., Anodendron sp., Castanopsis sp., Cerbera sp., Chamaecyparis sp., Cladrastis sp., Cunninghamia sp., Daphniphyllum sp., Dioon sp., Elaeocarpus sp., Fagus antipofi, Ficus mioretusa, Hibiscus hamabo, Hijikia sp., Keteleeria sp., Lithocarpus sp., Litsea sp., Machilus nathorsti, Magnolia sp., Mallotus sp., Myrica sp., Myrtus sp., Pinus sp., Pittosporum sp., Quercus glauca, Ternstroemica maekawai
• Fossils (Warm marine seaweeds): Cystophyllum cf. caespitosum, Cystophyllum cf. hakodatense, Cystophyllum cf. sisymbrioides, Gloiopeltis cf. furcata, Sargassum cf. kjellmanianurn, Sargassum cf. patens, Zostera? sp.

• Takano (2011) Jour. Geol. Soc. Japan, vol.117, no.4, pp.238-258 DOI
• Akahane and Kato (1989) Geology of the Takada-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 89p. (in Japanese with English abstract 3p.)