Asagaya Mudstone Member

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Asagaya Mudstone Member

Coherent formation
early - late Miocene

Sedimentary facies: Marine
Lithofacies: Mudstone, Silty mudstone
Lithofacies (Minor): Tuffaceous mudstone, Shale

Thickness: 40 - 150 m
Upper limit: Conformity, partly interfingered (Shimoaraya Tuff Member)
Lower limit: Conformity (Kurokabe Basalt, Nanamagari Tuff Member)

Yatsuo Group (Kanazawa, Ishikawa pref.)
[ Upper ]
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Asagaya Mudstone Member
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Nanamagari Tuff Member
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Sunagozaka Formation
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[ Lower ]

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

Distribution: Asagaya town - Shimotatsumi town - Hiraguri, Kanazawa city, Ishikawa pref.
Fossils: Shellfishes (Yoldia sp.), Echinoids (Schizaster recticanalis), Sponges (Makiyama chitanii), Diatoms

Imai (1959) Kanazawa, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 27p. (in Japanese with English abstract 3p.)