Ichinose Formation

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Ichinose Formation

Type locality: Yamanashi prefecture
Volcanic rocks
Miocene
Contemporaneous heterotopic facies: Ashigawa Formation

Lithofacies: Tholeiitic (Pigeonite series)
Lithofacies: Basalt
Lithofacies (Minor): Mudstone

Lower limit: Conformity (Furusekigawa Formation)

Ichinose Formation
[ Upper ]
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Onazaka Tuff Member
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Shoji Basalt and Mudstone Member
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Kanzaka Mudstone Member
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[ Lower ]

Nishiyatsushiro Group (western Kofu, Yamanashi pref.)
[ Upper ]
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Kawaguchi Formation
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Ashigawa Formation / Ichinose Formation
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[ Lower ]

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

Distribution: Ichinose, Minobu city, Minamikoma county, Yamanashi pref.; Lake Motosu - Lake Shoji, Fujikawaguchiko city, Minamitsuru county, Yamanashi pref.

Katada (1956) Kofu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 27p. (in Japanese with English abstract 4p.)