Haginari-Okuramatasawa Formation

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Haginari-Okuramatasawa Formation Kano et al., 2012

Type locality: Okuramata creek, Kamikoani city, Kitaakita county, Akita prefecture
Volcanic rocks
Eocene (45.4, 33.9 Ma, FT)
Correlation: Monzen Formation

Sedimentary facies: Terrestrial
Lithofacies: Pyroclastic flow deposit
Lithofacies: Dacitic welded pumice volcanic lapilli tuff
Lithofacies (Minor): Dacitic tuff
Lithofacies: Pumpellyite bearing

Thickness: ca. 140 m
Upper limit: Unconformity (Torisakagawa Formation)
Lower limit: Abut unconformity (Haginari Granite)

Aniai, Akita pref.
[ Upper ]
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Onnagawa Formation
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Kitanomatasawa Formation
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Utto Formation
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Torisakagawa Formation
~~~~~~~~~~~~~~
Omata Formation
?--?--?--?--?-
Haginari-Okuramatasawa Formation
?--?--?--?--?-
[ Lower ]

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

Distribution: Okuramata creek, Kamikoani city, Kitaakita county, Akita pref.

Kano (2018) Jour. Geol. Soc. Japan, vol.124, no.10, pp.781-803 DOI
Kano et al. (2012) Geology of the Aniai District, 2nd Edition, 1:50,000 Quadrangle Series, Geological Survey of Japan, AIST, 59p. (in Japanese with English abstract 4p.)