Anazawa Formation

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Anazawa Formation

Volcanic rocks
Miocene
Correlation: Otani Formation
Correlation (Lower): Yuzawa Formation

Sedimentary facies: Terrestrial
Sedimentary facies (Minor): Marine
Lithofacies: Altered acidic volcaniclastics

Upper limit: Conformity (Nishimyo Formation)
Lower limit: Unconformity

Sumon, Niigata pref.
[ Upper ]
?--?--?--?--?-
Tsunagi Formation
--------------
Nishimyo Formation
--------------
Anazawa Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Sumon, Suhara, Uonuma city, Niigata pref.; Irihirose, Uonuma city, Niigata pref.;

Hiranaka et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.4, pp.177-186 DOI
Yanagisawa et al. (1986) Geology of the Ojiya District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 177p. (in Japanese with English abstract 6p.)