Atsumidake Formation

Volcanic rocks
Miocene

Atsumi Group
[ Upper ]
~~~~~~~~~~~~~~
Irakawa Formation
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Atsumidake Formation
--------------
Aburato Formation
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Yamairagawa Formation
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Hitokasumi Formation
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[ Lower ]

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

Distribution: Yamagata pref.

Tsuchiya et al. (1984) Geology of the Tsuruoka District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 77p. (in Japanese with English abstract 5p.)