Odaira Pyroclastic Flow Deposit

Tephra
middle Pleistocene (0.66 - 0.64 Ma, K-Ar)

Lithofacies: Pyroclastic flow deposit

Source: Nakadaiten-Higashidaiten volcano
Thickness: ca. 100 m

Nakadaiten-Higashidaiten volcano
[ Upper ]
~~~~~~~~~~~~~~
Odaira Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
[ Lower ]

Azuma volcano
[ Upper ]
~~~~~~~~~~~~~~
Jododaira volcano
~~~~~~~~~~~~~~
Takayama volcano
~~~~~~~~~~~~~~
Higashiazumayama volcano
~~~~~~~~~~~~~~
Eboshiyama volcano
~~~~~~~~~~~~~~
Nakaazumayama volcano
~~~~~~~~~~~~~~
Maedaiten volcano
~~~~~~~~~~~~~~
Issaikyoyama volcano
~~~~~~~~~~~~~~
Tenguiwa volcano
~~~~~~~~~~~~~~
Nishidaiten-Nishiazumayama volcano
~~~~~~~~~~~~~~
Nakadaiten-Higashidaiten volcano
~~~~~~~~~~~~~~
Takakurayama volcano
~~~~~~~~~~~~~~
Shionokawa volcano
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Matsukawa river - Yokokawa river, Yonezawa city, Yamagata pref.

Furukawa et al. (2018) Geology of the Azuma Yama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 74p. (in Japanese with English abstract 3p.)