The eolian deposits including the Middle Pleistocene fallout tephra from Iiji volcano, Niigata Prefecture, NE Japan (Tsurugaike, Shimogo Town, Fukushima Prefecture)
The eolian deposits consist mainly of brown-colored massive sandy mud containing abundant weathered volcanic materials. The orange-colored layer in the upper part is the Hiuchigatake- Nanairi tephra at 0.16-0.17 Ma. The white-colored layer in the lower part is the Iiji-Takatsue tephra at 0.25-0.28 Ma, marking a climate terrace in Marine Isotopic Stage 8.
(Takahiro Yamamoto)
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