[ Top ] [ Japanese ]

Nakadaiten-Higashidaiten volcano

• Volcanic rocks
• Volcanic cone
• middle Pleistocene (0.66 - 0.54 Ma, K-Ar)

• Lithofacies: Orthopyroxene clinopyroxene andesite
• Lithofacies: Lava

• Source (5 craters): Mount Nakadaiten, Mount Higashidaiten, Mount Shogen, Mount Niseeboshi, Mount Iegata
• Thickness (Lava, A unit): ca. 30 m
• Upper limit: Unconformity (Eboshiyama volcano, Tenguiwa volcano, Nishidaiten-Nishiazumayama volcano, Nakaazumayama volcano)
• Lower limit: Unconformity (Takakurayama volcano)

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

• Distribution: Nakatsu river - Okura river, Inawashiro city, Yama county, Fukushima pref.; Akataki fall - Kurotaki fall, Otaru river, Yonezawa city, Yamagata pref.; Tengendai - Odaira hot spring, 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.)