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Okumiyayama Dacite

• Volcanic rocks
• Pleistocene (2.12 Ma, TL; 1.74 Ma, K-Ar)

• Lithofacies: Pyroxene dacite

• Distribution: Oyasu - Akinomiya, Akita pref.

• Takashima and Koshiya (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.97-109 DOI