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Kushuko Dolerite

• Type locality: Lake Kushu, Rebun city, Rebun county, Hokkaido
• Volcanic rocks
• early Miocene (18.2 Ma, K-Ar)

• Lithofacies: Dolerite

• Upper limit: Unconformity? (Meshikuni Formation)

• Distribution: Lake Kushu, Rebun city, Rebun county, Hokkaido

• Ueki and Kondo (2010) Jour. Geol. Soc. Japan, vol.116, no.8, pp.437-440 DOI