[ Top ] [ Japanese ]

Oishi Lava (Kawachi, 1974-75) Nishiki et al., 2007

Abbr.: OI

Invalid synonym: Ol₃

• Type locality: 900 m above sea level of Oishi, Sakuho city, Minamisaku county, Nagano prefecture
• Volcanic rocks
• early Pleistocene (0.93 Ma, K-Ar)

• Lithofacies: Olivine orthopyroxene clinopyroxene basalt
• Lithofacies: Lava (a flow unit)

• Eruptive volume: 0.3 km³ or more

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

• Distribution: 900 - 980 m above sea level, Oishi river, Sakuho city, Minamisaku county, Nagano pref.

• Nishiki and Takahashi (2012) Jour. Geol. Soc. Japan, vol.118, no.8, pp.499-515 DOI
• Nishiki et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.5, pp.193-211 DOI