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Jinzai Basalt

• Volcanic rocks
• late Miocene (14.0, 13.6, 13.2 Ma, K-Ar)

• Sedimentary facies: Shallow marine
• Sedimentary facies: Pyroclastic cone
• Sedimentary facies (Minor): Sills
• Lithofacies: Alkaline basalt volcanic conglomerate, Lapilli tuff, Tuff
• Sedimentary structures (Minor): Bomb sag structure

• Mode of eruption: Phreatomagmatic
• Distribution (Diameter): 1.5 km
• Distribution (Crater, Diameter): 400 - 500 m
• Distribution (Height): 100 m
• Thickness: 50 m

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

• Distribution: Jinzai, Izumo city, Shimane pref.

• Sato et al. (2011) Jour. Geol. Soc. Japan, vol.117, no.8, pp.439-450 DOI
• Kano et al. (1998) Geology of the Iwami-Oda and Oura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 118p. (in Japanese with English abstract 5p.)