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Yagori Volcaniclastics (Nishiki et al., 2007) Nishiki and Takahashi, 2012

Abbr.: YG

• Type locality: 1,500 m above sea level, east slope of Mount Yabashira, Sakuho city, Minamisaku county, Nagano prefecture
• Volcanic rocks
• early Pleistocene (0.98, 0.87 Ma, K-Ar)

• Lithofacies: Volcanic fan
• Lithofacies: Olivine clinopyroxene basalt, Orthopyroxene olivine clinopyroxene basalt
• Lithofacies: Lavas (5 flow units), Debris flow deposit, Welded pyroclastic rocks, Agglutinates

• Source: Mount Yabashira
• Eruptive volume: 15.5 km³
• Thickness (A unit): ca. 5 m
• Upper limit: Iridogawa Lava, Odakegawa Lavas, Yabashirazawa Lavas, Mizunashigawa Lavas
• Upper limit: Unconformity (Usonokuchi Gravel Bed)

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

• Distribution: 900 - 1,900 m above sea level, Yuzawa creek, 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