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Warudaniyama Lava

• Type locality: Warudani valley, Azumi, Matsumoto city, Nagano prefecture
• Volcanic rocks
• Pleistocene (69.5 ka)
• Correlation: Warudaniyama Pyroclastic Rocks

• Sedimentary facies: Terrestrial
• Lithofacies (Upper): Quartz biotite-bearing hornblende hypersthene andesite lava (3 flow units)
• Lithofacies (Lower): Biotite-bearing hornblende hypersthene andesite lava (2 flow units)

• Thickness: 400 m or thicker
• Upper limit: Unconformity (Nakaotoge Lava, Nakao Pyroclastic Flow Deposit, Odana Lava, Shimohorizawa Lava, Hosoike Dome Lava)
• Lower limit: Unconformity (Mino Belt, Takidani Granodiorite)

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

• Distribution: Warudani valley - Shimoyuzawa creek - Mount Warudaniyama - Motofumizawa creek, Azumi, Matsumoto city, Nagano pref.

• Oikawa et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.49-61 DOI
• Harayama (1990) Geology of the Kamikochi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 175p. (in Japanese with English abstract 11p.)