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Upper Washidake Lava

• Volcanic rocks
• Pleistocene (0.11, 0.10 Ma)

• Lithofacies: Hypersthene augite andesite lava (more than 2 flow units)
• Lithofacies (Lower): Hypersthene augite dacite lava
• Lithofacies (Lower): Hypersthene augite hornblende dacite pumice tuff

• Thickness: ca. 250 m or thicker
• Thickness (Lower): ca. 50 cm
• Upper limit: Unconformity (Nakanodani lava, Shomyodaki Pyroclastic Flow Deposit, Zaratoge Welded Pyroclastic Rocks)
• Lower limit: Unconformity (Yukawadani Volcanic Rocks, Lower Washidake Lava)

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

• Distribution: Mount Washidake - Kariyasu pass - Nakanotani valley - Nukuidani valley, Toyama city, Toyama pref.; Mount Tonbiyama, Tateyama city, Nakaniikawa county, Toyama pref.

• Nakano et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.37-48 DOI
• Harayama et al. (2000) Geology of the Tateyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 218p. (in Japanese with English abstract 6p.)