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Takakurayama Lava (Igarashi et al., 1984) Kaneko, 1988

• Type locality: 800 m above sea level of western slope of the summit of Mount Takakura, Nozawaonsen city, Shimotakai county, Nagano prefecture
• Volcanic rocks
• early Pleistocene

• Lithofacies: Augite hypersthene andesite, Olivine hypersthene augite andesite lava

• Source: Mount Kenashiyama
• Thickness: ca. 70 - 100 m
• Upper limit: Unconformity (Hakkenzan Lava)
• Lower limit: Unconformity (Takakura Lava, Oirizawa Lava)

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

• Distribution: summit of Mount Takakura - Uenotaira highland, Nozawaonsen city, Shimotakai county, Nagano pref.

• Yanagisawa et al. (2000) Geology of the Iiyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 144p. (in Japanese with English abstract 6p.)
• Shimazu and Tateishi (1993) Geology of the Naebasan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 90p. (in Japanese with English abstract 5p.)