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Himegatake Andesite (Tsuchiya, 1999) Kano et al., 2012

• Type locality: Mount Himegatake, Kitaakita city, Akita prefecture
• Volcanic rocks
• Miocene (8.1 Ma, K-Ar)
• Correlation: Manaitayama Volcanic Rocks, Omoriyama Andesite

• Lithofacies: Hyaloclastite
• Lithofacies (Upper): Andesite volcanic breccia
• Lithofacies (Lower): Basaltic andesite volcanic breccia

• Thickness: 350 m or thicker
• Lower limit: Interfingered (Iwaya Formation), Unconformity (Torisakagawa Formation, Kitanomatasawa Formation)

• Distribution: Mount Himegatake, Kitaakita city, Akita pref.; Oboro creek, Kamikoani city, Kitaakita county, Akita pref.

• Kano et al. (2012) Geology of the Aniai District, 2nd Edition, 1:50,000 Quadrangle Series, Geological Survey of Japan, AIST, 59p. (in Japanese with English abstract 4p.)