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Seigo Volcaniclastic Member (Matsuda, 2014) Ozaki and Sugiyama, 2018

• Type locality: Seigo - Aimatakami, Minobu city, Minamikoma county, Yamanashi prefecture
• Volcanic rocks
• late Miocene - Pliocene
• Correlation: Karasumoriyama Volcaniclastic Member, Shinoisan Member, Yorihata Member

• Sedimentary facies: Marine
• Lithofacies: Andesite lava, Volcanic breccia, Tuff breccia, Reworked volcanic breccia, Reworked lapilli tuff, Volcanic conglomerate
• Lithofacies (Minor): Tuffaceous sandstone, Conglomerate, Interbedded sandstone and mudstone, Mudstone, Dacite tuff

• Thickness: ca. 1,650 - 1,700 m
• Lower limit: Conformity (Hakii Interbeds of Sandstone and Mudstone Member)

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

• Distribution: Seigo - Aimata - Minobu - Odafunahara - Umedaira - Mitsukozawa - Yokonenaka, Minobu city, Minamikoma county, Yamanashi pref.

• Ozaki and Sugiyama (2018) Geology of the Minobu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 169p. (in Japanese with English abstract 7p.)
• Sugiyama and Matsuda (2014) Geology of the Nanbu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 134p. (in Japanese with English abstract 5p.)