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Lower Andesitic Volcaniclastics Member

• Volcanic rocks
• Early Cretaceous, Valanginian - Hauterivian

• Sedimentary facies: Marine
• Lithofacies: Andesite
• Lithofacies (Minor): Dacite
• Lithofacies: Volcanic breccia, Tuff breccia, Lapilli tuff, Tuff
• Lithofacies (Lower): Tuff breccia, Volcanic breccia, Tuff
• Lithofacies (Bottom): Sandstone
• Sedimentary structures: Cross stratification, Graded bedding

• Thickness: ca. 1,200 m
• Thickness (Lower): 350 m or thicker
• Thickness (Bottom): ca. 5 - 6 m
• Upper limit: Bottom of the basalt lava-bearing horizon
• Lower limit: Unconformity (Domeki Sandstone MemberKobitawatashi Shale Member, Futawatashi Shale Member)

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

• Distribution: Hotokehama - Kurosaki, Ayukawahama, Ishinomaki city, Miyagi pref.

• Takizawa et al. (1974) Geology of the Kinkasan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 62p. (in Japanese with English abstract 5p.)