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Kanzaka Mudstone Member (Matsuda and Mizuno, 1955) Ozaki and Sugiyama, 2018
- Type locality: Ichinose station - Kanzaka pass, Minobu city, Minamikoma county, Yamanashi prefecture
- Coherent formation
- Miocene
- Intruded by: Hornblende andesite, Basalt - Dolerite dikes - sills
- Sedimentary facies (Bottom, Basalt): Sheet flow
- Depth of water (Upper): Abbyssal (shallower than CCD)
- Depth of water (Lower): Abbyssal (deeper than CCD)
- Lithofacies: Mudstone
- Lithofacies (Minor): Sandstone, Mudstone-dominant interbedded sandstone and mudstone, Tuffaceous sandstone, Dacite tuff
- Lithofacies (Bottom): Alkaline olivine basalt, Dolerite
- Lithofacies (Bottom): Basalt lava, Volcanic breccia, Hyaloclastite
- Sedimentary structures: Slump structure, Graded bedding, Parallel stratification, Cross stratification
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Tokiwa - Ichinose - Misawa - Kanzaka, Minobu city, Minamikoma county, Yamanashi pref.; Iwama - Miyahara - Iwashita, Ichikawamisato city, Nishiyatsushiro county, Yamanashi pref.
- Fossils: Gymnosomata
- 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.)
- Katada (1956) Kofu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 27p. (in Japanese with English abstract 4p.)