Takatozawa Volcanics Member

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Takatozawa Volcanics Member Kosaka et al., 2022

Type locality: Takatozawa creek, Susukigawa river, Matsumoto city, Nagano prefecture
Volcanic rocks
middle Miocene

Lithofacies: Basalt - Andesite lava, Hyaloclastite, Pyroclastic rocks
Lithofacies (Minor): Tuffaceous sandstone, Mudstone

Thickness: 400 m or thicker
Upper limit: Conformity (Fujii Sandstone and Mudstone Member)

Uchimura Formation (Western part)
[ Upper ]
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Kariyahara Sandstone and Mudstone Member
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Ichinose Sandstone and Conglomerate Member
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Asamatoge Sandstone and Mudstone Member
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Yamada Sandstone and Conglomerate Member
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Fujii Sandstone and Mudstone Member
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Takatozawa Volcanics Member
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[ Lower ]

Uchimura Formation (Eastern part)
[ Upper ]
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Hosoonotaki Volcanics Member
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Kokuzo Basalt Member
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Reisenji Volcanics Member
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Takenoyu Volcanics Member
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Mozawa Tuffaceous Sandstone Member
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Takatozawa Volcanics Member
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[ Lower ]

Chushin Group
[ Upper ]
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Bessho Formation
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Uchimura Formation
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Moriya Formation
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[ Lower ]

northern Nagano pref.
[ Upper ]
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Hokushin Group
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Chushin Group
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[ Lower ]

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

Distribution: Susukigawa river - Takatozawa creek - Ashikurazawa creek, Matsumoto city, Nagano pref.; Takeshigawa river - Yokosawagawa river, Ueda city, Nagano pref.; Mount Hachibuseyama - Mount Takabocchi, Okaya city, Nagano pref.

Kosaka et al. (2022) Earth Science (Chikyu Kagaku), vol.76, no.4, pp.179-194 DOI