Usuzawa Member

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Usuzawa Member Makimoto et al., 1996

Type locality: Hikageiri forest road, Takato, Ina city, Nagano prefecture
Volcanic rocks
Basal conglomerate of Moriya Formation
Miocene

Lithofacies: Conglomerate
Lithofacies (Minor): Sandstone, Gravelly sandstone
Sedimentary structures: Trough cross-stratification, Imbrication
Paleocurrent: Northeast to Southwest

Thickness: 0 - 250 m
Upper limit: Conformity, partly interfingered (Furuyashiki Member)
Lower limit: Abut unconformity (Ryoke Metamorphic Rocks)

Moriya Formation
[ Upper ]
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Karasawagawa Member
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Kumakubo Member
'''''''/,,,,,,
Takabe Member
'''''''/,,,,,,
Ushiroyama Member
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Tanashigawa Member
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Furuyashiki Member
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Usuzawa 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: Hikageiri forest road - Katakura - Matsuo pass, Takato, Ina city, Nagano pref.

Makimoto et al. (1996) Geology of the Takato District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 6p.)