Hinokigawa Formation

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Hinokigawa Formation Kitamura et al., 1959

Type locality: Hinokigawa river, Kawauchi town, Mutsu city, Aomori prefecture
Volcanic rocks
Miocene
Correlation: Upper Sai Formation
Correlation (Upper): Yunokawa Formation

Sedimentary facies: Marine
Lithofacies: Dacitic - rhyolitic volcaniclastic rocks, Lava
Lithofacies (Minor): Andesite - basalt lava, Volcaniclastic rocks, Shale

Thickness: 420 - 730 m
Upper limit: Unconformity (Yunokawa Formation, Yunokogawa Formation, Hantarozawa Welded Tuff, Ohodake Andesites), Conformity (Kozawa Formation)
Lower limit: Conformity (Kinpachizawa Formation)

Hinokigawa Formation
[ Upper ]
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Takiyama facies / Hinokigawa facies
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Ushidaki facies / Otokogawa facies
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[ Lower ]

northern Mutsu-Kawauchi
[ Upper ]
~~~~~~~~~~~~~~
Yunomatagawa Formaiton
~~~~~~~~~~~~~~
Yunokogawa Formation
~~~~~~~~~~~~~~
Yunokawa Formation
~~~~~~~~~~~~~~
Hinokigawa Formation
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Kinpachizawa Formation
~~~~~~~~~~~~~~
[ Lower ]

southern Mutsu-Kawauchi
[ Upper ]
~~~~~~~~~~~~~~
Wakinosawa Andesites
'''''''/,,,,,,
Kozawa Formation
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Hinokigawa Formation
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Kinpachizawa Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Hinokigawa river - Nagahama - Washiro creek, Kawauchi town, Mutsu city, Aomori pref.; Anama, Wakinosawa, Mutsu city, Aomori pref.
Fossils: Sponge (Sagarites => Makiyama chitanii), Foraminifera (Martinotiella communis, Haplophragmoicles sp., Spirosigmoillinella compressa, Bathysiphon sp.)

Uemura (1976) Geology of the Wakinosawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 14p. (in Japanese with English abstract 3p.)
Uemura (1975) Geology of the Mutsukawauchi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 39p. (in Japanese with English abstract 7p.)