Orido Tuff Member

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Orido Tuff Member (Sumi and Nozawa, 1973)

Type locality: Orido - Geda, Kamiichi city, Nakaniikawa county, Toyama prefecture
Volcanic rocks
Miocene
Interfingered: Furukakuma Sandstone Member
Intruded by: Dacite dikes

Lithofacies: Lapilli tuff, Tuff, Tuffaceous sandstone, Tuffaceous mudstone
Lithofacies (Minor): Andesite tuff breccia, Pyroclastic flow pumice tuff, Andesite volcanic breccia
Lithofacies (Basal): Conglomerate

Thickness: A few dozen - 300 m or thicker
Lower limit: Unconformity (Iwaine Formation, Futomiyama Group)

Fukuhira Formation
[ Upper ]
~~~~~~~~~~~~~~
Kosuganuma Volcanic Breccia Member
--------------
Gomado Tuff Breccia Member
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Hirakidani Pumice Tuff Member
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Jogahirayama Dacite Member
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Kadogawa Andesite Member
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Tokurayama Volcanic Breccia Member
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Mekka Pumiceous Tuff Member
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Orido Tuff Member
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Furukakuma Sandstone Member
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[ Lower ]

Yatsuo Group (Uozu, Toyama pref.)
[ Upper ]
~~~~~~~~~~~~~~
Shakusenji Formation
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Tsubono Formation
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Oiwa Tuff Member
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Fukuhira Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Orido - Geda - Inamura - Nakamura - Minowa - Higashitane, Kamiichi city, Nakaniikawa county, Toyama pref.; Hachi - Kawaharanami - Furukakuma, Uozu city, Toyama pref.

Sumi and Nozawa (1973) Geology of the Uozu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 104p. (in Japanese with English abstract 5p.)