Kojidani Volcanic Products

Kojidani Volcanic Products (Tsunozu Research Group, 1983) Kano et al., 2001

Invalid synonym: Kojidani Tuff Breccia

Type locality: Kojidani, Nima town, Oda city, Shimane prefecture
Volcanic rocks
Pliocene (ca. 3.5 - 2.0 Ma)
Intruded in: Kuri Formation

Sedimentary facies: Volcanic vent-fill deposits, Block and ash flow deposits
Lithofacies: Hornblende-bearing quartz biotite dacite lithic tuff breccia, Lapilli tuff

Source: Kojidani valley
Thickness: ca. 7 - 80 m
Distribution (Diameter): 500 - 800 m
Host: Tsunozu Formation
Upper limit: Conformity (Kanmurigawa Lava)
Lower limit: Unconformity (Kuri Formation)

Oe-Takayama Volcanic Products
[ Upper ]
~~~~~~~~~~~~~~
Oe-Takayama Lava
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Senyama Volcanic Products
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Mikusu Block-and-Ash Flow Deposits
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Yataki Ash Flow Deposits
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Kawakami Block-and-Ash Flow Deposits
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Kakida Ash Flow Deposits
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Oe Ash Flow Deposits
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Kanmurigawa Lava
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Kojidani Volcanic Products
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Nishita - Kojidani, Oda city, Shimane pref.

Kano et al. (2001) Geology of the Yunotsu and Gotsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 129p. (in Japanese with English abstract 5p.)