Odaira Welded Tuff

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Odaira Welded Tuff

Type locality: Odaira, Mitomi, Yamanashi city, Yamanashi prefecture
Tephra
late Miocene (5.1 - 4.5 Ma, K-Ar)
Intruded by: Kogarasu Granodiorite

Sedimentary facies: Terrestrial
Lithofacies: Dacite welded tuff

Thickness: 1,000 m or thicker
Lower limit: Conformity (Kamiiwashita Lava), Unconformity (Kofu Granodioritic Complex)

Konarayama Volcanic Rock
[ Upper ]
--------------
Odaira Welded Tuff
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Kamiiwashita Lava
--------------
Tokuwa Volcanic Breccia
--------------
Nishibyodogawa Mudstone
--------------
Baba Welded Tuff
~~~~~~~~~~~~~~
[ Lower ]

Higashi-Yamanashi Volcano-Plutonic Complex
[ Young ]
~~~~~~~~~~~~~~
Kogarasu Granodiorite
~~~~~~~~~~~~~~
Konarayama Volcanic Rock
~~~~~~~~~~~~~~
[ Old ]

------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

Distribution: Odaira, Mitomi, Yamanashi city, Yamanashi pref.; Mount Tanayama - Mount Ogarasuyama - Kotokawa river - Tokuwagawa river - Mount Kabutoyama, Yamanashi city, Yamanashi pref.

Mimura et al. (1984) Geology of the Mitake-Shosenkyo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 61p. (in Japanese with English abstract 4p.)