Baba Welded Tuff

[ Top ] [ Japanese ]

Baba Welded Tuff

Type locality: Baba - Mount Tenguyama, Makioka town, Yamanashi city, Yamanashi prefecture
Tephra
late Miocene
Intruded by: Kogarasu Granodiorite

Sedimentary facies: Terrestrial
Lithofacies: Rhyolitic pyroclastic flow deposit
Lithofacies: Welded tuff

Thickness: 200 m or thicker
Distribution (Width): 1 km
Distribution (Length): 2.5 km
Lower limit: Abut unconformity (Kofu Granodioritic Complex)

Konarayama Volcanic Rock
[ Upper ]
--------------
Odaira Welded Tuff
--------------
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: Baba - Mount Tenguyama - Mizukuchi, Makioka town, 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.)