Tengutai Tephra Group

[ Top ] [ Japanese ]

Tengutai Tephra Group (Nakagawa, 1961) Kudo, 2005

Type locality: Barakubo, Towada city, Aomori prefecture
Tephra
late Pleistocene (ca. 400 - 110 ka)

Lithofacies: Andesitic - Dacitic

Source: Towada caldera, Hakkoda caldera

Lower limit: Unconformity (Takamoriyama Formation)

Tengutai Tephra Group
[ Upper ]
~~~~~~~~~~~~~~
Towada T-6 Tephra
~~~~~~~~~~~~~~
Towada T-5 Tephra
~~~~~~~~~~~~~~
Towada T-4 Tephra
~~~~~~~~~~~~~~
Towada T-3 Tephra
~~~~~~~~~~~~~~
Towada Nukamiso Tephra
~~~~~~~~~~~~~~
Hakkoda Shirobeta Tephra
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Kamikita plain, Aomori pref.
Distribution: Barakubo, Towada city, Aomori pref.; Kiyose - Ofudo, Towada city, Aomori pref.; Yagami - Horanai - Higuchiyama, Towada city, Aomori pref.

Kudo (2005) Geology of the Towada District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 79p. (in Japanese with English abstract 3p.)