Older stratovolcano

[ Top ] [ Japanese ]

Old stratovolcano

Type locality: Mount Tashiro, Akita prefecture
Stratovolcano
Volcanic rocks
Pleistocene

Lithofacies: Hypersthene series
Lithofacies: Augite hypersthene olivine andesite, Augite hypersthene andesite, Hornblende hypersthene augite andesite
Lithofacies: Lava, Tuff breccia, Tuff
Lithofacies (Minor): Agglomerate

Lower limit: Interfingered (Nenbazawa Formation)

Tashirodake volcano
[ Upper ]
+__+__+__+__+_
Itazawa Lahar deposit
~~~~~~~~~~~~~~
Hiratakizawa Lahar deposit
~~~~~~~~~~~~~~
Central cone
~~~~~~~~~~~~~~
Main body
~~~~~~~~~~~~~~
Older stratovolcano
'''''''/,,,,,,
[ Lower ]

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

Distribution: Mount Tashiro, Akita pref.
Distribution: Goshiki fall - Ito fall - Akakura creek, Tashiro, Kuzowara, Odate city, Akita pref.

Sumi et al. (1962) Dairakozan, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 51p. (in Japanese with English abstract 7p.)