Nirezawa Lava

[ Top ] [ Japanese ]

Nirezawa Lava

Volcanic rocks
middle - late Pleistocene

Lithofacies: Augite-bearing hypersthene andesite

Akagi volcano
[ Upper ]
~~~~~~~~~~~~~~
Mugikubo Lava
~~~~~~~~~~~~~~
Nirezawa Lava
~~~~~~~~~~~~~~
[ Lower ]

Akagi volcano
[ Upper ]
+__+__+__+__+_
Younger Stratovolcano
~~~~~~~~~~~~~~
Nashiki Debris Avalanche Deposit
~~~~~~~~~~~~~~
Older Stratovolcano
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Nirezawa, Kurohone town, Kiryu city, Gunma pref.

Kawata and Ozawa (1955) Ashio, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 57p. (in Japanese with English abstract 7p.)