Akataki Lavas

[ Top ] [ Japanese ]

Akataki Lavas (Kaneko, 1988), Yanagisawa et al., 2000

Type locality: Akataki river, Maesaka, Nozawaonsen city, Shimotakai county, Nagano prefecture
Volcanic rocks
early Pleistocene
Intruded by: Augite hypersthene andesite dyke

Lithofacies: Augite hypersthene andesite lava

Thickness: 300 m or thicker
Upper limit: Unconformity (Kosugejinja Lava, Manbutsuiwa Tuff Breccia, Nakao Lava, Karanosawa Lava, Akadaredani Lavas)

Western basal volcanic rocks
[ Upper ]
~~~~~~~~~~~~~~
Akadaredani Lavas
~~~~~~~~~~~~~~
Akataki Lavas
~~~~~~~~~~~~~~
[ Lower ]

Kenashi volcano
[ Upper ]
--------------
Kenashiyama volcano
~~~~~~~~~~~~~~
Western basal volcanic rocks / Mizuo-Oiriyama volcano
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Akataki river, Maesaka, Nozawaonsen city, Shimotakai county, Nagano pref.

Yanagisawa et al. (2000) Geology of the Iiyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 144p. (in Japanese with English abstract 6p.)