Amaikeyama Lava

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Amaikeyama Lava

Volcanic rocks
Lava dome
Pleistocene

Lithofacies: Hornblende hypersthene augite andesite lava

Source: Lake Amaike
Distribution (Height): ca. 90 m
Distribution (Diameter): ca. 500 m

Younger period (Mount Yokodake)
[ Upper ]
~~~~~~~~~~~~~~
Yokodake Lava
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Amaikeyama Lava
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[ Lower ]

Yatsugatake volcano
[ Upper ]
+__+__+__+__+_
Younger period
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Older period
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Mount Amaikeyama, Chino city - Sakuho city, Minamisaku county, Nagano pref.

Kawachi (1974) Geology of the Tateshinayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 5p.)