Mitsudake Lava

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Mitsudake Lava

Volcanic rocks
Pleistocene

Lithofacies: Hypersthene augite andesite lava
Paleocurrent: East

Source: Flank Lake Nanatsuike, a crater of Mount Yokodake
Running distance: 850, 1,300 m
Upper limit: Unconformity (Odake Lava)
Lower limit: Unconformity (Chuokako Lava)

Sokukako volcanic products
[ Upper ]
~~~~~~~~~~~~~~
Hacchodaira Lava
~~~~~~~~~~~~~~
Odake Lava
~~~~~~~~~~~~~~
Mitsudake Lava
~~~~~~~~~~~~~~
Futagoike Lava
~~~~~~~~~~~~~~
Apronjo Lava
~~~~~~~~~~~~~~
Kutsushitajo Lava
~~~~~~~~~~~~~~
Pointjo Lava
~~~~~~~~~~~~~~
[ Lower ]

Yokodake Lava
[ Upper ]
~~~~~~~~~~~~~~
Sokukako volcanic products
~~~~~~~~~~~~~~
Chuokako Lava
~~~~~~~~~~~~~~
Yokodake Basal Lava
~~~~~~~~~~~~~~
[ Lower ]

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

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

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

Distribution: Mount Mitsudake, Sakuho city, Minamisaku county, Nagano pref.; Tengunoroji, Tateshina city, Kitasaku 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.)