Mitsugoyama Lava

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Mitsugoyama Lava (Saito, 1955)

Type locality: Mount Mitsugoyama, Yamanouchi city - Kijimadaira city, Shimoakai county, Nagano prefecture
Volcanic rocks
Lava dome
Pleistocene

Lithofacies: Pyroxene andesite lava

Distribution (Diameter): 900 m
Thickness: 300 m or thicker

Kosha volcano
[ Upper ]
+__+__+__+__+_
Iimoriyama Lava
~~~~~~~~~~~~~~
Kosha Pumice Flow Deposit
~~~~~~~~~~~~~~
Mitsugoyama Lava
~~~~~~~~~~~~~~
Kosha Lithic Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
Koshashukazantai Lava
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Mount Mitsugoyama, Yamanouchi city - Kijimadaira city, Shimoakai county, Nagano pref.

Akahane et al. (1992) Geology of the Nakano District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 106p. (in Japanese with English abstract 4p.)