Lower Karitasan Lava

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Lower Karitasan Lava Shimada, 1964

Possibly a part of Takai Volcanic Rocks

Type locality: Komaba, Takayama city, Kamitakai county, Nagano prefecture
Volcanic rocks
Pliocene
Intruded by: Iizunayama Lava

Lithofacies: Pyroxene andesite lava

Thickness: ca. 150 m
Upper limit: Unconformity (Middle Karitasan Lava)
Lower limit: Unconformity (Shiga Green Volcanic Rocks, Plutonic rocks)

Karitasan Volcanic Rocks
[ Upper ]
~~~~~~~~~~~~~~
Asahiyama Lava
~~~~~~~~~~~~~~
Iizunayama Lava
~~~~~~~~~~~~~~
Toyabasan Lava
~~~~~~~~~~~~~~
Upper Karitasan Lava
~~~~~~~~~~~~~~
Middle Karitasan Lava
~~~~~~~~~~~~~~
Lower Karitasan Lava
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Komaba - Masugata - Okuma pass, Takayama city, Kamitakai county, Nagano pref.; Okuma - Kitaokuma, Nakano city, 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.)