Haruna volcano

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Haruna volcano

Volcanic rocks
Stratovolcano, Lava domes Caldera
middle Pleistocene - Holocene

Sedimentary facies: Terrestrial
Lithofacies (Upper): Calc-alkaline
Lithofacies (Lower): Tholeiite
Lithofacies: Andesite

Distribution (Diameter): ca. 25 km
Distribution (Height): 1,449 m
Distribution (Caldera, East-West): ca. 3 km
Distribution (Caldera, South-North): ca. 2 km

Haruna volcano
[ Upper ]
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Younger Haruna volcano
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Older Haruna volcano
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[ Lower ]

Haruna volcano
[ Upper ]
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Haruna Tuff Breccia
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[ Lower ]

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

Distribution: Mount Haruna, Gunma pref.

Geshi and Takeuchi (2012) Geology of the Haruna San District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 79p. (in Japanese with English abstract 3p.)
Ota (1957) Kusatsu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 75p. (in Japanese with English abstract 8p.)