Kanagatake Lava and Pyroclastic Rock

[ Top ] [ Japanese ]

Kanagatake Lava and Pyroclastic Rock

Type locality: ridge of Mount Yayagatake - Onnaiwa, Nirasaki city, Yamanashi prefecture
Volcanic rocks
early Pleistocene

Lithofacies: Pyroxene andesite lava (more than 15 flow units), Scoria tuff, Tuff breccia
Lithofacies (Minor, top and bottom of a lava flow): Clinker

Thickness: 400 m or thicker
Thickness (A unit): ca. 10 m
Running distance: 3 km

Kayagatake Stratovolcano
[ Upper ]
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Kanagatake Lava and Pyroclastic Rock
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Onnaiwa Lava
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Yoroiiwa Lava and Dike
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Yoroiiwa Pyroclastic Flow Deposit
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[ Lower ]

Kurofuji volcano
[ Upper ]
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Daimyojin Debris Deposit
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Kayagatake Stratovolcano
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Kurofuji Dikes
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Kurofuji Lava Domes
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Kurofuji Pyroclastic Flow Deposit
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[ Lower ]

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

Distribution: ridge of Mount Yayagatake - Onnaiwa, Nirasaki city, Yamanashi pref.

Mimura et al. (1984) Geology of the Mitake-Shosenkyo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 61p. (in Japanese with English abstract 4p.)