Tengudakejobu Lava

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Tengudakejobu Lava

Volcanic rocks
Pleistocene

Lithofacies (Upper): Hypersthene augite andesite lava
Lithofacies (Lower): Altered pyroclastic rocks
Lithofacies (Minor): Mudflow deposit

Thickness (Upper): 70 m or thicker
Thickness (Lower): 200 m

Tengudake Lava
[ Upper ]
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Suribachiike Lava
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Tengudakejobu Lava
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Tengudakechubu Lava
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Tengudakekabu Lava
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[ Lower ]

Northern Yatsugatake volcanoes (Mount Tengu)
[ Upper ]
+__+__+__+__+_
Tengudake Lava
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[ Lower ]

Yatsugatake volcanoes (North of Natsuzawa pass)
[ Upper ]
+__+__+__+__+_
Northern Yatsugatake volcanoes
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[ Lower ]

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

Distribution: Mount Nishitengudake - Mount Higashitengudake - Mount Neishidake - Karasawa creek - Happodai, Chino city, 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.)