(Invalid name) Mizoguchigawa Lava

Invalid synonym: Mizoguchizawa Lava

Type locality: Mizoguchigawa river, Otaki city, Kiso county, Nagano prefecture
Volcanic rocks
Composite stratovolcano
middle Pleistocene

Lithofacies: Augite hypersthene andesite lava (2 - 4 flow units)
Lithofacies (Minor): Pyroclastic rocks
Structures: Platy joint

Thickness (A unit): ca. 10 - 20 m
Lower limit: Unconformity (Suzugasawa Lava)

(Invalid) Older Ontake Volcanic Rocks
[ Upper ]
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(Invalid name) Mikasayama Lava = Mikasayama volcano
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(Invalid name) Mizoguchigawa Lava
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(Invalid name) Nunokawa Lava
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(Invalid name) Suzugasawa Lava
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(Invalid name) Sengendaru Lava = Nigorigo volcano
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(Invalid name) Kuragoehoara Lava = Tobu volcano
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(Invalid name) Makuiwagawa Lava
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(Invalid name) Hakotani Lava
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(Invalid name) Shiranunodani Lava
~~~~~~~~~~~~~~
(Invalid name) Tsuchiurazawa Lava = Tsuchiurazawa volcano
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[ Lower ]

Ontake volcano
[ Upper ]
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Younger Ontake Volcanic Rocks
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Older Ontake Volcanic Rocks
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Mizoguchigawa river - Suzugasawa creek - Shimokurosawa creek, Otaki city, Kiso county, Nagano pref.

Yamada and Kobayashi (1988) Geology of the Ontakesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 9p.)