Komadotoge Pyroclastic Flow Deposit

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Komadotoge Pyroclastic Flow Deposit

Invalid synonym: Komadotoge Formation

Tephra
Miocene (7.3 Ma, K-Ar)

Sedimentary facies: Terrestrial
Lithofacies: Pyroclastic flow deposit
Lithofacies: Hornblende biotite rhyolite
Lithofacies: Lapilli tuff

Source: Okukinu caldera
Host: Minami-aizu Formation
Thickness: 200 m or thicker

Minami-aizu Formation
[ Upper ]
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Komadotoge Pyroclastic Flow Deposit
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Fluvial deposit
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Odoshimazawa Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
[ Lower ]

Miyashita, Fukushima pref.
[ Upper ]
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Minami-aizu Formation
~~~~~~~~~~~~~~
Matsuzakatoge Formation
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Fuzawa Formation
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Takizawagawa Formation
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[ Lower ]

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

Distribution: Fukushima pref.

Yamamoto and Komazawa (2004) Geology of the Miyashita District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 71p. (in Japanese with English abstract 5p.)