Kazafukidake Pyroclastic Flow Deposits

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Kazafukidake Pyroclastic Flow Deposits Sakuyama, 1980

Tephra
Pleistocene

Sedimentary facies: Block-and-ash-flow deposit
Lithofacies: Augite hypersthene biotite quartz hornblende dacite - Olivine quartz hypersthene augite biotite hornblende andesite pyroclastic flow deposit

Thickness: 50 m or thicker
Lower limit: Interfingered (Kazafukidake Lava)

Younger stage
[ Upper ]
~~~~~~~~~~~~~~
Kazafukidake Pyroclastic Flow Deposits
'''''''/,,,,,,
Kazafukidake Lava
~~~~~~~~~~~~~~
Ebiradake Lava
~~~~~~~~~~~~~~
Norikuradake Lava
~~~~~~~~~~~~~~
[ Lower ]

Shirouma-Oike volcano
[ Upper ]
+__+__+__+__+_
Younger stage
~~~~~~~~~~~~~~
Older stage
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Mount Kazafukidake - Tsunzawa creek - Kitamatazawa creek, Otari city, Kitaazumi county, Nagano pref.

Nagamori et al. (2010) Geology of the Kotaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 130p. (in Japanese with English abstract 4p.)
Nakano et al. (2002) Geology of the Shiroumadake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 105p. (in Japanese with English abstract 5p.)