Yamazaki Debris Avalanche Deposit

Yamazaki Debris Avalanche Deposit (Yoshida et al., 1969) Sakaguchi, 1995

Volcanic rocks
Sector collapse deposit
Pleistocene

Lithofacies: Andesite
Lithofacies: Breccia

Thickness: 5 - 40 m or thicker

Oshosan products
[ Upper ]
~~~~~~~~~~~~~~
Sennyodaira Lava
~~~~~~~~~~~~~~
Maegatake Lava
~~~~~~~~~~~~~~
Yamazaki Debris Avalanche Deposit
~~~~~~~~~~~~~~
Oshosan Lava
~~~~~~~~~~~~~~
Otaki Lava
~~~~~~~~~~~~~~
Akagidaira Lava
~~~~~~~~~~~~~~
Maegatakenishi Lava
~~~~~~~~~~~~~~
Choshigataki Lava
~~~~~~~~~~~~~~
Yakushidake Lava
~~~~~~~~~~~~~~
Choshigataki Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
Dake Lava
~~~~~~~~~~~~~~
Nagasaka Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
Endogataki Lava
~~~~~~~~~~~~~~
[ Lower ]

Adatara volcano
[ Upper ]
+__+__+__+__+_
Minowasan-Adatarayama products
~~~~~~~~~~~~~~
Oshosan products
~~~~~~~~~~~~~~
Sogodai Lava
~~~~~~~~~~~~~~
Numajiri Pyroclastic Flow Deposit
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: southeastern flank of Mount Oshoyama, Koriyama city, Fukushima pref.; Tamanoi, Otama city, Adachi county, Fukushima pref.; Harase, Nihonmatsu city, Fukushima pref.

Sakaguchi (1995) Geology of the Nihonmatsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 4p.)