Nabewarikawa Debris Avalanche Deposit

[ Top ] [ Japanese ]

Nabewarikawa Debris Avalanche Deposit Hayatsu, 1972

Type locality: Nabewari river, Nagano city, Nagano prefecture
Volcanic rocks
Stratovolcano
Pleistocene (43,980 yBP, ¹⁴C)

Lithofacies: Breccia, Volcanic ash

Distribution: ca. 10 km²
Thickness: ca. 100 m

Caldera stage
[ Upper ]
~~~~~~~~~~~~~~
Nabewarikawa Debris Avalanche Deposit
~~~~~~~~~~~~~~
[ Lower ]

3rd stage
[ Upper ]
~~~~~~~~~~~~~~
Central cone stage
~~~~~~~~~~~~~~
Caldera stage
~~~~~~~~~~~~~~
Stratovolcano stage
~~~~~~~~~~~~~~
[ Lower ]

Kurohime volcano
[ Upper ]
~~~~~~~~~~~~~~
3rd stage
~~~~~~~~~~~~~~
2nd stage
~~~~~~~~~~~~~~
1st stage
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Nabewari river, Nagano city, Nagano pref.; Korizawa river, Shinano city, Kamiminochi county, Nagano pref.; Suginosawa, Myoko city, Niigata pref.

Nagamori et al. (2003) Geology of the Togakushi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 109p. (in Japanese with English abstract 3p.)