Sancho Lava

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Sancho Lava

Volcanic rocks
Pleistocene

Lithofacies: Hornblende orthopyroxene clinopyroxene andesite lava

Source: summit of Mount Tateshinayama
Thickness: ca. 230 m

Tateshinayama Lava
[ Upper ]
~~~~~~~~~~~~~~
Sancho Lava
~~~~~~~~~~~~~~
Sakuratani Lava
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Minami Lava
~~~~~~~~~~~~~~
Bangoya Lava
~~~~~~~~~~~~~~
Nishi Lava
~~~~~~~~~~~~~~
Tenshojihara Lava
~~~~~~~~~~~~~~
[ Lower ]

Younger period (Mount Tateshina)
[ Upper ]
~~~~~~~~~~~~~~
Tateshinayama Lava
~~~~~~~~~~~~~~
2,161m-ho Lava
~~~~~~~~~~~~~~
Suribachiyama Lava
~~~~~~~~~~~~~~
[ Lower ]

Yatsugatake volcano
[ Upper ]
+__+__+__+__+_
Younger period
~~~~~~~~~~~~~~
Older period
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: summit of Mount Tateshinayama, Chino city - Tateshina city, Kitasaku county, Nagano pref.

Kawachi (1974) Geology of the Tateshinayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 5p.)