Tando Tuff Breccia

Type locality: Tando, Misasa city, Tohaku county, Tottori prefecture
Volcanic rocks
Pliocene

Lithofacies: Calc-alkaline
Lithofacies (Upper): Andesite lapilli tuff
Lithofacies (Upper, Minor): Tuff breccia, Tuff, Mudstone, Sandstone, Conglomerate
Lithofacies (Middle): Takashimizu Basalts
Lithofacies (Lower): Andesite tuff breccia
Lithofacies (Lower, Minor): Andesite lapilli tuff, Tuff, Sandstone
Lithofacies (Basal, Minor): Sandstone, Mudstone, Conglomerate

Thickness: 20 - 220 m
Thickness (Upper): ca. 20 m
Thickness (Middle): ca. 20 m
Thickness (Lower): 0 - 140 m or thicker
Upper limit: Unconformity (Nakatsugo Andesites, Happongoshi Andesite Lava, Gorinbara Basalt Lava)
Lower limit: Bottom of the lapilli tuff bed overlying diatomite mudstone
Lower limit: Interfingered (Takashimizu Basalts, Iwabuchi Basalt Lava), Conformity (Ningyotoge Formation), Unconformity (Granite, Yodo Basalt Lava)

southern Kurayoshi, Tottori pref.
[ Upper ]
~~~~~~~~~~~~~~
Nakatsugo Andesites
--------------
Tando Tuff Breccia
--------------
Takashimizu Basalts
--------------
Ningyotoge Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Tando - Namariyama, Misasa city, Tohaku county, Tottori pref.; Nakatsugo - Onbara, Kagamino city, Tamata county, Oakayam pref.

Yamada (1966) Chizu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 69p. (in Japanese with English abstract 11p.)
Yamada (1961) Okutsu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 51p. (in Japanese with English abstract 9p.)
Murayama and Ozawa (1961) Aoya & Kurayoshi, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 71p. (in Japanese with English abstract 5p.)