Old stage

Type locality: Tottori prefecture
Volcanic rocks
middle Pleistocene (10.2 - 0.27 Ma, K-Ar)

Sedimentary facies: Flank volcano, Lava dome, Lava, Debris flow
Lithofacies: Dacite tuff breccia

Upper limit: Unconformity (Young stage, , Mikkuriya Sand and Gravel Bed)

Old stage
?--?--?--?--?-
Tataradoyama volcano
?--?--?--?--?-
Tsubanukiyama Lava Dome, 0.96 Ma, K-Ar
?--?--?--?--?-
Koreisan Lava Dome
?--?--?--?--?-
Nabeyama Volcanic Rocks
?--?--?--?--?-
Senjosan Lava
?--?--?--?--?-
Iwabuseyama Lava
?--?--?--?--?-
Volcanic fan 6 deposit
?--?--?--?--?-

Old stage (Somma)
~~~~~~~~~~~~~~
Yahazugasen Lava
~~~~~~~~~~~~~~
Katsutagasen Lava
~~~~~~~~~~~~~~
Senjosan Lava
~~~~~~~~~~~~~~
Shiroyama Lava
~~~~~~~~~~~~~~
Yoshiwara Lava
~~~~~~~~~~~~~~

Daisen volcano
[ Upper ]
+__+__+__+__+_
Young stage
~~~~~~~~~~~~~~
Old stage
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Daisendaki fall - Obukiji - Mount Karasugasen - Jigokudani valley, Kotoura city, Tohaku county, Tottori pref.; Mitsukue, Kofu city, Hino county, Tottori pref.; Bessho - Iwaki, Kurayoshi city, Tottori pref.

Yamamoto (2017) Bull. Geol. Surv. Japan, vol.68, no.1, pp.1-16 DOI
Sawada et al. (2009) Jour. Geol. Soc. Japan, vol.115, Supplement, pp.51-70 DOI
Ota (1962) Akasaki & Daisen, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 37p. (in Japanese with English abstract 3p.)
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.)