Nabeyama Pyroclastic Cone

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Nabeyama Pyroclastic Cone (Tsukui, 1984) Shikano et al., 2025

Type locality: Nabeyama - Mount Koreisan, Daisen city, Saihaku county, Tottori prefecture
Volcanic rocks
middle Pleistocene (0.45 Ma, K-Ar)

Sedimentary facies: Pyroclastic cone
Sedimentary facies: Block-and-ash-flow deposit
Lithofacies: Dacite tuff breccia

Distribution (Crater, Diameter): 3 - 4 km
Lower limit: Unconformity (Tsubokameyama Lava, Takaidani Lava)

Older volcano (Flank volcano)
[ Upper ]
~~~~~~~~~~~~~~
Koreisan Lava Dome
~~~~~~~~~~~~~~
Nabeyama Pyroclastic Cone
~~~~~~~~~~~~~~
Uenohara Lava
~~~~~~~~~~~~~~
Takaidani Lava
~~~~~~~~~~~~~~
Tsubokameyama Lava
~~~~~~~~~~~~~~
[ Lower ]

Daisen volcano
[ Upper ]
+__+__+__+__+_
Younger volcano
~~~~~~~~~~~~~~
Older volcano
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Nabeyama - Mount Koreisan - Akima - Nagata, Daisen city, Saihaku county, Tottori pref.; Takaidani, Yonago city, Tottori pref.

Kano et al. (2025) Geology of the Yonago District (2nd Ed.), Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 84p. (in Japanese with English abstract 4p.)