Takaidani Lava

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Takaidani Lava Tsukui, 1984

Type locality: Takaidani valley, Yodoe town, Yonago city, Tottori prefecture
Volcanic rocks
middle Pleistocene (0.51, 0.5 Ma, K-Ar)

Lithofacies: Dacite lava
Sedimentary structures: Columnar joints, Platy joints

Thickness: 200 m or thicker
Upper limit: Unconformity (Nabeyama Pyroclastic Cone, Koreisan Lava Dome)
Lower limit: Unconformity (Hongu Body)

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: Takaidani valley - Inayoshi - Mount Koreisan, 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.)