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Dike

• Volcanic rocks
• late Miocene

• Sedimentary facies: Dike, Sill
• Lithofacies: Trachybasalt, Basaltic trachyandesite, Trachyandesite, Trachyte, Rhyolite

• Distribution: Radial (700 dikes or more)
• Distribution (Width): 10 cm - 200 m or wider
• Distribution (Length): Several m - 1 km

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

• Distribution: Oki county, Shimane pref.

• Chiba et al. (2000) Geology of the Urago District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 74p. (in Japanese with English abstract 3p.)