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(Invalid name) Ikuno Group
Yamamoto et al. (2002) pointed out that each formation are different small scale (less than 15 km in diameter) caldera-fill formations and can not be considered as a group.
- Sedimentary facies (Minor): Caldera wall-collapse deposits
- Lithofacies: Pyroclastic flow deposits
- Lithofacies (Minor): Debris avalanche deposits
- Distribution (Diameter, each caldera): 15 km or less
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Hyogo pref.
- Yamamoto et al. (2002) Geology of the Yamasaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 48p. (in Japanese with English abstract 4p.)