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Yamabe Group (Makiyama, 1937) Nishioka et al., 2001

• Coherent formation
• early - middle Miocene

• Lithofacies: Sandstone, Mudstone
• Lithofacies (Bottom): Conglomerate

• Thickness: 350 m or thicker
• Lower limit: Unconformity (Ryoke Metamorphic Rocks, Granite)

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

• Distribution: Haibara - Muro - Mukoji - Kaiba - Okubo - Nukai - Tenmadai, Uda city, Nara pref.; Hayama - Oyamato - Sogo - Minaminosho - Shiraishi - Sonotonohashi, Tsuge, Nara city, Nara pref.; Iu town - Nanmatsu - Mount Tsugenodake, Nara city, Nara pref.; Mount Mahirayama - Mount Kaigahirayama, Sakurai city, Nara pref.

• Sato et al. (2012) Jour. Geol. Soc. Japan, vol.118, Supplement, pp.53-69 DOI
• Nishioka et al. (2001) Geology of the Sakurai District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 141p. (in Japanese with English abstract 5p.)