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Nabeyama Andesite

• Volcanic rocks
• Miocene
• Intruded in: Hata Tuffaceous Sandstone, Kibitanigawa Tuff, Shintachi Formation

• Sedimentary facies: Small-scale lava dome, Dikes
• Lithofacies: Orthopyroxene clinopyroxene olivine andesite

• Distribution (Width, Dike): 2 - 20 m
• Upper limit: Unconformity (Sennan Formation, Osaka Group)
• Lower limit: Unconformity (Older Ryoke Granitoids)

• Distribution: Mount Nabeyama, Kishiwada city, Osaka pref.; Kogigawa river, Hata, Kaizuka city, Osaka pref.; Izumisano city, Osaka pref.; Mount Kasayama, Sennan city, Osaka pref.

• Itihara et al. (1986) Geology of the Kishiwada District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 148p. (in Japanese with English abstract 7p.)