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Anamizu Formation

Invalid synonym: Kumabuchi Andesites

• Type locality: Kumabuchigawa river, Nanao city, Ishikawa prefecture
• Volcanic rocks
• Miocene
• Correlation: Iwaine Formation

• Sedimentary facies: Marine
• Lithofacies: Hypersthene augite andesite lava, Tuff breccia, Tuff
• Lithofacies (Minor): Sandstone, Mudstone

• Thickness: 200 m or thicker
• Upper limit: Unconformity (Tane Alternation Member, Mushizaki Mudstone Member, Suso Mudstone Member, Sekidosan Conglomerate Member, Kakefuda Sandstone Member, Otogawa Formation), Abut unconformity (Uwadana Mudstone Member, Akaura Sandstone Member)
• Lower limit: Unconformity (Sekidosan Granite, Koshiji Formation)

• Distribution: Kumabuchigawa river - Nadaura - southern part of Sakiyama peninsula, Nanao city, Ishikawa pref.; Mount Bijosan, Shiga city, Hakui county, Ishikawa pref.

• Imai et al. (1966) Geology of the Ochigata and Abugashima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 67p. (in Japanese with English abstract 4p.)
• Imai (1965) Koguchiseto, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 26p. (in Japanese with English abstract 4p.)