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Iwashita Andesites (Taneda et al., 1957) Miyachi and Miyachi, 1975

Invalid synonym: Yaeyama Lava III, Uranona Pyroxene Andesites, Sanpozukayama Andesites, Nashikino Pyroclastic Rock

• Volcanic rocks
• Pliocene

• Lithofacies: Hornblende-bearing two-pyroxene andesite
• Lithofacies: Lava, Tuff breccia

• Thickness: ca. 150 m
• Upper limit: Unconformity (Nakadake Pyroclastic Flow Deposit, Yaeyama Lava I)
• Lower limit: Unconformity (Koriyama Formation, Nasubida Andesites)

• Distribution: Iwashita - Ohira - Koyoke, Hiwaki town, Satsumasendai city, Kagoshima pref.; Nashinoki - Shiake, Koriyama town, Kagoshma city, Kagoshima pref.; Mount Sanpozuka - Mount Otani - Hiwaki river - Kiyoura, Iriki town, Satsumasendai city, Kagoshima pref.

• Uchimura et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.3, pp.95-112 DOI