[ Top ] [ Japanese ]

Ishikoshi Andesite Matsuno, 1967

• Type locality: Ishikoshi town, Toyoma city, Miyagi prefecture
• Volcanic rocks
• early Miocene
• Correlation: Inase Formation, Nonodake Pyroclastic Member

• Lithofacies: Dacite lava, Andesite lava, Andesitic volcanic breccia

• Upper limit: Unconformity (Tatsunokuchi Formation), Abut unconformity (Kazawa Formation)

• Distribution: Ishikoshi town - Uwanuma - Ishinomori, Toyoma city, Miyagi pref.; Hanaizumi town, Ichinoseki city, Iwate pref.; Miroku temple, Nakada town, Tome city, Miyagi pref.

• Takeuchi and Kaneko (1996) Geology of the Shizugawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 5p.)
• Matsuno (1967) Geology of the Wakayanagi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 24p. (in Japanese with English abstract 5p.)