Andalusia Member of Lithograph City Formation of Cedar Valley Group (IL,IA,MO)
late Middle Devonian to early Late Devonian (Givetian to Frasnian)
Type section: exposures at Buffalo quarry, 1.3 km north of Andalusia Slough in Mississippi River, in NW/4 NW/4 NE/4 sec. 33, T. 77 N., R. 2 E., Scott Co., IA (Bunker and others, 1986; Witzke and others, 1988).
Iowa shelf
Lincoln anticline
Illinois basin
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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