Surficial Geologic Map, Colfax Quadrangle, McLean County, Illinois
23" × 29" map sheet; includes map and legend; map is available for download only. This map has not been reviewed by the Illinois State Geological Survey and does not necessarily conform to the usual style and standards for ISGS publications.
Purchase this map online through Shop ISGS*, or contact the Sales and Information Office for more information.
*excludes EDMAP series and student maps