Geologic Map of the Goreville Quadrangle, Johnson and Williamson Counties, Illinois

38" × 31" single map sheet; includes map, legend, descriptive text, stratigraphic column, and cross section
GMDM GIS download contains ArcGIS geodatabase and metadata, ArcReader map document, and published map in PDF format (GIS file contents).
Purchase this map online through Shop ISGS*, or contact the Sales and Information Office for more information.
*excludes EDMAP series and student maps