Bedrock Geology of Grand Detour Quadrangle, Ogle and Lee Counties, Illinois
Two 30" × 35" map sheets; sheet 1 contains map and legends; sheet 2 includes descriptive stratigraphic column, cross section, descriptive text, and 2 figures.
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