Surficial Geology of Grantfork Quadrangle, Madison County, Illinois
Two 36" × 30" map sheets; sheet 1 contains map and legends; sheet 2 includes descriptive text with figures and table, and 2 cross sections
2006; originally 2005
GIS Download (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