Bedrock Geology of Oregon Quadrangle, Ogle County, Illinois
Two 36" × 30" map sheets; sheet 1 contains map and legends; sheet 2 includes descriptive stratigraphic column, cross section, and descriptive text.
GIS Download (GeMS):
Purchase this map online through Shop ISGS*, or contact the Sales and Information Office for more information.
*excludes EDMAP series and student maps