]> GetMap Iowa_Geology http://mrdata.usgs.gov/cgi-bin/state/ia? Iowa_Geology Iowa_Geology EPSG:4267 EPSG:4269 EPSG:4326 EPSG:3395 EPSG:41001 Iowa_Lithology Iowa_Lithology USGS Web Mapping Service: Lithologic map derived from the Iowa State Geologic Map USGS Geology Lithology Geologic Lithologic EPSG:4267 EPSG:4269 EPSG:4326 EPSG:3395 EPSG:41001 Iowa_Contacts Iowa_Contacts USGS Web Mapping Service: Lithologic map contacts derived from the Iowa State Geologic Map USGS Geology Geologic contacts Geologic Lithologic EPSG:4267 EPSG:4269 EPSG:4326 EPSG:3395 EPSG:41001 Iowa_Age Iowa_Age USGS Web Mapping Service: Geologic age map derived from the Iowa State Geologic Map USGS Geology Geochronology Geologic Lithologic EPSG:4267 EPSG:4269 EPSG:4326 EPSG:3395 EPSG:41001