National Geologic Map Database
General Information
- Title: Cambrian and Lower Ordovician exposures in northern Illinois
- Author(s): Willman, H.B., and Templeton, J.S.
- Publishing Organization: Illinois Academy of Science
- Series and Number: Transactions v. 44 [p. 109-125]
- Publication Date: 1951
- Map Scale: 1:187,733
- Cross Section: Yes
- North Latitude: 42° 1' 55" N (42.0319)
- South Latitude: 41° 49' 9" N (41.8192)
- East Longitude: 89° 3' 14" W (-89.0539)
- West Longitude: 89° 24' 5" W (-89.4014)
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- Illinois Academy of Science
- 502 S Spring St.
- Springfield, IL 62706-5000
- Phone: (217) 782-6436
- Email: IllinoisStateAcademyofScience@gmail.com
* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.