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
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- Email: IllinoisStateAcademyofScience@gmail.com
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