Title Page Introduction What is a Geologic Map? What is a Geologic Map Used For? Why are Geologic Maps Important? Hasn’t It Been Mapped Before? What Do All Those Lines, Colors, and Symbols Represent? How is a Geologic Map Made? References
Societal Value of Geologic Maps, by Richard L. Bernknopf and others, 1991: U.S. Geological Survey Circular 1111, 53 p.
Geologic Mapping for the Future of Illinois, 1992: Illinois State Geological Survey Special Report 1, 49 p.
