Web Geological Time Machine
Recipes for Salt Maps
Images of Salt Maps
Fortey, Richard. Earth: An Intimate History. New York: Vintage, 2005.
Gohau, Gabriel, Carozzi, Albert V. and Carozzzi, Marqueritye. A History of Geology. Piscataway: The State University of Rutgers, 1990.
Hartmann, William K. The History of Earth: An Illustrated Chronicle of an Evolving Planet. New York: Workman Publishing, 1991.
MacDougall, J. D. A Short History of Planet Earth: Mountains, Mammals, Fire, and Ice. Hoboken: John Wiley & Sons, Inc., 1996.
Credits: This lesson was written by Debra L. Clark, Kent State University