Dr. Bob's Geologic Time Page
http://web.archive.org/web/20080509123256/http://www.ux1.eiu.edu/~rbjorstad/geoltime.html

Bob Jorstad, Eastern Illinois University, Department of Geology and Geography, Eastern Illinois University

This is a collection of mnemonic devices to aid in learning the various periods and epochs of the geologic time scale which the author has assembled from a variety of contributors. Contributor email addresses are included. There are also mnemonic devices for Moh's hardness scale and for stratigraphic sequences from the Canyonlands-San Juan River area and the Grand Canyon.

This description of a site outside SERC has not been vetted by SERC staff and may be incomplete or incorrect. If you have information we can use to flesh out or correct this record let us know.

This resource originally cataloged at:

This resource is referenced here:

• Starting Point-Teaching Entry Level Geoscience:Using an Earth System Approach: Earth history and time

Grade Level: College Lower (13-14), High School (9-12), Middle (6-8)