The following links are for OER products created by others
|Physical Geology by Karla Panchuk|
This text builds upon the work of Steven Earle (see below) with a number of improvements on imagery.
|An Introduction to Physical Geology by Chris Johnson, Matthew D. Affolter, Paul Inkenbrandt, and Cam Mosher|
An OER textbook for introductory geology developed by a team at Salt Lake Community College
|Physical Geology 2nd Edition by Steven Earle|
An OER textbook for introductory geology developed by faculty from Earth science departments at universities and colleges across British Columbia and elsewhere.