This site was created by John Butler of the University of Houston. Included here are lecture materials on sedimentary rocks and processes with an online quiz, internet resources and a virtual trip to the Grand Canyon. ...

This site from James Madison University focuses on sedimentary rocks. It includes many useful links, including an introduction, encyclopedia, classification and identification pages, and more.

Educators, students, and anyone interested in brushing up their earth science knowledge may want to check out this resource on the rock cycle created by the Geological Society of London. The main page features a colorful...