The rock cycle is an ongoing process in which rock, driven by tectonic processes such as volcanoes and earthquakes, the surface processes of weathering and erosion, and compaction, is created, destroyed, and recycled....

This identification key has been designed to assist teachers, students, or collectors in the identification of rocks. It consists of a series of "yes/no/then go to" questions that pertain to observations of structure,...

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.

Designed as part of the Professional Development for Geoscience Faculty series at Carleton College, this particular set of resources is designed for those teaching students about petrology. For those who might be...

The Natural Arch and Bridge Society (NABS) was formed to support the interests of both amateur arch enthusiasts and serious researchers of natural arches and bridges alike. The website provides a variety of information...