How to search the Digital Archive to find more material
How to Use Arizona Archive Online to find more primary source material housed in Special Collections and Archives
The Cline Library, Special Collections and Archives houses a great many unique, primary source materials dealing with the human and natural history of the Colorado Plateau. Below are some links to material in SCA's Digital Archives from a wide array of collections touching broadly on the subject of Geology and Arizona. Much of the material linked below comes from a wide array of sources and people including outdoor enthusiasts, river-runners, faculty, and members of the scientific community.
Documents, images, and reports: 
Geology in Arizona by Place
Arizona, Grand Canyon, San Francisco Peaks, Colorado River
Geology of Arizona-
Canyons, Mountains, Rivers, Rock Formations, Valleys, Volcanoes
Activities-
Climbing, Hiking, Mining, Scientific Expeditions
Oral Histories that include Geology-
Moving images, Sound Recordings
Exhibits-
Spectacle and Splendor: the 100 Year Journey of Grand Canyon National Park
100 Years Grand (with ASU, and the Grand Canyon National Park Museum)
Repeat Photography Site for the James J. Hanks Photographs, 1927-1928
Other Recourses-
United States Geological Survey, Arizona