Here is a completely new version of the leading book on the geology of the Grand Canyon. Co-published with the Museum of Northern Arizona Press, the book incorporates the most recent discoveries and interpretations of the origin and history of the canyon. It offers a splendid, colorful survey of one of nature's most magnificent creations, while serving as a unique introduction to the methods and discoveries of geological science. The contributing authors are acknowledged experts in the fields of stratigraphy, paleontology, structural geology, geomorphology, volcanism, and seismology. Their discussions of individual rock formations offer new information on the geographic distribution of outcrops in the canyon, their lithology and stratigraphy, paleontology, age and correlation with other rock units worldwide, and depositional history. A new chapter explores the hydrology and geomorphology of the Colorado River. Fully illustrated with photographs and line drawings, this book will attract the attention of geologists and geology students, as well as general readers interested in acquiring an understanding of the geological history of this great natural wonder.