How Old Is The Grand Canyon? by Wayne Ranney

Special National Park Service Evening Program
March 20th, 2014
Shrine of the Ages

Wayne Ranney, Geologist, Guide and Author of Carving Grand Canyon: Evidence, Theories, and Mystery presented a 1 hour illustrated presentation on the latest theories related to the geological history of Grand Canyon. Wayne first became interested in earth history while working as a backcountry ranger in the park from 1975 to 1978. Wayne has taught geology at Yavapai and Coconino Community Colleges and Northern Arizona University and leads numerous hiking and rafting expeditions throughout the Southwest for the Grand Canyon Field Institute and the Museum of Northern Arizona.

Видео How Old Is The Grand Canyon? by Wayne Ranney канала Grand Canyon Conservancy