But to be a geologist is to inhabit multiple times, through many different scenes of earth history and partially vanished landscapes. Wayne Ranney is a geologist, river and trail guide, author and retired professor of geology living in Flagstaff. He is a well-respected author of numerous award-winning books, including "Ancient Landscapes of the Colorado Plateau" and "Carving Grand Canyon." The author wishes to thank Richard Holm, who knows a great deal about lava flows in the Flagstaff region and who initially found evidence for the cliff debris that lies beneath McMillan Mesa. Submit questions for the Ask a Ranger to askaranger@gmail.com.

Source: Daily Sun June 25, 2020 18:22 UTC