Bob Carson, a professor of geology at Whitman College, will sign copies of his newly released book at 4 p.m. Friday at Whitman College Bookstore, 280 Boyer Ave.
"East of Yellowstone" is a new geology guidebook that invites the curious into the dramatic geologic beauty of Clarks Fork Valley and nearby Beartooth and Absaroka mountains and Bighorn Basin of Wyoming and Montana.
Published this month by Keokee Books, it interprets geology just outside the world's first national park.
Carson guides readers through the natural theaters and interprets the geologic story of the terrain east of Yellowstone National Park. Five road logs steer readers over the Beartooth and Chief Joseph highways and adjoining roads to vistas of rugged mountains and scenic valleys. He outlines the history behind the enigmatic Heart Mountain detachment, Absaroka volcanics and Pleistocene glaciation.
"East of Yellowstone" is more than a guidebook. Its full-color, large format with photography by Duane Scroggins sets it apart as a Greater Yellowstone art book. Its 184 pages contain 138 illustrations, including photographs, seven geologic maps and 10 topographic maps with trails outlined.
Carson is the Phillips Professor of geology and environmental studies at Whitman. A whitewater guide and a member of the American Alpine Club, he has led field trips in Africa, Eurasia, South America and throughout North America. His other books include "Where the Great River Bends" and "Hiking Guide to Washington Geology."
"East of Yellowstone" retails for $25. For more details, contact the Whitman College Bookstore, 509-527-5274.