Download or read book Canyons, Revised Edition written by Erik Hanson and published by Infobase Holdings, Inc. This book was released on 2019-06-01 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Canyons, Revised Edition chronicles the origins, history, and structure of the world's most breathtaking gorges, from North America's spectacular Grand Canyon to western Australia's exciting Windjana Gorge, where the Leonard River snakes its way through an ancient barrier reef. This eBook also discusses tectonic activity, undersea canyons, liquid rock, and pinpoints recent scientific studies and modern-day ecological challenges.