The Great Basin Seafloor

Applying the fundamental principles of geology to the rocks of the Great Basin, we now have indisputable evidence that the region, however lofty and dry it may appear today, lay almost continuously beneath the waters of vanished oceans for more than 400million years. The bed of this ancient ocean, where enormous amounts of mud, muck, and sand accumulated during the immense period of inundation, is the subject of this book: it is the Sagebrush Seafloor--