Roadside Geology of Washington

Roadside Geology of Washington, by David D. Alt and Donald W. Hyndman. The story of Washington geology is a matter of getting the pieces of the state together. As it moved west, the North American continent collected scraps of continental and oceanic crust once widely scattered over the vast emptiness of the eastern Pacific, and assembled them into the geologic mosaic that is Washington. This book identifies the pieces of Washington, points out the seams between them, and tells how and when they got to where we know them now.