Cataclysms on the Columbia

By (author): "Sam Sargent, Marjorie Burns, John Eliot Allen"
Genres:Nonfiction books  Science books  History books  Nature books  Geology books  
Publish Date: June 1st 1986
Cataclysms on the Columbia
ISBN0881922153
ISBN139780881922158
AsinCataclysms on the Columbia
The formation of the Grand Coulee remained a mystery for many years, until J Harlen Bretz proved that the Columbia River basin was the site of huge floods 15,000 years ago that created the landscape we see today.