Cataclysms on the Columbia by Sam Sargent, John Eliot Allen, Marjorie Burns

Cataclysms on the Columbia

Sam Sargent, John Eliot Allen, Marjorie Burns

213 pages first pub 1986 (editions)

nonfiction history science informative medium-paced

Description

For years the formation of the Grand Coulee remained a mystery until J Harlen Bretz set out to prove that the Columbia River basin was the site of huge floods 15,000 years ago that covered 16,000 square miles to depths of hundreds of feet & cr...

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