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

Cataclysms on the Columbia

Sam Sargent, Marjorie Burns, John Eliot Allen

213 pages first pub 1986 (editions)

nonfiction history science informative medium-paced
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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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