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Cataclysms on the Columbia
by John Allen Marjorie Burns Samuel C. Sargent
- NATURAL HISTORY
- 221 PAGES
An engaging investigation of geologic history, framed as a detective story, this well written account of the Bretz Floods both explainsthe glacial activity that shaped the Columbia River Gorge at the end of the last Ice Age and tells the story of geologist J Harlen Bretz.