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.

Cataclysms on the Columbia: A Layman's Guide to the Features Produced by the Catastrophic Bretz Flood in the Pacific Northwest

Science & Math

Allen, John Eliot

Burns, Marjorie

Earth Sciences

Timber Pr

Cataclysms on the Columbia: A Layman's Guide to the Features Produced by the Catastrophic Bretz Floods in the Pacific Northwest (Scenic Trips to the)

Crafts, Hobbies & Home

Sargent, Sam C.

Gardening & Landscape Design

* 90 hikes, many off the beaten path * Appendices list hikes by rock age, collectible minerals or fossils present, and more; plus a new illustrated section on rock identification Visit tropical islands sequestered in the Wallowa Mountains, ancient volcanoes in the depths of Hells Canyon, and Cascade valleys carved by glaciers towering far above your head. All it takes is a little imagination (yours) and geologic savvy (provided by a professional). Aided by photos and illustrations, unlock the mysteries of the landscape through which you walk. Professional guidebook writer, Ellen Morris Bishop, Ph.D., also also a geologist and written numerous books on geology and teaches geology at Lewis and Clark College in Portland.

Hiking Oregon's Geology (Hiking Geology)

Bishop, Ellen Morris

MOUNTAINEERS BOOKS+

The Magnificent Gateway: A Layman's Guide to the Geology of the Columbia River Gorge (Scenic Trips to the Northwest's Geologic Past ; No. 1)

Bin Rock and Dump Rock: Recollections of a Geologist : With Ten Years of Non-Geological Essays

Hells Canyon Pub

Cataclysms on the Columbia tells two stories. One follows geological research that challenged the scientific paradigm of the early 20th century, and the other chronicles the result of that research: the discovery of powerful prehistoric floods that shaped the Pacific Northwest. The cataclysms at the end of the last Ice Age left a scabland of buttes, dry falls, and rocky gorges, but it took the detective work of geologist J Harlen Bretz to prove it to the world. His lifetime of research and unshakeable belief changed geology forever.

Cataclysms on the Columbia: The Great Missoula Floods (OpenBook)

History

Burns, Scott

Americas

Ooligan Press

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Books by Allen, John Eliot