Roadside Geology of Parts of Walla Walla, Franklin, and Columbia Counties, Washington
Robert J. Carson and Kevin R. Pogue
Washington State Department of Natural Resources, Division of Geology and Earth Resources: January 1996
This field trip guide covers the geology of some of the areas affected by two catastrophic events: enormous basaltic lava flows of about 17 million years ago and giant glacier outburst floods from about 15,300 years ago.
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If you want to explore further
Roadside geology of Washington
David D. Alt and Donald W Hyndman
Mountain Press Publishing Company: 1984
Geologic field trips in the Pacific Northwest
Edited by Donald A. Swanson and Ralph A. Haugerud
Department of Geological Sciences, University of Washington: 1994
Washington’s channeled scabland
J. Harlan Bretz
Washington State Printing Plant: 1959
Introduction to Washington geology and resources
Charles D. Campbell
Washington State Printing Plant: 1962
Geological history of Eastern Washington
Charles A. Stewart
1922