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.


Read the full book (PDF, 12MB)


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