Dr. Ralph Dawes – “Glaciated Landscape Beneath the Okanogan Ice Sheet”

The Wenatchee Valley Erratics Chapter of the Ice Age Floods Institute’s next program will be on Tuesday, October 10 at 7:00 PM at the Wenatchee Valley Museum and Cultural Center, 127 South Mission St., Wenatchee.

Dr. Ralph Dawes, Professor of Earth Science, Wenatchee Valley College, will discuss the “Glaciated landscape that formed beneath the Okanogan Lobe of the Cordilleran Ice Sheet” in north central Washington. This area, including Douglas County north of Waterville and all of Okanogan County, was studied early in the last century by well-known geologists J Harlan Bretz, Richard Foster Flint, and Aaron C. Waters. How the ice sheet shaped the landscape underneath it was a source of controversy back then, and remains a subject of scientific debate today.

Dr. Dawes takes a four-part approach addressing the origin of the Okanogan landscape:

1. Read published geologic studies of the Okanogan Lobe and Cordilleran Ice Sheet;
2. learn latest theories of how ice sheets create landforms;
3. use current online map data; and
4. ground-truth to examine the evidence itself.

You can attend in-person at the Museum, or via Zoom link https://us02web.zoom.us/j/84520197937  Please sign in at 7:00 PM, October 10!