Sand injectites and other soft sediment deformation features formed by megafloods

  • Friday, February 14, 2025
  • 7:30 PM - 9:00 PM
  • Hybrid event: PSU Cramer Hall Rm 53 and via Zoom

Sand injectites and other soft sediment deformation features formed by megafloods in Oregon, Washington, and Idaho

The Missoula Floods left behind thousands of curious soft-sediment deformation features in their wake. Join us for a photographic tour of these striking features which include sheeted sand dikes, T-shaped mud squirts, flame structures, and rubbly injectites. We will journey down the entire length of the floodway - from Priest Lake to Portland - discovering along the way where each type of feature formed and the geologic reasons why. 

Register for the Zoom event here

Speaker Bio:


Skye Cooley grew up on Samish Island in northern Puget Sound. He received degrees in Geology from Whitman College (BA) and University of Wyoming (MS). He is a field geologist interested in ancient soils, geomorphology, and the interplay between tectonics, topography, and climate. He is currently mapping the glacial deposits in the Mission Valley, MT. He is employed as the Hydrologist for the federally-owned Flathead Indian Irrigation Project in Mission Valley, MT.