Sheeted Clastic Dikes in the Megaflood Region
Here is a reprint of a short article I published in Northwest Geology v. 49 in August 2020. Northwest Geology is the annual volume of the...
Predicting liquefaction extent in the Yakima Fold Belt
Geologists have long debated how large of an earthquake Yakima Fold Belt faults can produce. Some claim these shallow (<10km), intraplate...
Evidence for Long Periods Between Fillings in Sheeted Clastic Dikes
Crosscutting relationships establish the order of events in a sheeted clastic dike exposed near TriCities, WA. 1.) Injection of yellow...
Ancient Flood Beds & Calcrete - White Bluffs, WA
An exotic clast-bearing conglomerate at White Bluffs Overlook was left by an ancient Ice Age flood. The post-Ringold unconformity appears...
Okanogan Valley Kame Terrace Mapping
The kame terraces of the Okanogan Valley are Alaskan in scale, but treeless and fully exposed. This extensive multi-level flight is...
Thanks a Lot, Erwin
In 1941, the talented cartographer Erwin Raisz of Harvard University's Institute of Geographical Exploration published a map showing the...
