Flood and Slide Deformed Deposits - Priest River, ID
The Ice Age floods inundated the southern portion of the Priest River Valley in northern Idaho, though this area is rarely mentioned in...
Thanks a Lot, Erwin
In 1941, the talented cartographer Erwin Raisz of Harvard University's Institute of Geographical Exploration published a map showing the...
Are dates on carbonate cements in Pasco Basin regionally relevant?
Uranium-thorium is a radiometric technique for dating carbonates. Paces (2014) estimated the ages of secondary carbonate cements in the...
Syngenetic Ice Wedge Growth
Syngenetic ice wedges form in polar regions in places where new sediment is periodically added to the ground surface (Layers A, B, C)....
Creative Depictions of the Ringold Fm
Stratigraphy of the Ringold Formation of Eastern Washington (9.5-3.4 Ma) has recently drawn my attention. The Ringold is a young...
Where is the Neogene Seismic Record for the Yakima Fold Belt?
"Considerable work awaits sedimentologists on and adjacent to the Columbia Plateau before we will be cognizant of all aspects of the...
Clastic Dikes: The Shape of Filled Fractures
There are 4 basic shapes taken by sediment-filled fractures. I classify them as "A", "AV", "V", and "X". Shape is dependent on the depth...
Megaflood Movie Grip
In the summer of 2008, a movie producer with National Geographic called me from England. They needed me right away. To be clear, they...