Geology at the Colville River Mouth - Lake Roosevelt, WA
Colville River Mouth. The Colville River enters the Columbia River at Rivermile 100 just south of Kettle Falls, WA. Its an easy hike along its north bank out to the point if the water level is low and your footing is sure. March is typically a low-water month. Park at the pullout near the Hwy 25 bridge, carefully cross the bridge (narrow shoulder), and descend a fisherman's path down to the rocky flat along the river. Traverse west towards the sandy outcrops seen in the dista
Calcrete Growth in Alluvial Lowlands - Eastern Washington
I can't get any lower. Still I feel I'm sinking. -Soundgarden Thick pedogenic calcrete is intrinsically related to the presence of a valley. Calcrete forms in stable, lowland settings where vigorous evapotranspiration occurs. Resistant calcretes, once formed, persist and often define remnant geomorphic surfaces that are later incised. A caprock calcrete that today occupies an elevated position in the landscape likely formed as a lowland soil or as a crust on a gently-sloping
Paleoseismic Trenches in Eastern Washington
Locations of paleoseismic trenches and Quaternary faults in Eastern Washington. Trenches excavated across fault scarps, often visible in lidar images or aerial photographs, provide geologists a unique perspective on recent deformation of rocks, sediments, and soils. Most trenches are a few meters deep and tens of meters long. Large trenches cost tens of thousands of dollars, requiring heavy excavation equipment and several weeks of staff time to complete. Trenches are refille
