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Flowchart for Determining Origin of Clastic Dikes
Tools I Use to Excavate Clastic Dikes
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Clastic Dikes Intruding Columbia River Basalt
Clastic dikes in the Columbia Basin are wedge-shaped bodies composed of silt, sand and gravel. There are hundreds of thousands of these features in this vast region. The dikes cut various sedimenta...
Video: Grainsize Distribution in Clastic Dikes
Grainsize distributions inside adjacent fill bands in clastic dikes of the Columbia Basin commonly differ from one another, sometimes dramatically. When sampled in bulk, however, the distribution o...
Video: Excavation Exposes Flute Casts on Dike Walls
Excavation of Late Pleistocene clastic dikes in the Columbia River Basin reveals the presence of flute casts with upward pointing noses. Flute casts are directional indicators of flow and scour by ...
Video from the Field: Clastic Dikes in Umatilla Basin
See the YouTube video here:http://tinyurl.com/lw64rn5Please consider giving a few bucks to help fund our research into these cool sedimentary features. Thanks for watching!
Max Dike Width: Expected vs. Observed Patterns
Maximum width of liquefaction features is a classic metric used in paleoseismic analysis. The idea is that soft sediment deformation features should be largest near the paleoepicenter and reduce in...
Clastic Dikes Exposed at the Touchet Fm Type Locality
The type section for the Touchet Formation (Missoula flood slackwater rhythmites) is the high bluff along the Walla Walla River just south of Touchet, WA. The section is located next door to the cl...