

En Echelon Fractures in 2D & 3D
There's usually a low-tech way to explain complex geological phenomena. PlayDoh has been used for years to simulate ductile deformation...


Clastic Dike at Craig's Hill - Ellensburg, WA
Craig's Hill is located in Ellensburg, WA at the Rodeo Grounds near the Campus U-Tote-Em burger joint. Easy walkable access via roads...


Clastic Dikes in Lake Roosevelt Bluffs - Northeastern WA
Clastic dikes filled with coarse sand, pebbles, and up to golf ball-sized cobbles intrude shoreline bluffs along Lake Roosevelt in the...


Silt-Capped Rhythmites at Old Lady Canyon, WA
The publication of Richard Waitt's paper describing the stratigraphy of Burlingame Canyon in 1980 opened up a can of worms. In...


Alder Ridge Landslide
Twenty gullies cut the Alder Ridge Landslide. The slide plane resides in the clayey Selah interbed (Ellensburg Fm) and involves Miocene...


Soft Sediment Deformation in Touchet Beds
Soft sediment deformation features in the Touchet Beds of WA, OR, ID (that are not clastic dikes). I took all of these photos. Wallula...


Video: Density of Dikes at Willow Creek, OR
Most geologists are familiar with the Touchet Beds of the Walla Walla Valley and Pasco Basin that formed upstream of Wallula Gap in...


Video: Transfer Zones in Clastic Dikes
A clear example of structural bridging (a transfer zone) in a late Pleistocene composite clastic dike in Touchet bed-equivalent...


Origins of Clastic Dikes Flowchart
Keying out clastic dikes in the field can be difficult. Click on image for larger PDF.


Video: Excavation Reveals Flute Casts on Clastic Dike Walls
Excavation of Late Pleistocene clastic dikes in the Columbia River Basin reveals the presence of flute casts with upward pointing noses....