Truncations control dike width and apparent taper direction. What appears to be an upward-tapering, upward-injected clastic dike sourced...

A few images from my 35mm slide collection, including a few of the 1996 Walla Walla flood and other trips with Whitman Geology students....

Networks of Pleistocene clastic dikes are sometimes visible on bladed slopes or surfaces that have had all vegetation removed. Aerial...