Clastic Dikes Form Polygonal Networks
Networks of Pleistocene clastic dikes are sometimes visible on bladed slopes or surfaces that have had all vegetation removed. Aerial photo shows a dike network translating through a bladed slope along I-82 near the Best Western at Sunnyside, WA. Google Earth photo, May 2015. Photointerpretation of the dike network. Denser vegetation grows atop the dikes, making them darker. Taller grasses highlight the dike network in Touchet Beds. Google Street View photo.
Mapping Stock Watering Structures in Southeast Idaho
I used to work for the Confederated Tribes of the Colville Indian Reservation. I was the Soil Scientist. The Tribe manages 1.4 million acres of forest and rangeland in north-central Washington. One of my responsibilities was commenting on proposals submitted to the Tribe by USDA Natural Resources Conservation Service (NRCS) on behalf of private stock growers to develop natural springs for stock watering. The projects typically involved the installation of a new spring box (ca
How I Take Field Notes on Clastic Dikes
"You can tell the cut of a Geologist's jib by the state of his field book." Above is a page from one of my field books showing what data and information I collect at each outcrop. Twenty-one dikes were exposed at this site near Lewiston, ID. The largest was 50cm wide. I spent about 20 minutes at this site, taking notes, scrambling around on the somewhat steep, loose slope at the base of the vertical exposure. A more involved field book entry. Not too much shorthand. Reasonabl