For the 4th of July weekend, we decided to get out and see another of Oregon's geologic gems, Wallowa Lake.
Aside from being a rare large lake in eastern Oregon, Wallowa Lake is one of the best examples of a glacial morain damming a valley to form a lake. From a view point off the Mt. Howard Tram, the moraines forming the boundary of the lake are easily visible.
Tuesday, July 5, 2011
Friday, July 1, 2011
I began writing about the 2011 Pacific Northwest NAGT field meeting here. On Friday we circumnavigated Steens Mountain. The final stop was in Colony Canyon south of Fields, Oregon near the Oregon Nevada Boarder. The area was postulated to be accreted terrain that was originally near the continental craton, but has been moved hundereds of kilometers east by the extension of the Basin and Range Province. There were numerous outcrops of highly metamorphic rock, and not enough time to thoroughly explore.
I am not strong on metamorphic rocks, but I know a nicely folded schist when I see one, and it makes a nice folded structure for a Friday.
|Andy and Turk debate the Metamorphic grade of the outcrop|