**Event Passed** Fremont Lake straddles two major geologic terrains, the Precambrian crystalline rocks that make up the Wind River Range and the Paleozoic to Mesozoic sedimentary rocks that underlie the Green River Basin. The contact between the Precambrian crystalline rocks and the Paleozoic to Mesozoic sedimentary rocks is a major thrust fault dipping to the northeast that carried the crystalline rocks over the sedimentary rocks. Fremont is a glacial lake that formed during the Pinedale stage of mountain glaciation. All of the land forms that surround the lake and that extend into the basin for a considerable distance were formed during this glacial period. Join us for a field trip that will discuss the formation of the Wind River Range and view and discuss the many glacial landforms between Elkhart Park and Pinedale.
Instructor: Ron Worl
Registration not necessary – meet at Elkhart Park Parking Lot at 9 a.m., Sept. 9, 2017