February 18, 2020
Colorado’s Uranium Deposits
[Ed: this document, written in 2011 by Jim Burnell, Ph.D., P.G. (former Senior Minerals Geologist, Colorado Geological Survey), provides an…
The Jurassic is a geological period of the Mesozoic Era, and of the Phanerozoic Eon. During this period, the Morrison Formation was deposited. The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rock found in the western United States which has been the most fertile source of dinosaur fossils in North America.