The Geological History of Fossil Butte by Paul and Michael pdf free download. Fifty million years ago the southwestern corner of what is now Wyoming was part of a system of three freshwater lakes that covered that area plus adjacent parts of Colorado and Utah. These lakes began with Lake Flagstaff and later became Lake Gosiute, Lake Uinta, and Fossil Lake. These lakes developed in intermontane basins that were created as a result of the geologic events that formed the Rocky Mountains. The three lakes, collectively known as the Green River Lake System, had a long, complex history of expansion and contraction. Varying climatic and geologic conditions were responsible for the changes in lake size and distribution.
The Geological History of Fossil Butte by Paul and Michael pdf free download
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