Vitrinite Reflectance Data for the Wind River Basin, Central Wyoming

The Wind River Basin is a large Laramide (Late Cretaceous through Eocene)
structural and sedimentary basin that encompasses about 7,400 square miles in
central Wyoming. The basin boundaries are defined by fault-bounded Laramide
uplifts that surround it, including the Owl Creek and Bighorn Mountains to the
north, Wind River Range to the west, Granite Mountains to the south, and Casper
Arch to the east. The purpose of this report is to present new vitrinite
reflectance data to be used in support of the U.S Geological Survey assessment
of undiscovered oil and gas resources of the Wind River Basin. One hundred and
nineteen samples were collected from Jurassic through Tertiary rocks, mostly
coal-bearing strata, in an effort to better understand and characterize the
thermal maturation and burial history of potential source rocks.

[Summary provided by the USGS.]