Christopher J. Schenk Tracey J. Mercier Cheryl A. Woodall Heidi M. Leathers-Miller Phuong A. Le Andrea D. Cicero Geoffrey S. Ellis Michael H. Gardner Sarah E. Gelman Jane S. Hearon Benjamin G. Johnson Scott A. Kinney Jenny H. Lagesse Kira K. Timm Scott S. Young Thomas M. Finn 2024 <p>Using a geology-based assessment methodology, the U.S. Geological Survey estimated means of 1.04 billion barrels of oil, 3.9 trillion cubic feet of gas, and 11 million barrels of natural gas liquids in Upper Cretaceous marine shales in the Raton Basin-Sierra Grande Uplift Province in Colorado and New Mexico.</p> application/pdf 10.3133/fs20233049 en U.S. Geological Survey Assessment of undiscovered continuous oil and gas resources in Upper Cretaceous marine shales of the Raton Basin-Sierra Grande Uplift Province, Colorado and New Mexico, 2022 reports