Stanley T. Paxton Scott A. Kinney Katherine J. Whidden Seth S. Haines Brian A. Varela Tracey J. Mercier Cheryl A. Woodall Christopher J. Schenk Heidi M. Leathers-Miller Ofori N. Pearson Lauri A. Burke Phuong A. Le Justin E. Birdwell Nicholas J. Gianoutsos Katherine L. French Ronald M. Drake II Thomas M. Finn Geoffrey S. Ellis Stephanie B. Gaswirth Kristen R. Marra Marilyn E. Tennyson Chilisa M. Shorten Janet K. Pitman 2020 <p>Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 6.9 billion barrels of oil and 41.5 trillion cubic feet of natural gas in conventional and continuous accumulations in the Upper Cretaceous Austin Chalk and Tokio and Eutaw Formations onshore and in State waters of the U.S. Gulf Coast region.</p> application/pdf 10.3133/fs20203045 en U.S. Geological Survey Assessment of undiscovered oil and gas resources in the Upper Cretaceous Austin Chalk and Tokio and Eutaw Formations, U.S. Gulf Coast, 2019 reports