Timothy R. Klett Marilyn E. Tennyson Janet K. Pitman Stephanie B. Gaswirth Phuong A. Le Heidi M. Leathers-Miller Tracey J. Mercier Kristen R. Marra Sarah J. Hawkins Michael E. Brownfield Christopher J. Schenk 2016 <p>Using a geology-based assessment methodology, the U.S. Geological Survey assessed undiscovered, technically recoverable mean resources of 787 billion cubic feet of conventional gas and 1,630 billion cubic feet of unconventional gas in the Thrace Basin, Turkey.</p> application/pdf 10.3133/fs20163001 en U.S. Geological Survey Assessment of undiscovered gas resources of the Thrace Basin, Turkey, 2015 reports