21. Thermal maturity map of Devonian shale in the Illinois, Michigan, and Appalachian Basins of North America Publication/Creation: [Reston, Virginia] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, Colo. : For sale by U.S. Geological Survey, 2012 Resource Type: Map Access & Availability: Loading
22. Biostratigraphic data from Upper Cretaceous formations--eastern Wyoming, central Colorado, and northeastern New Mexico Author/Creator: Merewether, E. A. 1930- (Edward Allen) Publication/Creation: [Reston, VA] : U.S. Dept. of the Interior, U.S. Geological Survey, 2011 Resource Type: Map Access & Availability: Loading
23. Bedrock geologic map of the Seward Peninsula, Alaska, and accompanying conodont data Author/Creator: Till, Alison B. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2011 Resource Type: Map Access & Availability: Loading
24. Regional stratigraphy and petroleum systems of the Illinois Basin, U.S.A Author/Creator: Swezey, C. (Christopher) Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2009 Resource Type: Map Access & Availability: Loading
25. Regional stratigraphy and petroleum systems of the Illinois Basin, U.S.A Author/Creator: Swezey, C. (Christopher) Publication/Creation: Denver, Colo. : For sale by U.S. Geological Survey, Information Services Resource Type: Map Access & Availability: Loading
26. Regional stratigraphy and petroleum systems of the Michigan Basin, North America Author/Creator: Swezey, C. (Christopher) Publication/Creation: Denver, Colo. : For sale by U.S. Geological Survey, Information Services Resource Type: Map Access & Availability: Loading
27. Stratigraphic framework of Cambrian and Ordovician rocks in the Appalachian Basin from Sequatchie County, Tennessee, through eastern Kentucky, to Mingo County, West Virginia Author/Creator: Ryder, Robert T. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, Colo. : For sale by U.S. Geological Survey, Information Services, 2008 Resource Type: Map Access & Availability: Loading
28. Stratigraphic framework of Cambrian and Ordovician rocks in the Appalachian Basin from Sequatchie County, Tennessee, through eastern Kentucky, to Mingo County, West Virginia Author/Creator: Ryder, Robert T. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, Colo. : For sale by U.S. Geological Survey, Information Services, 2008 Resource Type: Map Access & Availability: Loading
29. Geologic map of Upper Cretaceous and Tertiary strata and coal stratigraphy of the Paleocene Fort Union Formation, Rawlins-Little Snake River area, south-central Wyoming Publication/Creation: [Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey, 2008 Resource Type: Map Edition: Version 1.0. Access & Availability: Loading
30. Precambrian basement structure map of the continental United States, an interpretation of geologic and aeromagnetic data Author/Creator: Sims, P. K. 1918-2011. (Paul Kibler) Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : Information Services [distributor], 2008 Resource Type: Map Access & Availability: Loading