1. Tectonic map of the Circum-Pacific Region, southwest quadrant Author/Creator: Circum-Pacific Map Project Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
2. 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