EnergyGeologic mapsInternet Temperature of rocks at 3.5 kilometers below the surface in the continental US April 29, 2016 Alex Related Posts:Maps of the Great LakesHow is climate will change in the U.S. (2030 - 2100)?Official gems, minerals and rocks symbols of every…Human Climate Niche MappedEarth's surface visualizedThe Temperature Extremes That Define America's ClimateDifference Between Highest and Lowest Temperatures…Average annual temperature