Basic Lower 48 Heat Map
Posted on December 18th, 2007 by Lawrence Molloy
The geothermal resources map of the United States below shows the estimated subterranean temperatures at a depth of 6 kilometers. Yellow or red indicates boiling water. To determine the Earth’s internal temperature at any depth below the capabilities of normal well drilling, multiple data sets are synthesized. The data used for this figure are: thermal conductivity, thickness of sedimentary rock, geothermal gradient, heat flow and surface temperature. The numbers are in Celsius!
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