Geophysical settings created by The Nature Conservancy used for our geophysical cores. See Anderson MG, Barnett A, Clark M, Ferree C, Sheldon AO, Prince J (2016) Resilient sites for terrestrial conservation in eastern North America 2016 edition. The Nature Conservancy, Eastern Conservation Science. https://easterndivision.s3.amazonaws.com/Resilient_Sites_for_Terrestrial_Conservation.pdf for details. [updated 9/10/18]