Natural subsurface temperature distribution , where is position vector.
It is formed by the upward vertical heat conduction from Earth's centre towards Earth's surface with account of subsurface rock inhomogeneity, local immovable heat sources and lateral/vertical heat-mass flows.
the temp
[ Petroleum Geology ][ Geological Model (GM) ]
[ Geothermal Temperature Field @model ][ Geothermal Temperature Profile @model ]