Miscellaneous

The limits of aquifer-bearing sedimentary basins have been determined from a global compilation by Penwell [1]. In addition, public datasets on the depth of the basement–sediment interface [2][3] have been used to construct sediment thickness. The sediment thickness dataset is combined with limits of the aquifer-bearing sedimentary basins to produce an aquifer depth map. Considering solely conventional use of direct heat, the map is cut-off to a maximum depth of 3km (zmax) demonstrate that large areas on the globe have aquifer potential.