Wilson and Ruppel [8] showed that thermohaline convection dominates only when salt dissolution is active, and over time, when salinity gradients stabilize, thermal convection again becomes the dominant groundwater driver.
Hanor, "Free thermohaline convection beneath allochthonous salt sheets: an agent for salt tectonics and fluid flow in Gulf Coast sediments," in Gulf Coast Section, Society of Economic Paleontologists and Mineralogists Foundation Annual Research Conference, vol.
Conduction controls the thermal structure in the basal units with advection, and likely thermohaline convection, taking place in the high permeability shallow units.
