Trace Water Content of Salt in Louisiana Salt Domes

Science  28 Aug 1981:
Vol. 213, Issue 4511, pp. 1005-1007
DOI: 10.1126/science.213.4511.1005


The trace water content of salt in six Louisiana salt domes has been determined and has been found to be the lowest of any terrestrial rock type. The average water content of normal domal salt is on the order of 0.003 percent by weight, but anomalous zones within salt stocks can have more than ten times this amount. From the average value, the minimum amount of water in liters, W, available to collect around a radioactive waste repository is given as W = 0.28 r3, where r is the radius in meters of the sphere in which water may be thermally activated to migrate completely to the repository.