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Science 23 December 1966:
Vol. 154. no. 3756, pp. 1544 - 1548
DOI: 10.1126/science.154.3756.1544
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Articles

Isotopic Composition and Origin of the Red Sea and Salton Sea Geothermal Brines

H. Craig 1

1 Department of Earth Sciences and Scripps Institution of Oceanography, University of California, La Jolla

Abstract. Deuterium and oxygen-18 measurements show that the Red Sea and Salton Sea brines are the results of a single process, the leaching of sediments by surface water circulating downward to a geothermal reservoir. The Salton Sea brine is derived from local precipitation but the Red Sea brine originates 1000 kilometers south of its basin, on the shallow sill which controls the circulation of the Red Sea. On this sill sea water penetrates a thick evaporite sequence to a depth of 2000 meters, and, driven by its increased density relative to sea water, flows northward to emerge in the brine-filled deeps.


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