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Science 25 June 1971:
Vol. 172. no. 3990, pp. 1334 - 1336
DOI: 10.1126/science.172.3990.1334
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Articles

Magnesium-Iron Replacement in Clay Minerals in Anoxic Marine Sediments

James I. Drever 1

1 Scripps Institution of Oceanography, University of California, San Diego, La Jolla 92037

In anoxic marine sediments iron is extracted from clay minerals to form a sulfide. Magnesium from the surrounding solution then replaces the extracted iron in the clay mineral structure. This process removes magnesium from seawater and serves as a control on the composition of interstitial waters in sediments.


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