Dolomitization: Observations on the Island of Bonaire, Netherlands Antittes

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Science  14 Feb 1964:
Vol. 143, Issue 3607, pp. 678-679
DOI: 10.1126/science.143.3607.678


Evaporation of sea water and gypsum precipitation on south Bonaire produce dense brines having a high ratio of magnesium to calcium. Recent dolomite is a common replacement product in the associated carbonate sediments. A mass balance indicates that brine is being refluxed downward today, and the Pleistocene dolomite on north Bonaire could have been produced by similar reflux of brine.