Subaerial Diagenesis of Carbonate Sediments: Efficiency of the Solution-Reprecipitation Process

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Science  05 Apr 1968:
Vol. 160, Issue 3823, pp. 77-79
DOI: 10.1126/science.160.3823.77


Interaction between percolating groludwaters and aragonitic carbonate sediments within the vadose zone of the coral cap of Barbados, West Indies, results in dissolution of aragonite and concurrent reprecipitation as low-magnesium calcite. Comparison of the ratios of strontium to calcium in groundwater, aragonitic carbonate, and recrystallized calcite indicates that locally the solution-reprecipitation process is operating at an efficiency greater than 90 percent.