Abstract

The 14,585-ft deep Superior Oil Company well at Stafford Creek, Andros Island, Bahamas, penetrated four sequences of dolomite, each of which is capped with limestone or partly dolomitized limestone. The original lithology throughout the well was predominantly aragonite-pellet mud similar to that now accumulating west of Andros Island. The four sequences record four major depositional cycles, each of which was terminated by a period of erosion and dolomitization. The proposed model for dolomitization requires solution-cannibalization of mixed carbonate phases at sea level in order to furnish magnesium for dolomitization. The four periods of uplift are correlated with Cuban orogenic episodes of the inter-Late Cretaceous, middle Eocene, end of Eocene, and lower Miocene.

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