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  • 1 MTA-ELTE Geological, Geophysical and Space Science Research Group Budapest H-1117 Pázmány P. sétány 1/c Hungary
  • | 2 Geological and Geophysical Institute H-1143 Stefánia út 14 Budapest Hungary
  • | 3 Hungarian Academy of Sciences Research Centre for Astronomy and Earth Sciences H-1112 Budaörsi út 45 Budapest Hungary
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Partial and pervasive dolomitization of foreslope and toe-of-slope deposits of an early Carnian carbonate platform was investigated to understand the process and mechanism of dolomitization. Based on petrographic observations and C and O isotope data, the dolomitization took place in a near-surface to shallow burial setting; seawater of slightly elevated salinity was likely the dolomitizing fluid. The circulation system was maintained by reflux of evaporated sea water and geothermal heating of cold seawater derived from the surrounding deeper basin. The dolomitization was mostly controlled by the permeability of the platform-derived calcareous sediments.

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