Partial dolomitization of foreslope and toe-of-slope facies of a Carnian carbonate platform, Transdanubian Range, Hungary

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Abstract

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.

Original languageEnglish
Pages (from-to)1-19
Number of pages19
JournalCentral European Geology
Volume57
Issue number1
DOIs
Publication statusPublished - Mar 1 2014

Keywords

  • Triassic
  • dolomitization
  • slope deposits
  • stable isotopes

ASJC Scopus subject areas

  • Geology

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