An overview of structurally-controlled dolostone-limestone transitions in the stratigraphic record

In structurally-controlled dolomitization systems, there is a general consensus that the formation of dolostone-limestone transitions, termed here as “dolomitization fronts”, governed by either presence an ultra-low permeability zone (fluid barrier) or changes in potential and kinetics. However, actual processes controlling abrupt termination dolostone bodies, their corresponding morphology dimension, are still relatively poorly understood. To address these challenges, we aim to (i) review different origin styles fronts stratigraphic record (ii) provide standardized framework quantitative insight describe interpret fronts. achieve this, field observations across geologic timescales geodynamic settings complimented with published data document The results show following morphologies associated both tabular columnar bodies: lateral contact/bed-perpendicular fronts; vertical contact/bed-parallel (iii) complex-shaped at distal part bodies. This morphological information, when coupled detailed petrography, mineralogical geochemical could help accurately reveal governing behind bodies reaction front geometries. Our shows first type primarily controlled interplay between intrinsic properties host rocks, dolomitizing fluids, self-organization process. contrast, second laterally continuous depositional, diagenetic, structural fluid barriers, creating significant contrast beds. interpreted be combination original lithological composition overview provides multi-study categorisation ancient controls on range scales. improves our understanding low temperature metasomatic processes, termination, sedimentary systems. Furthermore, it highlights how accurate interpretation can improve paleofluid flow, distribution economic resources dolomitized carbonate platforms, which challenging determine from themselves, where they have undergone multiple phases recrystallization diagenetic overprinting.