Merino, EnriqueCanals i Sabaté, Àngels2014-03-252014-03-2520110002-9599https://hdl.handle.net/2445/52945A new dynamic model of dolomitization predicts a multitude of textural, paragenetic, geochemical and other properties of burial dolomites. The model is based on two postulates, (1) that the dolomitizing brine is Mg-rich but under saturated with both calcite and dolomite, and (2) that the dolomite-for-calcite replacement happens not by dissolution-precipitation as usually assumed, but by dolomite-growth-driven pressure solution of the calcite host. Crucially, the dolomite-for-calcite replacement turns out to be self-accelerating via Ca2 : the Ca2 released by each replacement increment accelerates the rate of the next, and so on. As a result, both pore-fluid Ca2 and replacement rate grow exponentially.35 p.application/pdfeng(c) American Journal of Science, 2011DolomiaDiagènesiDolomiteDiagenesisinfo:eu-repo/semantics/article5990702014-03-25info:eu-repo/semantics/openAccess