Dolomite formation in Jurassic carbonate platforms of Southern Germany

During the Jurassic, southern Germany was covered by a shallow sea environment with active formation of carbonate platforms. As these platforms never experienced extreme pressure and temperature conditions due to deep burial or metamorphic overprint from nearby orogeny, we expect them to preserve relatively pristine formation fabrics. Still the top of these mainly limestone buildups are dolomitized and it is not well understood how this dolomitization proceeded. We study the origin of the dolomitization process of these Jurassic platforms with microscopic cathodoluminescence imaging to visualize different formation events, clumped isotope thermometry to derive the formation temperature and with the analysis of the elemental concentration distribution by µ-XRF we aim to obtain new insights on the formation process and the origin of the precipitation fluid.