Dolomitisation occurred in at least two main episodes.
Shah M.M., Nader F.H., Garcia D., Swennen R., Ellam R. 2012, 'Hydrothermal Dolomites in the Early Albian (Cretaceous) Platform Carbonates (NW Spain):Nature and Origin of Dolomites and Dolomitising Fluids Dolomies hydrothermales présentesdans les carbonates de la plate-forme albienne précoce (Crétacé; NO de l'Espagne): nature et origine des dolomies et des fluides dolomitisants', Oil & Gas Science and Technologyhttp://dx.doi.org/10.2516/ogst/2011174. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Subsequently, a second episode of very hot and localised dolomitisation may be related to igneous activity and convective flow.
Shah M.M., Nader F.H., Garcia D., Swennen R., Ellam R. 2012, 'Hydrothermal Dolomites in the Early Albian (Cretaceous) Platform Carbonates (NW Spain):Nature and Origin of Dolomites and Dolomitising Fluids Dolomies hydrothermales présentesdans les carbonates de la plate-forme albienne précoce (Crétacé; NO de l'Espagne): nature et origine des dolomies et des fluides dolomitisants', Oil & Gas Science and Technologyhttp://dx.doi.org/10.2516/ogst/2011174. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)