Resumen de Origen de concreciones dolomíticas en el Terciario de la Cuenca de Calatayud (Zaragoza)

Juan Miguel A. Mandado Collado, C. Rubio, Francisco Javier Torrijo Echarri, M. E. Bona Artazos

• Carbonate concretions in deposits of Tertiary (Calatayud-Zaragoza) were studied. The concretions are included in dolomitic mudstones, and contain dolomite and detrital particles of host. The cement is micritic dolomite. Content in authigenic cement decreases outwards the concretions related to the ground waters. A precompactacional model, and a reemplacement growth are proposed.