Resumen de Procesos de dolomitización acaecidos en las sedimentitas carbonáticas del Ordovícico Inferior de la Precordillera, San Juan, Républica Argentina.
Sergio D. Matheos, Luis A. Spalletti, Claudia M. Muruaga
Dolomitization processes are recognized in the Lower Ordovician San Juan Formation, Central Argentine Precordillera. The sedimentary sequence is composed by limestones with different textures, predominantly wackestone and bioclastic packstone in massive and well laminated deposits, with typical tabular stratofabric. The main early diagenetic features are represented by incomplete fibrous calcite cement and eogenetic dolomite. Late ca/cite cement, polimodal dolomite and stylo/ites are the main burial diagenetic products. The late stages of diagenesis are signed by a third type of dolomite.
