Yesos de Calatayud:: aplicación del estudio de facies y geoquímica de sulfatos al conocimiento de un sistema evaporítico.

• Autores: Federico Ortí Cabo, Laura Rosell Ortiz, Anthony E. Fallick, Rosa Utrilla Casal
• Localización: Geogaceta, ISSN 0213-683X, Nº. 15, 1993, págs. 74-77
• Idioma: español
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• Resumen

  • The study of depositional and diagenetic calcium-sulphate evaporites in the Calatayud Gypsum (Zaragoza prov., Spain), reveals the existence of a NW to SE elongated and relatively asymmetrical arrangement in this Miocene lacustrine system. In this particular arrangement a marginal belt exists of bioturbated gypsum, surrounding a central body formed by nodular laminated-facies. This marginal belt is narro win the N W zone and wider in the SE zone. The isotopic compositions (8'30 , 8 34S) of all the studied samples suggest that a concentration gradient occurred in the basin towards the NW area of the central body, where the more saline waters and the depocentre were probably located.