Estudio isotópico preliminar de los carbonatos de la unidad lacustre Calizas de Torrente de Cinca (Cuenca del Ebro, NE España)

• Autores: Aránzazu Luzón Aguado, María José Mayayo Burillo, Alfonso Yuste Oliete, Blanca Bauluz Lázaro
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 9, 2006 (Ejemplar dedicado a: VI Congreso del Grupo Español del Terciario), págs. 149-152
• Idioma: español
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• Resumen

  • The Torrente de Cinca Unit was deposited during the Oligocene-Miocene transition in a carbonate precipitating lacustrine system. Previous sedimentological studies show that this system evolved through the time towards shallowe conditions. The preliminary isotopic study of the carbonates displays variations among the oxygen and carbon values from the lower part ( deposited in deeper inner zones) are lighter than those of the upper part. The combination of the sedimentological and isotopic results allows us to suggest a change toward conditions of lower hydrological balance (precipitation/evaporation) during the sedimentation of this unit. on the other hand, the increase in vegetal remains was the responsible for a change towards ligther values of the carbonates of the upper part.