Síntesis estratigráfica del Terciario del borde Sur de la Cuenca del Ebro: unidades genéticas

J. VILLENA MORALES, A. GONZÁLEZ, A. MUÑOZ, G. PARDO, A. PÉREZ

Abstract


In the southern margin of the Ebro Basin eigth Tectosedimentary Units (TSU) have been defined by means of the application of tectosedimentary analysis. These units are limited by sedimentary breaks which can be recognized in the whole studied area. The sedimentary breaks are genetically related to diastrophic evolution, and they are shown as angular or syntectonic unconformities at the basin margins. Each TSU has aparticular sequential evolution, generally complex, but with a similar trend in the entire area. For each unit the litologic composition, evolution, boundaries and chronostratigraphy are established. The three first units are placed in the Palaeogene, the fourth one includes the Palaeogene-Neogene boundary and the four last ones are Neogene in age. The chronostratigraphic interval of each one is, respectively: Thanetian-Bartonian, Bartonian-Priabonian, Priabonian-Lower Oligocene, Upper Oligocene-Agenian, Agenim-Middle Aragonian, Middle Aragonim-Upper Aragonian, Upper Aragonian-Upper Vallesian, and Turolian. Finally the equivalences between the Tectosedimentary Units and the cartographic units defiiied by other authors have been establised.


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