Jurassic carbonate systems of eastern Sardinia (Orosei Gulf) and depositional events in the Jurassic-Cretaceous carbonate system of Nurra (North-western Sardinia)

This field trip gives a panoramic of the facies association and sedimentological-stratigraphic evolution of Jurassic-Cretaceous depositional systems of eastern (Golfo di Orosei) and western (Nurra) Sardinia. Carbonate deposition in western Sardinia occurred in an epeiric sea during Jurassic and Cretaceous whereas carbonates of the eastern Sardinia figure out a complex depositional settings with intraplatformal basins facing the Alpine Tethys from a basal transgression in the Bajocian to Berriasian. The presence of partly coeval succession allows a comparison between these two depositional systems and highlights relation with global and regional events. The Jurassic-Cretaceous carbonate succession of Sardinia shows similarities with coeval succession of the Provencal-Pyrenean domain (Nurra), nevertheless differences, both in terms of facies characters and distribution and range of stratigraphic gaps, occur between the successions of eastern Sardinia. These differences can be ascribed to different paleogeographic and depositional settings.

DOI 10.3301/GFT.2010.02 Part I - 10.3301/GFT.2010.03 Part II

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