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This cyclic driver of sea level oscillations can get overruled by regional climatic changes and localized tectonic uplift. In times of decreasing accommodation space these current systems slow down and clastic input is reduced and the carbonate content increases.

Main clastic sediment input occurs at times of high accommodation space, when currents along the shelf are strong enough to carry in material from the Andean volcanic arc. This pattern is driven by the efficiency of along-shelf sediment transport, which is accommodation space controlled. The alternations between carbonate and siliciclastic dominance follow the sequence stratigraphic framework and indicate a direct relation to fluctuating sea level. Moreover due to the high acoustic velocities and densities, carbonate intervals represent high acoustic impedance and therefore are easily detectable in synthetic seismograms and compared seismic datasets. This study documents for the first time the lithofacies distribution of two classical exposures in connection with the stratal architecture observed from satellite and photo imagery and finds that carbonate-rich successions have a clear geometrical signature with steeper clinoform dips and more pronounced clinoform breaks than siliciclastic dominated intervals. Therefore this study takes an integrated approach, connecting detailed outcrop descriptions of geometries and lithofacies distribution within a sequence stratigraphic framework to the larger scale seismic architecture of the Quintuco - Vaca Muerta mixed carbonate siliciclastic system in the Neuquén Basin of Argentina.

For this purpose, subsurface or outcrop studies alone are not able to cover the full range of scales necessary to investigate the main controls on the system. The key to developing conceptual and predictive models of these mixed systems is the documentation and understanding of the sedimentary and environmental processes controlling these depositional environments. Mixed carbonate siliciclastic systems develop laterally and vertically complex sediment successions, which in turn complicate subsurface seismic interpretation and reservoir characterization.

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