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Supercritical density flows on cool-water carbonate ramps : the Lower Pleistocene of Favignana Island, Italy

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Defense Thèse de doctorat : Univ. Genève, 2016 - Sc. 5055 - 2016/12/15
Abstract The correct identification of upper flow-regime sedimentary structures in the cool-water carbonate realm is crucial to the development of realistic depositional models that predict the distribution of thick and widespread carbonate sandstones and conglomerates. This disser-tation presents a case study of the cool-water carbonate ramp succession in the Lower Pleistocene of Favignana Island, Sicily. Excellent exposures enable the detailed analysis of sedimentary structures and the reconstruction of upper flow-regime bedform morpho-dynamics, herewith elucidating the sedimentary processes that operate in such depositional environments. It is demonstrated that high-energy, supercritical flows leave a major imprint on the carbonate sediment bodies thus created. The present work contributes to our understanding of the genesis of such bodies by revealing a catastrophic signature in the evolution of cool-water carbonate ramps, which is directly linked to the predictability of the distribution of important reservoir units in the subsurface.
Keywords CarbonatesCool-waterCarbonate rampSupercritical flowBedformsTsunamiAntidunesCyclic stepsHydraulic jumpMorphodynamicsDensity flowFavignanaMediterranean
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URN: urn:nbn:ch:unige-927590
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Structures
Research group Reservoir Geology and Sedimentary Basin Analyses
Project DIP
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SLOOTMAN, Arnoud. Supercritical density flows on cool-water carbonate ramps : the Lower Pleistocene of Favignana Island, Italy. Université de Genève. Thèse, 2016. https://archive-ouverte.unige.ch/unige:92759

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Deposited on : 2017-03-22

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