Global versus regional influence on the carbonate factories of Oligo-Miocene carbonate platforms in the Mediterranean area |
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| Institution: | 1. Institute of Geology and Mineralogy, University of Cologne, Zülpicher Str. 49a, 50674 Cologne, Germany;2. Istituto di Geologia Ambientale e Geoingegneria, IGAG-CNR, Via Salaria km. 29.4, Monterotondo, Rome, Italy;3. Istituto di Geoscienze e Georisorse, IGG-CNR, Via Moruzzi 1, 56126 Pisa, Italy;4. Laboratoire des Sciences du Climat et de l''Environnement, IPSL, Laboratoire CEA/CNRS/UVSQ et Université de Paris-Saclay, Gif-Sur-Yvette, France;5. Institute of Geological Sciences & Oeschger Centre for Climate Change Research, University of Bern, Switzerland;6. School of Geography, University of Melbourne, Victoria 3010, Australia;7. EDYTEM, UMR CNRS 5204, Université de Savoie-Mont Blanc, 73376 Le Bourget du Lac-Cedex, France;8. Dipartimento di Scienze della Terra, University of Pisa, Via S. Maria 53, 56126 Pisa, Italy;9. Dipartimento di Protezione Civile, Via Vitorchiano 4, 00189 Rome, Italy;1. Institute of Earth Sciences, University of Graz, NAWI Graz, Heinrichstrasse 26, A-8010 Graz, Austria;2. Department of Earth and Planetary Sciences, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8066, United States;3. Department of Marine and Coastal Sciences, Rutgers University, 71 Dudley Road, New Brunswick, NJ 08901, United States;4. Geological-Paleontological Department, Natural History Museum Vienna, Burgring 7, A-1010 Vienna, Austria;5. Dipartimento di Scienze della Terra, Università degli Studi Torino, Via Valperga Caluso 35, I-10125 Torino, Italy;1. Geosciences Department, Research Group on Reservoir Characterization, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia;2. Center of Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia |
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| Abstract: | The Oligocene-Miocene is a key interval that was characterized by a cooling trend associated with a progressive decrease of atmospheric CO2 concentrations that ends in the Present days.In the Central Mediterranean area, during this interval, three main carbonate platform domains developed in the foreland zone of the Apennines: the Latium-Abruzzi-Campana and Apulia domain in the central and south-eastern sectors of the chain and the Hyblea and Pelagian carbonate platforms in the south and south-western sectors. This work analyzes the impact and interplay of global and regional factors controlling the development of different carbonate factories and facies associations over the Chattian and the early Messinian time interval. Three well-studied examples of the central Mediterranean will be used: the Chattian ramp of Malta, the Latium-Abruzzi ramp, and the Bolognano ramp within the northern portion of the Apulian carbonate platform (outcropping on Majella Mountain).The Malta ramp represents the reference model for the heterozoan Oligo-Miocene carbonate factory, since it developed far from terrigenous input, in persistent oligotrophic conditions, and within a tropical climate. In contrast, the evolution of the central Apennine ramps is strictly related to the geodynamic evolution of the Apennines and simultaneously to global oceanographic changes.The Chattian Apennine ramps are affected by a basin conformation that favored the development of dominant currents and related dune fields. Successively, these ramps were exposed to strong Aquitanian volcanism that induced a shift towards an aphotic-dominated carbonate factory. Since the Burdigalian the development of the Apennines has affected the evolution of the investigated ramps through the eastward migration of foredeep systems and related nutrient input. This influence becomes more evident between the Tortonian and Messinian, during which reef-rimmed platforms developed in the rest of the Mediterranean while red algae still dominated in the Apennine ramps. Amongst the global events, the C-cycle perturbation, occurring between the late Burdigalian and Serravallian (Monterey event), leaves a clear sign on the two Apennine ramps. |
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| Keywords: | Oligo-Miocene Central Mediterranean Apennines Ramps Carbonate factory |
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