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Structural and sedimentary origin of the Gargano - Pelagosa gateway and impact on sedimentary evolution during the Messinian Salinity Crisis

Abstract : Circulation of water masses, sediment, and biotope between the sub-basins of the Mediterranean Sea strongly depends on morphological oceanic gateways. These geological features react to geodynamic reorganisation through volcanism, vertical movements, and/or the segmentation of sedimentary basins. Despite the palaeogeographic relevance of straits and oceanic-gateways, their evolution and impact on sedimentary transports and deposition in the Mediterranean remain in general poorly constrained. The Gargano-Pelagosa gateway is here first recognized as an influential element of the palaeogeographic/environmental evolution of the central-southern Apenninic foredeep and wedge-top domains during the Messinian, as shown by the integration of (i) seismic lines, (ii) well information from the Adriatic Sea, and (iii) a review of both onshore and offshore structural data and Messinian depositional environments. A palinspastic evolution is proposed for the Apennine and south Adriatic foredeeps during the Messinian Salinity Crisis (MSC: 5.97-5.33 Ma). We highlight the implication of the pre-MSC structural legacy and the development of the Apennine and Dinarid-Albanian chains in 1) the isolation of the Apennine foredeep from the deep central Mediterranean domains at the peak of the MSC; 2) the vertical movements at the Gargano-Pelagosa structure and the Apulian Platform and 3) their implication in the deposition of a chaotic sedimentary body.
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https://hal-insu.archives-ouvertes.fr/insu-03846453
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Submitted on : Thursday, November 10, 2022 - 10:35:43 AM
Last modification on : Friday, November 11, 2022 - 4:03:24 AM

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Romain Pellen, Daniel Aslanian, Marina Rabineau, Jean-Pierre Suc, William Cavazza, et al.. Structural and sedimentary origin of the Gargano - Pelagosa gateway and impact on sedimentary evolution during the Messinian Salinity Crisis. Earth Science Reviews, 2022, 232, ⟨10.1016/j.earscirev.2022.104114⟩. ⟨insu-03846453⟩

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