Abstract
The Eastern Algerian basin (EAB) occupies a key position at the eastern tip of the Western Mediterranean. Although clear triangular-shaped magnetic anomalies (MA) are well identified since long, the way seafloor spreading occurred during the middle Miocene is still debated. In this work, a new seismo-stratigraphic interpretation of deep penetration seismic data correlated to reduced to the pole MA was used in order to specify the distribution of the oldest sedimentary deposits in the oceanic domain, and thus to assess the best opening models matching the MA fan-shaped pattern. According to this pattern, our results reveal that the seafloor spreading of EAB has occurred along an NW–SE-oriented accretion system giving birth giving birth to six magnetic inversions spanning ca. 2 Myr in Langhian Serravallian times. The oldest units overlying the oceanic floor are of Langhian, i.e., younger than the syn-rift deposits identified on the stretched continental crust further south. We discussed the implications of our findings on the current opening models of the Western Mediterranean Sea.
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Haidar, S., Déverchère, J., Arab, M., Klingelhoefer, F., Graindorge, D., Medaouri, M. (2022). Seismo-stratigraphic Mapping Guided by Magnetic Anomalies Stripes: Assessing Opening Models for the Eastern Algerian Oceanic Domain. In: Meghraoui, M., et al. Advances in Geophysics, Tectonics and Petroleum Geosciences. CAJG 2019. Advances in Science, Technology & Innovation. Springer, Cham. https://doi.org/10.1007/978-3-030-73026-0_121
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DOI: https://doi.org/10.1007/978-3-030-73026-0_121
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