Sediment routing system and sink preservation during the post-orogenic evolution of a retro-foreland basin: The case example of the North Pyrenean (Aquitaine, Bay of Biscay) Basins

Abstract

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Tectonic Record of Deformation in Intraplate Domains: Case Study of Far-Field Deformation in the Grands Causses Area, France

“…Gély and Sztràkos [51] evidenced a 1 st phase of deformation associated with the flexuration of the Western European lithospheric plate during the Paleocene and then three successive tightening episodes during the Eocene (Figure 3). The recent study from Ortiz et al [52] showed a paroxysm of shortening in the Aquitaine Basin during the Priabonian (35.8 Ma). The end of the Pyrenees shortening occurred during the Chattian (27.1 to 25.2 Ma) [52].…”

“…The recent study from Ortiz et al [52] showed a paroxysm of shortening in the Aquitaine Basin during the Priabonian (35.8 Ma). The end of the Pyrenees shortening occurred during the Chattian (27.1 to 25.2 Ma) [52].…”

Paleogeothermal Gradients Across an Inverted Hyperextended Rift System: Example of the Mauléon Fossil Rift (Western Pyrenees)

“…This succession is no longer exposed in the Mauléon basin as the Pyrenean domain underwent exhumation and erosion starting in the Bartonian (~40 Ma; Bosch et al, 2016; Labaume et al, 2016; Vacherat et al, 2017). The Western Pyrenees ceased being affected by compression in the middle Miocene (15 Ma) during the postcollisional stage (e.g., Macchiavelli et al, 2017; Ortiz, 2019; Ortiz et al, 2019; Vergés et al, 2002).…”

Brittle tectonics and fluids overpressure during the early stage of the Bay of Biscay opening in the Jard-sur-Mer area, (northern Aquitaine Basin, France)

“…This rifting phase also led to extreme crustal thinning prior to the onset of oceanic accretion in the Bay of Biscay in latest Aptian-earliest Albian (Montadert et al, 1979;Curnelle and Dubois, 1986;Jammes et al, 2010;Tugend et al, 2015;Nirrengarten et al, 2018). Then, the Iberia-Eurasia convergence resulted in the onset of compression from late Albian to Campanian times (Biteau et al, 2006;Tugend et al, 2015) prior to the main compression phase from uppermost Cretaceous-Paleocene to Chattian (Biteau et al, 2006;Ortiz et al, 2020). Related tectonic inversions were mainly recorded by the southern margin edge of the Aquitaine Basin which became a retro-foreland basin of the growing Pyrenean mountain belt (Biteau et al, 2006;Ford et al, 2016;Angrand et al, 2018;Ortiz et al, 2020).…”

“…Then, the Iberia-Eurasia convergence resulted in the onset of compression from late Albian to Campanian times (Biteau et al, 2006;Tugend et al, 2015) prior to the main compression phase from uppermost Cretaceous-Paleocene to Chattian (Biteau et al, 2006;Ortiz et al, 2020). Related tectonic inversions were mainly recorded by the southern margin edge of the Aquitaine Basin which became a retro-foreland basin of the growing Pyrenean mountain belt (Biteau et al, 2006;Ford et al, 2016;Angrand et al, 2018;Ortiz et al, 2020). Additionally, seismic profiles indicate that Jurassic deposits in the northern Aquitaine Basin are affected by numerous normal faults that do not affect Upper Cretaceous formations (Huerta et al, 2010;Fig.…”