Tectonic and sediment provenance evolution of the South Eastern Pyrenean foreland basins during rift margin inversion and orogenic uplift

摘要: Abstract The Cretaceous to Oligocene detrital record in the southern Eastern Pyrenees is utilized address degree which precursor basin architecture and hyper-extensional rift structures impacted subsequent sedimentary provenance dispersal systems foreland evolution. This study presents new isotopic analysis of zircon U Pb (U Th)/He double-dating, rutile trace element geochemistry track sediment Late Cretaceous-Paleocene sediments show with dominantly Variscan Jurassic-Early ZHe cooling ages that are derived from southeastern Catalan Coastal Ranges eastern Corsica-Sardinia regions, localized structural inversion along inherited Mesozoic extensional faults erosional recycling syn-rift sediments. Eocene deposits have multimodal stratigraphically upsection change unimodal ages, appearance increase Pyrenean aged a significant shift source area northern sources recording exhumation unroofing Axial Zone Paleozoic basement sources, development ramp-flat style Southern fold-thrust belt. During Oligocene, incipient were cannibalized recycled into as thrusting advanced toward foreland. records different history Central Tremp Basin, suggesting basins segmented throughout while Ripoll Ager appear shared similar areas. evolution coupled fault activity shortening rates, hinterland exhumation, subsidence, climate proxies detailed dataset understand these relationships within orogenic system highlight dominant control inheritance has on belts