Print Email Facebook Twitter Post-Variscan evolution of the Anti-Atlas belt of Morocco constrained from low-temperature geochronology Title Post-Variscan evolution of the Anti-Atlas belt of Morocco constrained from low-temperature geochronology Author Gouiza, M. (University of Leeds) Charton, R.J.G. (TU Delft Applied Geology) Bertotti, G. (TU Delft Applied Geology) Andriessen, P. (Vrije Universiteit Amsterdam) Storms, J.E.A. (TU Delft Applied Geology) Date 2016 Abstract The Anti-Atlas belt of Morocco extends ENE–WSW, over more than 600 km, from the Atlantic margin in the west to the interior of the African plate in the east. It exhibits Precambrian rocks outcropping as basement inliers and surrounded by marine Ediacaran–Cambrian sequences around the axis of the mountain range. The belt, which has for a long time been interpreted as of Variscan age, is now revealed to have experienced major vertical movements through Mesozoic and Cenozoic times. Thereby, the Anti-Atlas domain appears to be affected by two episodes of exhumation separated by an episode of subsidence. The initial episode occurred in the Late Triassic and led to the exhumation of 7.5–10.5 km of crustal rocks by the end of the Middle Jurassic (ca. 160–150 Ma). The following phase resulted in 1–3 km of basement subsidence and occurred during the Late Jurassic and most of the Early Cretaceous. The basement rocks were then slowly brought to the surface after experiencing 2–3.5 km of exhumation throughout the Late Cretaceous and the Cenozoic. The timing of these episodes of exhumation and subsidence coincides with major tectonic and thermal events in relation with the evolution of the Atlantic and Tethys Oceans, indicating that the effects of their rifting and drifting extended beyond their presumed margins. Subject Anti-Atlas beltAtlantic marginMoroccoRadiometric datingTectonicsVertical movements To reference this document use: http://resolver.tudelft.nl/uuid:107bb69c-deff-4147-9ad6-c060df81de30 DOI https://doi.org/10.1007/s00531-016-1325-0 ISSN 1437-3254 Source International Journal of Earth Sciences, 116 (2), 593–616 Part of collection Institutional Repository Document type journal article Rights © 2016 M. Gouiza, R.J.G. Charton, G. Bertotti, P. Andriessen, J.E.A. Storms Files PDF art_3A10.1007_2Fs00531_01 ... 1325_0.pdf 2.48 MB Close viewer /islandora/object/uuid:107bb69c-deff-4147-9ad6-c060df81de30/datastream/OBJ/view