Analysis of the subsidence evolution of the Central High Atlas basin, coupled to geochemistry of some REE, shows that this rift “failed” in Late Jurassic times most probably due to differential extension, the mantle being more stretched than the crust as suggested by volcanism, leading to uplift as predicted by non-uniform extension models. The thermal dome may have been active since that time. The straightforward implications are that any thermal evolution models should take into account the lithospheric evolution and the complex geodynamic history of the CHA.


Article metrics loading...

Loading full text...

Full text loading...


  1. Bensalah, M.K., Martins, L.T., Youbi, et al.
    [2006]. Preliminary data on the Upper Jurassic–Early Cretaceous magmatism of the Oued El-Abid synclinal zone (Central High Atlas, Morocco): volcanology, geochemistry and geodynamic implications. In: Proceedings of the VII Congresso Nacional de Geologia, Universidade de Évora, Estremoz, Portugal, 143–146.
    [Google Scholar]
  2. Bensalah, M.K., Youbi, N., Mata, J. et al.
    [2013] The Jurassic-Cretaceous basaltic magmatism of the Oued El-Abid syncline (High Atlas, Morocco): physical volcanology, geochemistry and geodynamic implications. Journal of African Earth Sciences, 81, 60–81.
    [Google Scholar]
  3. BertrandH.
    [1991] The Mesozoic tholeiitic province of northwest Africa: A volcano-tectonic record of the early opening of the central Atlantic. In Kampunzu, A.B. & Lubala, R.T. (eds), The Phanerozoic African plate, New York: Springer-Verlag, 147–191.
    [Google Scholar]
  4. Bertrand, H., Dostal, H. & Dupuy, C.
    [1982] Geochemistry of early Mesozoic tholeiites from Morocco. Earth and Planetary Science Letters, 58, 225–239.
    [Google Scholar]
  5. Callec, Y., Janjou, D., Baudin, T. et al.
    [2006] Echelle des temps géologiques, BRGM.
    [Google Scholar]
  6. El HachimiH.
    [2012] La Province Magmatique de l’Atlantique Central (CAMP) du Haut-Atlas, Maroc. Volcanologie physique, pétrologie, géochimie, paléomagnétisme et implications géodynamiques. Doctorat Memoir, University Cadi Ayyad, Faculty of Sciences, Marrakech.
    [Google Scholar]
  7. Ellam, R.M.
    [1992] Lithospheric thickness as a control on basalt geochemistry. Geology, 20, 153–156.
    [Google Scholar]
  8. Favre, P., & Stampfli, G. M.
    [1992] From rifting to passive margin: the examples of the Red Sea, Central Atlantic and Alpine Tethys. Tectonophysics, 215(1), 69–97.
    [Google Scholar]
  9. Frizon de LamotteD., LeturmyP., MissenardY. et al.
    [2009] Mesozoic and Cenozoic vertical movements in the Atlas system (Algeria, Morocco, Tunisia): An overview. Tectonophysics, 475, 9–28
    [Google Scholar]
  10. HaqB., HardenbolJ. & VailP.R.
    [1987]. Chronology of fluctuating sea levels since the Triassic. Science, 235, 1156–1167.
    [Google Scholar]
  11. Hellinger, S.J., & Sclater, J.G.
    [1983] Some comments on two-layer extensional models for the evolution of sedimentary basins. Journal of Geophysical Research: Solid Earth, 88(B10), 8251–8269.
    [Google Scholar]
  12. Hirota, Y., Tamaki, M. & Nakamura, N.
    [2002] Rare earth element abundances in the CK chondrites including the Kobe meteorite. Geochemical Journal, 36, 309–322.
    [Google Scholar]
  13. Marzoli, A., Bertrand, H., Knight, K. B. et al.
    [2004] Synchrony of the Central Atlantic magmatic province and the Triassic-Jurassic boundary climatic and biotic crisis. Geology, 32(11), 973–976.
    [Google Scholar]
  14. McKenzieD.P.
    [1978] Some remarks on the development of sedimentary basins. Earth & Planet. Sci. Letters, 55, 25–32.
    [Google Scholar]
  15. McKenzie, D.P. & O’Nions, R.K.
    [1991] Partial melt distribuitions from inversion of Rare Earth elements concentrations, Journal of Petrology, 32, 1021–1091.
    [Google Scholar]
  16. Saura, E., Vergés, J., Martín-Martín, J. D., et al.
    [2014] Syn-to post-rift diapirism and minibasins of the Central High Atlas (Morocco): the changing face of a mountain belt. Journal of the Geological Society, 171(1), 97–105.
    [Google Scholar]
  17. Souhel, A.
    [1996] Le mésozoïque dans le Haut-Atlas de Béni-Mellal (Maroc): stratigraphie, sédimentologie et évolution géodynamique. Strata, 2(27), 1–249.
    [Google Scholar]
  18. Souhel, A., El Bchari, F., El Hariri, KH., et al.
    [2011] Haut Atlas central, partie Nord-Ouest. Notes et Mém. Serv. Géol. Maroc, 562, 63–112.
    [Google Scholar]
  19. Stets, J.
    [1992] Mid-jurassic events in the western high Atlas (Morocco). Geologische Rundschau, 81, 69–84.
    [Google Scholar]

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error