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Fig. 5


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Paleogeographical reconstructions for the Early-Middle Jurassic and the end of the Late Jurassic. (a) Early-Middle Jurassic (Toarcian-Aalenian) wide-scale paleogeographical reconstruction. The well-established rifted domains are the Central Atlantic Ocean and the East Ligurian Tethys. In between, generally NE-SW oblique basins are more or less opened, from intraplate rift basins like the Atlas basins to embryonic oceanic domains like the Rif Basin, or the Betic Basin where an oceanic domain was likely preserved. The map and ages of break-up are mostly based on Aït Ouali (1991), Dercourt et al. (2000), Favre (1992), Fedan (1988), Handy et al. (2010), Labails et al. (2010), Lombardo et al. (2002), Manatschal and Müntener (2009), Puga et al. (2011), Ramos et al. (2017b), Sahabi et al. (2004), Sallarès et al. (2013), Schaltegger et al. (2002), Soussi (2000) and the references. (b) Focus on the western tip of the Maghrebian Tethys by the end of the Late Jurassic, after the east-southeastward drift of Africa since the Bajocian. This sketch illustrates the transition from extended and hyper-extended domains to exhumed mantle and/or oceanic crust (maybe transitional crust for the whole Maghrebian Tethys). The reconstruction is based on Dercourt et al. (2000), Favre et al. (1991), Ramos et al. (2017b), and Vera (2001). The Rifian Basin, “Pays des Horsts” of the French authors (Northeast Morocco) and Chouala unit is our re-interpretation in terms of paleogeography of the field data presented in Ciszak (1993), Fenet (1975), Guardia (1975), and Michard et al. (1992, 2007). AB: Algarve Basin; BB: Betics Basin; CA: Central High Atlas; ChU: Chouala Unit; CP: Csontantine Platform; ELT: East Ligurian Basin; GB: Gorringe Bank; IM: Iberian Massif; MA: Middle Atlas; OB: Oran Basin; PB: Prebetics; PH: “Pays des Horsts”; RB: Rifian Basin; SA: Sahara Atlas; SbB: SubBetics; TA: Tunisian Atlas; WLT: West Ligurian Basin.

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