Recent U-Pb igneous ages obtained in the SW Domain of the Anti-Atlas are not consistent with the model proposed in the recently published paper by Errami et al. (2020). The formations of the Taghdoute and Lkest groups in the SW Domain, also known as the “limestones and quartzites” series, were previously considered to have a Cryogenian age due to similarities with the series of limestone and quartzite of the Tachddamt Bleida Formation in the Bou-Azzer Inlier located in the NE Domain of the Anti-Atlas. However, recent U-Pb ages on zircon and baddeleyite of 1.71-1.65 Ga obtained on intrusive sills and dykes in the Taghdoute and Lkest groups, constrain this sedimentary series of the SW Domain to be approximately 1 Ga older than previously thought. Absence of Paleoproterozoic series in the NE Domain combined with the available age constraints suggests that it has a Pan-African age. However, recent 1.71-1.65 Ga ages of mafic magmatism in the SW Domain conflict with the previously inferred Tonian to Cryogenian age for the mixed carbonate-siliciclastic series of the Taghdoute and Lkest groups and raises uncertainty about the age of tectonic events previously attributed to the Pan-African Orogeny in this part of the Anti-Atlas. Furthermore, the age difference between the NE and SW domains of the Anti-Atlas suggests their independent geodynamic evolution before the Ediacaran Period.
