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(A) Map showing schematically the magnetic lineations (in dark blue) in the area of the Saharides and the locations of the points from which we report isotopic ages. For data details and sources see SI Appendix. (B) Histograms showing the isotopic ages of rocks representing distinct tectonic environments. Ophirags are fragments of ophiolites that have been dismembered in subduction zones, along collision fronts or along major strike-slip faults (56).
