Polyphase deformation and deformation-magmatism interaction in the Pan-African 4°50′ shear zone (Hoggar, Southern Algeria)

•Microstructural observations and EBSD measurements were applied to nine mylonites from the 4°50′ shear zone.•Zircon U-Pb ages provide Pan-African ages and are related to dextral deformation accommodated with fluids.•Partial melting of lower crust/upper mantle triggered granitic intrusions from 661 ± 2.8 to 639 ± 2 Ma.•Successive magma batches during migmatization from 623 ± 4 Ma to 609 ± 2 Ma.•Local sinistral reactivation of the 4°50′ shear zone occurred posteriorly to 609 ± 2 Ma.•The 4°50′ shear zone remained active under high-temperature over ≥ 20 My.