Constraints from in-situ Rb-Sr dating on the timing of tectono-thermal events in the Umm Farwah shear zone and associated Cu-Au mineralisation in the Southern Arabian Shield, Saudi Arabia

•In-situ Rb-Sr dating constrains tectonic and igneous events in mineralised systems.•Umm Farwah Major Shear Zone was developed between 671 Ma and 631 Ma.•Ablah pegmatite was emplaced following the shear zone between 626 and 611 Ma.•Greisen and Cu-Au deposits in the Mount Ablah were formed due to two separate hydrothermal events.