Acknowledgements
Fieldwork was carried out from 2016-2021 with the continued support of the Sultan Qaboos University. We acknowledge the field assistance of Katharina Scharf and Gianluca Frijia. We furthermore thank Hamdan Al-Zidi and Bader Al-Waili (both Sultan Qaboos University) for preparation of rock samples for the U-Pb dating. R. Bolhar acknowledges financial support to establish the LA-SF-ICP-MS facility at the School of Geosciences, University of the Witwatersrand, through a NRF-NEP grant (UID 105674). The Editor xxx and the two reviewers xxx and xxx greatly improved the manuscript.