• 40 Ar/ 39 Ar ages of polyhalite and langbeinite record multi-stage basin evolution. • Langbeinite crystallization during early diagenesis. • Langbeinite fluid-driven crystallization during Jurassic to Cretaceous tectonism. • Langbeinite and polyhalite recrystallization and growth along normal faults caused by fluids circulation generated by Miocene magmatic activity. • Langbeinite and polyhalite act as robust 40Ar/39Ar dating tools in salt basins.
Glasmacher et al. (Mon,) studied this question.