Timing of megakinks and related structures: Constraints from the Devonian Bunga‐Wapengo Basin, Mimosa Rocks National Park, New South Wales

Abstract

The Bunga beds are bounded by faults adjacent to which are fanglomerates that form part of an early Late Devonian volcanic rift basin. Some cross‐faults acted as precursors for later regional deformation that kinked the Ordovician basement and gently folded the basin sediments in a northwest‐southeast direction. Details of the faulted junction at Picnic Point and orientation of cleavage microstructures in the fanglomerates support the dating of the north‐south regional F2 deformation as Middle Devonian or older and the northwest‐southeast F3 kinking as post‐early Late Devonian.