The late-Holocene origin of the modern Murray River course, southeastern Australia

摘要: The modern course of the Murray River flows south around Cadell Tilt Block in southeastern Australia. avulsion that took river this direction formed Barmah Choke, a reach with an unusually straight planform. This morphology has been used to argue Holocene inertia system. was initially placed at ∼ 10 ka on basis single charcoal age. Optically stimulated luminescence (OSL) and AMS 14C dating deposits along Choke demonstrates not inert during period. A digitate delta deposited floor palaeolake by is only 550 years old. Point bar deposition also began time. probably followed Bullatale Creek for most Holocene. It large, inset meander scrolls Pleistocene ‘Kotupna-type’ creek but without source-bordering dunes. persistence Kotupna-type bedload suggests there wa...