Provenance connections between late Neoproterozoic and early Palaeozoic sedimentary basins of the Ross Sea region, Antarctica, south-east Australia and southern Zealandia

U-Pb detrital zircon age patterns are reported for latest Neoproterozoic, Cambrian and Ordovician greywackes in tectonostratigraphic terranes, formerly contiguous in the present-day Ross Sea region: southern Zealandia, Marie Byrd Land, West Antarctica, and Northern Victoria Land, East Antarctica. The youngest age components are commonly coincident with depositional ages. Latest Neoproterozoic-early Paleozoic recycled zircons have major component(s), at about 525, 550, and 595 Ma, about 40-80 million years older than depositional ages, suggesting active-margin depocentres with minor, contemporary volcanic sources, and older, exhumed plutonic equivalents, becoming volumetrically more important in the Ordovician. Late Mesoproterozoic age components, at 1030 and 1070 Ma, probably originate from igneous/metamorphic complexes in the Gondwanaland hinterland, and evolve into more polymodal patterns in the early Ordovician. The detrital zircon provenances reflect the evolution of plutonic/metamorphic complexes of the Ross Fold Belt, Transantarctic Mountains, and Delamerian Fold Belt, South Australia, as sediment sources to depocentres at the Gondwanaland margin.