TY - DATA T1 - Detrital zircon data reveal the origin of Australia’s largest delta system PY - 2016/06/21 AU - Justin D. MacDonald AU - Simon P. Holford AU - Paul F. Green AU - Ian R. Duddy AU - Rosalind C. King AU - Guillaume Backé UR - https://geolsoc.figshare.com/articles/dataset/Detrital_zircon_data_reveal_the_origin_of_Australia_s_largest_delta_system/3453224 DO - 10.6084/m9.figshare.3453224.v1 L4 - https://ndownloader.figshare.com/files/5422061 L4 - https://ndownloader.figshare.com/files/5422064 KW - Australian continent KW - Australian margin KW - delta system KW - 786 grains KW - Detrital zircon data KW - New detrital zircon analysis KW - deltaic system KW - Cretaceous exhumation KW - Cretaceous Ceduna Delta KW - Geology N2 - The Late Cretaceous Ceduna Delta is the largest deltaic system on the Australian continent, yet its source is unknown. Apatite fission-track data reveal widespread Late Cretaceous exhumation across the southern Australian margin. New detrital zircon analysis of 786 grains from the Gnarlyknots-1 well, which penetrated the offshore delta top, show that the upper part of the delta (Santonian–Maastrichtian) was sourced largely from recycled Permian to Early Cretaceous cover and underlying basement eroded from the margin, proximal to the basin. This challenges the widely accepted model involving distal provenance of >2000 km from the eastern margin of Australia. ER -