Detrital zircon data reveal the origin of Australia’s largest delta system
Justin D. MacDonald
Simon P. Holford
Paul F. Green
Ian R. Duddy
Rosalind C. King
Guillaume Backé
10.6084/m9.figshare.3453224.v1
https://geolsoc.figshare.com/articles/dataset/Detrital_zircon_data_reveal_the_origin_of_Australia_s_largest_delta_system/3453224
<p>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.
</p>
2016-06-21 11:14:17
Australian continent
Australian margin
delta system
786 grains
Detrital zircon data
New detrital zircon analysis
deltaic system
Cretaceous exhumation
Cretaceous Ceduna Delta
Geology