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Age and geochemistry of the Boucaut Volcanics in the Neoproterozoic Adelaide Rift Complex, South Australia


Armistead, SE and Collins, AS and Buckman, S and Atkins, R, Age and geochemistry of the Boucaut Volcanics in the Neoproterozoic Adelaide Rift Complex, South Australia, Australian Journal of Earth Sciences, 68, (4) pp. 580-589. ISSN 0812-0099 (2021) [Refereed Article]

Copyright Statement

Copyright 2020 Geological Society of Australia.

DOI: doi:10.1080/08120099.2021.1840435


The Adelaide Rift Complex in South Australia records the break-up of Rodinia at a time of great climatic and biological evolution. The Boucaut Volcanics within the Neoproterozoic Adelaide Rift Complex of the Adelaide Superbasin lie at the base of the Burra Group, marking the boundary between the Burra Group and underlying Callanna Group. Despite their significance as one of the few volcanic units within the rift complex, there has been no robust age determination published for the Boucaut Volcanics. We use U-Pb zircon LA-ICP-MS data to determine an age of 788  6 Ma for the eruption of the bimodal Boucaut Volcanics. This has important implications for constraining the timing of stratigraphy within the Adelaide Superbasin. This also has far-reaching implications for plate tectonic reconstructions of Australia and Laurentia, and for correlating global isotope anomalies for the Neoproterozoic.

Item Details

Item Type:Refereed Article
Keywords:Adelaide Rift Complex, Flinders Ranges, geochemistry, geochronology, Neoproterozoic, Rodinia, Snowball Earth, Adelaide Superbasin
Research Division:Earth Sciences
Research Group:Geology
Research Field:Geochronology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the earth sciences
UTAS Author:Armistead, SE (Dr Sheree Armistead)
ID Code:150190
Year Published:2021
Web of Science® Times Cited:2
Deposited By:CODES ARC
Deposited On:2022-06-01
Last Modified:2022-09-20

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