Re-Assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMS
High precision Chemical abrasion-isotope dilution thermal ionisation mass spectrometry (CA-IDTIMS) U-Pb zircon results from tuff marker beds that are interstratified within the Upper Permian deposits of the northern Sydney Basin add constraints on the timing of sediment deposition, and afford a bett...
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doaj-60f81fd9a99448d6b6dae9d3da417dba2020-11-25T04:12:05ZengMDPI AGGeosciences2076-32632020-11-011047447410.3390/geosciences10110474Re-Assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMSAngelos G. Maravelis0Jake Breckenridge1Kevin Ruming2Erin Holmes3Yuri Amelin4William J. Collins5Department of Geology, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceSchool of Environmental and Life Sciences, University of Newcastle, Callaghan 2308, AustraliaGeological Survey of NSW, Department of Industry, Division of Resources and Energy, Maitland 2320, AustraliaGeological Survey of NSW, Department of Industry, Division of Resources and Energy, Maitland 2320, AustraliaResearch School of Earth Sciences, The Australian National University, Building 142, 1 Mills Road, Acton, Canberra 2601, AustraliaFaculty of Science and Engineering, School of Earth and Planetary Sciences (EPS), Curtin University, GPO Box U1987, Perth 6845, AustraliaHigh precision Chemical abrasion-isotope dilution thermal ionisation mass spectrometry (CA-IDTIMS) U-Pb zircon results from tuff marker beds that are interstratified within the Upper Permian deposits of the northern Sydney Basin add constraints on the timing of sediment deposition, and afford a better understanding of the regional stratigraphy. The results indicate a magmatic influence during the deposition of the sediments, with episodic events spanning at least from 255.65 ± 0.08 to 255.08 ± 0.09 Ma. The zircon data suggest that the studied sedimentary rocks and tuffs have accumulated simultaneously over a short time interval, which contrasts with current stratigraphic models that suggest a much greater period of deposition and stratigraphic thickness. Therefore, an updated stratigraphic correlation of the basin is suggested, which combines the presently defined Lambton, Adamstown, and Boolaroo sub-groups into a single Lambton sub-group. This updated correlation framework is stratigraphically and geochronologically constrained and provides a more precise exploration model for the northern Sydney Basin. This case study highlights the valuable contribution of the CA-IDTIMS method in intrabasinal correlations of sedimentary successions, when integrated with a robust sedimentological framework, to minimize the stratigraphic uncertainties.https://www.mdpi.com/2076-3263/10/11/474CA-IDTIMS zircon datingstratigraphic correlationPermianSydney BasinAustralia |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Angelos G. Maravelis Jake Breckenridge Kevin Ruming Erin Holmes Yuri Amelin William J. Collins |
spellingShingle |
Angelos G. Maravelis Jake Breckenridge Kevin Ruming Erin Holmes Yuri Amelin William J. Collins Re-Assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMS Geosciences CA-IDTIMS zircon dating stratigraphic correlation Permian Sydney Basin Australia |
author_facet |
Angelos G. Maravelis Jake Breckenridge Kevin Ruming Erin Holmes Yuri Amelin William J. Collins |
author_sort |
Angelos G. Maravelis |
title |
Re-Assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMS |
title_short |
Re-Assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMS |
title_full |
Re-Assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMS |
title_fullStr |
Re-Assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMS |
title_full_unstemmed |
Re-Assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMS |
title_sort |
re-assessing the upper permian stratigraphic succession of the northern sydney basin, australia, by ca-idtims |
publisher |
MDPI AG |
series |
Geosciences |
issn |
2076-3263 |
publishDate |
2020-11-01 |
description |
High precision Chemical abrasion-isotope dilution thermal ionisation mass spectrometry (CA-IDTIMS) U-Pb zircon results from tuff marker beds that are interstratified within the Upper Permian deposits of the northern Sydney Basin add constraints on the timing of sediment deposition, and afford a better understanding of the regional stratigraphy. The results indicate a magmatic influence during the deposition of the sediments, with episodic events spanning at least from 255.65 ± 0.08 to 255.08 ± 0.09 Ma. The zircon data suggest that the studied sedimentary rocks and tuffs have accumulated simultaneously over a short time interval, which contrasts with current stratigraphic models that suggest a much greater period of deposition and stratigraphic thickness. Therefore, an updated stratigraphic correlation of the basin is suggested, which combines the presently defined Lambton, Adamstown, and Boolaroo sub-groups into a single Lambton sub-group. This updated correlation framework is stratigraphically and geochronologically constrained and provides a more precise exploration model for the northern Sydney Basin. This case study highlights the valuable contribution of the CA-IDTIMS method in intrabasinal correlations of sedimentary successions, when integrated with a robust sedimentological framework, to minimize the stratigraphic uncertainties. |
topic |
CA-IDTIMS zircon dating stratigraphic correlation Permian Sydney Basin Australia |
url |
https://www.mdpi.com/2076-3263/10/11/474 |
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