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|Title:||New Middle Permian - Early Triassic U-Pb zircon CA-IDTIMS isotopic ages of tuffs in the Sydney Basin, Australia: International calibration of stratigraphy and biostratigraphy||Contributor(s):||Metcalfe, Ian (author); Nicoll, RS (author); Crowley, J (author); Ives, M (author); Mantle, D (author); Ruming, K (author); Huyskens, M (author); Foster, CB (author)||Publication Date:||2011||Handle Link:||https://hdl.handle.net/1959.11/8409||Abstract:||The Middle Permian-Early Triassic (MP-ET) of Eastern Australia contains a predominantly endemic biota precluding precise correlation with standard international biozones and System/Stage boundaries. The Permian-Triassic boundary, other MP-ET stage boundary levels, and the major end-Guadalupian and end-Permian mass extinction levels in Australia remain poorly constrained. Attempts to calibrate the MP-ET of Australia using Sensitive High Resolution Ion Microprobe techniques have resulted in controversial radioisotopic ages with percent-level uncertainty and compromised accuracy due to the use of an unsuitable standard. We here report eighteen new high-precision (<±0.05 my) U-Pb CA-IDTIMS ages for tuffs in the Sydney Basin based on isotopic dating of chemically abraded individual zircons. These dates provide vital international timescale tie points for the MP-ET of Australia.||Publication Type:||Conference Publication||Conference Name:||ICCP 2011: XVII International Congress on the Carboniferous and Permian, Perth, Australia, 3rd - 8th July, 2011||Conference Details:||ICCP 2011: XVII International Congress on the Carboniferous and Permian, Perth, Australia, 3rd - 8th July, 2011||Source of Publication:||Programme & Abstracts: The XVII International Congress on the Carboniferous and Permian, p. 92-92||Publisher:||Geological Survey of Western Australia||Place of Publication:||Perth, Australia||Field of Research (FOR):||040303 Geochronology||HERDC Category Description:||E3 Extract of Scholarly Conference Publication||Other Links:||http://geodocs.doir.wa.gov.au/search.jsp?cabinetId=1101&Combined=N11X
|Series Name:||Geological Survey of Western Australia Record||Series Number :||2011/20||Statistics to Oct 2018:||Visitors: 441
|Appears in Collections:||Conference Publication|
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