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Title: Late Permian U-Pb CA-IDTIMS isotope geochronology of the Bowen Basin, Eastern Australia
Contributor(s): Metcalfe, Ian  (author); Nicoll, RS (author); Mundil, R (author); Denyszyn, S (author); Crowley, J (author); Mantle, D (author); Willink, R (author); Foster, CB (author)
Publication Date: 2011
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Abstract: High-resolution geochronology with an age resolution at the permil or sub-permil levels has the potential to internationally calibrate Late Permian peri-Gondwanan sequences in the Bowen Basin. Previous attempts at such calibration have relied on carbon-isotope records and very tenuous biostratigraphic and lithostratigraphic correlations here deemed unsuitable for a high-resolution chronostratigraphic framework for the basin. Existing SHRIMP U-Pb ages for some tuffs in the basin have been compromised by inaccuracy and low precision when compared to the CA-IDTIMS method. High-precision CA-IDTIMS ages also allow us to correlate individual tuff beds across the basin, to estimate rates of climatic and biotic change between the late Guadalupian and late Changhsingian major Permian mass extinctions. We here report seven new U-Pb CA-IDTIMS ages for ash-tuffs in the Late Permian of the Bowen Basin.
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
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Series Name: Geological Survey of Western Australia Record
Series Number : 2011/20
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