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

Ian Metcalfe; RS Nicoll; J Crowley; M Ives; D Mantle; K Ruming; M Huyskens; CB Foster

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

Ian Metcalfe, RS Nicoll, J Crowley, M Ives, D Mantle, K Ruming, M Huyskens, CB Foster

School of Environmental & Rural Science

Research output: Contribution to conference › Abstract

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.

Original language	English
Pages	92-92
Publication status	Published - 2011
Event	ICCP 2011: XVII International Congress on the Carboniferous and Permian - Perth, Australia Duration: 3 Jul 2011 → 8 Jul 2011

Conference

Conference	ICCP 2011: XVII International Congress on the Carboniferous and Permian
City	Perth, Australia
Period	3/07/11 → 8/07/11

Keywords

Geochronology

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Metcalfe, I., Nicoll, RS., Crowley, J., Ives, M., Mantle, D., Ruming, K., Huyskens, M., & Foster, CB. (2011). 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. 92-92. Abstract from ICCP 2011: XVII International Congress on the Carboniferous and Permian, Perth, Australia. https://hdl.handle.net/1959.11/8409

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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",

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.",

keywords = "Geochronology",

author = "Ian Metcalfe and RS Nicoll and J Crowley and M Ives and D Mantle and K Ruming and M Huyskens and CB Foster",

year = "2011",

language = "English",

pages = "92--92",

note = "ICCP 2011: XVII International Congress on the Carboniferous and Permian ; Conference date: 03-07-2011 Through 08-07-2011",

}

Metcalfe, I, Nicoll, RS, Crowley, J, Ives, M, Mantle, D, Ruming, K, Huyskens, M & Foster, CB 2011, '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', ICCP 2011: XVII International Congress on the Carboniferous and Permian, Perth, Australia, 3/07/11 - 8/07/11 pp. 92-92. <https://hdl.handle.net/1959.11/8409>

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. / Metcalfe, Ian; Nicoll, RS; Crowley, J et al.
2011. 92-92 Abstract from ICCP 2011: XVII International Congress on the Carboniferous and Permian, Perth, Australia.

Research output: Contribution to conference › Abstract

TY - CONF

T1 - New Middle Permian - Early Triassic U-Pb zircon CA-IDTIMS isotopic ages of tuffs in the Sydney Basin, Australia

T2 - ICCP 2011: XVII International Congress on the Carboniferous and Permian

AU - Metcalfe, Ian

AU - Nicoll, RS

AU - Crowley, J

AU - Ives, M

AU - Mantle, D

AU - Ruming, K

AU - Huyskens, M

AU - Foster, CB

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

KW - Geochronology

UR - http://geodocs.doir.wa.gov.au/search.jsp?cabinetId=1101&Combined=N11X

UR - http://trove.nla.gov.au/work/155774845

M3 - Abstract

SP - 92

EP - 92

Y2 - 3 July 2011 through 8 July 2011

ER -

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

Abstract

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