High-Precision U-Pb CA-TIMS Calibration of Middle Permian to Lower Triassic Sequences, Mass Extinction and Extreme Climate-Change in Eastern Australian Gondwana
نویسندگان
چکیده
Twenty-eight new high-precision Chemical Abrasion Isotope Dilution Thermal Ionisation Mass Spectrometry U-Pb zircon dates for tuffs in the Sydney and Bowen Basins are reported. Based on these new dates, the Guadalupian-Lopingian/Capitanian-Wuchiapingian boundary This is an author-produced, peer-reviewed version of this article. The final, definitive version of this document can be found online at Gondwana Research, published by Elsevier Copyright restrictions may apply. doi: 10.1016/j.gr.2014.09.002
منابع مشابه
Current perspectives on the Permian–Triassic boundary and end-Permian mass extinction: Preface
The end-Permian mass extinction is now robustly dated at 252.6 ± 0.2 Ma (U–Pb) and the Permian–Triassic (P–T) GSSP level is dated by interpolation at 252.5 Ma. An isotopic geochronological timescale for the Late Permian–Early Triassic, based on recent accurate high-precision U–Pb single zircon dating of volcanic ashes, together with calibrated conodont zonation schemes, is presented. The durati...
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