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https://hdl.handle.net/2440/44254
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Type: | Journal article |
Title: | Timing of Proterozoic metamorphism in the southern Curnamona Province: implications for tectonic models and continental reconstructions |
Author: | Rutherford, L. Hand, M. Hatch, K. |
Citation: | Australian Journal of Earth Sciences, 2007; 54(1):65-81 |
Publisher: | Taylor & Francis Ltd. |
Issue Date: | 2007 |
ISSN: | 0812-0099 1440-0952 |
Statement of Responsibility: | L. Rutherford; M. Hand; K. Barovich |
Abstract: | Chemical U-Th-Pb monazite ages from metasedimentary and meta-igneous units of the Willyama Supergroup have confirmed initial SHRIMP U-Pb metamorphic zircon ages constraining the onset of the earliest tectonometamorphic event (the Olarian Orogeny) at ca 1610 Ma in the southern Curnamona Province. An additional episode of high-grade metamorphism and heterogeneously distributed retrograde metamorphism and monazite recrystallisation occurred between ca 1570 and 1550 Ma. On the basis of monazite chemical U-Th-Pb ages from across the southern Curnamona Province, tectonometamorphic models based on ca 1690 Ma low-P, high-T metamorphism in the southern Curnamona Province are not supported. Furthermore, tectonic reconstructions that rely on the correlation of ca 1690 Ma deformation and metamorphism in the Broken Hill region with a similar aged event in the Mojave tarrane of southwestern Laurentia (AUSWUS) are not supported. |
Keywords: | chemical uranium thorium lead dating Curnamona Province metamorphism monazite Proterozoic |
DOI: | 10.1080/08120090600981459 |
Published version: | http://dx.doi.org/10.1080/08120090600981459 |
Appears in Collections: | Aurora harvest 6 Earth and Environmental Sciences publications Environment Institute publications |
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