1.6 Ga crustal thickening along the final Nuna suture

Abstract

Research Article| September 25, 2018 1.6 Ga crustal thickening along the final Nuna suture Amaury Pourteau; Amaury Pourteau * 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia *E-mail: amaury.pourteau@curtin.edu.au Search for other works by this author on: GSW Google Scholar Matthijs A. Smit; Matthijs A. Smit 2Pacific Centre for Isotope and Geochemical Research, Department of Earth, Ocean and Atmosphere Sciences, University of British Columbia, 2020–2207 Main Mail, Vancouver, BC V6T 1Z4, Canada Search for other works by this author on: GSW Google Scholar Zheng-Xiang Li; Zheng-Xiang Li 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia Search for other works by this author on: GSW Google Scholar William J. Collins; William J. Collins 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia Search for other works by this author on: GSW Google Scholar Adam R. Nordsvan; Adam R. Nordsvan 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia Search for other works by this author on: GSW Google Scholar Silvia Volante; Silvia Volante 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia Search for other works by this author on: GSW Google Scholar Jiangyu Li Jiangyu Li 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia Search for other works by this author on: GSW Google Scholar Author and Article Information Amaury Pourteau * 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia Matthijs A. Smit 2Pacific Centre for Isotope and Geochemical Research, Department of Earth, Ocean and Atmosphere Sciences, University of British Columbia, 2020–2207 Main Mail, Vancouver, BC V6T 1Z4, Canada Zheng-Xiang Li 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia William J. Collins 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia Adam R. Nordsvan 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia Silvia Volante 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia Jiangyu Li 1Earth Dynamics Research Group, ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) and The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia *E-mail: amaury.pourteau@curtin.edu.au Publisher: Geological Society of America Received: 24 May 2018 Revision Received: 05 Sep 2018 Accepted: 10 Sep 2018 First Online: 25 Sep 2018 Online Issn: 1943-2682 Print Issn: 0091-7613 © 2018 Geological Society of America Geology (2018) 46 (11): 959–962. https://doi.org/10.1130/G45198.1 Article history Received: 24 May 2018 Revision Received: 05 Sep 2018 Accepted: 10 Sep 2018 First Online: 25 Sep 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Amaury Pourteau, Matthijs A. Smit, Zheng-Xiang Li, William J. Collins, Adam R. Nordsvan, Silvia Volante, Jiangyu Li; 1.6 Ga crustal thickening along the final Nuna suture. Geology 2018;; 46 (11): 959–962. doi: https://doi.org/10.1130/G45198.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The precise timing and nature of the final assembly of the supercontinent Nuna, marked by the collision of proto-Australia and Laurentia (North America) between 1.65 and 1.50 Ga, has remained elusive. The final Nuna suture has been speculated to be concealed in northeastern Australia, but univocal evidence for crustal thickening across the suture zone has been critically lacking. Here we report new garnet petrological and geochronological results of samples from both sides of the inferred suture. The precise garnet Lu–Hf dates show uniformly synchronous prograde metamorphism between 1606 Ma and 1598 Ma, representing crustal thickening in the Georgetown Inlier and simultaneous basin inversion in the Mount Isa Inlier. Broad-scale orogenesis is further supported by the asymmetrical bivergent thrust wedge imaged by deep seismic reflection in the northeastern Australia continental crust. The precisely dated collision-related processes in northeastern Australia correlate with 1.61–1.59 Ga orogenesis recorded within South Australia and North America, suggesting a large-scale collision of Laurentia with Australia–East Antarctica, and pinpointing the final assembly of the supercontinent Nuna. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.