Paleomagnetic and geochronological evidence for large-scale post–1.88 Ga displacement between the Zimbabwe and Kaapvaal cratons along the Limpopo belt

Abstract

Research Article| May 01, 2011 Paleomagnetic and geochronological evidence for large-scale post–1.88 Ga displacement between the Zimbabwe and Kaapvaal cratons along the Limpopo belt Richard E. Hanson; Richard E. Hanson * 1Department of Geology, Texas Christian University, Fort Worth, Texas 76129, USA *E-mail: [e-mail]. Search for other works by this author on: GSW Google Scholar Matthew Rioux; Matthew Rioux 2Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Search for other works by this author on: GSW Google Scholar Wulf A. Gose; Wulf A. Gose 3Jackson School of Geosciences, University of Texas, Austin, Texas 78712, USA Search for other works by this author on: GSW Google Scholar Terrence J. Blackburn; Terrence J. Blackburn 2Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Search for other works by this author on: GSW Google Scholar Samuel A. Bowring; Samuel A. Bowring 2Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Search for other works by this author on: GSW Google Scholar Joshua Mukwakwami; Joshua Mukwakwami 4Mineral Exploration Research Centre, Department of Earth Sciences, Laurentian University, Sudbury, Ontario P3E 2C6, Canada Search for other works by this author on: GSW Google Scholar Dai L. Jones Dai L. Jones 51866 Alcide Avenue, Vars, Ontario K0A 3H0, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Richard E. Hanson * 1Department of Geology, Texas Christian University, Fort Worth, Texas 76129, USA Matthew Rioux 2Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Wulf A. Gose 3Jackson School of Geosciences, University of Texas, Austin, Texas 78712, USA Terrence J. Blackburn 2Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Samuel A. Bowring 2Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Joshua Mukwakwami 4Mineral Exploration Research Centre, Department of Earth Sciences, Laurentian University, Sudbury, Ontario P3E 2C6, Canada Dai L. Jones 51866 Alcide Avenue, Vars, Ontario K0A 3H0, Canada *E-mail: [e-mail]. Publisher: Geological Society of America Received: 24 Aug 2010 Revision Received: 20 Dec 2010 Accepted: 08 Jan 2011 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2011 Geological Society of America Geology (2011) 39 (5): 487–490. https://doi.org/10.1130/G31698.1 Article history Received: 24 Aug 2010 Revision Received: 20 Dec 2010 Accepted: 08 Jan 2011 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Richard E. Hanson, Matthew Rioux, Wulf A. Gose, Terrence J. Blackburn, Samuel A. Bowring, Joshua Mukwakwami, Dai L. Jones; Paleomagnetic and geochronological evidence for large-scale post–1.88 Ga displacement between the Zimbabwe and Kaapvaal cratons along the Limpopo belt. Geology 2011;; 39 (5): 487–490. doi: https://doi.org/10.1130/G31698.1 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 Proterozoic reconstructions of the Kaapvaal and Zimbabwe cratons have been limited by the scarcity of precisely dated paleomagnetic poles for the Zimbabwe craton. We present new U-Pb baddeleyite and apatite dates from two diabase sheets that have previously yielded paleomagnetic data from the Mashonaland igneous province in the Zimbabwe craton. Discordant baddeleyite analyses yield upper intercept dates of 1871.9 ± 2.2 and 1882.7 +1.6/−1.5 Ma. Apatite data from the same samples give less precise but statistically indistinguishable dates, providing direct constraints on the post-magmatic thermal history of the diabases. The new U-Pb dates and other recently published baddeleyite dates from the Mashonaland province are coeval with mafic magmatism in the adjacent Kaapvaal craton (1879–1872 Ma), but paleomagnetic poles from the two intraplate suites differ by 39°, suggesting that the two cratons underwent substantial relative motion after ca. 1.88 Ga. Paleomagnetic reconstructions are consistent with >2000 km of lateral displacement being accommodated in the Limpopo orogenic belt that separates the two cratons. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.