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SHRIMP U-Pb zircon ages of granitoids from the Western Domain of the Kaapvaal Craton, Southeastern Botswana: implications for crustal evolution

2004; Geological Society of South Africa; Volume: 107; Issue: 1-2 Linguagem: Inglês

10.2113/107.1-2.159

1996-8590

R.B.M. Mapeo, Richard Armstrong, A.B. Kampunzu, L.V. Ramokate,

High-pressure geophysics and materials

Research Article| June 01, 2004 SHRIMP U-Pb zircon ages of granitoids from the Western Domain of the Kaapvaal Craton, Southeastern Botswana: implications for crustal evolution R.B.M. Mapeo; R.B.M. Mapeo University of Botswana, Private Bag 0022, Gaborone, Botswana., e-mail: mapeorbm@mopipi.ub.bw Search for other works by this author on: GSW Google Scholar R.A. Armstrong; R.A. Armstrong Research School of Earth Sciences, Australian National University, Canberra ACT 0200, Australia., e-mail: richard.armstrong@anu.edu.au Search for other works by this author on: GSW Google Scholar A.B. Kampunzu; A.B. Kampunzu University of Botswana, Private Bag 0022, Gaborone, Botswana, e-mail: kampunzu@mopipi.ub.bw Search for other works by this author on: GSW Google Scholar L.V. Ramokate L.V. Ramokate Geological Survey Department, Private Bag 14, Lobatse, Botswana, e-mail: lvramokate@gov.bw Search for other works by this author on: GSW Google Scholar Author and Article Information R.B.M. Mapeo University of Botswana, Private Bag 0022, Gaborone, Botswana., e-mail: mapeorbm@mopipi.ub.bw R.A. Armstrong Research School of Earth Sciences, Australian National University, Canberra ACT 0200, Australia., e-mail: richard.armstrong@anu.edu.au A.B. Kampunzu University of Botswana, Private Bag 0022, Gaborone, Botswana, e-mail: kampunzu@mopipi.ub.bw L.V. Ramokate Geological Survey Department, Private Bag 14, Lobatse, Botswana, e-mail: lvramokate@gov.bw Publisher: Geological Society of South Africa First Online: 07 Mar 2017 Online ISSN: 1996-8590 Print ISSN: 1012-0750 © 2003 Geological Society of South Africa South African Journal of Geology (2004) 107 (1-2): 159–172. https://doi.org/10.2113/107.1-2.159 Article history First Online: 07 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 R.B.M. Mapeo, R.A. Armstrong, A.B. Kampunzu, L.V. Ramokate; SHRIMP U-Pb zircon ages of granitoids from the Western Domain of the Kaapvaal Craton, Southeastern Botswana: implications for crustal evolution. South African Journal of Geology 2004;; 107 (1-2): 159–172. doi: https://doi.org/10.2113/107.1-2.159 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 SocietySouth African Journal of Geology Search Advanced Search Abstract SHRIMP U-Pb zircon dating of granitoids from borehole cores from the Amalia-Kraaipan granite-greenstone terrain of southeast Botswana yielded dates of: 2939±9 Ma for the biotite granite gneiss, 2943±9 Ma for the pink granite and 2782±6 Ma for the red granite. These dates define two main granite magmatic events in the Western Domain of the Kaapvaal Craton at ~2.96 to ~2.94 Ga and ~2.78 Ga. In the Kaapvaal Shield the main magmatic events are dated at ~3.5 to ~3.3, ~3.2 to ~3.1, ~2.96 to ~2.94 and ~2.78 Ga. The two domains were therefore affected by coeval igneous events at ~2.96 to ~2.94 Ga and ~2.78 Ga and therefore the age of ~2.96 to ~2.94 Ga is taken to date their amalgamation along the Colesberg lineament. The ages of ~2.78 Ga correspond to the emplacement of the Gaborone Igneous Complex of southeast Botswana, which is possibly related to the reactivation of or renewed igneous activity along the Colesberg lineament. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.