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Direct dating of stromatolitic carbonates from the Schmidtsdrif Formation (Transvaal Dolomite), South Africa, with implications on the age of the Ventersdorp Supergroup

1990; Geological Society of America; Volume: 18; Issue: 12 Linguagem: Inglês

10.1130/0091-7613(1990)018 2.3.co;2

1943-2682

Bor‐ming Jahn, J. Bertrand-Sarfati, Nathalie Morin, J. Macé,

Geology and Paleoclimatology Research

Research Article| December 01, 1990 Direct dating of stromatolitic carbonates from the Schmidtsdrif Formation (Transvaal Dolomite), South Africa, with implications on the age of the Ventersdorp Supergroup Bor-ming Jahn; Bor-ming Jahn 1Centre Armoricain d'Etude Structurale des Socles-Centre National de la Recherche Scientifique, Université de Rennes, 35042 Rennes Cédex, France Search for other works by this author on: GSW Google Scholar J. Bertrand-Sarfati; J. Bertrand-Sarfati 2Centre Géologique et Géophysique, Université des Sciences et Techniques du Languedoc, Place Bataillon, 34060 Montpellier Cédex, France Search for other works by this author on: GSW Google Scholar N. Morin; N. Morin 1Centre Armoricain d'Etude Structurale des Socles-Centre National de la Recherche Scientifique, Université de Rennes, 35042 Rennes Cédex, France Search for other works by this author on: GSW Google Scholar J. Macé J. Macé 1Centre Armoricain d'Etude Structurale des Socles-Centre National de la Recherche Scientifique, Université de Rennes, 35042 Rennes Cédex, France Search for other works by this author on: GSW Google Scholar Author and Article Information Bor-ming Jahn 1Centre Armoricain d'Etude Structurale des Socles-Centre National de la Recherche Scientifique, Université de Rennes, 35042 Rennes Cédex, France J. Bertrand-Sarfati 2Centre Géologique et Géophysique, Université des Sciences et Techniques du Languedoc, Place Bataillon, 34060 Montpellier Cédex, France N. Morin 1Centre Armoricain d'Etude Structurale des Socles-Centre National de la Recherche Scientifique, Université de Rennes, 35042 Rennes Cédex, France J. Macé 1Centre Armoricain d'Etude Structurale des Socles-Centre National de la Recherche Scientifique, Université de Rennes, 35042 Rennes Cédex, France Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1990) 18 (12): 1211–1214. https://doi.org/10.1130/0091-7613(1990)018 2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Bor-ming Jahn, J. Bertrand-Sarfati, N. Morin, J. Macé; Direct dating of stromatolitic carbonates from the Schmidtsdrif Formation (Transvaal Dolomite), South Africa, with implications on the age of the Ventersdorp Supergroup. Geology 1990;; 18 (12): 1211–1214. doi: https://doi.org/10.1130/0091-7613(1990)018 2.3.CO;2 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 Pb isotopic analyses of stromatolitic limestones from the Schmidtsdrif Formation (Transvaal Dolomite) of South Africa give a late Archean isochron age of 2557 ±49 (2 sigma) Ma. The new date significantly changes the position of the Archean-Proterozoic boundary in the Kaapvaal province and suggests that a possible division of the Transvaal Supergroup is necessary. It also resolves the long-standing controversy about the age of the Ventersdorp Super-group, whose zircon U-Pb date of ca. 2.7 Ga must be more acceptable than the Rb-Sr dates of about 2.3 Ga. Our study provides a new example that demonstrates the great potential of employing the U-Pb systems of carbonate rocks for direct dating of sedimentary sequences. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.