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Geoelectric evidence for centripetal resurge of impact melt and breccias over central uplift of Araguainha impact structure

2010; Geological Society of America; Volume: 38; Issue: 1 Linguagem: Inglês

10.1130/g30459.1

1943-2682

Vincent C. H. Tong, Cristiano Lana, Yára R. Marangoni, Vagner Roberto Elis,

Geology and Paleoclimatology Research

Research Article| January 01, 2010 Geoelectric evidence for centripetal resurge of impact melt and breccias over central uplift of Araguainha impact structure C.H. Tong; C.H. Tong * 1Department of Earth and Planetary Sciences, Birkbeck, University of London, Malet Street, London WC1E 7HX, UK *E-mail: vincent.tong@ucl.ac.uk. Search for other works by this author on: GSW Google Scholar C. Lana; C. Lana 2Department of Geology, University of Stellenbosch, Private Bag X1, Matieland 7620, South Africa Search for other works by this author on: GSW Google Scholar Y.R. Marangoni; Y.R. Marangoni 3Instituto de Astronomia, Geofisica e Ciencias Atmosfericas, USP Rua do Matao, 1226, Cidade Universitaria, Sao Paulo, SP 05508-090, Brazil Search for other works by this author on: GSW Google Scholar V.R. Elis V.R. Elis 3Instituto de Astronomia, Geofisica e Ciencias Atmosfericas, USP Rua do Matao, 1226, Cidade Universitaria, Sao Paulo, SP 05508-090, Brazil Search for other works by this author on: GSW Google Scholar Author and Article Information C.H. Tong * 1Department of Earth and Planetary Sciences, Birkbeck, University of London, Malet Street, London WC1E 7HX, UK C. Lana 2Department of Geology, University of Stellenbosch, Private Bag X1, Matieland 7620, South Africa Y.R. Marangoni 3Instituto de Astronomia, Geofisica e Ciencias Atmosfericas, USP Rua do Matao, 1226, Cidade Universitaria, Sao Paulo, SP 05508-090, Brazil V.R. Elis 3Instituto de Astronomia, Geofisica e Ciencias Atmosfericas, USP Rua do Matao, 1226, Cidade Universitaria, Sao Paulo, SP 05508-090, Brazil *E-mail: vincent.tong@ucl.ac.uk. Publisher: Geological Society of America Received: 15 Jun 2009 Revision Received: 06 Aug 2009 Accepted: 12 Aug 2009 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2010 Geological Society of America Geology (2010) 38 (1): 91–94. https://doi.org/10.1130/G30459.1 Article history Received: 15 Jun 2009 Revision Received: 06 Aug 2009 Accepted: 12 Aug 2009 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation C.H. Tong, C. Lana, Y.R. Marangoni, V.R. Elis; Geoelectric evidence for centripetal resurge of impact melt and breccias over central uplift of Araguainha impact structure. Geology 2010;; 38 (1): 91–94. doi: https://doi.org/10.1130/G30459.1 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 We present five profiles from electrical resistivity tomography (ERT), with surface constraints and gravity data, in the central uplift of the Araguainha impact structure in central Brazil. The central uplift, the overlying polymict breccias, and decameter-scale impact melt rocks are characterized by contrasting ranges of electrical resistivity. Our resistivity model provides empirical evidence that supports the existing model in which impact melt and breccias resurged toward the crater center in the final stages of the cratering process. On the basis of our results from the first use of ERT in impact cratering studies, we conclude that the deposition and flow of impact melt and breccias over the central uplift were influenced by the geometry of the lithologic boundaries in the central uplift. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.