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Geophysical analysis of Catalão I alkaline-carbonatite complex in Goiás, Brazil

2015; Wiley; Volume: 64; Issue: 1 Linguagem: Inglês

10.1111/1365-2478.12283

1365-2478

Fabrizia Mantovani, Vinicius Hector Abud Louro, Vanessa Biondo Ribeiro, Henrique S. Requejo, Roberto Paulo Zanon dos Santos,

Geochemistry and Geologic Mapping

Geophysical ProspectingVolume 64, Issue 1 p. 216-227 Original Article Geophysical analysis of Catalão I alkaline–carbonatite complex in Goiás, Brazil M.S.M. Mantovani, M.S.M. Mantovani Rua do Matão, 1226, Cidade Universitária, São Paulo, SP, 05508-090 BrazilSearch for more papers by this authorV.H.A. Louro, Corresponding Author V.H.A. Louro Rua do Matão, 1226, Cidade Universitária, São Paulo, SP, 05508-090 BrazilE-mail: [email protected]Search for more papers by this authorV.B. Ribeiro, V.B. Ribeiro Rua do Matão, 1226, Cidade Universitária, São Paulo, SP, 05508-090 BrazilSearch for more papers by this authorH.S. Requejo, H.S. Requejo Rua Barão do Triunfo, 550, cj. 56, Campo Belo, São Paulo, SP, 04602-002 BrazilSearch for more papers by this authorR.P.Z. dos Santos, R.P.Z. dos Santos Rua do Matão, 1226, Cidade Universitária, São Paulo, SP, 05508-090 BrazilSearch for more papers by this author M.S.M. Mantovani, M.S.M. Mantovani Rua do Matão, 1226, Cidade Universitária, São Paulo, SP, 05508-090 BrazilSearch for more papers by this authorV.H.A. Louro, Corresponding Author V.H.A. Louro Rua do Matão, 1226, Cidade Universitária, São Paulo, SP, 05508-090 BrazilE-mail: [email protected]Search for more papers by this authorV.B. Ribeiro, V.B. Ribeiro Rua do Matão, 1226, Cidade Universitária, São Paulo, SP, 05508-090 BrazilSearch for more papers by this authorH.S. Requejo, H.S. Requejo Rua Barão do Triunfo, 550, cj. 56, Campo Belo, São Paulo, SP, 04602-002 BrazilSearch for more papers by this authorR.P.Z. dos Santos, R.P.Z. dos Santos Rua do Matão, 1226, Cidade Universitária, São Paulo, SP, 05508-090 BrazilSearch for more papers by this author First published: 21 June 2015 https://doi.org/10.1111/1365-2478.12283Citations: 11Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat ABSTRACT The Catalão I alkaline–carbonatite complex, which is located in Central Brazil, is one of the main producers of niobium and phosphates in the world. It has been intensely studied geologically and geochemically for its economic potential. This work presents a geophysical analysis over this complex, identifying its behaviour in the subsurface and in portions that have not been explored yet. Different geophysical methods and techniques were applied to achieve the most reliable results possible: at the surface, through radiometric, geological, and topographic data, and at depth, by geological, magnetic, and gravimetric data. The analysis was successfully completed with inversions of gravity and magnetic data that resulted in quite similar models, both in volume and shape. Their density and magnetic susceptibility contrasts were consistent with the expected dunite–pyroxenite lithology from the original mafic intrusion and indicated (by exclusion) the volume of the carbonatite body, which along with the known contents of phosphates and niobium allowed an indirect estimate of the reserves and resources of the complex. Citing Literature Volume64, Issue1January 2016Pages 216-227 RelatedInformation