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Geophysical Characterization of a Potentially Mineralized Target in Copper Sulfides in the Northwest Limit of Camaquã Basin, Brazil

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Abstract

This work describes the reconnaissance and detailed phases of a potential copper sulfide mineralized target situated between the Sul-Riograndense Shield and the Camaquã Basin. The study area comprises the Victor Teixeira and the Capão Grande copper occurrences. These were recognized and catalogued in the 1960s by the Brazilian Department of Mining Production (DNPM in Portuguese) in the countryside of Caçapava do Sul, Rio Grande do Sul State, Brazil. These occurrences are delimited in the surface by malachite and azurite disseminated mineralizations which fill fractures and sandstone and schist pores. The initial phase of reconnaissance involved a gravimetric survey that revealed an anomaly with high amplitude between the copper occurrences. The forward modeling of this anomalous peak showed a body with significant density, which was related to chalcocite, and motivated the use of resistivity and induced polarization in the detailed phase. Our data were associated with a conductive body and three resistive and three polarized bodies. The correlation between the conductive and the polarized bodies (situated below 60 m) was associated with sulfides in the subsurface. The resistive bodies situated above the polarized ones were attributed to silicified portions in the country rocks. The combination of procedures based on the geophysical analysis in an area delimited by structural and metallogenetic control showed efficiency in the prospect of the buried target, which is a common paradigm in current minerals research.

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Modified from CPRM (1995)

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References

  • Almeida FFM (1967) Origem e evolução da Plataforma Brasileira. Bulletin of the National Department of Mineral Production (DNPM) 241:1–36.

  • Almeida, R. P. (2005). Tectônica e sedimentação do Ediacarano ao Ordoviciano: exemplos do Supergrupo Camaquã (RS) e do grupo Caacupé (Paraguai Oriental). Doctoral Thesis, University of São Paulo (USP), São Paulo, p 216.

  • Almeida, F. F. M., Hasui, Y., de Brito Neves, B. B., & Fuck, R. A. (1981). Brazilian structural provinces: An introduction. Earth-Science Reviews, 17(1–2), 1–29. https://doi.org/10.1016/0012-8252(81)90003-9

    Article  Google Scholar 

  • Almeida, R. P., Janikian, L., Fragoso-Cesar, A. R. S., & Marconato, A. (2009). Evolution of a rift basin dominated by subaerial deposits: The Guaritas Rift, Early Cambrian Southern Brazil. Sedimentary Geology, 217(1–4), 30–51. https://doi.org/10.1016/j.sedgeo.2009.01.010

    Article  Google Scholar 

  • Almeida, R. P., Janikian, L., Fragoso-Cesar, A. R., & Fambrini, G. L. (2010). The ediacaran to cambrian rift system of southeastern South America: tectonic implications. The Journal of Geology, 118(2), 145–161. https://doi.org/10.1086/649817

    Article  Google Scholar 

  • Bitencourt, J. C., Lima, J. P. R., Hansen, M. A. F., Pereira, H. G., & Moreira, C. A. (2020). Aplicação de método eletromagnético terrestre de investigação rasa numa ocorrência cuprífera localizada no interior do município de Caçapava do Sul (RS). Geociências, 39(2), 379–391. https://doi.org/10.5016/geociencias.v39i2.13158

    Article  Google Scholar 

  • Borba, A. W. (2006). Evolução geológica da “Bacia do Camaquã” (Neoproterozoico e Paleozoico Inferior do Escudo Sul-rio-grandense, RS, Brasil): Uma visão com base na integração de ferramentas de estratigrafia, petrografia e geologia isotópica. Doctoral Thesis, University of Rio Grande do Sul (UFRGS), Porto Alegre, p 121.

  • Briggs, I. C. (1974). Machine contouring using minimum curvature. Geophysics, 39(1), 39–48. https://doi.org/10.1190/1.1440410

    Article  Google Scholar 

  • Carvalho, P. F. (1932). Reconhecimento geológico no estado do Rio Grande do Sul. Bulletin of the National Department of Mineral Production (DNPM), 66, 1–73.

  • Chatterjee, K. K. (2007). Uses of Metals and Metallic Minerals. New Age International Publishers.

    Google Scholar 

  • Chemale, F., Jr. (2000). Evolução Geológica do Escudo Sul-rio-grandense. In M. Holz & L. F. De Ros (Eds.), Geologia do Rio Grande do Sul (pp. 13–52). CIGO/UFRGS.

    Google Scholar 

  • Côrtes, A. R. P., Moreira, C. A., Veloso, D. I. K., Vieira, L. B., & Bergonzoni, F. A. (2016). Geoelectrical prospecting for a copper sulfide mineralization in the Camaquã sedimentary basin Southern Brazil. Geofísica Internacional, 55(3), 165–174. https://doi.org/10.22201/igeof.00167169p.2016.55.3.1719

    Article  Google Scholar 

  • Cortês, A. R. P., Moreira, C. A., Paes, R. A. S., & Veloso, D. I. K. (2019). Geophysical and metallogenetic modelling of the copper occurrence in Camaquã Sedimentary Basin, Brazilian Southern. Pure and Applied Geophysics, 176, 4955–4968. https://doi.org/10.1007/s00024-019-02190-8

    Article  Google Scholar 

  • CPRM Brazilian Geological Survey. (1995). Passo do Salsinho, Folha SH.22-Y-A-I-4: Estado do Rio Grande do Sul. Programa Levantamentos Geológicos Básicos do Brasil, Projeto Mapeamento Geológico e Metalogenético

  • CPRM Brazilian Geological Survey. (2000). Cachoeira do Sul: folha SH22-Y-A: estado do Rio Grande do Sul. Programa Levantamentos Geológicos Básicos do Brasil, 1–147.

  • CPRM Brazilian Geological Survey. (2007). Mapa geológico do Estado do Rio Grande do Sul. Programa Geologia do Brasil Projeto Geologia do Brasil ao Milionésimo.

    Google Scholar 

  • Dentith, M., & Mudge, S. T. (2014). Geophysics for the mineral exploration geoscientist. Cambridge University Press. https://doi.org/10.1017/CBO9781139024358

    Book  Google Scholar 

  • Fernandes, L. A. D., Menegat, R., Costa, A. F. U., Koester, E., Porcher, C. C., Tommasi, A., Kraemer, G., Ramgrab, G. E., & Camozzato, E. E. (1995). Evolução tectônica do Cinturão Dom Feliciano no Escudo Sul-Rio-grandense: Parte I. Uma contribuição a partir do registro geológico. Revista Brasileira De Geociências, 25(4), 351–374.

    Article  Google Scholar 

  • Fontana, E. (2016). Hidrotermalismo e mineralizações das rochas vulcânicas da mina do Seival: evolução geoquímica e isotópica (δ34S, δ18O e δ13C) dos fluidos e sua correlação com outros depósitos de minérios epitermais da Bacia do Camaquã—Rio Grande do Sul—Brasil. Doctoral Thesis, University of Rio Grande do Sul (UFRGS), Porto Alegre, p 201.

  • Fragoso-Cesar, A. R. S. (1991). Tectônica de placas no Ciclo Brasiliano: as orogenias dos cinturões Dom Feliciano e Ribeira no Rio Grande do Sul. Doctoral Thesis, University of São Paulo (USP), São Paulo, p 387.

  • Fragoso-Cesar, A. R. S., Fambrini, G. L., Almeida, R. P., Pelosi, A. P. M. R., Janikian, L., Riccomini, C., Machado, R., Nogueira, A. C. R., & Saes, G. S. (2000). The Camaquã extensional basin: neoproterozoic to early cambrian sequences in Southernmost Brazil. Revista Brasileira De Geociências, 30(3), 442–445.

    Article  Google Scholar 

  • Fries, M., Zago, M. M., & da Silva, F. G. (2020). A geophysical study contributing to analysis and characterization of a localized copper occurrence. Journal of Applied Geophysics, 179, 104129. https://doi.org/10.1016/j.jappgeo.2020.104129

    Article  Google Scholar 

  • Geosoft. (2019). Oasis Montaj Software for earth science mapping and processing. Geosoft Incorporation Ltd.

    Google Scholar 

  • Geotomo. (2003). RES2DINV (version 3.52), Rapid 2-D Resistivity and IP inversion using the least-squares method. Geotomo Software.

    Google Scholar 

  • Guilbert, J. M., & Park, C. F., Jr. (2007). The geology of ore deposits. Waveland Press Inc.

    Google Scholar 

  • Harres, M. M. (2000). Minas do Camaquã (Caçapava do Sul, RS): A exploração do cobre no Rio Grande do Sul. In L. H. Ronchi & A. O. C. Lobato (Eds.), Minas do Camaquã: um estudo multidisciplinary (pp. 21–53). Unisinos.

    Google Scholar 

  • Heiskanen, W., & Moritz, H. (1967). Physical Geodesy. Freeman and Campany.

    Google Scholar 

  • IBGE—Instituto Brasileiro de Geografia e Estatística. (2018). Banco de dados geodésicos—Relatório de estação geodésica. http://www.bdg.ibge.gov.br/bdg/pdf/relatorio.asp?L1=8112593. Accessed 02 Mar 2018.

  • Janikian, L., Almeida, R. P., Fragoso-Cesar, A. R. S., Corrêa, C. R. A., & Pelosi, A. P. M. R. (2005). Evolução Paleoambiental e Sequências Deposicionais do Grupo Bom Jardim e da Formação Acampamento Velho (Supergrupo Camaquã) na Porção Norte da Sub-Bacia Camaquã Ocidental. Revista Brasileira De Geociências, 35(2), 245–256.

    Article  Google Scholar 

  • Kane, M. F. (1962). A comprehensive system of terrain corrections using a digital computer. Geophysics, 27(4), 455–462. https://doi.org/10.1190/1.1439044

    Article  Google Scholar 

  • Kearey, P., Brooks, M., & Hill, I. (2002). An Introduction to Geophysical Exploration (3rd ed.). Blackwell Science Ltd.

    Google Scholar 

  • Koppe, J. C. (1990). Metalogênese do ouro da Mina da Bossoroca, São Sepé, RS. Doctoral Thesis, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, p 289.

  • Leinz, V., Barbosa, A., & Teixeira, E. (1941). Mapa Geológico Caçapava-Lavras. Bulletin of the National Department of Mineral Production (DNPM), 90, 1–39.

  • Lowrie W. (2007). Fundamentals of Geophysics. Cambridge University Press https://doi.org/10.1017/CBO9780511807107

  • Marjoribanks, R. (2010). Geological Methods in Mineral Exploration and Mining. Springer. https://doi.org/10.1007/978-3-540-74375-0

    Book  Google Scholar 

  • Marquardt, D. W. (1963). An algorithm for least-squares estimation of nonlinear parameters. Journal of the Society for Industrial and Applied Mathematics, 11, 431–441. https://doi.org/10.1137/0111030

    Article  Google Scholar 

  • Matté, V., Sommer, C. A., Lima, E. F., Saldanha, D. L., Pinheiro-Sommer, J. A., & Liz, J. D. (2012). Rochas dioríticas do Platô da Ramada, Rio Grande do Sul, e sua relação com o vulcanismo alcalino da Formação Acampamento Velho, Neoproterozoico do Escudo Sul-RioGrandense. Revista Brasileira De Geociências, 42(2), 343–362. https://doi.org/10.5327/Z0375-75362012000200010

    Article  Google Scholar 

  • Mexias, A. S., Bongiolo, E. M., Gomes, M. E. B., Formoso, M. L. L., & Frantz, J. C. (2007). Alterações hidrotermais e mineralizações nas rochas da associação plutono-vulcano-sedimentar da região de Lavras do Sul-RS. In R. Iannuzzi & J. C. Frantz (Eds.), 50 anos de Geologia (pp. 145–159). Instituto de Geociências Contribuições Comunicação e Identidade.

    Google Scholar 

  • Milligan, P. R., & Gunn, P. J. (1997). Enhancement and presentation of airborne geophysical data. AGSO Journal of Australian Geology & Geophysics., 17(2), 63–75.

    Google Scholar 

  • Milsom, J. (2003). Field geophysics (3rd ed.). Wiley.

    Google Scholar 

  • Misra, K. C. (2000). Understanding Mineral Deposits. Springer Nature. https://doi.org/10.1007/978-94-011-3925-0

    Book  Google Scholar 

  • Moon, C. J., Whateley, M. E. G., & Evans, A. M. (2006). Introduction to Mineral Exploration. Backwell Publishing.

    Google Scholar 

  • Moreira, C. A., & Ilha, L. M. (2011). Prospecção geofísica em ocorrência de cobre localizada na bacia sedimentar do Camaquã (RS). REM International Engineering Journal, 64(3), 305–311. https://doi.org/10.1590/S0370-44672011000300008

    Article  Google Scholar 

  • Moreira, C. A., Lopes, S. M., Schweig, C., & Seixas, A. R. (2012). Geoelectrical prospection of disseminated sulfide mineral occurrences in Camaquã Sedimentary Basin, Rio Grande do Sul State, Brazil. Brazilian Journal of Geophysics, 30(2), 169–179. https://doi.org/10.22564/rbgf.v30i2.90

    Article  Google Scholar 

  • Moreira, C. A., Borssatto, K., Ilha, L. M., Dos Santos, S. F., & Rosa, F. T. G. (2016). Geophysical modeling in gold deposit through DC resistivity and induced polarization methods. REM International Engineering Journal, 69(3), 293–299. https://doi.org/10.1590/0370-44672016690001

    Article  Google Scholar 

  • Moreira, C. A., Paes, R., Ilha, L. M., & Bittencourt, J. C. (2018). Reassessment of copper mineral occurrence through electrical tomography and pseudo 3D modeling in Camaquã Sedimentary Basin Southern Brazil. Pure and Applied Geophysics, 176(2), 737–750. https://doi.org/10.1007/s00024-018-2019-2

    Article  Google Scholar 

  • Moreira, C. A., Dos Santos, E. G., Ilha, L. M., & Paes, R. (2019). Recognition of sulfides zones in marble mine through comparative analysis of electrical tomography arrangements. Pure and Applied Geophysics, 176, 4907–4920. https://doi.org/10.1007/s00024-019-02243-y

    Article  Google Scholar 

  • Mussett, A. E., & Khan, M. A. (2000). Looking into the Earth: An Introduction to Geological Geophysics. Cambridge University Press. https://doi.org/10.1017/CBO9780511810305

    Book  Google Scholar 

  • Nagy, D. (1966). The gravitational attraction of a right rectangular prism. Geophysics, 31, 362–371. https://doi.org/10.1190/1.1439779

    Article  Google Scholar 

  • Paim, P. S. G., Chemale, F., & Lopes, R. C. (2000). A Bacia do Camaquã. In M. Holz & L. F. De Ros (Eds.), Geologia do Rio Grande do Sul (pp. 231–274). CIGO/UFRGS.

    Google Scholar 

  • Pelosi, A. P. M. R., & Fragoso-Cesar, A. R. S. (2003). Proposta litoestratigráfica e considerações paleoambientais sobre o Grupo Maricá (Neoproterozoico III), Bacia do Camaquã, Rio Grande do Sul. Revista Brasileira De Geociências, 33(2), 137–148.

    Article  Google Scholar 

  • Pereira, H. G., Moreira, C. A., & Camarero, P. L. (2017). Correlação de dados geofísicos em pesquisa mineral de ocorrência de cobre em Caçapava do Sul (RS). Geociências, 36(4), 717–729. https://doi.org/10.5016/geociencias.v36i4.11388

    Article  Google Scholar 

  • Pereira, R. M. (2003). Fundamentos de Prospecção Mineral. Editora Interciência Ltda.

    Google Scholar 

  • Peters, W. C. (1987). Exploration and mining geology. John Wiley.

    Google Scholar 

  • Pirajno, F. (1992). Hydrothermal Mineral Deposits: Principles and Fundamental Concepts for the Exploration Geologist. Springer. https://doi.org/10.1007/978-3-642-75671-9

    Book  Google Scholar 

  • Remus, M. V. D., Mcnaughton, N. J., Hartmann, L. A., Koppe, J. C., Fletcher, I. R., & Groves, D. I. (1999). Gold in the Neoproterozoic juvenile Bossoroca Volcanic Arc of southernmost Brazil: isotopic constraints on timing and sources. Journal of South American Earth Sciences, 12, 349–366. https://doi.org/10.1016/S0895-9811(99)00026-7

    Article  Google Scholar 

  • Remus, M. V. D., Hartmann, L. A., McNaughton, N. J., Groves, D. I., & Fletcher, I. R. (2000). The link between hydrothermal epigenetic copper mineralization and the Caçapava Granite of the Brasiliano Cycle in southern Brazil. Journal of South American Earth Sciences, 13, 191–216. https://doi.org/10.1016/S0895-9811(00)00017-1

    Article  Google Scholar 

  • Ribeiro, M. (1970). Geologia da Folha de Bom Jardim, Rio Grande do Sul, Brasil. Bulletin of the National Department of Mineral Production (DNPM), 247, 1–142.

  • Ribeiro, M., Bocchi, P. R., Figueiredo, P. M., & Tessari, R. I. (1966). Geologia da Quadrícula de Caçapava do Sul, Rio Grande do Sul, Brasil. Bulletin of the National Department of Mineral Production (DNPM), 127, 1–232.

  • Richards, J. (2009). Mining, Society, and a Sustainable World. Springer. https://doi.org/10.1007/978-3-642-01103-0

    Book  Google Scholar 

  • Ronchi, L. H., & Lobato, A. O. C. (2000). Minas do Camaquã, um estudo multidisciplinar. São Leopoldo: Unisinos.

    Google Scholar 

  • Santos, S. F., Moreira, C. A., Rosa, F. T. G., Borssatto, K., & Silva, M. A. (2018). Geoelectric prospection of copper occurrence in folding layers in the Sul-Riograndense shield (Brazil). Brazilian Journal of Geophysics, 36(3), 1–10. https://doi.org/10.22564/rbgf.v36i3.958

    Article  Google Scholar 

  • Silva, M. A., Moreira, C. A., Borssatto, K., Ilha, L. M., & Santos, S. F. (2018). Geophysical prospection in tin mineral occurrence associated to greisen in granite São Sepé (RS). REM International Engineering Journal, 71, 183–189. https://doi.org/10.1590/0370-44672017710098

    Article  Google Scholar 

  • Soliani Jr, E. (1986). Os dados geocronológicos do Escudo Sul-Rio-Grandense e suas implicações de ordem geotectônica. Doctoral Thesis, University of São Paulo (USP), São Paulo, p 417.

  • Sommer, C. A., Lima, E. F., & Nardi, L. V. S. (1999). Evolução do vulcanismo alcalino na porção sul do Platô do Taquarembó, Dom Pedrito RS. Revista Brasileira De Geociências, 29(2), 245–254.

    Article  Google Scholar 

  • Sommer, C. A., Lima, E. F., Pierosan, R., & Machado, A. (2011). Reoignimbritos e ignimbritos de alto grau do vulcanismo Acampamento Velho, RS: origem e temperatura de formação. Revista Brasileira De Geociências, 41(3), 420–435. https://doi.org/10.25249/0375-7536.2011413420435

    Article  Google Scholar 

  • Sultan, S. A., Mansour, S. A., Santos, F. M., & Helaly, A. S. (2009). Geophysical exploration for gold and associated minerals, case study: Wadi El Beida area, South Eastern Desert Egypt. Journal of Geophysics and Engineering, 6(4), 345–356. https://doi.org/10.1088/1742-2132/6/4/002

    Article  Google Scholar 

  • Talwani, M., Worzel, J. L., & Landisman, M. (1959). Rapid gravity computations for two-dimensional bodies with application to the Mendocino submarine fracture zone. Journal of Geophysics Research., 64(1), 49–59. https://doi.org/10.1029/JZ064i001p00049

    Article  Google Scholar 

  • Teixeira, A. L., Gaucher, C., Paim, P. S. G., Fonseca, M. M., Parente, C. V., Silva Filho, W. F., & Almeida, A. R. (2004). Bacias do estágio da transição da plataforma sul-americana. In V. M. Neto, A. Bartorelli, C. D. R. Carneiro, & B. B. Brito-Neves (Eds.), Geologia do Continente Sul-Americano: Evolução da Obra de Fernando Flávio Marques de Almeida (pp. 448–487). Beca.

    Google Scholar 

  • Teixeira, E. (1941). A mina de cobre de Camaquã, Rio Grande do Sul. Bulletin of the National Department of Mineral Production (DNPM), 49, 1–47.

  • Telford, W. M. W., Geldart, L. P., & Sheriff, R. E. (1990). Applied Geophysics, 2 edn. Cambridge University Press, https://doi.org/10.1017/CBO9781139167932.

  • Toniolo, J. A., Gil, C. A. A., & Sander, A. (2007). Metalogenia das bacias neoproterozóico-eopaleozóicas do Sul do Brasil: Bacia do Camaquã. Programa de Geologia do Brasil-Projeto Baneo, Porto Alegre, CPRM.

  • White, R. M. S., Collins, S., Denne, R., Hee, R., & Brown, P. (2001). A new survey design for 3D IP inversion modelling at copper hill. Exploration Geophysics, 32(3/4), 152–155. https://doi.org/10.1071/EG01152

    Article  Google Scholar 

  • Won, I. J., & Bevis, M. (1987). Computing the gravitational and magnetic anomalies due to a polygon: Algorithms and Fortran subroutines. Geophysics, 52(2), 232–238. https://doi.org/10.1190/1.1442298

    Article  Google Scholar 

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Acknowledgements

H.G. Pereira is grateful to Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES, Brazilian Ministry of Education, for the fellowship received in this research. C.A. Moreira and F.J.F. Ferreira were supported in this research by National Council for Scientific and Technological Development (CNPq, Brazil) (contracts 470821/2013-2 and 303826/2018-5, respectively). We also thank the Laboratory for Analysis of Minerals and Rocks (LAMIR) of the Federal University of Paraná and geophysics laboratories of São Paulo State University (UNESP) and Pampa Federal University (UNIPAMPA) for the technical support.

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  1. Department of Geology and Laboratory for Research in Applied Geophysics, Federal University of Paraná (UFPR), Coronel Francisco Heráclito dos Santos Avenue, 100 Jardim das Américas, Curitiba, Paraná State, 81531-980, Brazil

    Henrique Garcia Pereira, Francisco José Fonseca Ferreira & Vinicius Antunes Ferreira da Silva

  2. Department of Applied Geology, Geosciences and Exact Sciences Institute, São Paulo State University (UNESP), 24-A Avenue, 1515, Bela Vista, Rio Claro, São Paulo State, 13506-900, Brazil

    César Augusto Moreira

  3. Department of Geology, Science and Technology Institute, Federal University of Alfenas (UNIFAL), José Aurélio Vilela Highway, 11999, Cidade Universitária, Poços de Caldas, Minas Gerais State, 37715-400, Brazil

    Pedro Lemos Camarero

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Pereira, H.G., Moreira, C.A., Ferreira, F.J.F. et al. Geophysical Characterization of a Potentially Mineralized Target in Copper Sulfides in the Northwest Limit of Camaquã Basin, Brazil. Pure Appl. Geophys. 178, 3111–3130 (2021). https://doi.org/10.1007/s00024-021-02771-6

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