Structural features of the São Francisco de Assis region, RS, Brazil
DOI:
https://doi.org/10.5902/2179460X24839Abstract
This work focuses on the structural features of the São Francisco de Assis region, in the western part of Rio Grande do Sul State, Brazil. An outstanding anticline was determined, having in the southwest a parallel syncline and na other anticline, both of them with low inclination and plunging to the northwest.
The structural ondulations are formed not only by inclination beds, but by fault blocks. Diabase sills and dikes were formed near the principal lines of weakness.
The structures are of the Cretaceous age and are associated with the Sul-rio-Grandense Arch, formed during the Wealdenian reactivation.
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ALMEIDA, F.F.M. Diferenciação tectônica da Plataforma. Brasileira. In: CONGRESSO BRASILEIRO DE GEOLOGIA, 239, Salvador,1969.Anais... Salvador, SBG, 1969, p.31-46.
AMARAL, G.; CORDANI, V.G.; KAWASSHITA, K.;REYNOLDS, J.H."Potassium argon ages of basaltic rocks from Southern Brazil" .Geoch, Cosmoch, Acta.30 (2): 159-189, 1966.
BORTOLUZZI, C.A. Contribuição á geologia da região de Santa Maria, Rio Grande do Sul, Brasil. Pesquisa., Porto Alegre, UFRGS,(4): 7-86, 1974.
BEURLEN, K.;SENA SOBRINHO, M.;MARTINS, K. Formações gondwãnicas do Rio Grande do Sul. B. Mus. Nac. Ser. Geol. (22): 1-55, 1955.
CAMPOS, L.F.G. de Relatório da Comissão Geográfica e Geológica de São Paulo. São Paulo, 1889, p.21-34.
CARRARO, C.C.;EICK, N.C.;GAMERMANN, N. O Domo de Itu. Porto Alegre, Instituto de Geociências da UFRGS, 1972. (Mapa,3).
CORDANI, U.G.; HALPERN, M.; BERENHOLC, M. Comentários sobre as determinações geocronológicas da folha de Porto Alegre. In: DEPARTAMENTO NACIONAL DA PRODUÇÃO MINERAL. Carta geológica do Brasil ao milionésimo; folha Porto Alegre SH. 22 e folha Lagoa Mirim SI.22. Brasília, 1974, p.70-84.
COSTANZO JUNIOR, J.; VIRGILI, J.C. ;MACIEL FILHO, C.L. "Contribuição á cartografia geotêcnica da região de Santa Maria (RS)". In: CONGRESSO BRASILEIRO DE GEOLOGIA DE ENGENHARIA, 29, São Paulo, 1978. Anais... São Paulo, ABGE, 1978, 1: 267-280.
DELANEY, P.J.V. & GONI, J.C. Correlação preliminar entre as formações gondwãnicas do Uruguai e do Rio Grande do Sul, Brasil. B. Par. Geogr, Curitiba, (8/9): 3-21, 1963.
GAMERMANN, N. Formação Rosário do Sul. Pesquisa., UFRGS Porto Alegre, (2): 5-35, 1973.
GORDON JUNIOR, M. Classification of the Gondwanic rocks of Paraná, Santa Catarina and Rio Grande do Sul. Notas Prelimin. Est., Rio de Janeiro, DGM, (54): 1-7, 1947.
LOCZY, L. & LADEIRA, E.A. Geologia estrutural e introdução à Geotectônica. São Paulo, Ed. Edgard Blücher - CNPq, 1976, 528p.
MACIEL FILHO, C.L.; MENEGOTTO, E.; SARTORI, P.L. Geologia do Município de São Francisco de Assis, RS. Santa Maria, Depto Geociências, UFSM, 1971, 29p. (Publ. esp., 4).
NORTHFLEET, A.A.; MEDEIROS, R.A.; MUHLMANN, H. Reavaliação dos dados geológicos da Bacia do Paraná. B. Tec. Petrobrás, Rio de Janeiro, 12 (3): 291-346, 1969.
OLIVEIRA, M.A.M. Possibilidades de geração e migração tardias de petróleo na Bacia do Paraná. In: CONGRESSO BRASILEIRO DE GEOLOGIA, 259, São Paulo, 1971. Anais... São Paulo, 1971, SBG,1971, 3: 139-158.
PARAGUASSU, A.B. Experimental silicification of sandstone. Geol, Soc. Am. Bull. 83: 2853-2858.
PICADA, R.S. Ensaio sobre a tectônica do Escudo Sul-Riograndense Caracterização dos sistemas de falhas. In: CONGRESSO BRASILEIRO DE GEOLOGIA, 259, São Paulo, 1971, Anais... São Paulo,SBG, 1971,1: 167-191.
PINTO, J.F.; VILLWOCK, J.A.; LOSS,E.L. Relatório da geologia da província alcalina do Rio Grande do Sul, folhas Arroio Barracão e Arroio da Bica. Porto Alegre, Inst. Geoc. UFRGS, MME, DNPM, MEC, 1975, 48 p.
RAMOS, A.N. & FORMOSD, M.L.L. Argilominerais das rochas sedimentares da Bacia do Paraná. Rio de Janeiro, Petrobrás, 1975,77p. il. (Petrobrás, serie Ciência-Técnica-Petróleo, seção: Exploração de Petróleo, 9).
REGO, L.F.M. A geologia do Petróleo no Estado de São Paulo. B. Ser. Geol. Mine., Rio de Janeiro, (46), 1930.
RIBEIRO, M. Uma província alcalina no Rio Grande do Sul. I.Estudos preliminares. Iheringia. Geologia, Porto Alegre, (1) :59-71 , 1971 .
SANFORD, R.M. & LANGE, F.W. Basin-study approach to oilevolutionof Paraná miogeosyncline, South Brazil. Am.Ass.Petr.Geol. Bull., Tulsa, 44 (8): 1316.1370.
SARTORI, P.L. & MACIEL FILHO, C.L. Petrografia da sequência vulcânica da Formação Serra Geral no rebordo ocidental do Planalto Meridional, RS. In: CONGRESSO BRASILEIRO DE GEOLOGIA, 299, Belo Horizonte, 1976, Anais... (no prelo).
SARTORI, P.L.;MACIEL FILHO, C.L.;MENEGOTTO, E. Contribuição ao estudo das rochas vulcânicas da Bacia do Paraná na região de Santa Maria. RS.Rev. Bras. Geoc, São Paulo, 5(3): 141-159,1975.
SCHOBBENHAUS FILHO, C., comp. Carta geológica do Brasil ao milionésimo; folha Porto Alegre (SH.22) e folha Lagoa Mirim(SI.22) Brasília, 1974.
SCHOBBENHAUS FILHO, C., comp. Carta geológica do Brasil ao milionésimo; folha Uruguaiana (SH.21). Brasília, DNPM, 1974.
WERNICK, e: A silicificação do Arenito Botucatu na quadrícula de Rio Claro, Estado de São Paulo. Av.Div.Geol.Miner. Rio de Janeiro, (40), 1965.
WHITE, I.C. Relatório sobre as “coal measures” e rochas associadas do Sul do Brasil. In: Relatório final da Comissão de Estudos das Minas de Carvão. s .1.p., 1908, parte 1, geologia, p. 1-201.
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