TECTONIC EVOLUTION OF TERRAINS BETWEEN THE DOM FELICIANO AND RIBEI-RA BELTS (SOUTHERN-BRAZIL). This paper discusses the tectonic interpretation of the late Pre-Cambrian to lower Paleozoic Terrains of the states of Paraná and Santa Catarina in southern Brazil. The abandoning of the term "Median Joinville Massif" is proposed. It is substituted by three tectonic units recognised hi this region: Curitiba Microplate (north), Luís Alves Microplate (south) and Costeiro Granitoid Belt (east). Lithological, geochcmical and gcochronological data obtained in these terrains confirm their differences and allow the separation of the three units proposed whose agglutination took place during the Brasiliano and Rio Doce Orogenies between 650 and 550 Ma ago produced by subductions and collisions related to the assemblage of Gondwana.RESUMO Este trabalho apresenta uma interpretação da evolução geotectônica de terrenos pré-cambrianos a eopaleozóicos situados entre os Cinturões Ribeira (norte) e Dom Feliciano (sul), nos Estados do Paraná e Santa Catarina. É proposto o abandono do termo Maciço Mediano de Joinville e sua substituição por três unidades que representam esses terrenos: Microplaca Curitiba (norte), Microplaca Luís Alves (sul) e Cinturão Granitóide Costeiro (leste). Diferenças litológicas, estruturais, geoquímicas e geocronológicas entre as rochas que constituem essas unidades consubstanciam a individuatização dessas três entidades, cuja aglutinação deu-se somente ao final do Proterozóico Superior e início do Paleozóico Inferior durante as orogeneses Brasiliana (clímax a 65O ± 50 Ma) e Rio Doce (clímax a 550 ± 50Ma), corno produto de sucessivas subducções e colisões relacionadas à constituição do supercontinente Gondwana.
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