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The Cariris Velhos Event in the Borborema Province; integration of data, implications and perspectives


, : The Cariris Velhos Event in the Borborema Province; integration of data, implications and perspectives. Revista Brasileira de Geociencias 25(4): 279-296

The Borborema Province had always been envisaged as a Brasiliano unit, and really it is it, in despite of the lack of data for the age of their supracrustal rocks. A polycyclical behavior of evolution has always been admitted for this region, based only on Rb-Sr and K-Ar data. This paper is focussing the impact on the regional geological knowledge caused by the introduction during this decade of geochronological determinations with U-Pb and Sm-Nd methods, as well as it will emphasize the coherence of the obtained results with these methods and some preexisting Rb-Sr ages (some new Rb-Sr data will be added), specially on orthogneisses. It was based on Rb-Sr data that the occurrence of an Wilson Cycle could firstly be pointed now out for this region, southwards of Patos lineament. This cycle, henceforth being postulated and named as "Cariris Velhos" (name of a very large physiographic part of the Northeast, where these new data are conspicuous) displays lithogenetic records from the Late Mesoproterozoic (ca. 1100 Ma, rifting processes) up to the beginnings of the Neoproterozoic (ca. 950 Ma, late collisional events). Superposition of a complex orogenic history (post -950 Ma) is recognized all over the province, to which the name of Brasiliano Cycle is usually attributed, what is now demanding be reviewed, as well as all their steps have to be discriminated. The identification of Cariris Velhos Cycle brings strong implications to the regional knowledge, and to the continental evolution--possibilities of correlation with "Occidentalia" and Sunsas-Aguapei, Mesoproterozoic terranes of the western part of the continent. This is also true in terms of the worldwide evolution of the continental landmasses (Grenville orogeny, Rodinia, Pannotia and Gondwana supercontinents). Such facts, from now on, are opening an wide fan of questions and research lines for the Borborema Province.

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Other references

Khodorevskaya L.I.; Zharikov V.A., 1997: Experimental problems of mantle and magmatism; experimental study of amphibolite melting in connection with tonalite-trondhjemite magmatic series genesis. Pages 11-31:

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