São Francisco Craton
It includes a number of different blocks of the Archean basement, separated by orogenic belts. The belts are characterized by sedimentary basins and passive continental margins containing granite intrusions. The Paleoproterozoic (about 2.5 to 2.0 Ga) was the source of orogenic belts and the current configuration of the craton.
The São Francisco Craton around 1.0 Ga ago was located in the south of the supercontinent Rodinia and after the fragmentation of Rodinia in the late Proterozoic (700 Ma) became a member of the supercontinent Gondwana until its fragmentation in the Jurassic (about 180 Ma). The subsequent opening of the Atlantic Ocean left South Africa in the Congo Craton and the São Francisco in South America.
The ancient Paleoproterozoic orogenic belts of the São Francisco Craton contain many economically important minerals, particularly those containing iron and gold, and are a major source of income for the mining industry in Brazil.
- Fernando F. Alkmim Stephen Marshak Marco A. Fonseca (April 2001). "Assembling West Gondwana in the Neoproterozoic: Clues from the São Francisco craton region, Brazil". Geology. 29 (4): 319–322. Bibcode:2001Geo....29..319A. doi:10.1130/0091-7613(2001)029<0319:AWGITN>2.0.CO;2.
- R.J. Pankhurst, R.A.J. Trouw, B.B. de Brito Neves, M.J. de Wit, eds. (2008). West Gondwana: Pre-Cenozoic Correlations Across the South Atlantic Region. Geological Society Special Publication. 294. London. p. 432. ISBN 978-1-86239-247-2.
- Luiz R. Bastos Leal, José C. Cunha, Umberto G. Cordani, Wilson Teixeira, Allen P. Nutman, Angela B. Menezes Leal and Moacir J. B. Macambira (January 2003). "SHRIMP U–Pb, 207Pb/206Pb zircon dating, and Nd isotopic signature of the Umburanas greenstone belt, northern São Francisco craton, Brazil" (PDF). Journal of South American Earth Sciences. 15 (7): 775–785. Bibcode:2003JSAES..15..775B. doi:10.1016/S0895-9811(02)00129-3.
- Zandt, George (Spring 2002). "Orogenic Systems: The Andes". University of Arizona.
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