Monday, November 09, 2009

NftFC #1: Assembling West Gondwana in the Neoproterozoic: Clues from the São Francisco craton region, Brazil

ResearchBlogging.orgThis paper summarizes the assembly of the various mesoproterozoic blocks into West Gondwanaland. In this model, The SaoFrancisco/Congo craton first collides with the Rio de la Plata craton around 730 MA. This combined Sf-C-RdlP craton then collides with the Amazonia/ W. Africa craton at around 630 MA, sandwiching and deforming the Borborema terrane, and causing internal deformation in the SF-C-PdlP block. The ~Cambrian assembly of West and East Gondwana into Gondwanaland is not discussed.

Since all of these events postdate my rocks of interest by hundreds of millions of years, I read it uncritically for a general overview, rather than for any particular piece of information.

1. Fernando F. Alkmim, 2. Stephen Marshak, & 3. Marco A. Fonseca (2001). Assembling West Gondwana in the Neoproterozoic: Clues from the São Francisco craton region, Brazil Geology, 29 (4), 319-322

No comments: