Skip to Main Content
Skip Nav Destination

The intracratonic Paleozoic Parnaíba Basin, NE Brazil covers c. 600 000 km2. Lithostratigraphic, mineralogical and geochemical approaches were used to deduce the changing environments of deposition of the Parnaíba Basin based on 150, mostly argillite, samples (Silurian–earliest Triassic). The results indicate that brackish conditions and mixed kerogen sources were important and that the palaeowater depth and sources of meteoric water varied from west to east. The chemical index of alteration results, together with other elemental and mineralogical data, indicate that the western margin was humid until the end of the Carboniferous and then became arid, whereas...

You do not currently have access to this chapter.

Figures & Tables




Citing Books via

Close Modal

or Create an Account

Close Modal
Close Modal