Geochemical analysis for the Mesoproterozoic clastic sedimentary rocks of the basal Gulcheru Formation of the Cuddapah Basin
in the Gugudu-Dadithota-Parnapalle-Palkonda region (extending atleast 40 km) have been performed to highlight their provenance
and weathering history. The low K
2O/Al
2O
3 ratios of the representative samples points to the recycled nature of sediments and illite clay in the sediments indicate
an overall cold climate (low chemical weathering degree). All the provenance diagrams indicate a mixed source of the Gulcheru
sediments with felsic dominancy and Upper continental crust (UCC) signature.
Keywords Mesoproterozoic - Provenance - Chemical index of alteration - Tectonic discrimination diagram