Quartzites of the Cuddapah Group and Their Environment of Deposition

Quartzites occurring at different stratigraphic levels in the Proterozoic Cuddapah Group are studied for petrography, chemistry and grain size distribution for purposes of comparison and determination of the environment of deposition. It is indicated that these formations were laid down in a beach environment and that they were subjected to tectonic disturbances before the Srisailam sediments were deposited. This resulted in the less mature nature of the Srisailam quartzites compared to all other quartzites underlying it.