Sedimentological Studies of Pakhal Sediments from Pakhal Lake Area, Warangal District, A.P.

Sedimentological studies of the Pakhal sediments in the Pakhallake area have been made with a view to understand the environmental conditions of deposition of these rocks which belong to the Precambrian age. Textural properties like grain size, roundness and sphericity have been determined from thin section studies of clastic rocks like quartzose sandstones and orthoquartzites.

The statistical parameters calculated from the formulae suggested by Folk and Ward and their possible geological significance have been discussed. From the basic C. M. patterns of Passega, it has been found that the clastic sediments were deposited in a beach environment acted upon by tractive currents. The Pakhal sediments in this region had their provenance from the granitic rocks and the quartz-magnetite rocks which lie to the west of the Pakhal basin, and were deposited on the beaches and were shifted to the neritic zone of environment.