Radiometric Study in the Putlur and Yellanur Mandals of Ananthapur District, Andhra Pradesh

Structural analysis using ground radiometric investigations over parts of western part of Cuddapah basin in Putlur and Yellanur mandals of Ananthapur District, A. P. , was carried out to highlight the structures and influence the effects of such features, the tectonics events in the study area. Analytical technique like low pass filter and Vertical Derivative and tilt derivative techniques brought out radiometric highs and lows and lineaments. The radiometric lineaments aligned in 3 major directions mainly, NW-SE, NE-SW and N-S, and E-W trends are very few. Derived lineaments from these maps generated structural wealth of the map. This area is structurally disturbed and where there is shales area present the radiometric response low and where sill bodies expected area the radiometric response high comparatively with shales.