Abstract

Pennar Basin aligned along the coastal tract of Andhra Pradesh in India, is juxtaposed with the southern extremity of prospective Krishna Godavari Basin. The basin exhibits extensional tectonic set up with typical half graben geometry and normal listric faulting. The basin underwent two major tectonic cycles during its evolution; one in Early Permian and the other in Late Jurassic. It evolved concurrently with southern Palar Basin, during the initial cycle of Permian, later got more clearly dif erentiated with the up-liftment of Nayudupeta ridge during Late Jurassic.