Results and Discussion
Geology: The Tuticorin area 90% is made up of sedimentary rocks of Tertiary to Recent age comprising of Shell limestone and Sand, Tuffaaceous Kankar, Sand (Aeolian deposits) etc.,
and the remaining area is covered by mixed and composite Genesis of proterozoic age of crystalline rocks (figure 2). The Archaean groups of formation are crystalline and metamorphic and finely foliated with general NW-SE trend described by Balasubramanian et al and Selvam19,6. The general Tuticorin district stratigraphic succession is presented below (table-1).