WENNER ARRAY RESISTIVITY AND SP LOGGING FOR GROUND WATER EXPLORATION IN SAWERPURAM TERI DEPOSITS, THOOTHUKUDI DISTRICT, TAMIL NADU, INDIA

Abstract

ABSTRACT The objective of this study is to identify a good site for groundwater exploration in Teri deposits. In this rock types, groundwater occurs in secondary porosity developed due to weathering, faulting, fracturing in the subsurface formation. In such situations Wenner array with resistivity and SP logging is suitable method for groundwater exploration in the Teri deposits. Initially based topography, geomophological and hydrogeologial features, an area about 2km was segregate as a promising zone for groundwater exploration in the teri deposits of Sawerpuram, Thoothukudi District, Tamil Nadu, India. The Vertical Electrical Sounding was carried out using Wenner electrode configuration with help of equipment CRM 500. The interpretations were carried using Apparent Resistivity and SP logging techniques. The resistivity ranging from 100-120 Ohm.m indicates the freshwater zone in the study area