Abstract
Investigations on geohydrological aspects of coastal aquifer are important in order to understand the mechanism of ground water salinisation. The present study describes the salinity variations of ground water in deep boreholes drilled in Charnockite rock formation of Kalpakkam, on the eastern coast of India. Water samples collected up to 600m depth were analyzed for salinity variation. It is noticed that in one of the boreholes, (borehole K1), the salinity level is found to be 74 parts per thousand (ppt) at 400 m depth. Influence of surface saline water bodies viz., sea (26–28.5 ppt), backwaters (27–30 pt) and Buckingham canal (27–32 ppt) as the possiblesources of recharge of fresh waters through joint and fracture system ofthe rock are discussed in this paper. Studies would assist in understandingthe geohydrological characteristics of deep geological formation.
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Gurumoorthy, C., Sasidhar, P., Arumugham, V. et al. Sub-Surface Investigations on Deep Saline Groundwater of Charnockite Rock Formation, Kalpakkam, India. Environ Monit Assess 91, 211–222 (2004). https://doi.org/10.1023/B:EMAS.0000009237.06427.2b
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DOI: https://doi.org/10.1023/B:EMAS.0000009237.06427.2b