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Delineation of hydraulic connectivity across a dolerite dyke through hydrogeological, geophysical and tracer studies—a case study

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Environmental Geology

Abstract

A linear WNW–ESE trending dolerite dyke, having a width of 30–40 m and length of 3–4 km, exists in the catchment area of Himayatsagar reservoir in Ranga Reddy district of Andhra Pradesh state, India. A company has planned to set up an oil-based industrial unit a few kilometers away in the upstream side of the dyke. Hydrogeological, geophysical and tracer studies were carried out for establishing hydraulic connectivity across the dyke, which would in turn reflect on the possibility of contamination of the groundwater regime in the downstream side of the dyke due to discharge of effluents from the industry. The result of multiparameter investigations carried out in the area reveal that hydraulic connectivity exists across the dyke body.

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Acknowledgements

The authors thank the Director NGRI for his support and encouragement and giving permission to publish this paper and also thank Mr. V. Krishnan and Mr. M.R.K. Sharma for their technical support in the investigations.

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Authors and Affiliations

  1. National Geophysical Research Institute, Hyderabad, 500 007, India

    S. Sankaran, R. Rangarajan & R. L. Dhar

Authors
  1. S. Sankaran
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  2. R. Rangarajan
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  3. R. L. Dhar
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Correspondence to S. Sankaran.

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Sankaran, S., Rangarajan, R. & Dhar, R.L. Delineation of hydraulic connectivity across a dolerite dyke through hydrogeological, geophysical and tracer studies—a case study. Environ Geol 48, 411–419 (2005). https://doi.org/10.1007/s00254-005-1230-5

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  • DOI: https://doi.org/10.1007/s00254-005-1230-5

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