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Environmental Earth Sciences

, Volume 73, Issue 12, pp 8061–8073 | Cite as

The impact of hydrogeological settings on geochemical evolution of groundwater in karstified limestone aquifer basin in northwest Sri Lanka

  • Asanka Thilakerathne
  • Christoph Schüth
  • Rohana ChandrajithEmail author
Original Article

Abstract

The geochemical and isotope analysis of groundwaters from the Murunkan basin in north western Sri Lanka was carried out to examine their evolution and recharge sources in order to shed light to enhance the current knowledge of the hydro-geochemical processes in a karst geological setting. A total of 40 water samples from ground and surface water bodies were collected from the Miocene limestone terrain, nearby metamorphic and from unconsolidated Quaternary terrains for major anions, cations and environmental isotopes ratios (δ18OVSMOW and δ2HVSMOW). Distinct geochemical differences were noted between waters from limestone terrain and nearby metamorphic terrain indicating the modification of groundwater flow paths. Bicarbonate-chloride rich water is dominated in the limestone terrain in which water flows through a less mineralized aquifer system and is modified by the sea water intrusion. Groundwater in the metamorphic terrain is modified by dissolving of Ca–Mg rich mineral phases and subsequent ion exchange processes. The environmental isotopes of groundwater from both limestone and metamorphic terrains vary from −0.38 to −6.68 ‰ and −2.41 to −42.3 ‰ for δ18OVSMOW and δ2HVSMOW, respectively. However, slightly enriched isotope signatures and low d-excess values from limestone terrain indicate an excessive evaporation compared to that of the metamorphic terrain where rapid infiltration occurs through the overlying highly permeable grumusols soil layers.

Keywords

Limestone aquifer High grade metamorphic terrain Ionic ratios Stable environmental isotopes Groundwater recharge Seawater intrusion 

Notes

Acknowledgments

AT gratefully acknowledges a Grant from the Deutscher Akademiescher Austausch Dienst (DAAD), Germany, for this work. The authors thank the valuable comments and suggestions of Professors C.B.Dissanayake and Rohan Weerasooriya.

References

  1. Appelo CAJ, Postma D (2005) Geochemistry, groundwater and pollution. Taylor & Francis, Boca RatonCrossRefGoogle Scholar
  2. Basnayake BMSB (1988) Groundwater potentials in the sedimentary rock of Sri Lanka. In: Fernando LJD (ed) Felicitation volume. Geological Society of Sri Lanka, Peradeniya, pp 71–77Google Scholar
  3. Chandrajith R, Barth JA, Subasinghe N, Merten D, Dissanayake C (2012) Geochemical and isotope characterization of geothermal spring waters in Sri Lanka: evidence for a steeper than expected geothermal gradients. J Hydrol 476:360–369CrossRefGoogle Scholar
  4. Chandrajith R, Chaturangani D, Abeykoon S, Barth JAC, van Geldern R, Edirisinghe V, Dissanayake CB (2013) Quantification of groundwater-seawater- interaction in a coastal sandy aquifer system—a study from panama. Sri Lanka Environ Earth Sci 72(3):867–877Google Scholar
  5. Clark ID, Fritz P (1997) Environmental isotopes in hydrogeology. CRC Press/Lewis Publishers, Boca RatonGoogle Scholar
  6. Craig H (1961) Isotopic variations in meteoric waters. Science 133:1702–1703CrossRefGoogle Scholar
  7. Dansgaard W (1964) Stable isotopes in precipitation. Tellus 16(4):436–468CrossRefGoogle Scholar
  8. Davies J, Selvarathnam R (1982) The groundwater resources of the Murunkan area. North-West Land Water Resources Development Project Sri Lanka. Water Resources Board, Groundwater Division, ColomboGoogle Scholar
  9. Davis J, Herbert R (1988) Hydrogeology of the miocene sedimentary belt of Sri Lanka. J Geol soc Sri Lanka 1:45–63Google Scholar
  10. Dixon W, Chiswell B (1992) The use of hydrochemical sections to identify recharge areas and saline intrusions in alluvial aquifers, southeast Queensland. Aust J Hydrol 135(1):259–274CrossRefGoogle Scholar
  11. Gammons CH, Pape BL, Parker SR, Poulson SR, Blank CE (2013) Geochemistry, water balance, and stable isotopes of a “clean” pit lake at an abandoned tungsten mine, Montana, USA. Appl Geochem 36:57–69CrossRefGoogle Scholar
  12. Gat J, Matsui E (1991) Atmospheric water balance in the Amazon Basin: an isotopic evapotranspiration model. J Geophys Res Atmos 1984–2012 96(D7):13179–13188CrossRefGoogle Scholar
  13. Gleick PH (2000) A look at twenty-first century water resources development. Water Int 25(1):127–138CrossRefGoogle Scholar
  14. Global network of isotopes in precipitation-the GNIP database (2004). http://isohis.iaea.org. Accessed 10 Oct 2013
  15. Hem JD (1985) Study and interpretation of the chemical characteristics of natural water, vol 2254. Department of the Interior, US Geological Survey, Washington, D.C., pp 263Google Scholar
  16. Hidalgo MC, Cruz-Sanjulián J (2001) Groundwater composition, hydrochemical evolution and mass transfer in a regional detrital aquifer (Baza basin, southern Spain). Appl Geochem 16(7):745–758CrossRefGoogle Scholar
  17. Jankowski J, Acworth RI (1997) Impact of Debris-flow deposits on hydrogeochemical processes and the developement of dryland salinity in the Yass River Catchment, New South Wales. Aust Hydrogeol J 5(4):71–88CrossRefGoogle Scholar
  18. Katz BG, Coplen TB, Bullen TD, Davis JH (1997) Use of chemical and isotopic tracers to characterize the interactions between ground water and surface water in mantled karst. Ground Water 35(6):1014–1028CrossRefGoogle Scholar
  19. Khaska M, Le Gal La Salle C, Lancelot J, team A, Mohamad A, Verdoux P, Noret A, Simler R (2013) Origin of groundwater salinity (current seawater vs. saline deep water) in a coastal karst aquifer based on Sr and Cl isotopes. Case study of the La Clape massif (southern France). Appl Geochem 37:212–227CrossRefGoogle Scholar
  20. Loáiciga HA, Pingel TJ, Garcia ES (2012) Sea water intrusion by sea-level rise: scenarios for the 21st century. Ground Water 50(1):37–47CrossRefGoogle Scholar
  21. Meybeck M (1987) Global chemical weathering of surficial rocks estimated from river dissolved loads. Am J Sci 287(5):401–428CrossRefGoogle Scholar
  22. Post V (2005) Fresh and saline groundwater interaction in coastal aquifers: is our technology ready for the problems ahead? Hydrogeol J 13(1):120–123CrossRefGoogle Scholar
  23. Pu T, He Y, Zhang T, Wu J, Zhu G, Chang L (2013) Isotopic and geochemical evolution of ground and river waters in a karst dominated geological setting: a case study from Lijiang basin, South-Asia monsoon region. Appl Geochem 33:199–212CrossRefGoogle Scholar
  24. Rajmohan N, Elango L (2004) Identification and evolution of hydrogeochemical processes in the groundwater environment in an area of the Palar and Cheyyar River Basins. South India. Environ Geol 46(1):47–61Google Scholar
  25. Siebert C, Rosenthal E, Möller P, Rödiger T, Meiler M (2012) The hydrochemical identification of groundwater flowing to the Bet She’an-Harod multiaquifer system (Lower Jordan Valley) by rare earth elements, yttrium, stable isotopes (H, O) and Tritium. Appl Geochem 27(3):703–714CrossRefGoogle Scholar
  26. Small C, Nicholls RJ (2003) A global analysis of human settlement in coastal zones. J Coastal Res 19(3):584–599Google Scholar
  27. Vengosh A, Rosenthal E (1994) Saline groundwater in Israel: its bearing on the water crisis in the country. J Hydrol 156(1):389–430CrossRefGoogle Scholar
  28. Vörösmarty CJ, Green P, Salisbury J, Lammers RB (2000) Global water resources: vulnerability from climate change and population growth. Science 289(5477):284–288CrossRefGoogle Scholar
  29. Wang XF, Yakir D (2000) Using stable isotopes of water in evapotranspiration studies. Hydrol Process 14(8):1407–1421CrossRefGoogle Scholar
  30. WHO (1996) Guidelines for drinking-water quality, 2nd ed. Health criteria and other supporting information, vol 2. World Health Organization, GenevaGoogle Scholar
  31. WHO (2008) Guidelines for drinking-water quality, 3rd Edition, Recommendations, vol 1. World Health Organization, GenevaGoogle Scholar
  32. Wickramaratne U, Davies J (2011) Reconnaissance hydrogeology in Madu area for high-yielding groundwater aquifer. J Geol Soc Sri Lanka 14:55–63Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Asanka Thilakerathne
    • 1
    • 2
  • Christoph Schüth
    • 2
  • Rohana Chandrajith
    • 3
    Email author
  1. 1.Groundwater sectionNational Water Supply and Drainage BoardRathmalanaSri Lanka
  2. 2.Institut für Angewandte GeowissenschaftenTechnische Universität DarmstadtDarmstadtGermany
  3. 3.Department of Geology, Faculty of ScienceUniversity of PeradeniyaPeradeniyaSri Lanka

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