Hallett, BM;
Dharmagunawardhane, HA;
Atal, S;
Valsami-Jones, E;
Ahmed, S;
Burgess, WG;
(2015)
Mineralogical sources of groundwater fluoride in Archaen bedrock/regolith aquifers: Mass balances from southern India and north-central Sri Lanka.
Journal of Hydrology: Regional Studies
, 4
(Part A)
pp. 111-130.
10.1016/j.ejrh.2014.10.003.
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BMH, HAD, SA, EV-J, SA & WGB 2015 Jour Hydrol Reg Studies, journal paper.pdf - Published Version Download (2MB) | Preview |
Abstract
STUDY REGION: The Maheshwaram and Waipally catchments of Andhra Pradesh, India, and the Plonnaruwa catchment of north-central Sri Lanka. STUDY FOCUS: The distribution of F across eight crystalline phases and between the bedrock and the regolith at eleven sites in three catchments is documented. Mineral contributions to F release during weathering and regolith development are quantified. NEW HYDROLOGICAL INSIGHTS FOR THE REGION: An estimate of weathering duration for the in situ regolith in Andhra Pradesh, 250-380 Ka, is close to a previous estimate for southern India. Partial or total destruction of the primary F-bearing bedrock minerals and consistent depletion of F in the remnant minerals result in a much reduced total F content in the regolith. Leaching experiments and field relationships, however, indicate a greater potential for F mobilisation to groundwater from the regolith than the bedrock. Schemes for managed aquifer recharge should beware the risk of mobilising additional F to groundwater.
| Type: | Article |
|---|---|
| Title: | Mineralogical sources of groundwater fluoride in Archaen bedrock/regolith aquifers: Mass balances from southern India and north-central Sri Lanka |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.ejrh.2014.10.003 |
| Publisher version: | http://dx.doi.org/10.1016/j.ejrh.2014.10.003 |
| Language: | English |
| Additional information: | © 2015 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/3.0/ ). |
| Keywords: | Groundwater; Fluoride; Regolith; Archaen; India; Sri Lanka |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1522421 |
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