R. T. Bailey, T. K. Gates, and A. D. Halvorson, Simulating variably-saturated reactive transport of selenium and nitrogen in agricultural groundwater systems, Journal of Contaminant Hydrology, vol.149, pp.27-45, 2013.
DOI : 10.1016/j.jconhyd.2013.03.001

R. T. Bailey, W. J. Hunter, and T. K. Gates, The Influence of Nitrate on Selenium in Irrigated Agricultural Groundwater Systems, Journal of Environment Quality, vol.41, issue.3, pp.783-792, 2012.
DOI : 10.2134/jeq2011.0311

M. Bajaj, E. Eiche, T. Neumann, J. Winter, and C. Gallert, Hazardous concentrations of selenium in soil and groundwater in North-West India, Journal of Hazardous Materials, vol.189, issue.3, pp.640-646, 2011.
DOI : 10.1016/j.jhazmat.2011.01.086

E. Barron, V. Migeot, F. Seby, I. Ingrand, M. Potin-gautier et al., Selenium exposure in subjects living in areas with high selenium concentrated drinking water: Results of a French integrated exposure assessment survey, Environ. Int, vol.40, pp.155-161, 2012.

K. Beisner, D. L. Naftz, W. P. Johnson, and X. Diaz, Selenium and trace element mobility affected by periodic displacement of stratification in the Great Salt Lake, Utah, Science of The Total Environment, vol.407, issue.19, pp.5263-5273, 2009.
DOI : 10.1016/j.scitotenv.2009.06.005

D. Bernard, B. Bosch, and P. Caulier, Acquisition et rassemblement des données géothermiques disponibles et nouvelles dans la zone Franco-Belge de Saint-Ghislain à Saint-Amand-les-Eaux (Nord), pp.80-406, 1981.

J. D. Blum, Y. Erel, and K. Brown, 87Sr/86Sr ratios of sierra nevada stream waters: Implications for relative mineral weathering rates, Geochimica et Cosmochimica Acta, vol.57, issue.21-22, pp.5019-5025, 1994.
DOI : 10.1016/S0016-7037(05)80014-6

M. Boulen, P. Salvador, and L. Deschodt, Formations sédimentaires et évolution de la vallée de la Deûle depuis le Pléniglaciaire supérieur à Houplin-Ancoisne, 2004.

A. C. Bourg, D. Darmendrail, and J. Ricour, Geochemical filtration of riverbank and migration of heavy metals between the De??le River and the Ansereuilles alluvion-chalk aquifer (Nord, France), Geoderma, vol.44, issue.2-3, pp.229-244, 1989.
DOI : 10.1016/0016-7061(89)90032-3

A. Brenot, N. Baran, E. Pételet-giraud, and P. Négrel, Interaction between different water bodies in a small catchment in the Paris basin (Br??villes, France): Tracing of multiple Sr sources through Sr isotopes coupled with Mg/Sr and Ca/Sr ratios, Applied Geochemistry, vol.23, issue.1, pp.58-75, 2008.
DOI : 10.1016/j.apgeochem.2007.09.006

J. Y. Caous, Impact de l'activité industrielle sur la qualité de la nappe de la craie (champs captants du Sud de Lille -59) Etat initial des connaissances géologiques et hydrogéologiques, Projet BRGM POLD05. BRGM, p.52180, 2003.

L. Cary, H. Benabderraziq, J. Elkhattabi, M. Parmentier, L. Gourcy et al., Tracking selenium behaviour in chalk aquifer (northern France): Sr and 34S-sulphates isotopes constraints, EGU General Assembly 2014, Geophysical Research Abstracts, vol.16, 2014.

L. Cary, L. Gourcy, H. Benabderraziq, J. Elkhattabi, A. Laurent et al., Multi isotopic tools to understand selenium origins in groundwaters of the Chalk aquifer in Northern France, EGU General Assembly 2013, Geophysical Research Abstracts, vol.15, 2013.

M. Chabart, L. Gourcy, and G. Braibant, Origine des anomalies en sélénium dans les captages d'AEP du département de la Marne, 2006.

Z. Chuncai, L. Guijian, W. Dun, F. Ting, W. Ruwei et al., Mobility behavior and environmental implications of trace elements associated with coal gangue: A case study at the Huainan Coalfield in China, Chemosphere, vol.95, pp.193-199, 2014.
DOI : 10.1016/j.chemosphere.2013.08.065

H. Craig, Isotopic Variations in Meteoric Waters, Science, vol.133, issue.3465, pp.1702-1703, 1961.
DOI : 10.1126/science.133.3465.1702

W. G. Darling, D. C. Gooddy, A. M. Macdonald, and B. L. Morris, The practicalities of using CFCs and SF6 for groundwater dating and tracing, Applied Geochemistry, vol.27, issue.9, pp.1688-1697, 2012.
DOI : 10.1016/j.apgeochem.2012.02.005

S. J. Deverel and S. K. Gallanthine, Relation of salinity and selenium in shallow groundwater to hydrologic and geochemical processes, Western San Joaquin Valley, California, Journal of Hydrology, vol.109, issue.1-2, pp.125-149, 1989.
DOI : 10.1016/0022-1694(89)90011-5

K. S. Dhillon and S. K. Dhillon, Quality of underground water and its contribution towards selenium enrichment of the soil-plant system for seleniferous region of Northwest India, J. of Hydrology, vol.272, pp.123-130, 2003.

S. S. Dogramaci and A. L. Herczeg, Strontium and carbon isotope constraints on carbonate-solution interactions and inter-aquifer mixing in groundwaters of the semi-arid Murray Basin, Australia, Journal of Hydrology, vol.262, issue.1-4, pp.50-67, 2002.
DOI : 10.1016/S0022-1694(02)00021-5

T. Drouet, J. Herbauts, W. Gruber, and D. Demaiffe, Strontium isotope composition as a tracer of calcium sources in two forest ecosystems in Belgium, Geoderma, vol.126, issue.3-4, pp.203-223, 2005.
DOI : 10.1016/j.geoderma.2004.09.010

W. M. Edmunds, J. M. Cook, W. G. Darling, D. G. Kinniburgh, D. L. Miles et al., Baseline geochemical conditions in the Chalk aquifer, Berkshire, U.K.: a basis for groundwater quality management, Baseline geochemical conditions in the Chalk aquifer, pp.251-274, 1987.
DOI : 10.1016/0883-2927(87)90042-4

W. M. Edmunds and P. L. Smedley, Residence time indicators in groundwater: the East Midlands Triassic sandstone aquifer, Applied Geochemistry, vol.15, issue.6, pp.737-752, 2000.
DOI : 10.1016/S0883-2927(99)00079-7

T. Elliot, J. N. Andrews, and W. M. Edmunds, Hydrochemical trends, palaeorecharge and groundwater ages in the fissured Chalk aquifer of the London and Berkshire Basins, UK, Applied Geochemistry, vol.14, issue.3, pp.333-363, 1999.
DOI : 10.1016/S0883-2927(98)00060-2

G. Faure, Principles of Isotope Geology, 1986.

J. M. Garnier, Un modèle de l'estimation de l'activité initiale du carbone dissous et des vitesses d'écoulement en régime captif, 1976.

J. Gat, Isotopic fractionation Stable isotope hydrology -Deuterium and Oxygen-18 in the water cycle, 1981.

T. K. Gates, B. M. Cody, J. P. Donnelly, A. W. Herting, R. T. Bailey et al., Assessing Selenium Contamination in the Irrigated Stream???Aquifer System of the Arkansas River, Colorado, Journal of Environment Quality, vol.38, issue.6, pp.2344-2356, 2009.
DOI : 10.2134/jeq2008.0499

D. C. Gooddy, W. G. Darling, C. Abesser, and D. J. Lapworth, Using chlorofluorocarbons (CFCs) and sulphur hexafluoride (SF6) to characterise groundwater movement and residence time in a lowland Chalk catchment, Journal of Hydrology, vol.330, issue.1-2, pp.44-52, 2006.
DOI : 10.1016/j.jhydrol.2006.04.011

L. Gourcy and A. Brenot, Multiple environmental tracers for a better understanding of water flux in a wetland area (La Bass??e, France), Applied Geochemistry, vol.26, issue.12, pp.2147-2158, 2011.
DOI : 10.1016/j.apgeochem.2011.07.012

L. Gourcy and F. Crastes-de-paulet, Apport des outils chimiques et isotopiques dans la connaissance de l'aquifère du calcaire carbonifère, 2012.

D. M. Guan and J. Martin, Selenium distribution in the Rh??ne delta and the Gulf of Lions, Marine Chemistry, vol.36, issue.1-4, pp.303-316, 1991.
DOI : 10.1016/S0304-4203(09)90068-8

P. A. Huddard, F. J. Longstaffe, and A. S. Crowe, ??D and ??18O evidence for inputs to groundwater at a wetland coastal boundary in the southern Great Lakes region of Canada, Journal of Hydrology, vol.214, issue.1-4, pp.18-31, 1999.
DOI : 10.1016/S0022-1694(98)00226-1

W. Kloppmann, L. Dever, and W. M. Edmunds, Zones d'oxydo-r??duction dans l'aquif??re de la Craie des bassins de Paris et de l'Allemagne du nord, Hydrological Sciences Journal, vol.139, issue.3, pp.311-326, 1996.
DOI : 10.4319/lo.1974.19.5.0857

T. R. Kulp and L. M. Pratt, Speciation and weathering of selenium in upper cretaceous chalk and shale from South Dakota and Wyoming, USA, Geochimica et Cosmochimica Acta, vol.68, issue.18, pp.3687-3701, 2004.
DOI : 10.1016/j.gca.2004.03.008

Y. T. Liu, T. Y. Chen, W. G. Mackebee, L. Ruhl, A. Vengosh et al., Selenium Speciation in Coal Ash Spilled at the Tennessee Valley Authority Kingston Site, Environmental Science & Technology, vol.47, issue.24, pp.14001-14009, 2013.
DOI : 10.1021/es4041557

P. H. Masscheleyn, R. D. Delaune, and W. H. Patrick, Transformations of selenium as affected by sediment oxidation-reduction potential and pH, Environmental Science & Technology, vol.24, issue.1, pp.91-96, 1990.
DOI : 10.1021/es00071a010

J. M. Mcarthur, M. F. Thirlwall, A. S. Gale, W. J. Kennedy, J. A. Burnett et al., Strontium isotope stratigraphy for the Late Cretaceous: a new curve, based on the English Chalk, High Resolution Stratigraphy. From Hailwood, pp.195-209, 1993.

M. Meybeck, Composition chimique des ruisseaux non pollués de France, Sci. Géol. Bull, vol.39, pp.3-77, 1986.

R. Millot, E. Petelet-giraud, C. Guerrot, and P. Négrel, Multi-isotopic composition (??7Li?????11B?????D?????18O) of rainwaters in France: Origin and spatio-temporal characterization, Applied Geochemistry, vol.25, issue.10, 2010.
DOI : 10.1016/j.apgeochem.2010.08.002

URL : https://hal.archives-ouvertes.fr/hal-00553187

P. Négrel, J. Casanova, and J. F. Aranyossy, Strontium isotope systematics used to decipher the origin of groundwaters sampled from granitoids: the Vienne Case (France), Chemical Geology, vol.177, issue.3-4, 2001.
DOI : 10.1016/S0009-2541(00)00414-9

P. Négrel and E. Petelet-giraud, Strontium isotopes as tracers of groundwater-induced floods: the Somme case study (France), Journal of Hydrology, vol.305, issue.1-4, pp.99-119, 2005.
DOI : 10.1016/j.jhydrol.2004.08.031

R. S. Oremland, J. T. Hollibaugh, A. S. Maest, T. S. Presser, L. G. Miller et al., Selenate reduction to elemental selenium by anaerobic bacteria in sediments and culture: biogeochemical significance of a novel, sulfate-independent respiration, Appl Environ Microbiol, vol.55, pp.2333-2343, 1989.

L. N. Plummer and E. Busenberg, Chlorofluorocarbons, Environmental tracers in subsurface hydrology, pp.41-478, 1999.
DOI : 10.1007/978-1-4615-4557-6_15

S. Roy, J. Gaillardet, and C. J. Allègre, Geochemistry of dissolved and suspended loads of the Seine River, France: anthropogenic impact, carbonate and silicate weathering, Geochimica et Cosmochimica Acta, vol.63, issue.9, pp.1277-1292, 1999.
DOI : 10.1016/S0016-7037(99)00099-X

B. Simon, Apports de la biogéochimie isotopique à la connaissance de la dénitrification dans les eaux souterraines. Rapport 86-SGN-641, 1986.

P. L. Smedley and W. M. Edmunds, Redox Patterns and Trace-Element Behavior in the East Midlands Triassic Sandstone Aquifer, U.K., Ground Water, vol.15, issue.4, pp.44-58, 2002.
DOI : 10.1016/0016-7037(93)90369-8

A. Talbot, S. Philippart, S. Bailly, and C. Caron, Champ captants de Ansereuilles, d'Emmerin et d'Houplin-Ancoisne. Modélisation des écoulements souterrains et des transferts de masse, pp.85-063, 1985.

M. L. Tuttle, J. W. Fahy, J. G. Elliott, R. I. Grauch, and L. L. Stillings, Contaminants from cretaceous black shale: II. Effect of geology, weathering, climate, and land use on salinity and selenium cycling, Mancos Shale landscapes, southwestern United States, Applied Geochemistry, vol.46
DOI : 10.1016/j.apgeochem.2013.12.011

P. Vachier, L. Dever, and J. C. Fontes, Mouvements de l'eau dans la zone non saturée et alimentation de la nappe de la craie de Champagne (France) IAEA STI-PUB-757, pp.367-379, 1987.

A. Vengosh, T. T. Lindberg, B. R. Merola, L. Ruhl, N. R. Warner et al., Isotopic Imprints of Mountaintop Mining Contaminants, Environmental Science & Technology, vol.47, issue.17, pp.10041-10048, 2013.
DOI : 10.1021/es4012959

M. Vinceti, C. M. Crespi, F. Bonvicini, C. Malagoli, M. Ferrante et al., The need for a reassessment of the safe upper limit of selenium in drinking water, Science of The Total Environment, vol.443, pp.633-642, 2013.
DOI : 10.1016/j.scitotenv.2012.11.025

M. Vinceti, T. Maraldi, M. Bergomi, and C. Malagoli, Risk of Chronic Low-Dose Selenium Overexposure in Humans: Insights From Epidemiology and Biochemistry, Reviews on Environmental Health, vol.24, issue.3, pp.231-248, 2009.
DOI : 10.1515/REVEH.2009.24.3.231

L. Vitoria, N. Otero, A. Soler, A. N. Canals, S. et al., Fertilizer characterization: Isotopic data, Environ. Sci. Technol, vol.38, pp.3254-3262, 2004.

D. Widory, W. Kloppmann, L. Chery, J. Bonnin, H. Rochdi et al., Nitrate in groundwater: an isotopic multi-tracer approach, Journal of Contaminant Hydrology, vol.72, issue.1-4, pp.165-188, 2004.
DOI : 10.1016/j.jconhyd.2003.10.010

P. T. Zawislanski, H. S. Mountford, E. J. Gabet, A. E. Mcgrath, and H. C. Wong, Selenium Distribution and Fluxes in Intertidal Wetlands, San Francisco Bay, California, Journal of Environment Quality, vol.30, issue.3, pp.1080-1091, 2001.
DOI : 10.2134/jeq2001.3031080x

Y. Zhang, C. P. Slomp, H. P. Broers, B. Bostick, H. F. Passier et al., Isotopic and microbiological signatures of pyrite-driven denitrification in a sandy aquifer, Chemical Geology, vol.300, issue.301, pp.300-301
DOI : 10.1016/j.chemgeo.2012.01.024