@article{fdi:010065222,
  title = {{I}nvestigation of {C}l-36 distribution : towards a new estimation of groundwater residence times in the confined aquifer of the {LCB} ?},
  author = {{B}ouchez, {C}. and {D}eschamps, {P}ierre and {G}oncalves, {J}. and {H}amelin, {B}runo and {S}ylvestre, {F}lorence and {D}oumnang, {J}.{C}. and {N}our, {A}.{M}. and {G}oni, {I}.{B}. and {F}avreau, {G}uillaume and {G}enthon, {P}ierre and {S}eidel, {J}.{L}.},
  editor = {},
  language = {{ENG}},
  abstract = {36{C}l measurements in groundwaters of the deep confined aquifer of the {L}ake {C}had {B}asin ({LCB}) were performed in order to constrain groundwater geochemical ages and residence times. {T}wenty-seven wells were sampled in {N}igeria, {N}iger and {C}had in the southern parts of the large (700 000 km2) multilayered aquifer of the {LCB}. 36{C}l/{C}l values range between 11±1.10-15 to 148±8.10-15 at/at. {T}he highest ratios are observed near the recharge zone of the {N}igerian part of the {C}ontinental {T}erminal aquifer, while the lowest ones are found in wells located near the southern fringe of the present-day lake {C}had. {C}hloride concentrations are low (below 100 mg/l) and not correlated to the 36{C}l/{C}l values, indicating negligible dissolution of evaporites in most samples. {R}eliable 36{C}l ages can be calculated along the different flow paths investigated, suggesting residence times of the deep groundwaters larger than 300 000 years. {T}hese results are consistent with new {AMS}-14{C} data below the detection limit but are in contradiction with previous 14{C} data obtained in the area.},
  keywords = {{DATATION} ; {EAU} {SOUTERRAINE} ; {AQUIFERE} ; {NAPPE} ; {METHODOLOGIE} ; {CHIMIE} {DE} {L}'{EAU} ; {GEOCHIMIE} ; {CHLORE} ; {CHLORURE} ; {PUITS} ; {ECHANTILLONNAGE} ; {PALEOENVIRONNEMENT} ; {TRACEUR} ; {PALEOHYDROLOGIE} ; {CONTINENTAL} {TERMINAL} ; {TCHAD} ; {TCHAD} {LAC} ; {NIGER} ; {NIGERIA} ; {ZONE} {SAHELIENNE}},
  booktitle = {11th {A}pplied isotope geochemistery conference {AIG}-11},
  journal = {{P}rocedia {E}arth and {P}lanetary {S}cience},
  volume = {13},
  numero = {},
  pages = {147--150},
  ISSN = {1878-5220},
  year = {2015},
  DOI = {10.1016/j.proeps.2015.07.035},
  URL = {https://www.documentation.ird.fr/hor/fdi:010065222},
}