@article{fdi:010093060,
  title = {{E}nhancement of the geological mapping in weathered plutonic and metamorphic rocks areas using village water supply wells data (lithology and hydrochemistry)},
  author = {{O}uangar{\'e}, {C}.{A}.{C}. and {N}aba, {S}. and {L}achassagne, {P}atrick},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n weathered plutonic and metamorphic rocks areas, because rock outcrops are rare due to the extensive regolith cover, geological mapping is largely based on the interpretation of airborne data and imagery (aerial photographs, satellite images, airborne geophysics when available, etc.). {I}n the sub-{S}aharan {A}frica, numerous village water supply campaigns were performed during the last 40 years. {M}ost hydrogeological and geological data from these campaigns are stored and safeguard in country scale databases. {I}n this study, we develop a methodology to improve the existing geological maps in a such geological context with lithological data from the existing databases. {T}hese data were not used during past geological mapping; yet they provide a complementary access to the lithology, notably in areas where outcrops are very scarce. {W}e propose a coherent methodology to use and validate such geological data, complementary to field observations on the scarce outcrops, to cope with their uncertainties. {W}e also show that groundwater hydrochemistry, namely the silica content, can be of use to complete the geological

mapping. {U}sing data from 735 boreholes drilled in the {K}oudougou and {L}{\'e}o square study area of {B}urkina {F}aso, we validate this new methodological approach and locally propose a more accurate 1:200,000 geological map.},
  keywords = {{AFRIQUE} {SUBSAHARIENNE} ; {BURKINA} {FASO}},
  booktitle = {},
  journal = {{H}eliyon},
  volume = {10},
  numero = {22},
  pages = {e40376 [20 ]},
  ISSN = {2405-8440},
  year = {2024},
  DOI = {10.1016/j.heliyon.2024.e40376},
  URL = {https://www.documentation.ird.fr/hor/fdi:010093060},
}