@article{fdi:010067173,
  title = {{S}tabilization of large drainage basins over geological time scales : {C}enozoic {W}est {A}frica, hot spot swell growth, and the {N}iger {R}iver},
  author = {{C}hardon, {D}ominique and {G}rimaud, {J}.{L}. and {R}ouby, {D} and {B}eauvais, {A}nicet and {C}hristophoul, {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{R}econstructing the evolving geometry of large river catchments over geological time scales is crucial to constraining yields to sedimentary basins. {I}n the case of {A}frica, it should further help deciphering the response of large cratonic sediment routing systems to {C}enozoic growth of the basin-and-swell topography of the continent. {M}apping of dated and regionally correlated lateritic paleolandscape remnants complemented by onshore sedimentological archives allows the reconstruction of two physiographic configurations of {W}est {A}frica in the {P}aleogene. {T}hose reconstructions show that the geometry of the drainage is stabilized by the late early {O}ligocene (29 {M}a) and probably by the end of the {E}ocene (34 {M}a), allowing to effectively link the inland morphoclimatic record to offshore sedimentation since that time, particularly in the case of the {N}iger catchment—delta system. {M}id-{E}ocene paleogeography reveals the antiquity of the {S}enegambia catchment back to at least 45 {M}a and suggests that a marginal upwarp forming a continental divide preexisted early {O}ligocene connection of the {N}iger and {V}olta catchments to the {E}quatorial {A}tlantic {O}cean. {S}uch a drainage rearrangement was primarily enhanced by the topographic growth of the {H}oggar hot spot swell and caused a stratigraphic turnover along the {E}quatorial margin of {W}est {A}frica.},
  keywords = {{AFRIQUE} {DE} {L}'{OUEST} ; {NIGER} {COURS} {D}'{EAU} ; {VOLTA} {COURS} {D}'{EAU}},
  booktitle = {},
  journal = {{G}eochemistry, {G}eophysics, {G}eosystems},
  volume = {17},
  numero = {3},
  pages = {1164--1181},
  ISSN = {1525-2027},
  year = {2016},
  DOI = {10.1002/2015{GC}006169},
  URL = {https://www.documentation.ird.fr/hor/fdi:010067173},
}