@article{fdi:010093510,
  title = {{D}ecoding surface processes from escarpment to watershed : insights from karst landscapes using cosmogenic nuclides and geochemical data},
  author = {{U}agoda, {R}. and {S}iame, {L}. {L}. and {G}arnier, {J}. and {L}eanni, {L}aetitia and {C}aldeira, {D}. and {B}raucher, {R}. and {F}reydier, {R}. and {S}eyler, {P}atrick},
  editor = {},
  language = {{ENG}},
  abstract = {{T}ropical karst landscapes are marked by complex sediment dynamics resulting from the interplay between geomorphic processes and sediment transport. {I}n the {V}ermelho {W}atershed ({B}razilian savanna), we use paired cosmogenic nuclides (10{B}e and 26{A}l) to quantify denudation rates, burial durations, and sediment mixing. {T}he spatial distribution of {A}l-{B}e ratios reveals rapid erosion and prolonged burial on escarpments, in contrast to the more stable conditions of flatter areas, where erosion is subdued, and sediment residence time is longer. {C}omparisons with {I}raquara and {S}erra das {M}esas emphasize the influence of topography and sediment sources on nuclide inventories. {D}ownstream increases in freshly eroded material point to fluvial mixing, while discrepancies between cosmogenic burial and {OSL} ages ({T}arimba {C}ave) suggest partial burial and pre-depositional histories. {T}he integration of cosmogenic, geochemical, and geomorphic data underscores the complexity of tropical karst systems, where vertical mixing and uneven erosion are key processes. {T}hese results contribute to a broader understanding of landscape evolution and offer a comparative basis for interpreting cosmogenic signals in fluviokarst environments worldwide.},
  keywords = {{C}osmogenic nuclides ; {F}luvio-karst systems ; {S}ediment dynamics ; {BRESIL}},
  booktitle = {},
  journal = {{G}eomorphology},
  volume = {482},
  numero = {},
  pages = {109794 [16 p.]},
  ISSN = {0169-555{X}},
  year = {2025},
  DOI = {10.1016/j.geomorph.2025.109794},
  URL = {https://www.documentation.ird.fr/hor/fdi:010093510},
}