@article{fdi:010064142,
  title = {{D}ifferences in {B}e-10 concentrations between river sand, gravel and pebbles along the western side of the central {A}ndes},
  author = {{C}arretier, {S}{\'e}bastien and {R}egard, {V}. and {V}assallo, {R}. and {A}guilar, {G}. and {M}artinod, {J}. and {R}iquelme, {R}. and {C}hristophoul, {F}. and {C}harrier, {R}. and {G}ayer, {E}. and {F}arias, {M}. and {A}udin, {L}aurence and {L}agane, {C}hristelle},
  editor = {},
  language = {{ENG}},
  abstract = {{C}osmogenic nuclides in river sediment have been used to quantify catchment-mean erosion rates. {N}evertheless, variable differences in {B}e-10 concentrations according to grain size have been reported. {W}e analyzed these differences in eleven catchments on the western side of the {A}ndes, covering contrasting climates and slopes. {T}he data include eight sand (0.5-1 mm) and gravel (1-3 cm) pairs and twelve sand (0.5-1 mm) and pebble (5-10 cm) pairs. {T}he difference observed in three pairs can be explained by a difference in the provenance of the sand and coarser sediment. {T}he other sand pebble pairs show a lower {B}e-10 concentration in the pebbles, except for one pair that shows similar concentrations. {T}wo sand-gravel pairs show a lower {B}e-10 concentration in the gravel and the other five pairs show a higher {B}e-10 concentration in the gravel. {D}ifferences in climate do not reveal a particular influence on the {B}e-10 concentration between pairs. {T}he analysis supports a model where pebbles and gravel are mainly derived from catchment areas that are eroding at a faster rate. {T}he five gravel samples with high {B}e-10 concentrations probably contain gravel that were derived from the abrasion of cobbles exhumed at high elevations. {I}n order to validate this model, further work should test if pebbles are preferentially exhumed from high erosion rate areas, and if the difference between pebbles with high {B}e-10 concentrations and sand decreases when the erosion rate tends to be homogeneous within a catchment.},
  keywords = {{A}ndes ; {S}and ; {P}ebbles ; {G}ravels ; {S}ediment ; {C}osmogenic nuclide ; {E}rosion ; {G}ranulometry ; {PEROU} ; {CHILI} ; {ANDES}},
  booktitle = {},
  journal = {{Q}uaternary {G}eochronology},
  volume = {27},
  numero = {},
  pages = {33--51},
  ISSN = {1871-1014},
  year = {2015},
  DOI = {10.1016/j.quageo.2014.12.002},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064142},
}