@article{fdi:010065382,
  title = {{A} note on {B}e-10-derived mean erosion rates in catchments with heterogeneous lithology : examples from the western {C}entral {A}ndes},
  author = {{C}arretier, {S}{\'e}bastien and {R}egard, {V}. and {V}assallo, {R}. and {M}artinod, {J}. and {C}hristophoul, {F}. and {G}ayer, {E}. and {A}udin, {L}aurence and {L}agane, {C}hristelle},
  editor = {},
  language = {{ENG}},
  abstract = {{M}illennial catchment-mean erosion rates derived from terrestrial cosmogenic nuclides are generally based on the assumption that the lithologies of the parent rock each contain the same proportion of quartz. {T}his is not always true for large catchments, in particular at the edge of mountainous plateaus where quartz-rich basement rocks may adjoin sedimentary or volcano-sedimentary rocks with low quartz content. {T}he western {C}entral {A}ndes is an example of this type of situation. {D}ifferent quartz contents may be taken into account by weighting the {TCN} production rates in the catchment. {W}e recall the underlying theory and show that weighting the {TCN} production rate may also lead to bias in the case of a spatial correlation between erosion rate and lithology. {W}e illustrate the difference between weighted and unweighted erosion rates for seven catchments (16 samples) in southern {P}eru and northern {C}hile and show variations up to a factor of 2 between both approaches. {I}n this dataset, calculated erosion rates considering only granitoid outcrops are better correlated with catchment mean slopes than those obtained without taking into account the geological heterogeneity of the drained watershed. {T}his dataset analysis demonstrates that weighting erosion rates by relative proportions of quartz is necessary to evaluate the uncertainties for calculated catchment-mean erosion rates and may reveal the correlation with geomorphic parameters.},
  keywords = {{B}e-10 ; erosion rate ; lithology ; {A}ndes ; {PEROU} ; {CHILIE} ; {ANDES}},
  booktitle = {},
  journal = {{E}arth {S}urface {P}rocesses and {L}andforms},
  volume = {40},
  numero = {13},
  pages = {1719--1729},
  ISSN = {0197-9337},
  year = {2015},
  DOI = {10.1002/esp.3748},
  URL = {https://www.documentation.ird.fr/hor/fdi:010065382},
}