Record details

    Large-scale erosion rates from in situ-produced cosmogenic nuclides in European river sediments
Statement of responsibility
    M. Schaller, F. Blanckenburg, N. Hovius, P.M. Kubik
    Blanckenburg, F.
    Hovius, N.
    Kubik, P. M.
    Schaller, M.
Source title - serial
    Earth and planetary science letters
    Vol. 188, no. 3-4
    p. 441-458
    5 obr., 4 tab., 52 bibl.
    Zkr. název ser.: Earth planet. Sci. Lett.
Subject group
    izotopy Be
    izotopy radioaktivní
    prvky kosmogenní
    rychlost eroze
    sedimentace fluviální
    výzdvih klenbový
Geographical name
Abstract (in english)
   We have calculated long-term erosion rates of 20-100 mm/kyr from quartz-contained 10Be in the bedload of middle European rivers for catchments ranging from 102 to 10 5 km2. These rates average over 10-40 kyr and agree broadly with rock uplift, incision and exhumation rates, historic soil erosion rates, and erosion rates calculated from the measured sediment loads of the same rivers. Moreover, our new erosion rate estimates correlate well lithology and relief. However, in the Regen, Neckar, Loire, and Meuse catchments, cosmogenic nuclide-derived erosion rates are consistently 1.5-4 times greater than the equivalent rates derived from measured river loads. This may be due to the systematic under-representation of high-magnitude, low-frequency transport events in the gauging records which cover tapping of deeper sections of the irradiation profile.
   A third explanation relates the high cosmogenic nuclide-derived erosion rate estimates are not greater than the potential errors in conventional estimates. Therefore, the cosmogenic nuclide approach is an effective tool for rapid, catchment-wide assessmnet of time-intergrated rates of bedrock weathering and erosion, and we anticipate its fruitful application to the Quaternary sedimentary record
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    23. 8. 2007
Import date
    8. 8. 2012