Assessing the effect of a major storm on 10 BE concentrations and inferred basin-averaged denudation rates
作者: Melissa A. FosterRobert S. Anderson
作者单位: 1Institute of Arctic and Alpine Research (INSTAAR), University of Colorado, Campus Box 450, Boulder, CO 80309-0450, USA
2Department of Geological Sciences, University of Colorado, UCB 399, Boulder, CO 80309-0399, USA
刊名: Quaternary Geochronology, 2016, Vol.34 , pp.58-68
来源数据库: Elsevier Journal
DOI: 10.1016/j.quageo.2016.03.006
关键词: Cosmogenic radionuclide datingBasin-averaged denudation ratesQuaternary geology and geomorphology
英文摘要: Abstract(#br)10 Be concentrations in stream sediments are commonly employed to calculate basin-averaged denudation rates. Such calculations assume that denudation is steady in time and that quartz is uniformly distributed in the watershed. The 10 Be concentrations in stream sediments are assumed to represent a spatially and temporally averaged concentration, and therefore should not be affected by a discrete erosion event. The effect of such events on 10 Be concentrations has been modeled, but has not been previously field-tested following a large precipitation event. In this study, we resampled stream sediments that had been previously analyzed to deduce basin averaged erosion rates in small, tributary basins in the Colorado Front Range following an extreme precipitation event in 2013....
全文获取路径: Elsevier  (合作)
影响因子:4.015 (2012)