Long-term denudation rates of actively uplifting hillcrests in the Boso Peninsula, Japan, estimated from depth profiling of in situ-produced cosmogenic 10 Be and 26 Al
作者: Yuki MatsushiSachi WakasaHiroyuki MatsuzakiYukinori Matsukura
作者单位: 1Geoenvironmental Sciences, Graduate School of Life and Environmental Sciences, University of Tsukuba, Ibaraki 305-8572, Japan
2Department of Nuclear Engineering and Management, The University of Tokyo, Tokyo 113-0032, Japan
刊名: Geomorphology, 2006, Vol.82 (3), pp.283-294
来源数据库: Elsevier Journal
DOI: 10.1016/j.geomorph.2006.05.009
关键词: Cosmogenic nuclides ( 10 Be and 26 Al)Depth profileDenudation rateHillcrestLandscape evolution
原始语种摘要: Abstract(#br)Depth profiling of in situ-produced cosmogenic 10 Be and 26 Al was applied to estimate the rate of long-term denudation on actively uplifting hillcrests made of weakly consolidated sandstone in the Boso Peninsula, Japan. The nuclide concentration in the topmost meter of the hillcrest has reached an equilibrium value owing to surface denudation at 90 mm/kyr. This rate is much smaller than the regional uplift rate, and is consistent with the current isolated residual topography of the hillcrest. By considering the epoch of emergence of the sandstone hillcrests, we estimate the summit denudation rate of the adjacent mudstone hill formation to be 720±110 mm/kyr.
全文获取路径: Elsevier  (合作)
影响因子:2.552 (2012)