标题：Early stages of weathering of glacially-abraded limestone surfaces as determined by various Schmidt hammer tests; Biferten glacier forefield, Glarner Alps (Switzerland)
摘要：The Schmidt hammer method was successfully used in determining early stages of weathering of glacially-abraded Jurassic limestone surfaces within the post-LIA forefield of the Biferten glacier (Switzerland).It was shownthat the formerly glaciated landforms are differentiated in terms of mean and maximum R-values and when comparing betweenstandard deviation of R-values from polished and non-polished surfaces.It is concluded that the most important factorsin R-value differentiation within the young marginal zones are duration of weathering and rock structure.However, thefirst factor can only be detected on non-polished surfaces.
关键词：Schmidt hammer; stages of weathering; dating of glacial landforms; Biferten glacier
