Comment on: ‘Multi-element signatures of stream sediments and sources under moderate to low flow conditions’ by M.I. Stutter, S.J. Langan, D.G. Lumsdon, L.M. Clark

摘要: In a recent paper on ‘Multi-element signatures of stream sediments and sources under moderate to low flow conditions’, Stutter et al., 2009 M.I. Stutter, S.J. Langan, D.G. Lumsdon L.M. Clark, Multi-element conditions, Appl. Geochem. 24 (2009), pp. 800–809. Article | PDF (392 K) View Record in Scopus Cited By (2)Stutter al. (2009) presented results simple sediment source tracing method based major trace elements for small agricultural catchment NE Scotland. The authors reported statistically significant, larger concentrations four (Ce, Nd, Th Y) bank subsoils (n = 5) bed 3) compared topsoils from both pasture arable land. They used these differences aid discrimination between topsoil subsoil (stream erosion) contributions sediment. These may be more depleted because the former have been subject intense weathering over longer period. If naturally occurring could understand relative proportions headwater this approach might applied widely elucidate transport pathways transfer contaminants such as particulate phosphorus streams (Walling 2008). This warrants further investigation across range catchments at different scales with contrasting land use bedrock types. can undertaken using data regional-scale geochemical surveys (Johnson 2005) which include analyses samples. Previous studies shown that much lowland central England is risk watercourses via drains (Chapman 2003). A survey part covering 15 400 km2 was recently are well-suited testing whether three identified by discriminate widely. Specifically, if significantly smaller than subsoil, due mixing lower elements. Below survey, methods author compare described, findings their implications discussed.