Kristina Hippe: Landscape evolution and environmental change: New perspectives from the in situ cosmogenic 14C 10Be chronometer
od 14:50 do 16:20
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Cosmogenic 14C produced within quartz has opened up new opportunities in Earth surface sciences and in the study of terrestrial paleoclimate. Quantifying complex surface exposure histories of glacial landscapes has so far been the primary application for in situ 14C analysis. The insensitivity of in situ 14C to surface pre-exposure and its high sensitivity to post-exposure surface shielding has made the 14C-10Be nuclide pair an excellent tool for unravelling complex glacier chronologies in different glacial environments worldwide. However, beyond glacial settings emerging research on in situ 14C in sedimentary systems highlights the capacity of the 14C-10Be chronometer to quantify sediment transfer times in fluvial catchments or to constrain past changes in surface erosion rates as well as erosional events.