Quaternary river incision in NE Ardennes (Belgium)–Insights from 10Be/26Al dating of river terraces

<sup>10</sup>Be depth profiles in glacial sediments on the Swiss Plateau: deposition age, denudation and (pseudo-) inheritance

“…10 Be is produced by neutrogenic spallation and by muogenic interaction, mainly with oxygen (Gosse and Phillips, 2001;Heisinger et al, 2002a, b). In the last years, the application of 10 Be depth profiles has become an important method to date unconsolidated sediments (Hidy et al, 2010;Rixhon et al, 2011;Haghipour et al, 2014;Akçar et al, 2014;Delmas et al, 2015;Ruszkiczay-Rüdiger et al, 2016;Claude et al, 2017;Schaller et al, 2009). The advantage of this method is that it allows not only to calculate the age of the deposit but also denudation rate and the inherited share of 10 Be, accumulated in the catchment.…”

“…When modeled steady-state denudation rates increase with depth, equilibrium has not been reached yet. Decreasing denudation rates indicate inheritance and/or complex deposition histories (Delmas et al, 2015;Ruszkiczay-Rüdiger et al, 2016). Constant denudation rates with depth indicate that the…”

“…In situ produced 10 Be is produced at the Earth surface by cosmic radiation, and production decreases exponentially with depth (Gosse and Phillips, 2001). Until now, depth profile dating has mainly been applied to terraces and alluvial fans (Hidy et al, 2010;Rixhon et al, 2011;Haghipour et al, 2014;Akçar et al, 2014;Delmas et al, 2015;Ruszkiczay-Rüdiger et al, 2016;Claude et al, 2017;Schaller et al, 2009). In order to determine the deposition age of a moraine, one would generally sample large, stable erratic boulders for 10 Be surface exposure dating (Heyman et al, 2016).…”

Research on fluvial archives: from diversity to multidisciplinarity

“…Cordier et al, 2012b;Medialdea et al, 2014). The dating of older sediments (back to the Pliocene) has been made possible by the development of cosmogenic nuclide dating, which has been successfully applied in various areas (Rixhon et al, 2011;Stange et al, 2013). An alternative method is the use of the Electron Spin Resonance (ESR) technique, which has been applied to several fluvial systems, particularly in Northern France and the surrounding areas (Antoine et al, 2007;Harmand et al, 2015).…”

“…This study provides complementary geochronological data additional to those already obtained from the youngest terraces of these systems (Cordier et al, 2014a). It also allows a renewed comparison with the neighbouring Meuse system, in particular concerning the formation of the Main Terrace Complex (Rixhon et al, 2011).…”