Constraints on Pleistocene glaciofluvial terrace age and related soil chronosequence features from vertical 10Be profiles in the Ariège River catchment (Pyrenees, France)

<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).…”

Denudation intensity and control in the Chinese Tian Shan: new constraints from mass balance on catchment‐alluvial fan systems

“…Over the last 300 kyr, the evolution of the sediment fluxes from the Tian Shan to the Junggar Basin is thus clearly climate‐driven, as observed in other places at the same period (Church and Ryder, ; Church and Slaymaker, ; Delmas et al. ). However, once corrected for this sediment recycling, the average denudation rates in the long‐standing part of the drainage basins are quite similar for the two periods (∼100 and ∼170 m/Myr).…”

“…This increase is a direct consequence of the downstream extension of the catchment areas associated with sediment reworking due to the last glacial-interglacial transition (Molnar et al, 1994;Poisson, 2002;Poisson and Avouac, 2004;Lu et al, 2010;Gong et al, 2014). Over the last 300 kyr, the evolution of the sediment fluxes from the Tian Shan to the Junggar Basin is thus clearly climate-driven, as observed in other places at the same period (Church and Ryder, 1972;Church and Slaymaker, 1989;Delmas et al, 2015). However, once corrected for this sediment recycling, the average denudation rates in the long-standing part of the drainage basins are quite similar for the two periods ( 100 and 170 m/Myr).…”