![]() ![]() A Key Result Is Also That A Steady State Of Be-10 Concentrations And A Steady State Of Regolith Thickness Are Two Different Equilibrium States That Do Not Necessarily Coincide. ![]() These Biases Are Significant For Investigating The Geomorphological Evolution And We Propose A Method To Correct Denudation Rates Using The Inherited Be-10 Concentrations And The Cosmic Ray Exposure Age Deduced From The High-Resolution Depth Profiles. Maximum Spatially Averaged Denudation Rates Determined From Stream Sediment Samples Also Likely Overestimate Denudation Rates By A Factor Of Two. Comparison With Maximum Denudation Rates Inferred From Topsoil Samples Collected From The Surface Of The Depth Profiles And Calculated Using The Temporal Steady-State Assumption Of Be-10 Concentrations Highlights An Overestimation Of Denudation By A Factor Of Two. The Modelling Of Regolith Evolution And Be-10 Concentrations Along Depth Profiles Allow Us To Estimate Both The Cosmic Ray Exposure Age (19 Kyr) And The Mean Denudation Rate (22 Mm Kyr(-1)) Of The Regolith Without Any Steady-State Assumption On Be-10 Concentrations. High-Resolution Depth Profiles Are Key To Detect The Presence Of Mobile Regolith And To Highlight How It Affects The Critical Zone Evolution. Abstract: A Rare Dataset Of In-Situ Be-10 From High-Resolution Depth Profiles, Soils, Rock Outcrops, And Stream Sediments Is Combined With Geochemical Analysis And Modelling Of Regolith Evolution To Understand The Variability Of Denudation Rates In A Mountain Watershed (Strengbach Critical Zone Observatory).
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