Quantification of post-glacier bedrock surface erosion in the European Alps using ¹⁰Be and optically stimulated luminescence exposure dating

Abstract. The retreat of glaciers since the Last Glacial Maximum in European Alps has left an imprint on topography through various erosional processes. However, few methods are currently capable resolving these mechanisms Late to Holocene timescales. Quantifying relative contributions mountain erosion, during different climate cycles, is useful for understanding long-term landscape evolution and links between global erosion. Here, we combine three optically stimulated luminescence (OSL) exposure dating signals with 10Be surface constrain post-glacier erosion rates bedrock samples adjacent Gorner Glacier Alps. results reveal order 10−2 10−1 mm a−1, general agreement other studies region, as well a strong negative correlation rate elevation, suggesting that frost crack weathering perhaps not dominant form weathering. Finally, compilation both subglacial periglacial shows could be greater than previously thought. Yet remains higher, implying it continues have stronger influence shaping landscapes. Therefore, changing climate, likely remain transient. These insights lead important implications models.