Cosmonuclide depth-profiles can be used to calculate the age of landforms, the rates at which erosion has affected them since their formation and, in case of deposits, the erosion rate in the source area. Results are heavily dependent on the selection of the appropriate density of the material exposed to cosmic radiation. In materials where density has changed significantly through time, as in alluvial sediments affected by post-depositional calcrete cementation, the uncertainties in density must be accurately modelled to produce reliable results In this work, we present new techniques in depth-profile sampling, density measuring and new equations for an accurate account of density uncertainties. This methodology has been specifically developed to improve cosmogenic depth-profile dating of deposits cemented under semi-arid conditions. Six ¹⁰Be depth-profiles measured in an alluvial fan related to the Carboneras , Albox and Alhama de Murcia Faults (SE Iberia) are presented as natural examples.