The geochemical behavior of trace elements (TE) and rare earth elements (REE) was evaluated in the region of Lavras (MG), during the pedogenetic evolution in soil profiles with argillic horizons differentiated by acid, intermediate and basic compositions of the parent material.Chemical analyses of TE and REE were performed along the profiles and gains and losses were evaluated through mass chemical balance.The study allowed to group the TE into two classes: (a)moderate to high mobility: loss from the consolidated rocks to the solum; and (b)moderate mobility: relative and occasionally real enrichments in the solum.The REE showed a great mobility throughout the evolution of the alteration profiles.
soils with argillic horizon; X-ray fluorescence spectrometry (XRF); atomic emission spectroscopy with inductive coupled plasm (ICP); chemical balance; pedological evolution