Increase in late Neogene denudation of the European Alps confirmed by analysis of a fission-track thermochronology database

摘要: Abstract A sharp increase in deposited sediment volume since Pliocene times has been observed worldwide and particular around the European Alps. This phenomenon linked to a rise denudation rates controlled by an of either climatic or tectonic forcing. Observation in-situ cooling histories for orogens is critical assess reality inferred rates, determine whether this widespread localized at active structures. We exploit unique density fission-track ages Western Alps reconstruct isoage surfaces estimate exhumation on orogen scale between 13.5 2.5 Ma. Our novel technique based association contours with age–elevation relationships. It uses map-view interpolation, enabling spatio-temporal analysis over entire The resulting reconstructed eight areas display strong similarities timing orogen-wide average from volumes. consistency validates use both techniques study characterized relief high recent rates. conclude that have increased more than twofold Late Miocene times. may locally modulated distinct response different units.