Quantifying denudation rates and sediment storage on the eastern Altiplano, Bolivia, using cosmogenic 10Be, 26Al, and in situ 14C

► Cosmogenic 10Be and 26Al record slow denudation processes on the eastern Altiplano. ► Our data proposes long-term steady-state conditions on the eastern Altiplano. ► Cosmogenic in situ 14C allows quantifying sediment storage. ► Sediment residence times of at least 11-20 ky occur over distances of only a few km.