30 de juliol de 2021
Viaplana-Muzas, Marc & Struth, Lucía. (2021). Drainage Development During Mountain Building. 10.1016/B978-0-12-818234-5.00085-7.
Abstract
Mountain belt landscapes result from the competition between deep and surface processes. During mountain building, deep phenomena (referrer to tectonic processes) increase or decreases the topography, modifying the surface slopes. Concurrently, surface processes controlled by the erosion-transport-sedimentation interplay erode the high areas and fill the low laying regions. In tectonically active landscapes, fluvial network adjusts their geometry in response to changes in boundary conditions to reach a steady state where erosion balances uplift. Interaction between tectonics and river network defines drainage network organization which the sediment dispersion and basin architecture. In addition, fluvial adjustment is related to drainage divide migration triggering fluvial captures that modifies catchment areas, local base levels, erosion rates, and, ultimately, deposition rates in the surrounding basins. The Eastern Cordillera of Colombia well illustrates all these processes and feedbacks. This cordillera presents a longitudinal-dominated drainage located in the inner part of the orogen captured by a transverse-dominated drainage network located in the surrounding flanks.