Geodynamic Processes in the Andes of Central Chile and Argentina
This Special Publication arises from the UNESCO-sponsored IGCP 586-Y project ‘The tectonics and geomorphology of the Andes (32°–34°S): interplay between short-term and long-term processes’. It includes state-of-the-art reviews and original articles from a multidisciplinary perspective that investigate the complex interactions of tectonics and surface processes in the subduction-related orogen of the Andes of central Chile and Argentina (c. 27°–39°S). It aims to improve our understanding of tectonic and landscape evolution of the Andean range at different time scales, as well as the mutual relationship between internal and external mechanisms in Cenozoic deformation, mountain building, topographic evolution, basin development and mega-landslides occurrence across the flat slab to normal subduction segments. The geodynamic processes of the Andes of central Chile and Argentina are analysed from a number of subdisciplines of the Earth sciences, including tectonics, petrology, geophysics, geochemistry, structural geology, geomorphology, engineering geology, stratigraphy and sedimentology.
Erosion in the Chilean Andes between 27°S and 39°S: tectonic, climatic and geomorphic control
Published:January 01, 2015
S. Carretier, V. Tolorza, M. P. Rodríguez, E. Pepin, G. Aguilar, V. Regard, J. Martinod, R. Riquelme, S. Bonnet, S. Brichau, G. Hérail, L. Pinto, M. Farías, R. Charrier, J. L. Guyot, 2015. "Erosion in the Chilean Andes between 27°S and 39°S: tectonic, climatic and geomorphic control", Geodynamic Processes in the Andes of Central Chile and Argentina, S. A. Sepúlveda, L. B. Giambiagi, S. M. Moreiras, L. Pinto, M. Tunik, G. D. Hoke, M. Farías
Download citation file:
The effect of mean precipitation rate on erosion is debated. Three hypotheses may explain why the current erosion rate and runoff may be spatially uncorrelated: (1) the topography has reached a steady state for which the erosion rate pattern is determined by the uplift rate pattern; (2) the erosion rate only depends weakly on runoff; or (3) the studied catchments are experiencing different transient adjustments to uplift or to climate variations. In the Chilean Andes, between 27°S and 39°S, the mean annual runoff rates increase southwards from 0.01 to 2.6 m a−1 but the catchment averaged rates of...