Fil: Sepúlveda, Sergio A. Universidad de Chile. Departamento de Geología. Santiago, Chile.Fil: Giambiagi, Laura B. IANIGLA-CCT Mendoza-CONICET. Mendoza, Argentina.Fil: Moreiras, Stella M. IANIGLA-CCT Mendoza-CONICET. Mendoza, Argentina.Fil: Pinto, Luisa. Universidad de Chile. Departamento de Geología. Santiago, Chile.Fil: Tunik, Maisa A. Universidad Nacional de Rio Negro. Río Negro, Argentina.Fil: Hoke, Gregory D. Syracuse University, Department of Earth Sciences. New York, USA.Fil: Farías, Marcelo. Universidad de Chile. Departamento de Geología. Santiago, Chile.trueThe Andes, the world’s largest non-collisional orogen, is considered the paradigm for geodynamic processes associated with the subduction of an oceanic plate below a continental plate margin. In the framework of UNESCO-sponsored IGCP 586-Y project, this Special Publication includes state-of-the-art reviews and original articles from a range of Earth Science disciplines that investigate the complex interactions of tectonics and surface processes in the subductionrelated orogen of the Andes of central Chile and Argentina (c. 27–398S). This introduction provides the geological context of the transition from flat slab to normal subduction angles, where this volume is focused, along with a brief description of the individual contributions ranging from internal geodynamics and tectonics, Quaternary tectonics and related geohazards, to landscape evolution of this particular segment of the Andes.