Andean-type (Cordilleran-type) mountain belts form at continental (Andean) volcanic arcs, where oceanic lithosphere is subducted beneath continental lithosphere along an active continental margin, generating a linear mountain chain built by a combination of arc volcanism, crustal thickening, and tectonic uplift, distinct from island arcs (ocean-ocean subduction), continental collision zones (continent-continent convergence, e.g., the Himalaya), or continental rift zones (extensional settings).