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The different segments of the Andean thrust system have distinctive topography and inferred crustal roots. These two characteristics both depend upon crustal shortening, and on this basis they provide independent constraints for evaluating estimates of Cenozoic shortening obtained by balanced structural cross-sections of different segments of the fold-and-thrust systems. Three transects in the Central Andes are analyzed: a northern (22–23°S), a central (32–33°S), and a southern segment (37–39°S). Each segment shows different amounts of orogenic shortening, generated through a complex combination of thin- and thick-skinned thrusting. Based on known age constraints, different shortening rates are calculated for each segment....

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