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Fault-propagation folds are important contractional structures developed in upper crustal conditions. Here we analyze a fault-propagation fold, made up of Carboniferous limestones, sited in the Cantabrian fold and thrust belt, NW Iberian Peninsula. The technique employed consists of detailed structural analysis integrated with cross-section restoration. Such approach allowed us to validate the geological interpretation and to decipher the deformation architecture using an inverse model based on strain markers. The results are illustrated overlapping contour maps and diagrams on top of the deformed, present-day cross section. [ABSTRACT FROM AUTHOR]