@article{fdi:010070299, title = {{S}tress field evolution above the {P}eruvian flat-slab ({C}ordillera {B}lanca, northern {P}eru)}, author = {{M}argirier, {A}. and {A}udin, {L}aurence and {R}obert, {X}avier and {P}echer, {A}. and {S}chwartz, {S}.}, editor = {}, language = {{ENG}}, abstract = {{I}n subduction settings, the tectonic regime of the overriding plate is closely related to the geometry of the subducting plate. {F}lat-slab segments are supposed to increase coupling at the plate interface in the {A}ndes, resulting in an increase and eastward migration of the shortening in the overriding plate. {A}bove the {P}eruvian flat-slab, a 200 km-long normal fault trend parallel to the range and delimits the western flank of the {C}ordillera {B}lanca. {I}n a context of flat subduction, expected to produce shortening, the presence of the {C}ordillera {B}lanca normal fault ({CBNF}) is surprising. {W}e performed a systematic inversion of striated fault planes in the {C}ordillera {B}lanca region to better characterize the stress field above the {P}eruvian flat-slab. {I}t evidences the succession of different tectonic regimes. {NE}-{SW} extension is predominant in most of the sites indicating a regional extension. {W}e suggest that the {P}eruvian flat-slab trigger extension in the {W}estern {C}ordillera while the shortening migrated eastward. {F}inally, we propose that flat-slab segments do not increase the coupling at the trench neither the shortening in the overriding plate but only favor shortening migration backward. {H}owever, the stress field of the overriding plate arises from the evolution of plate interface properties through time due to bathymetric anomaly migration.}, keywords = {{I}nversion of striated fault planes ; {C}rustal stress field ; {M}ountain building ; {P}eruvian flat-slab ; {C}ordillera {B}lanca ; {PEROU} ; {CORDILLERA} {BLANCA}}, booktitle = {}, journal = {{J}ournal of {S}outh {A}merican {E}arth {S}ciences}, volume = {77}, numero = {}, pages = {58--69}, ISSN = {0895-9811}, year = {2017}, DOI = {10.1016/j.jsames.2017.04.015}, URL = {https://www.documentation.ird.fr/hor/fdi:010070299}, }