@article{fdi:010042737, title = {{D}eformación compresiva cuaternaria en la {C}ordillera {P}rincipal de {C}hile central ({C}ajón del {M}aipo, este de {S}antiago) = {Q}uaternary compressional deformation in the {M}ain {C}ordillera of {C}entral {C}hile ({C}ajon del {M}aipo, east of {S}antiago)}, author = {{L}avenu, {A}lain and {C}embrano, {J}.}, editor = {}, language = {{SPA}}, abstract = {{A} detailed study of recent sediments in the {M}aipo {R}iver {V}alley ({C}ajon del {M}aipo), east of {S}antiago, shows a compressive deformation documented by coeval reverse faults and drag-folds. {T}hese structures are characteristic of a principal stress direction trending roughly {N}-{S} ({N}338 degrees {E}) that also affects the older sediments of the {A}banico {F}ormation constituting the bedrock of the {Q}uaternary alluvial terraces. {T}wo deformation episodes are superposed in the bedrock: a {N}eogene deformation event (post 9 {M}a), having an {E}-{W}-trending sigma 1, and a late {Q}uaternary event with sigma 1 roughly trending {N}-{S}. {T}he latter would be the result of regional-scale partitioning of the oblique convergence vector between the {N}azca and {S}outh {A}merican {P}lates; a buttress at 33 degrees {S} would produce a north-south velocity gradient in the forearc leading to regional, north-south shortening. {S}hallow crustal seismicity in the inner forearc ({M}ain {C}ordillera) is -at least in part- compatible with the compression direction as obtained from the kinematic analysis of mesoscopic fault-slip data.}, keywords = {{F}orearc ; {N}eotectonics ; {S}train ; {S}tress ; {Q}uaternaty ; {C}entral chile ; {A}ndes}, booktitle = {}, journal = {{R}evista {G}eologica de {C}hile}, volume = {35}, numero = {2}, pages = {233--252}, ISSN = {0716-0208}, year = {2008}, DOI = {10.4067/{S}0716-02082008000200003}, URL = {https://www.documentation.ird.fr/hor/fdi:010042737}, }