@article{fdi:010077355, title = {{T}he {E}smeraldas canyon : a helpful marker of the {P}liocene-{P}leistocene tectonic deformation of the {N}orth {E}cuador-{S}outhwest {C}olombia convergent margin}, author = {{C}ollot, {J}ean-{Y}ves and {R}atzov, {G}. and {S}ilva, {P}. and {P}roust, {J}. {N}. and {M}igeon, {S}. and {H}ernandez, {M}. {J}. and {M}ichaud, {F}. and {P}azmino, {A}. and {C}astillo, {D}. {B}. and {A}lvarado, {A}. and {K}humara, {S}.}, editor = {}, language = {{ENG}}, abstract = {{D}eciphering the migration pattern of the {E}smeraldas submarine {C}anyon ({EC}) and its history of cut-and-fill allows constraining the {P}liocene-{P}leistocene tectonic evolution of the {E}cuador-{C}olombia convergent margin. {S}wath bathymetry, multichannel seismic reflection, and chronological data show that the {EC} is a 143-km-long, shelf-incising, river-connected canyon that started incising slope apron deposits in the {M}anglares fore-arc basin similar to 5.3 {M}a ago. {T}he {EC} inception appears contemporaneous with the subduction of the {C}arnegie {R}idge that is believed to have initiated 5-6 {M}yr ago and is considered an indirect cause of the {EC} formation. {D}uring its two-stage left-lateral migration, the {EC} upper-half scoured deep incisions providing evidences for uplift episodes in the {M}anglares {B}asin that are correlated with mid-{P}liocene and {P}leistocene regional tectonic events. {G}lacioeustatic variations contributed significantly to shape the {EC} and its upslope tributaries by increasing the rate of canyon incision during rapid sea level falls. {F}aults, folds, and diapirs have structurally controlled the location of the {EC} and of its tributary canyons, including the {A}ncon {C}anyon, which served as the main spillway of the {M}anglares {B}asin prior to be cut from its source similar to 170 kyr ago by the growth of a fault-related anticline. {T}he margin wedge that hosts the {EC} is highly unstable as it is cut by active faults and shaken by large subduction earthquakes. {S}everal mass transport deposits have dammed the {EC}, one of them between >similar to 65 and similar to 37 kyr causing an impoverishment of detrital material in the trench sedimentation and a possible interruption of the paleoseismological record.}, keywords = {convergent margin tectonics ; submarine canyon ; fore-arc basin ; natural hazards ; paleoseismology ; {EQUATEUR} ; {COLOMBIE} ; {ESMERALDAS} {CANYON} ; {ANDES} ; {PACIFIQUE} {EST}}, booktitle = {}, journal = {{T}ectonics}, volume = {38}, numero = {8}, pages = {3140--3166}, ISSN = {0278-7407}, year = {2019}, DOI = {10.1029/2019tc005501}, URL = {https://www.documentation.ird.fr/hor/fdi:010077355}, }