@article{fdi:010079144,
  title = {{A}ctive tectonics and earthquake geology along the {P}allatanga fault, {C}entral {A}ndes of {E}cuador},
  author = {{B}aize, {S}. and {A}udin, {L}aurence and {A}lvarado, {A}. and {J}omard, {H}. and {B}ablon, {M}. and {C}hampenois, {J}. and {E}spin, {P}. and {S}amaniego, {P}ablo and {Q}uidelleur, {X}. and {L}e {P}ennec, {J}ean-{L}uc},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ased on new geological data and the analysis of a 4 m spatial resolution {D}igital {E}levation {M}odel ({DEM}), we provide a detailed and comprehensive description of section of the {C}hingual {C}osanga {P}allatanga {P}una {F}ault {S}ystem, a major active fault system in {E}cuador. {T}his work allows estimating new slip rates and large earthquakes parameters (displacement, recurrence) along a similar to 100 km-long section of the continental-scale dextral shear zone that accommodates the extrusion of the {N}orth {A}ndean {S}liver with respect to the {S}outh {A}merica continental {P}late. {W}e focus on the {NE}-{SW} {P}allatanga strike-slip fault zone and related contractional and transcurrent features that extend to the north in the {I}nter-{A}ndean valley and the {C}ordillera {R}eal, respectively. {T}he detailed analysis of the available {DEM} allowed mapping a series of lineaments at the regional scale and along the entire fault system. {F}ield studies on key areas show valley deflections, aligned and elongated hills of {T}ertiary or {Q}uaternary sediments, as well as faulted {H}olocene deposits and even preserved coseismic free-face ruptures in some places. {S}uch morphological anomalies strongly suggest that those landscape scars represent long-living ({H}olocene to historical times) earthquake faults. {A}ltogether, these new data confirm that very large crustal earthquakes ({M} similar to 7.5) have been generated along the fault system, probably during multiple segment ruptures. {T}his conclusion agrees with reports of large earthquakes during historical times (post-1532 {CE}) in 1698, 1797, and 1949. {T}hey all occurred in the vicinity of the {P}allatanga fault, causing catastrophic effects on environmental and cultural features. {B}ased on new sample dating of both soils and volcanic series, we infer that the {NE}-{SW} dextral {P}allatanga fault slips at rates ranging from similar to 2 to 6 mm/yr for southern and central strands of the studied area, respectively. {F}urther north, surface faulting is distributed and the deformation appears to be partitioned between sub-meridian fault-related folds (similar to 2 mm/yr) and {NE}-{SW} strike-slip fault(s), like the similar to 1 mm/yr {P}isayambo {F}ault that ruptured the surface in 2010. {A}ll this information offers the opportunity to size the earthquake sources for further seismic hazard analyses.},
  keywords = {active tectonics ; earthquake ; {P}allatanga fault ; {A}ndes ; {E}cuador ; {EQUATEUR} ; {ANDES} ; {PALLATANGA} {REGION}},
  booktitle = {},
  journal = {{F}rontiers in {E}arth {S}cience},
  volume = {8},
  numero = {},
  pages = {art. 193 [21 p.]},
  year = {2020},
  DOI = {10.3389/feart.2020.00193},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079144},
}