@article{fdi:010078050,
  title = {{G}iant landslide triggerings and paleoprecipitations in the {C}entral {W}estern {A}ndes : the aricota rockslide dam ({S}outh {P}eru)},
  author = {{D}elgado, {F}. and {Z}erathe, {S}wann and {A}udin, {L}aurence and {S}chwartz, {S}. and {B}enavente, {C}. and {C}arcaillet, {J}. and {B}ourles, {D}. {L}. and {T}eam, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he central part of the {W}estern {A}ndes holds an exceptional concentration of giant paleolandslides involving very large volumes of rock material (v > km(3)). {W}hile those gravitational slope failures are interpreted consensually as an erosional response to the geodynamic activity of the {A}ndes (relief formation and tectonic activity), the question of their triggering mechanisms remains enigmatic. {T}o clarify the respective roles of climatic versus seismic forcing on the {A}ndean landslides, new temporal constraints on paleo movements are essential. {H}ere, we focus on one of those giant slope failures, the {A}ricota giant rockslide that damned the {L}ocumba valley in southern {P}eru. {W}e conducted fieldwork, high-resolution {DEM} analysis and cosmogenic nuclide dating to decipher its development history and failure mechanisms. {O}ur results point to the occurrence of two successive events. {A} giant failure mobilizing a rock volume of ca. 2 km(3) first produced a dam at 17.9 +/- 0.7 ka. {C}onsidering its height of ca. 600 m, the {A}ricota rockslide dam is one of the three largest landslide dams worldwide. {A}t 12.1 +/- 0.2 ka, a second event produced ca. 0.2 km(3) of material, and the rock-avalanche debris spread out over the dam. {A}s the chronology of those two events is pointing to the two main paleoclimatic pluvial periods in this region ({H}einrich {S}tadial 1a and {Y}ounger {D}ryas), we favor the interpretation of a climatic forcing. {A}t a regional scale, the concomitant aggradation of alluvial terraces and fan systems along the nearby valleys highlights higher regional erosion, sediments supply and mass-wasting events during those paleoprecipitation events and strengthens this conclusion.},
  keywords = {{G}iant landslide dam ; {C}entral {W}estern {A}ndes ; {B}e-10 dating ; {T}riggering factors ; {PEROU} ; {ANDES}},
  booktitle = {},
  journal = {{G}eomorphology},
  volume = {350},
  numero = {},
  pages = {art. 106932 [15 ]},
  ISSN = {0169-555{X}},
  year = {2020},
  DOI = {10.1016/j.geomorph.2019.106932},
  URL = {https://www.documentation.ird.fr/hor/fdi:010078050},
}