Channel Profiles Reveal Fault Activity along the Longmen Shan, Eastern Tibetan Plateau

Assessing fault activity in regions lacking Quaternary sedimentary constraints remains a global challenge. In this study, we used channel slope distribution to examine variations rock uplift along faults. By comparing steepness with published low-temperature thermochronology and paleo-seismic data, identified deformation changes both perpendicular the Longmen Shan at various time scales. Our data revealed distinct segments displaying thrust activities Shan’s strike. southern segment, Dachuan exhibited highest activity, its movement had persisted for millions of years. central Wenchuan was active during theearly but has become dormant since late Pleistocene. Within past years, Yingxiu Pengguan faults displayed significant vertical displacement. Fault northern relatively weak, Qingchuan transitioning from Neogene pure strike-slip Overall, Huya patterns similar Quaternary. Similar fault, which triggered earthquake, possess capacity produce earthquakes future. The system underscore importance upper crustal shortening shaping topography eastern Tibetan Plateau margin.