Meso-cenozoic tectonic evolution of the ziyun-luodian fault in SW China

Regional-scale fault systems are important in adjusting intracontinental deformation. Closure of the Paleo-Tethys, Paleo-Pacific subduction, and India-continent-continent collision have all interacted to shape Meso-Cenozoic tectonics South China. The Ziyun-Luodian (ZLF) straddles across Guizhou region southwestern New petrographic structural studies were conducted reveal evolution ZLF regional At least three distinct deformation events identified within zone: During Indosinian orogeny, dextral thrusting occurred along ZLF, accompanied by moderate uplift Guizhou, as evidenced Upper Triassic-Lower Jurassic disconformity. main tectonic framework was established during Yanshanian orogeny. Driven west-dipping subduction (Middle Jurassic-Early Cretaceous), sinistral transpression NE-to N-S-trending fold belts central-eastern NW-striking folds west developed under nearly E-W-directed compression. In late Cenozoic, may undergone strike-slip movement, similar Ailaoshan-Red River shear zone. plays an role accommodating SW