Cretaceous?Cenozoic cooling history of the Qiangtang terrane and implications for Central Tibet formation

Reconstructing the growth process of Qiangtang terrane in space and time is crucial for understanding geological evolution Central Tibet. However, its dynamic mechanism remain unclear. Here, we present new fission track data obtained along a N-S transect near Puruo Kangri Mountain central zone Northern terrane. The completely reset apatite ages detrital samples range from 65.1 to 89.6 Ma, which show northward younging trend. thermal history modeling results indicate that this region underwent northward-propagating exhumation during Late Cretaceous (ca. 92?65 Ma). Our data, combined with previously reported low-temperature thermochronology terrane, suggest experienced three main stages cooling: ca. 120?65, 55?35, <25?0 Ma. first stage 120?65 Ma) displays an outward-propagating cooling pattern was related crustal shortening thickening driven by Lhasa-Qiangtang collision. low rate, flat lavas, paleoaltimetry studies imply southern zones may form plateau landscape 65?55 second 55?35 mainly documented Southern northern This event caused deformation intracontinental subduction ongoing convergence Indian Asian plates. Subsequently, both transition erosion rates (<0.05 mm/yr) became primitive 35 final (<25?0 linked E-W extension