The application of zircon fission track to the study of the uplifting process in the Mohe Basin

By analyzing 32 zircon fission track samples from Mohe Basin, the authors have found that the maximum fission track age is 143.9±18.7Ma, the minimum age is 58±12.1Ma, and the peak ages are 92~98Ma and 132~138Ma. The authors hold the opinion that Mohe Basin experienced two strong uplift processes at 95Ma and 135Ma, based on considering the basin fault system and geotectonic background. The authors hold that Mohe Basin was in a SN-trending compression environment from the Late Jurassic (135Ma), and was in an extensional environment during Middle Cretaceous. Then the basin was in a SN-trending compression environment once again in the Late Cretaceous, leading to another strong uplift.