<sup>40</sup>Ar-<sup>39</sup>Ar thermochronological evidence for formation and tectonic exhumation of the northern-central segment of the Altyn Tagh Fault System in the Mesozoic, northern Tibetan Plateau

† School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, CHINA ‡ Geologic Laboratories Center and Department of Geology, China University of Geosciences, Beijing 100083, CHINA § Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, CHINA ¶ Institute of Geology, China Seismological Bureau, Beijing 100029, CHINA # Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, CHINA