Yiqun Yu¹, Dong Wei¹, Fei He², Jinbin Cao¹, Aaron J Ridley³ and Malcolm Wray Dunlop⁴, (1)Beihang University, Beijing, China, (2)Institute of Geology and Geophysics, Chinese Academy of Science, Beijing, China, (3)Univ Michigan, Ann Arbor, MI, United States, (4)Beihang University, School of Space and Environment, Beijing, China