Jian MA^1,2, Chaodong Wu¹, Xingqian Cui², Ryosuke Saito^2,3, Gareth Izon² and Roger E Summons², (1)Peking University, School of Earth and Space Sciences, Beijing, China, (2)Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (3)Tohoku University, Sendai, Japan