Light hydrocarbons composition and carbon isotopes unravel the origin of natural gas in Triassic marine strata of Moxi gas field, central Sichuan Basin - Guo, Chuyuan; Hu, Guoyi; Li, Jin; Tian, Xingwang; Tian, Lianjie; Guo, Jinhao; Cui, Huiying; Liu, Zhen; Li, Xianqing (Frontiers in Earth Science, 2025)