Geological hazard characteristics, sources, and distribution patterns of shallow natural gas in the Dachiganjing structure belt, Eastern Sichuan: an integrated geochemical, isotopic, and petrographic approach. - He, Kunchen; Su, Peidong; Li, Huizhen; Yang, Shaojun; Yang, Yong; Zhao, Yi; Ahmed, Mohamed S.; Mansour, Ahmed (Natural Hazards, 2025)