Mechanisms for initiation and termination of extraordinarily high total organic carbon in the Longmaxi Formation, Yangtze Platform, South China - Zongyuan Sun; Hao Chen; Xianguo Lang; Bolin Zhang; Qing Chen; Kun Zhao; Shengxian Zhu; Fangqi Zhao; Feng Liang; Chuyuan Liu; Junxuan Fan (Marine and Petroleum Geology, 2025)