The 21st International Sedimentological Congress (ISC) is held every four years, and is sponsored by the International Association of Sedimentologists (IAS). These congresses aim to gather participants from all over the world to share and discuss the most recent advances in the field of sedimentology. The China University of Geosciences (Beijing) is honored to host this international event on August 22–26, 2022, in collaboration with the following co-organizers: China National Petroleum Corporation (CNPC), China National Offshore Oil Corporation (CNOOC), China Petroleum & Chemical Corporation (SINOPEC), Chinese Association of Sedimentologists (CAS), and National Natural Science Foundation of China (NSFC).