Sequence stratigraphy of the Cryogenian Nantuo Formation in South China: Constraints on Marinoan glaciation dynamics

•Diverse sedimentary environments capture the evolution of Marinoan glaciation.•These Marinoan deposits record two complete, symmetrical sedimentary cycles.•Patterns of cyclic environmental changes are consistent with global-scale controls.•Marinoan glaciation gradually transited into the Ediacaran greenhouse.