Abstract:Through the detailed geological survey of Xiahuayuan Xiajiagou-guchengliang outcrop, Huailai Zhaojiashan outcrop and Chicheng Guzifang outcrop in Hebei Province, the lithologic changes, sedimentary sequence and sea level evolution, rock mineral composition and heavy mineral assemblage of Xiamaling formation deposited 1.4 billion years ago are analyzed. It is considered that warm and humid climatic conditions and multi-stage tropical storms developed during the deposition of Xiamaling formation. The large-scale storm and turbidite deposition in early stage, and the shallow shelf tempestite, deep-water shelf shale, fine-grained turbidite and marl lens in quiet water in late stage are the distinct responses. During this period, a long-term slow sea-level rise and rapid sea-level decline developed, and it can be subdivided into five sea-level changes, corresponding to five third-order sequences. The material composition of Xiamaling formation is mainly sandy and argillaceous in the early stage, and it is mainly argillaceous, calcareous and dolomitic in the late stage, and the sand is reduced. The two types of material combination system successively affect the Yanliao basin. The Xiamaling formation has a dual provenance in the sedimentary period. In addition to the continuous supply from the Shanhaiguan paleouplift in the East, the Western Shanxi ancient land may also provide the provenance in the late stage, and the Inner Mongolia northern Hebei uplift (Inner Mongolia axis) does not exist in the north. Yanliao basin has the characteristics of dustpan like rift basin with steep West and gentle East. The changes of paleotopography, provenance supply and multi-level sea level oscillation control the temporal and spatial evolution of Xiamaling formation sediments. This understanding provides an important reference for the restoration of lithofacies and paleogeography of Yanliao basin in northern North China Craton 1.4 billion years ago.