Abstract:The "red-black" coupling sedimentary architecture is one of the most important ore-control features of sandstone-type uranium deposits in the Middle and Cenozoic basins of the Northern China (referred to as the Northern Basins), which has been widely validated and applied in exploratory strategies. Simultaneously, more than 300 prospecting targets and orefields have been detected, and the the metallogenic theories have made considerable progress. The findings from more than 600,000 meters of boreholes in the Northern Basins are methodically summarized in this publication. Additionally, a comparative analysis of the sedimentology and geochemistry of typical deposits serves as the basis for a thorough assessment of the depositional conditions and material compositions of the Cenozoic, Cretaceous, and Jurassic reservoirs in the Northern Basins. This gave additional insight into the actual reservoir conditions that control metallogenic fluid flow and uranium mineral precipitation. The findings demonstrate the Northern Basin has developed seven sets of red beds since the Jurassic: (1) I. the Middle Jurassic-Early Late Jurassic (Bathonian-Oxfordian) red beds, II. Early Cretaceous (Valanginian) red beds, III. Late Early Cretaceous (Aptian) red beds, IV. Early Late Cretaceous (Cenomanian) red beds, V. Late Late Cretaceous-Early Palaeocene (Campanian-Thanetian) red beds, VI. Early Cenozoic (Aquitanian-Burdigalian) red beds, VII. Late Cenozoic, (Zanclean-Piacenzian) red beds. The red beds, along with the underlying black organic-rich strata, built upon the reservoir foundations for large-scale uranium mineralization in Northern Basins. (2) Geochemical indicators show that the Fe2+/Fe3+ ratio in the red strata range from 0.29 to 1.47, with an average value of 0.79 and a median of 0.75 (n=78), the Fe2+/Fe3+ ratio in the black strata range from 0.57 to 53.96, with an average value of 4.29 and a median of 2.82 (n=223), and the Fe2+/Fe3+ ratio in the orebodies range from 1.00 to 26.45, with a average value of 7.01 and a median of 4.62 (n=52). The growth of pyrite, carbon debris, and oil spots, which indicate the reduced environments, are characteristics of the orebodies and black strata with Fe2+/Fe3+ ratios that are typically more than 1. The red strata's Fe2+/Fe3+ ratio is typically less than 1, and they are distinguished by the formation of calcareous nodules that presenting strong oxidising environment. (3) As to the carbon content, the red strata range from 0 to 0.16, with an average of 0.046 and a median of 0.041 (n=107), the orebodies range from 0.01 to 2.65, with an average of 0.32 and a median of 0.14 (n=137), and the black strata range from 0.01 to 2.66, with an average of 0.36 and a median of 0.18 (n=339). Additionally, the enrichment and precipitation of uranium are intimately tied to the orebodies' carbon content that slightly less than the black strata. (4) Red beds, black strata, and sandstone-type uranium ore reside together closely in space. The uranium ore bodies usually occurred at the transitional zones between the red beds and black strata. The oxygenated uranium-bearing fluids migrate through the red beds, progressively eating away at the black strata' reducing medium and causing mineralization to occur. This process continues deep into the basin's interior. The ore bodies are mostly tabular-like and occur in gray, grayish green sandstone, fine sandstone, and even in mudstone. Large-scale uranium concentration and mineralization are not appropriate for regions with excessive oxidation or reduction. Large-scale uranium mineralization in the Northern Basins requires paired deposition and cyclic filling of the red and black strata. In the Northern Basins, the superposition of "red and black" strata results in multi-layer mineralization. This has significant practical implications for the deployment of exploration efforts as well as for a thorough understanding of the metallogenic environment, regularity of ore formation, and metallogenic mechanism.