Relationship between geochemical characteristics of Yaojia Formation and uranium mineralization in Qianjiadian Area, Kailu Depression

Songliao Basin is a large Mesozoic-Cenozoic energy basin in Northeast China. The study area is located in the transition zone between Kailu Depression and Southwest Uplift in the southwestern part of the basin. By analyzing and sorting out geochemical elements and trace uranium samples, it is found that contents of C_organic, C0₂, S_all and Fe²⁺ elements in the strata of Yaojia Formation increase gradually from oxidation zone, reduction zone to oxidation-reduction zone, while the content of Fe³⁺ is the opposite. On the plane, the contents of Fe²⁺, C_organiC, C0₂ and S_all increase from the provenance to the denudation window areas, whereas the content of Fe³⁺ is the opposite. According to the known characteristics of uranium mineralization, it is known that uranium element has obvious linear relationship with elements such as Fe²⁺, C_organic, C0₂, S_all and Fe³⁺. The correlation between geochemical elements and uranium elements is summarized to provide prospecting direction for uranium ore prospecting in the future. (authors)