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Journal of Desert Research ›› 2025, Vol. 45 ›› Issue (6): 239-248.DOI: 10.7522/j.issn.1000-694X.2025.00148

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Geochemical elements composition of surface sediment and its implications around Badain Jaran Desert

Meng Wang1(), Junfeng Lu2(), Peng Fu1, Zhibao Dong3, Fang Wang2   

  1. 1.Xuchang University,Xuchang 461000,Henan,China
    2.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    3.Shaanxi Normal University,Xi'an 710062,China
  • Received:2025-09-03 Revised:2025-09-28 Online:2025-11-20 Published:2025-11-26
  • Contact: Junfeng Lu

Abstract:

The geochemical element characteristics of the sediments record rich regional environmental changes, which have important significance for material sources and sedimentary environment. In this paper, the geochemical element composition of surface sediments in the surrounding area of Badain Jaran Desert were analyzed to reveal the characteristics of sedimentary environment and chemical weathering degree. The results showed that SiO2 was the main major element, and Ba, Zr, Sr and Co were the main trace elements in the surface sediments of the Badain Jaran Desert. Compared with the average chemical element composition of the upper continental crust, the major elements SiO2 and trace elements Co, As and Ce in the study area were enriched, while other elements were locally enriched or completely depleted to varying degrees. The correlation of major element oxides showed that SiO2 affected the chemical composition and properties of sediments. The degree of chemical weathering of sediments in the surrounding areas of Badain Jaran Desert was generally low, and it was in the early stage of continental weathering. The influence factors of different chemical weathering indexes were different. The CIA index showed that there were significant differences in the degree of chemical weathering among regions. The provenance of the surrounding area of Badain Jaran Desert was similar, but it was also affected by the surrounding landform and local climate change during the long-term weathering process.

Key words: sediment, geochemical element, chemical weathering, Badain Jaran Desert

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