Geochemical characteristics of elements in sedimentary environment and its geological significance
DOI:
https://doi.org/10.63313/CESS.4008Keywords:
Major elements, Trace elements, Rare earth elements, Geochemical characteristics, Sedimentary environment, Geological significanceAbstract
Elements, especially inorganic elements, are geochemical tracers widely used to study the evolution of various geological processes, material sources and environmental changes, especially in the fields of ocean, environment, mineral deposits and so on. The geochemical characteristics of elements in the sedimentary environment are of great significance for tracing the provenance of sediments. The content of elements changes with the change of rock type, sedimentary process and sedimentary environment. Some elements with relatively stable chemical properties are basically not affected by the weathering, denudation, redeposition and diagenesis of rocks, and can well reflect the provenance characteristics of source rocks. Other elements have different characteristics in different sedimentary environments. Some elements are enriched in marine sediments, while others are enriched in terrigenous sediments, and are affected by sedimentary fluid environment in this process. For example, the enrichment degree of some metal elements will also change in different oxidation-reduction environments. With the process of sedimentary evolution, trace elements will also be dispersed and enriched during the formation, sedimentation and burial of sedimentary organic matter. Therefore, the analysis of the geochemical characteristics of elements in the sedimentary environment is of great significance for identifying the provenance and tectonic setting of sediments.
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