Review on Identification and Significance of Red Beds:From Rock Surface Feature Fuzzy Distinction to Geological Gene Quantitative Determination
The red bed is one of the representative sedimentary formations in the lithosphere.Its wide distribution,great thickness,typical deposition,and intact landforms are rare.At the same time,it is also an important carrier of Chinese civilization and cultural inheritance.For a long time,the red bed has been one of the hot topics in the fields of geology,engineering,ecology,and materials.However,since the concept of red bed was proposed by British engineers in 1835 and Mr.Li Siguang in 1925,there has not been a unified understanding of red bed,and there is a lack of systematic summarization of red bed identification and its scientific significance,which restricts a comprehensive understanding of the red bed and makes it difficult to meet the needs of red bed scientific development.Therefore,in this paper it systematically reviews the main process of red bed identification in four stages,including the vague distinction of lithological characteristics,clear identification of geomorphic colors,qualitative identification of stratigraphic patterns,and quantitative determination of geological genes,summarizing the scientific significance of red bed identification at different stages.It discusses the trends and main directions of red bed identification,such as geological evolution correlation,object category expansion,and material property models.Finally,based on this foundation,the value and prospects of red bed identification are proposed.
red bedgeological genequantitative identificationcategory extensionscientific significancesedimentologystratigraphy
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