A Study on the Relationship between Debris Flow Deposit and Environmental Evolution in Quaternary

Abstract:

Based on field test,Typical debris flow profile in Quaternary was analyzed on the eastern edge of Qinghai-Tibet Plateau. According to relationship between debris flow deposition profile and geological age,debris flow deposition and neotectonics history,deep-sea oxygen isotope curve,loess-paleosol series were compared. Like other sediments, debris flow sedimentary body is constructed with action of neotectonics and climate.Debris flow deposits within the body surported by the absolute age date was a regular change in the vertical,which also reflected the environmental evolution. The relationship between environmental evolution and debris flow deposits was analyzed and the following conclusions were drawn: Fluctuations of debris flow deposits and intermittent uplift of neotectonics was basically a coincidence since the Quaternary in Xiaojiang River Basin whose debris flow deposits may correspond to climate of cold (cool) wet or warm (hot) wet.Fluctuations of debris flow deposits and climate cycles was basically a coincidence in Bailongjiang River Basin whose debris flow deposits only corresponds to the warm (hot) wet climate.

• Periodical: Applied Mechanics and Materials (Volumes 260-261)
• Pages: 1249-1256
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.260-261.1249
• Online since: December 2012
• Authors: Xue Zhan Liang
• Keywords: Bailongjiang River Basin, Debris Flow, Deposition, Environmental Evolution, Quaternary, Xiaojiang River Basin

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