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[1]GAO Wenting,WANG Bin,PENG Jun,et al.Spatial Bistribution of Granularity Parameter and Provenance Indication of Aeolian Deposits on the Southern Margin of the Tengger Desert[J].Research of Soil and Water Conservation,2022,29(06):129-137.

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Spatial Bistribution of Granularity Parameter and Provenance Indication of Aeolian Deposits on the Southern Margin of the Tengger Desert

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 06 Page number: 129-137 Column: Public date: 2022-10-20

Title:: Spatial Bistribution of Granularity Parameter and Provenance Indication of Aeolian Deposits on the Southern Margin of the Tengger Desert

Author(s):: GAO Wenting¹, WANG Bin¹, PENG Jun², LIANG Aimin¹; (1.School of Geography and Tourism, Shaanxi Normal University School, Xi'an 710062, China; 2.College of Resources, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411103, China)

Keywords:: provenance; grain size; end member analysis; Southern margin of the Tengger Desert

CLC:: P931.3

DOI:: -

Abstract:: In order to explore the aeolian material source in the southern margin of the Tengger Desert, the spatial distribution of aeolian material was analysed based on the particle size parameters. The particle size and element analysis was used and compared with the potential source area, the constant element method was used to explore from multiple angles. The results show that: The grain size of sediment on the North of the Yellow River is coarser than that of the South, and there are obvious spatial differences between the two banks. The spatial distribution difference of grain size, combined with sandstorm activities and topographic characteristics indicates that the North of the Yellow River in the southern edge of Tengger desert is one of the upwind source areas of the sediment on the South of the Tengger Desert. The geochemical element analysis shows that the characteristics of major elements in the south of the Yellow River are similar to those in the Qilian mountainous area, and are quite different from those in the desert hinterland. Therefore, it can be considered that the Qilian mountainous area may be one of the provenances south of the Yellow River; four end-members are extracted, and the multi angle analysis shows that end-member 1 is composed of Aeolian sand at the northern foot of the Qilian Mountain, and end-member 2 is mainly composed of Aeolian sand along the North Bank of the Yellow River and the secondary transport of the Yellow River. End-element 3 is composed of sediments transported by the Yellow River. It can be considered that the Yellow River, its banks and the Qilian mountains provide provenance for the southern edge of Tengger Desert. It is of great significance to extract the provenance information of desert sediment from grain size data. However, in order to accurately determine the source of desert sediment, it is still necessary to make comprehensive analysis from other means such as geochemical elements.

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Last Update: 2022-10-20