Application of Uranium Isotope Chronology for Partical Comminution in the Eolian Dust System |
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| Authors: | Yuanhe Fu Le Li Jun Chen |
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| Institution: | Ministry of Education Key Laboratory of Surficial Geochemistry, School of Earth Sciences and Engineering,Nanjing University, Nanjing 210023, China |
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| Abstract: | The wind dust system is an important part of the terrestrial surface system and plays an important role in many key belts. The mechanism of wind dust and the handling process are important to understand the environmental function of wind dust and to interpret the paleoclimate record. In the past, traditional geochemical methods can only reflect the rock composition or age in the final denudation zone, and it is not possible to distinguish the different silt mechanism and the intermediate process under the same eventual source background, which is one of the biggest challenges of the present research. The 234U/238U ratio of fine matter caused by alpha decay recoil reflects the time experienced by the particle since it was broken and may be able to effectively trace the mechanism of wind dust generation and the transport of the intermediate process, but the age of uranium isotope fragmentation is rarely used in the wind dust system. The complicated factors restricting the wide application of uranium isotope were summarized, and according to the latest research progress, the verification and development of the uranium isotope comminution age in the wind dust system, and the problem solution of the mechanism of wind dust production and the way of transporting were discussed. |
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| Keywords: | Uranium isotope Comminution age Transportation process α-recoil Loess |
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