End-member modeling analysis and test of grain-size distribution:A case from the late Quaternary sediments of Borehole DK-12 in the western Jilantai-Hetao Basin
Mou Xue-Song1, Ma Jun1, Wang Yong-Da1, Fan Yu-Xin1, 2
1 Key Laboratory of Mineral Resources in Western China(Gansu Province),School of Earth Sciences,Lanzhou University,Lanzhou 730000,Gansu; 2 Key Laboratory of Western China’s Environmental Systems(Ministry of Education),Lanzhou University,Lanzhou 730000,Gansu;
Abstract End-member modeling analysis is beneficial to extract the end-members with different transporting dynamics from sediments characterized by complex multimodal distribution. However,because the grain-size distribution of sediments is affected by many factors besides depositional environment,the effectiveness of this method and the geological significance of each end-member need to be tested. In this paper,the BEMMA algorithm is used to analyze grain size data of samples from the Borehole DK-12 obtained in the Dengkou sub-uplift at the western Jilantai-Hetao Basin. Four end-members are recognized including remote dust(EM 1),aeolian sand(EM 2),and fluvial sand(EM 3 and EM 4).
Fund:Co-funded by the National Natural Science Foundation of China(Nos.41772169,41371033) and the Strategic Priority Research Program of Chinese Academy of Sciences(No. XDA2009000001)
Corresponding Authors:
Fan Yu-Xin,born in 1975,is a professor at School of Earth Sciences,Lanzhou University. Now he is engaged in researches on evolution mechanism of lake-desert environment and chronology in the arid regions. E-mail: yxfan@lzu.edu.cn.
Cite this article:
Mou Xue-Song,Ma Jun,Wang Yong-Da et al. End-member modeling analysis and test of grain-size distribution:A case from the late Quaternary sediments of Borehole DK-12 in the western Jilantai-Hetao Basin[J]. JOPC, 2018, 20(3): 489-500.
Mou Xue-Song,Ma Jun,Wang Yong-Da et al. End-member modeling analysis and test of grain-size distribution:A case from the late Quaternary sediments of Borehole DK-12 in the western Jilantai-Hetao Basin[J]. JOPC, 2018, 20(3): 489-500.
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