Geochemical Composition of Surface Sediments in the Bashang Area, North China and its Environmental Significance
The geochemical characteristics of sediments are important for reconstructing paleoclimatic and paleoenvironmental conditions in the Asian summer monsoon marginal area. However, robust reconstructions require an understanding of the key factors and mechanisms governing the spatial variations in the...
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Frontiers Media S.A.
2022-05-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.891032/full |
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| author | Linjing Liu Linjing Liu Gaolei Jiang Gaolei Jiang Xin Mao Xin Mao Hongmei Zhao Hongmei Zhao Yongjie Zhao Yuecong Li Hua Zhao Hua Zhao Zhiwei Bi Zhiwei Bi |
| author_facet | Linjing Liu Linjing Liu Gaolei Jiang Gaolei Jiang Xin Mao Xin Mao Hongmei Zhao Hongmei Zhao Yongjie Zhao Yuecong Li Hua Zhao Hua Zhao Zhiwei Bi Zhiwei Bi |
| author_sort | Linjing Liu |
| collection | DOAJ |
| description | The geochemical characteristics of sediments are important for reconstructing paleoclimatic and paleoenvironmental conditions in the Asian summer monsoon marginal area. However, robust reconstructions require an understanding of the key factors and mechanisms governing the spatial variations in the composition and ratio of chemical elements in the modern sediments of the Asian summer monsoon marginal area. In this study, 128 surface sediment samples were collected from the Bashang area, which is situated in the Asian summer monsoon marginal area, and examined for their major and trace element compositions and grain size. Principal component analysis (PCA) and redundancy analysis (RDA) were used to analyse the relationship between geochemical data and modern temperature and precipitation data. The results showed that the CIA values of sediments in the Bashang area are mainly affected by temperature rather than precipitation and the Rb/Sr value in the study area reflects the level of precipitation in the corresponding period and the temperature controlling the leaching and weathering. In addition, SiO2/Al2O3 and Zr/Ti ratios have good positive relationships with the coarse-grained fraction of sediments and thus can be used as grain size proxies. We propose that the exact environmental significance indicated by these proxies should be stated explicitly before using them as proxies for paleoenvironmental reconstructions of the Asian summer monsoon marginal area. |
| first_indexed | 2024-12-12T16:31:25Z |
| format | Article |
| id | doaj.art-1b5ee37a627644d493ba8df654d1aca0 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-12-12T16:31:25Z |
| publishDate | 2022-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-1b5ee37a627644d493ba8df654d1aca02022-12-22T00:18:46ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632022-05-011010.3389/feart.2022.891032891032Geochemical Composition of Surface Sediments in the Bashang Area, North China and its Environmental SignificanceLinjing Liu0Linjing Liu1Gaolei Jiang2Gaolei Jiang3Xin Mao4Xin Mao5Hongmei Zhao6Hongmei Zhao7Yongjie Zhao8Yuecong Li9Hua Zhao10Hua Zhao11Zhiwei Bi12Zhiwei Bi13Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, ChinaKey Laboratory of Quaternary Chronology and Hydrological Environment Evolution, China Geological Survey, Shijiazhuang, ChinaInstitute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, ChinaKey Laboratory of Quaternary Chronology and Hydrological Environment Evolution, China Geological Survey, Shijiazhuang, ChinaInstitute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, ChinaKey Laboratory of Quaternary Chronology and Hydrological Environment Evolution, China Geological Survey, Shijiazhuang, ChinaInstitute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, ChinaKey Laboratory of Quaternary Chronology and Hydrological Environment Evolution, China Geological Survey, Shijiazhuang, ChinaCollege of Geographical Sciences, Hebei Normal University, Shijiazhuang, ChinaCollege of Geographical Sciences, Hebei Normal University, Shijiazhuang, ChinaInstitute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, ChinaKey Laboratory of Quaternary Chronology and Hydrological Environment Evolution, China Geological Survey, Shijiazhuang, ChinaInstitute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, ChinaKey Laboratory of Quaternary Chronology and Hydrological Environment Evolution, China Geological Survey, Shijiazhuang, ChinaThe geochemical characteristics of sediments are important for reconstructing paleoclimatic and paleoenvironmental conditions in the Asian summer monsoon marginal area. However, robust reconstructions require an understanding of the key factors and mechanisms governing the spatial variations in the composition and ratio of chemical elements in the modern sediments of the Asian summer monsoon marginal area. In this study, 128 surface sediment samples were collected from the Bashang area, which is situated in the Asian summer monsoon marginal area, and examined for their major and trace element compositions and grain size. Principal component analysis (PCA) and redundancy analysis (RDA) were used to analyse the relationship between geochemical data and modern temperature and precipitation data. The results showed that the CIA values of sediments in the Bashang area are mainly affected by temperature rather than precipitation and the Rb/Sr value in the study area reflects the level of precipitation in the corresponding period and the temperature controlling the leaching and weathering. In addition, SiO2/Al2O3 and Zr/Ti ratios have good positive relationships with the coarse-grained fraction of sediments and thus can be used as grain size proxies. We propose that the exact environmental significance indicated by these proxies should be stated explicitly before using them as proxies for paleoenvironmental reconstructions of the Asian summer monsoon marginal area.https://www.frontiersin.org/articles/10.3389/feart.2022.891032/fullgeochemistrychemical index of alteration (CIA)rb/srSiO2/Al2O3bashang areaenvironmental significance |
| spellingShingle | Linjing Liu Linjing Liu Gaolei Jiang Gaolei Jiang Xin Mao Xin Mao Hongmei Zhao Hongmei Zhao Yongjie Zhao Yuecong Li Hua Zhao Hua Zhao Zhiwei Bi Zhiwei Bi Geochemical Composition of Surface Sediments in the Bashang Area, North China and its Environmental Significance Frontiers in Earth Science geochemistry chemical index of alteration (CIA) rb/sr SiO2/Al2O3 bashang area environmental significance |
| title | Geochemical Composition of Surface Sediments in the Bashang Area, North China and its Environmental Significance |
| title_full | Geochemical Composition of Surface Sediments in the Bashang Area, North China and its Environmental Significance |
| title_fullStr | Geochemical Composition of Surface Sediments in the Bashang Area, North China and its Environmental Significance |
| title_full_unstemmed | Geochemical Composition of Surface Sediments in the Bashang Area, North China and its Environmental Significance |
| title_short | Geochemical Composition of Surface Sediments in the Bashang Area, North China and its Environmental Significance |
| title_sort | geochemical composition of surface sediments in the bashang area north china and its environmental significance |
| topic | geochemistry chemical index of alteration (CIA) rb/sr SiO2/Al2O3 bashang area environmental significance |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.891032/full |
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