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DOI10.3389/feart.2021.725553
Geochemistry and Petrography of the Sediments From the Marginal Areas of Qinghai Lake, Northern Tibet Plateau, China: Implications for Weathering and Provenance
Tao, Huifei; Hao, Lewei; Li, Shutong; Wu, Tao; Qin, Zhen; Qiu, Junli
通讯作者Tao, HF ; Hao, LW (通讯作者),Chinese Acad Sci, Oland Gas Res Ctr, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China.
发表日期2021
EISSN2296-6463
卷号9
英文摘要The provenance study of the sediments from Qinghai Lake is of great significance for the understanding of geological and climatic evolution processes of the Tibet Plateau on the one hand and for evaluating the controlling factors of the sediment components on the other hand. The samples were collected from five rivers, foreshore, beach, beach bar, and aeolian sand dune in the Qinghai Lake. The bulk geochemical composition, petrography, and mineralogy features of the samples are analyzed. The results show that: 1) Qinghai Lake sediments experienced low-intensity chemical weathering from the source areas to the deposition sites and were affected by some recycled detrital materials and 2) the source rocks for the sediments include felsic rocks (granite, granodiorite, and felsic volcanic rocks), carbonate, metamorphic rocks (marble and meta-volcanic rocks), and clastic rocks with the felsic source rocks to have the most important impact on the chemical compositions of the sediments. The geochemical indicator of Al2O3/TiO2 reflects that the provenance of fine-grained sediments from the center of Qinghai Lake is more mafic than the coarse-grained sediments from the margin of the Qinghai Lake, suggesting that the hydraulic sorting of grain size probably plays an important role in the geochemical compositions of the sediments. The mafic elements were probably preferentially enriched in muds.

关键词GREENSTONE-BELTSHALESZIMBABWEELEMENTSRECORDROCKS
英文关键词Qinghai Lake; geochemical compositions; weathering; provenance; hydraulic sorting
语种英语
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000701362200001
来源期刊FRONTIERS IN EARTH SCIENCE
来源机构中国科学院西北生态环境资源研究院
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/254291
作者单位[Tao, Huifei; Hao, Lewei; Li, Shutong; Qin, Zhen; Qiu, Junli] Chinese Acad Sci, Oland Gas Res Ctr, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; [Wu, Tao] Petrochina Xinjiang Oilfield Co, Res Inst Explorat & Dev, Karamay, Peoples R China; [Qin, Zhen] Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Tao, Huifei,Hao, Lewei,Li, Shutong,et al. Geochemistry and Petrography of the Sediments From the Marginal Areas of Qinghai Lake, Northern Tibet Plateau, China: Implications for Weathering and Provenance[J]. 中国科学院西北生态环境资源研究院,2021,9.
APA Tao, Huifei,Hao, Lewei,Li, Shutong,Wu, Tao,Qin, Zhen,&Qiu, Junli.(2021).Geochemistry and Petrography of the Sediments From the Marginal Areas of Qinghai Lake, Northern Tibet Plateau, China: Implications for Weathering and Provenance.FRONTIERS IN EARTH SCIENCE,9.
MLA Tao, Huifei,et al."Geochemistry and Petrography of the Sediments From the Marginal Areas of Qinghai Lake, Northern Tibet Plateau, China: Implications for Weathering and Provenance".FRONTIERS IN EARTH SCIENCE 9(2021).
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