Climate Change Data Portal
DOI | 10.3389/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 |
EISSN | 2296-6463 |
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). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。