Magnetic mineral diagenesis in sediments of saline lake Lop Nur
文献类型：期刊论文
| 作者 | Li Wen; Mu Gui-jin; Lin Yong-chong; Song Hao-ze |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2019 |
| 卷号 | 16期号:3页码:548-560 |
| 关键词 | Early diagenesis Magnetic properties Saline lake Lop Nur |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-018-5073-4 |
| 文献子类 | Article |
| 英文摘要 | Saline lakes are useful repositories for paleo-climatic records. In recent years, magnetic properties of saline lake sediments have been widely applied to establish paleo-climatic change. However, the influence factors of magnetic properties in saline lakes have not been fully understood, which complicates the paleoenvironmental interpretation. Here, we present a rock magnetic analyses result of LOP1 profile (40 degrees 2609N, 90 degrees 2123E) from Lop Nur, a well-known saline lake, located in the eastern Tarim Basin in northwestern China. We combined the particle size, total organic content, and mineral characteristics analysis to assess the influence factors of magnetic properties in Lop Nur and its environmental significance. The results indicate that early diagenesis is the major influence factor on magnetic properties of Lop Nur saline sediments. Authigenic greigite and pyrite are identified within organic-rich sediments, which produce zones with high and low magnetic susceptibilities, respectively. The different authigenic iron sulfide contents in different layers are related to sedimentary environment changes. Sufficient supplies of organic matter and sulphate and low sedimentation rates favour the pyritization process. Moreover, if pyritization was constrained, intermediate greigite formed and was preserved. In oxidizing environments, sediment magnetic properties are consistent with those of source materials from Tarim Basin and are mainly controlled by particle size and hydrodynamic sorting of mainly detrital magnetite is largely unaffected by early diagenesis. Our study demonstrates that magnetic properties can provide a robust approach for studying depositional environment change in saline lake. In addition, the information obtained in this study would also provide insights into the geochemical processes of iron element in saline lakes. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000460754100006 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46451]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.3 |
| 推荐引用方式 GB/T 7714 | Li Wen,Mu Gui-jin,Lin Yong-chong,et al. Magnetic mineral diagenesis in sediments of saline lake Lop Nur[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(3):548-560. |
| APA | Li Wen,Mu Gui-jin,Lin Yong-chong,&Song Hao-ze.(2019).Magnetic mineral diagenesis in sediments of saline lake Lop Nur.JOURNAL OF MOUNTAIN SCIENCE,16(3),548-560. |
| MLA | Li Wen,et al."Magnetic mineral diagenesis in sediments of saline lake Lop Nur".JOURNAL OF MOUNTAIN SCIENCE 16.3(2019):548-560. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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