| An Integrated Study of the Eolian Dust in Pelagic Sediments From the North Pacific Ocean Based on Environmental Magnetism, Transmission Electron Microscopy, and Diffuse Reflectance Spectroscopy | |
| Zhang, Qiang1,2; Liu, Qingsong3,4; Li, Jinhua2,4; Sun, Youbin5 | |
| 2018-05-01 | |
| 发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 卷号 | 123期号:5页码:3358-3376 |
| 文章类型 | Article |
| 摘要 | Eolian dust is a major terrigenous component in North Pacific Ocean pelagic sediments and is an important recorder of Asian terrestrial environmental evolution and Northern Hemisphere atmospheric circulation. In order to extract and quantify wind-borne mineral signals and develop a reliable eolian dust proxy for pelagic sediments, we investigated sediments from Ocean Drilling Program Hole 885A, North Pacific Ocean, by integrating results from environmental magnetism, transmission electron microscopy, and diffuse reflectance spectroscopy (DRS). Our results indicate that ferrimagnetic and antiferromagnetic minerals coexist in the sediments. The former includes biogenic magnetite, nano-sized single domain (titano) magnetite inclusions embedded in silicate hosts, submicron vortex state magnetite, and ultrafine superparamagnetic maghemite. The latter includes hematite and goethite. Our results indicate that magnetic properties can be used to determine an overall trend of increased eolian dust inputs, with additional significant influence from biogenic and volcanogenic components. In contrast, a newly proposed parameter Rel(Hm+Gt) (combined hematite and goethite concentration) obtained from DRS measurements extracts precisely the eolian signal and precludes other components. Our DRS results indicate that hematite/goethite and siliceous fractions deposited at Hole 885A were jointly delivered to the North Pacific Ocean from Asian dust sources. Therefore, we suggest that Rel(Hm+Gt) is a reliable eolian dust proxy for pelagic sediments in this region. |
| 关键词 | Environmental Magnetism Marine Sediments Eolian Dust Diffuse Reflectance Spectroscopy |
| WOS标题词 | Science & Technology ; Physical Sciences |
| DOI | 10.1002/2017JB014951 |
| 关键词[WOS] | ISOTHERMAL REMANENT MAGNETIZATION ; LOW-TEMPERATURE OXIDATION ; CHINESE LOESS PLATEAU ; REVERSAL CURVE DIAGRAMS ; EASTERN ALEUTIAN ARC ; ACQUISITION CURVES ; MARINE-SEDIMENTS ; SOURCE REGIONS ; IRON-OXIDES ; DEEP-SEA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| WOS记录号 | WOS:000435944700006 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5095 |
| 专题 | 古环境研究室 |
| 通讯作者 | Liu, Qingsong |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 3.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China 5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Qiang,Liu, Qingsong,Li, Jinhua,et al. An Integrated Study of the Eolian Dust in Pelagic Sediments From the North Pacific Ocean Based on Environmental Magnetism, Transmission Electron Microscopy, and Diffuse Reflectance Spectroscopy[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2018,123(5):3358-3376. |
| APA | Zhang, Qiang,Liu, Qingsong,Li, Jinhua,&Sun, Youbin.(2018).An Integrated Study of the Eolian Dust in Pelagic Sediments From the North Pacific Ocean Based on Environmental Magnetism, Transmission Electron Microscopy, and Diffuse Reflectance Spectroscopy.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,123(5),3358-3376. |
| MLA | Zhang, Qiang,et al."An Integrated Study of the Eolian Dust in Pelagic Sediments From the North Pacific Ocean Based on Environmental Magnetism, Transmission Electron Microscopy, and Diffuse Reflectance Spectroscopy".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 123.5(2018):3358-3376. |
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| An Integrated Study （3202KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 | |
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