Sr, Nd and Pb stable isotopes of surface dust on Urumqi glacier No. 1 in western China
文献类型：期刊论文
| 作者 | Nagatsuka, Naoko1; Takeuchi, Nozomu1; Nakano, Takanori2; Kokad, Emi2; Li, Zhongqin3 |
| 刊名 | ANNALS OF GLACIOLOGY
 |
| 出版日期 | 2010 |
| 卷号 | 51期号:56页码:95-105 |
| ISSN号 | 0260-3055 |
| 通讯作者 | Nagatsuka, Naoko(n-nao@graduate.chiba-u.jp) |
| 英文摘要 | Stable-isotopic ratios of strontium (Sr), neodymium (Nd) and lead (Pb) provide a means of identifying a geological source of substances and are used as tracers of elements in biological and geochemical processes. We analyzed these isotopic ratios of surface dust (cryoconite) collected on Urumqi glacier No. 1, Tien Shan, China. The dust was separated chemically into five fractions (four minerals and organic matter), and the isotopic ratios of each fraction were measured. The Sr and Nd isotopic ratios in the fractions extracted with ultrapure water (saline minerals), hydrogen peroxide solution (organic matter) and acetic acid (carbonate minerals) were low and invariable, whereas those extracted by hydrochloric acid (phosphate minerals) and the residual fraction (silicate minerals) were higher. The difference was likely due to the original source of each fraction. The isotopic ratios of the surface dust collected from different sites showed no significant difference, suggesting that they were spatially uniform across the glacier. The isotopic ratios of the silicate fraction were closer to those of desert sand reported in China than those of the soil and bedrock around the glacier. This suggests that the silicate minerals on the glacier were derived from distant deserts. The isotopic ratios in saline, carbonate and phosphate fractions were also close to those of evaporites and apatite in that desert region, suggesting that these minerals were also derived from that source. The Sr isotopic ratios in the organic fraction were closer to ratios in the saline and carbonate fractions rather than the silicate or phosphate fractions and may therefore reflect the isotopic ratios of the elements when they are incorporated into living microbes on the glacier. |
| 收录类别 | SCI |
| WOS关键词 | ASIAN DUST ; ICE-CORE ; SOIL MINERALS ; LOESS PLATEAU ; PROVENANCE ; MOUNTAINS ; LEAD ; CRYOCONITE ; DEPOSITION ; GREENLAND |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000290290600012 |
| 出版者 | INT GLACIOL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556441 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Nagatsuka, Naoko |
| 作者单位 | 1.Chiba Univ, Grad Sch Sci, Dept Earth Sci, Inage Ku, Chiba 2638522, Japan 2.Res Inst Humanity & Nat, Kyoto 6038047, Japan 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Tien Shan Glaciol Stn, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nagatsuka, Naoko,Takeuchi, Nozomu,Nakano, Takanori,et al. Sr, Nd and Pb stable isotopes of surface dust on Urumqi glacier No. 1 in western China[J]. ANNALS OF GLACIOLOGY,2010,51(56):95-105. |
| APA | Nagatsuka, Naoko,Takeuchi, Nozomu,Nakano, Takanori,Kokad, Emi,&Li, Zhongqin.(2010).Sr, Nd and Pb stable isotopes of surface dust on Urumqi glacier No. 1 in western China.ANNALS OF GLACIOLOGY,51(56),95-105. |
| MLA | Nagatsuka, Naoko,et al."Sr, Nd and Pb stable isotopes of surface dust on Urumqi glacier No. 1 in western China".ANNALS OF GLACIOLOGY 51.56(2010):95-105. |
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来源：寒区旱区环境与工程研究所
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