Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/grl.50217 |
Hafnium isotope fractionation during continental weathering: Implications for the generation of the seawater Nd-Hf isotope relationships | |
Chen, Tian-Yu1; Li, Gaojun2; Frank, Martin1; Ling, Hong-Fei3 | |
通讯作者 | Chen, Tian-Yu |
来源期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
出版年 | 2013 |
卷号 | 40期号:5页码:916-920 |
英文摘要 | To investigate the mechanisms of the offset of seawater radiogenic Nd-Hf isotope compositions from those of the upper continental crust rocks, combined Nd-Hf isotope compositions of desert and loess samples from northern China (which integrate a wide range of lithologies and ages of continental rocks) are presented in this study. The results show significant and systematic fractionation of Hf isotopes between fine-grained detritals/leachates (<5 mu m) and coarser fractions (<75 mu m) of the same samples. A small but systematic difference of Nd isotope compositions between leachates and detrital silicates is also revealed. Overall, the leaching data either plot along or slightly above the Nd-Hf seawater array, providing strong direct support that the seawater Nd-Hf isotope relationship is predominantly generated by weathering of upper continental crust. Our study supports the application of dissolved Hf isotopes as a proxy for different modes of weathering regimes rather than for continental source provenances. |
英文关键词 | Hf isotopes weathering seawater array |
类型 | Article |
语种 | 英语 |
国家 | Germany ; Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000318242900021 |
WOS关键词 | NEODYMIUM ISOTOPES ; MARINE-SEDIMENTS ; ASIAN DUST ; FERROMANGANESE NODULES ; PACIFIC-OCEAN ; CRUSTS ; CONSTRAINTS ; RATIOS ; SYSTEM ; MANTLE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
来源机构 | 南京大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/177401 |
作者单位 | 1.GEOMAR Helmholtz Ctr Ocean Res Kiel, D-24148 Kiel, Germany; 2.Nanjing Univ, Dept Earth Sci, MOE Key Lab Surficial Geochem, Nanjing 210008, Jiangsu, Peoples R China; 3.Nanjing Univ, Dept Earth Sci, State Key Lab Mineral Deposits Res, Nanjing 210008, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Tian-Yu,Li, Gaojun,Frank, Martin,et al. Hafnium isotope fractionation during continental weathering: Implications for the generation of the seawater Nd-Hf isotope relationships[J]. 南京大学,2013,40(5):916-920. |
APA | Chen, Tian-Yu,Li, Gaojun,Frank, Martin,&Ling, Hong-Fei.(2013).Hafnium isotope fractionation during continental weathering: Implications for the generation of the seawater Nd-Hf isotope relationships.GEOPHYSICAL RESEARCH LETTERS,40(5),916-920. |
MLA | Chen, Tian-Yu,et al."Hafnium isotope fractionation during continental weathering: Implications for the generation of the seawater Nd-Hf isotope relationships".GEOPHYSICAL RESEARCH LETTERS 40.5(2013):916-920. |
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