Barium isotopic fractionation in latosol developed from strongly weathered basalt
文献类型：期刊论文
| 作者 | Gong, Yingzeng4; Zeng, Zhen4; Zhou, Chen4; Nan, Xiaoyun4; Yu, Huimin4; Lu, Ying3; Li, Wangye4; Gou, Wenxian2; Cheng, Wenhan1,4; Huang, Fang4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2019-10-15 |
| 卷号 | 687页码:1295-1304 |
| 关键词 | Barium isotopes Basalt weathering Latosol |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2019.05.427 |
| 通讯作者 | Huang, Fang(fhuang@ustc.edu.cn) |
| 英文摘要 | Weathering is a key process in the transfer of material from continents to the hydrosphere. A latosol profile in Zhanjiang, Guangdong Province, South China, formed through intense weathering of basalt, was studied to improve understanding of Ba isotopic fractionation during basalt weathering. Profile horizons were grouped into Ba-depleted and Ba-enriched layers (D- and E-layers, respectively) according to the mass fraction of Ba lost or gained from the weathered profile relative to bedrock. delta Ba-137/134 values in the soil profile ranged from -0.22% to +0.02%, lower than those of the parent basaltic rock (0.03% +/- 0.03%). In the D-layers, Ba isotopic fractionation can be explained by Rayleigh fractionation, implying that heavy Ba isotopes are preferentially leached. The Rayleigh fractionation model is not applicable to the E-layers because they preferentially acquired isotopically light Ba isotopes during weathering. Results indicate a net loss of heavy Ba isotopes during strong weathering of basalt due to the precipitation of Fe-Mn (oxyhydr) oxides and adsorption on secondary minerals. A mass-balance model indicates that the average delta Ba-137/134 value of materials leached from the weathered profile is similar to 0.08%, slightly higher than that of the bedrock. This suggests a loss of heavy Ba isotopes into the hydrosphere during weathering of basalt, consistent with the enrichment of heavy Ba isotopes in river waters. (C) 2019 Elsevier B.V. All rights reserved. |
| WOS关键词 | HAINAN ISLAND ; STABLE-ISOTOPES ; BA ; PRECIPITATION ; CYCLE ; GEOCHEMISTRY ; MOBILIZATION ; WITHERITE ; ARAGONITE ; STRONTIUM |
| 资助项目 | National Natural Science Foundation of China[41571130052] ; National Natural Science Foundation of China[41630206] ; State Key Laboratory of Loess and Quaternary Geology[SKLLQG1730] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000480316300124 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; State Key Laboratory of Loess and Quaternary Geology |
| 源URL | [http://ir.ieecas.cn/handle/361006/13613]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 通讯作者 | Huang, Fang |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, Slate Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China 2.Nanjing Univ, Sch Earth Sci & Engn, Minist Educ, Key Lab Surficial Geochem, Nanjing 210023, Jiangsu, Peoples R China 3.South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Guangdong, Peoples R China 4.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Yingzeng,Zeng, Zhen,Zhou, Chen,et al. Barium isotopic fractionation in latosol developed from strongly weathered basalt[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,687:1295-1304. |
| APA | Gong, Yingzeng.,Zeng, Zhen.,Zhou, Chen.,Nan, Xiaoyun.,Yu, Huimin.,...&Huang, Fang.(2019).Barium isotopic fractionation in latosol developed from strongly weathered basalt.SCIENCE OF THE TOTAL ENVIRONMENT,687,1295-1304. |
| MLA | Gong, Yingzeng,et al."Barium isotopic fractionation in latosol developed from strongly weathered basalt".SCIENCE OF THE TOTAL ENVIRONMENT 687(2019):1295-1304. |
入库方式： OAI收割
来源：地球环境研究所
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