Evaluating the paleoclimatic significance of clay mineral records from a late Pleistocene loess-paleosol section of the Ili Basin, Central Asia
文献类型：期刊论文
| 作者 | Song, Yougui1,4; Li, Yue3,4; Zeng, Mengxiu2; Lin, Weiwei4; Orozbaev, Rustam1,5; Cheng, Liangqing3,4; Chen, Xinli6; Halmurat, Tiliwaldi6 |
| 刊名 | QUATERNARY RESEARCH
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 89期号:3页码:660-673 |
| 关键词 | Ili Loess Clay Mineral Genesis Paleoclimate |
| DOI | 10.1017/qua.2017.58 |
| 文献子类 | Article |
| 英文摘要 | In this study, we present clay mineral records from a late Pleistocene loess-paleosol sequence in the Ili Basin, Central Asia, and assess their significance for paleoclimatic reconstruction. The results show that the clay minerals are mainly illite (average 60%) and chlorite (28%), with minor kaolinite (9%) and smectite (3%). Illite was of detrital origin with no obvious modification to its crystal structure. Increases in illite content in the loess are ascribed to wind intensity rather than pedogenesis. High proportions of illite in the clay fraction, and of muscovite in the bulk samples of the paleosol units, may lead to an overestimation of the weathering intensity. Kaolinite was likely inherited from the sedimentary rocks, while chlorite might have been inherited from both sedimentary and metamorphic rocks. The paleoclimatic signals of kaolinite and chlorite were unclear, due to reworking by both fluvial and eolian systems. Smectite was more likely formed by the transformation of biotite and illite, and its variation in the loess sequence was also controlled by wind intensity; this was largely due to aggregation and is unlikely to reflect moisture changes. Although the interpretation of paleoclimate evolution may contain some uncertainties, clay mineralogy does provide the possibility of tracing dust provenance. |
| WOS关键词 | GREENLAND ICE CORE ; LATE QUATERNARY LOESS ; GRAIN-SIZE ; ENVIRONMENTAL SIGNIFICANCE ; TIANSHAN MOUNTAINS ; MONSOON EVOLUTION ; TIBETAN PLATEAU ; CLIMATIC-CHANGE ; NORTHERN CHINA ; MCMURDO SOUND |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000432179700005 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5143]  |
| 专题 | 地球环境研究所_古环境研究室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, Urumqi 830011, Peoples R China 2.Nanjing Univ, Coll Geog & Oceanog Sci, Nanjing 210023, Jiangsu, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, 97 Yanxiang Rd, Xian 710061, Shaanxi, Peoples R China 5.Natl Acad Sci, Inst Geol, Bishkek 720040, Kyrgyzstan 6.Environm Monitoring Stn Ili Kazakh Autonomo Prefe, Yining 835000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Yougui,Li, Yue,Zeng, Mengxiu,et al. Evaluating the paleoclimatic significance of clay mineral records from a late Pleistocene loess-paleosol section of the Ili Basin, Central Asia[J]. QUATERNARY RESEARCH,2018,89(3):660-673. |
| APA | Song, Yougui.,Li, Yue.,Zeng, Mengxiu.,Lin, Weiwei.,Orozbaev, Rustam.,...&Halmurat, Tiliwaldi.(2018).Evaluating the paleoclimatic significance of clay mineral records from a late Pleistocene loess-paleosol section of the Ili Basin, Central Asia.QUATERNARY RESEARCH,89(3),660-673. |
| MLA | Song, Yougui,et al."Evaluating the paleoclimatic significance of clay mineral records from a late Pleistocene loess-paleosol section of the Ili Basin, Central Asia".QUATERNARY RESEARCH 89.3(2018):660-673. |
入库方式： OAI收割
来源：地球环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。