Damped fluctuations in Chinese loess grain size
文献类型：期刊论文
| 作者 | Xiong, SF; Ding, ZL; Jiang, WY; Yang, SL; Liu, TS |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2003-10-11 |
| 卷号 | 30期号:19 |
| 关键词 | loess-paleosol grain size east Asian winter monsoon uplift of the Tibetan Plateau |
| ISSN号 | 0094-8276 |
| DOI | 10.1029/2003GL018187 |
| 文献子类 | Article |
| 英文摘要 | The sediment record of the loess-paleosol sequence in the Chinese Loess Plateau reveals a strong relationship between grain size fluctuations and glacial-interglacial cycles documented by marine oxygen isotope variations. However, on tectonic time scales, differences between the loess-paleosol grain size record and the marine oxygen isotope record can be identified. Analytical results from the Baishui, Jingchuan and Lingtai sections show that the grain size of eolian loess, superimposed on a coarsening trend, has two abrupt shifts at about 2.55 and 1.25 Ma, which are followed by significantly damped fluctuations in grain size. This is different from the global oxygen isotope record which demonstrates higher amplitude variations since the late Pliocene-early Pleistocene and lacks analogs of the abrupt shifts. We propose that the progressive uplift of the Tibetan plateau may have forced the regional environmental system across two thresholds at the late Pliocene-early Pleistocene and the middle Pleistocene, respectively, inducing two pulses of climatic and environmental changes over north-western China which are superimposed on the global cooling trend and orbital climate changes. |
| WOS关键词 | RED CLAY DEPOSIT ; DEEP-SEA ; PLATEAU ; CLIMATE ; RECORD ; CIRCULATION ; SEQUENCES ; MONSOON ; LINGTAI ; SHIFTS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000185926900004 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/78333]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xiong, SF |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiong, SF,Ding, ZL,Jiang, WY,et al. Damped fluctuations in Chinese loess grain size[J]. GEOPHYSICAL RESEARCH LETTERS,2003,30(19). |
| APA | Xiong, SF,Ding, ZL,Jiang, WY,Yang, SL,&Liu, TS.(2003).Damped fluctuations in Chinese loess grain size.GEOPHYSICAL RESEARCH LETTERS,30(19). |
| MLA | Xiong, SF,et al."Damped fluctuations in Chinese loess grain size".GEOPHYSICAL RESEARCH LETTERS 30.19(2003). |
入库方式： OAI收割
来源：地质与地球物理研究所
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