Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.palaeo.2013.06.006 |
A Rb/Sr record of the weathering response to environmental changes in westerly winds across the Tarim Basin in the late Miocene to the early Pleistocene | |
Chang, Hong; An, Zhisheng; Wu, Feng; Jin, Zhangdong; Liu, Weiguo; Song, Yougui | |
通讯作者 | Chang, Hong |
来源期刊 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
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ISSN | 0031-0182 |
EISSN | 1872-616X |
出版年 | 2013 |
卷号 | 386页码:364-373 |
英文摘要 | The long-term record of lacustrine deposits in the Tarim Basin seems to provide a record of climate influenced by westerly winds. To characterize the evolution of westerly winds, we analyzed concentrations of Rb, V, Zn, Sc and Sr for the drill core Ls2 from Lop Nor in the eastern Tarim Basin. The Rb/Sr ratio in lacustrine deposits depends primarily on the Sr element activity during weathering, after the influence of source provenance has been removed. We assume that with such a correction, the Rb/Sr ratio is controlled by precipitation, which depends on moisture transport by westerly winds to the Tarim Basin. The Rb/Sr ratio displays a large-amplitude oscillation that generally follows a pattern similar to that of pollen and ostracod assemblages, which support the inference that rainfall amount affects the Rb/Sr ratio, and in turn suggests that it may serve as an index of precipitation that was transported by westerly wind. All these climatic proxies obviously changed since the late Miocene, suggesting stronger aridification that may be attributed to a latitudinal shift in westerly winds since the late Miocene. A southward migration of westerly winds, which then transported more moisture to the southern and eastern parts of the Tibetan Plateau, agrees with modeling results and the geological record during that time. This event may be causally related to the expansion of the northern hemisphere ice and/or regional tectonic uplift of high mountains around the Tarim Basin. (C) 2013 Elsevier B.V. All rights reserved. |
英文关键词 | Rb/Sr ratio Weathering Environmental change The Tarim Basin Westerly wind The late Miocene to the early Pleistocene Expansion of the north hemisphere ice volume Tectonic uplift |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000324848800028 |
WOS关键词 | LATE CENOZOIC UPLIFT ; LAST 130,000 YEARS ; TIBETAN PLATEAU ; NORTH-ATLANTIC ; CLIMATE-CHANGE ; ASIAN MONSOON ; CHINESE LOESS ; STRONTIUM ISOTOPES ; TAKLIMAKAN DESERT ; EOLIAN DEPOSITION |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology |
WOS研究方向 | Physical Geography ; Geology ; Paleontology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/179145 |
作者单位 | Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China |
推荐引用方式 GB/T 7714 | Chang, Hong,An, Zhisheng,Wu, Feng,et al. A Rb/Sr record of the weathering response to environmental changes in westerly winds across the Tarim Basin in the late Miocene to the early Pleistocene[J],2013,386:364-373. |
APA | Chang, Hong,An, Zhisheng,Wu, Feng,Jin, Zhangdong,Liu, Weiguo,&Song, Yougui.(2013).A Rb/Sr record of the weathering response to environmental changes in westerly winds across the Tarim Basin in the late Miocene to the early Pleistocene.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,386,364-373. |
MLA | Chang, Hong,et al."A Rb/Sr record of the weathering response to environmental changes in westerly winds across the Tarim Basin in the late Miocene to the early Pleistocene".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 386(2013):364-373. |
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