Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3724/SP.J.1227.2011.00114 |
The formation age and evolution of Kumtagh Desert | |
Tang, JinNian1,2; Su, ZhiZhu3; Ding, Feng1,2; Zhu, ShuJuan1,2; E, YouHao1,2; Zhai, XinWei4; Yi, ZhiYu4; Liu, HuJun1,2![]() | |
通讯作者 | Zhu, ShuJuan |
来源期刊 | JOURNAL OF ARID LAND
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ISSN | 1674-6767 |
出版年 | 2011 |
卷号 | 3期号:2页码:114-122 |
英文摘要 | The ancient aeolian sand has been regarded as an indicator for the formation and evolution of a desert in the past. Kumtagh Desert is located at the northern fringe of Qinghai-Tibet Plateau. The first integrated scientific investigation to the desert was carried out during the period of 2004-2006. Kumtagh Desert is an ideal natural model for studying the formation and evolution of the desert because the Quaternary strata containing ancient aeolian sands are widely distributed. The integrated field investigation and studies on sedimentary, chronology and palynology of typical profiles named Suosuo gully, Xiaoquan gully and gravel body with ancient aeolian sand layers showed that Kumtagh Desert was probably formed as early as 2,097.7 +/- 314.7 ka BP. During the period of 386.9 +/- 58.0 ka BP to 285.9 +/- 42.9 ka BP, the desert largely expanded and formed its modern distribution pattern. The desert was originally developed in the southwest, subsequently, expanded to the north and northeast. The sedimentary fades of Suosuo gully profile revealed that the desert experienced at least 19 cycles of advance and inverse processes of desertification with an average period of 110 ka in the Quaternary. The neotectonic movements played an important role in the formation, development and geomorphology of the desert. On one hand, the movements caused the formation of intermontane fault basin, which was further developed towards the closed drought basin, and caused the formation of natural environment. On the other hand, under the control of surrounding faults, the unique broom-shaped desert landscape was formed, and the gullies and sand ridges in this region experienced an abrupt directional change from north by west to north by east at the location of 39 degrees 45’-39 degrees 55’N. The unique landscape of gravel body that occurred widely in the northern desert was formed after 285.9 +/- 42.9 ka BR The results in this paper provide the scientific basis for studying the formation age and evolutionary process under the dry climate and environment in the northwestern China, and the uplifting of Qinghai-Tibet Plateau as well as its responses to the global climate changes. |
英文关键词 | Kumtagh Desert formation age evolution ancient aeolian sand |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000293496100005 |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 兰州大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/168957 |
作者单位 | 1.Minqin Natl Studies Stn Desert Steppe Ecosyst, Minqin 733300, Peoples R China; 2.Gansu Desert Control Res Inst, State key Lab Breeding Base Desertificat & Aeolia, Lanzhou 730070, Peoples R China; 3.Shanxi Univ, Sch Hist & Culture, Taiyuan 030006, Peoples R China; 4.Lanzhou Univ, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Tang, JinNian,Su, ZhiZhu,Ding, Feng,et al. The formation age and evolution of Kumtagh Desert[J]. 兰州大学,2011,3(2):114-122. |
APA | Tang, JinNian.,Su, ZhiZhu.,Ding, Feng.,Zhu, ShuJuan.,E, YouHao.,...&Li, FeMing.(2011).The formation age and evolution of Kumtagh Desert.JOURNAL OF ARID LAND,3(2),114-122. |
MLA | Tang, JinNian,et al."The formation age and evolution of Kumtagh Desert".JOURNAL OF ARID LAND 3.2(2011):114-122. |
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