Arid
DOI10.3724/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; Zhang, JinChun1,2; Li, FeMing1,2
通讯作者Zhu, ShuJuan
来源期刊JOURNAL OF ARID LAND
ISSN1674-6767
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
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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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