formationandevolutionofsanddesertsinxinjiangnorthwestchinaiprovenancesofdesertsands

	formationandevolutionofsanddesertsinxinjiangnorthwestchinaiprovenancesofdesertsands
	Zhu Bingqi 1; Yu Jingjie 1; Qin Xiaoguang 2; Rioual Patrick 2; Liu Ziting 2; Xiong Heigang 3
刊名	journalofgeographicalsciences
	2014
卷号	24 期号:1 页码:177
ISSN号	1009-637X
英文摘要	Sandy desert landscape is a geological product of arid climate and abundant sand materials supply in natural conditions, therefore the formation of sandy desert is an ideal studying object for understanding the interaction between various stratigraphic/epigenetic spheres of the earth system. However, until now, the knowledge about the provenance and formation of these deserts in Xinjiang, Central Asia is diverse and inconsistent, a systematic review is necessary. Ancient aeolian sand sediments in the internal areas of these deserts and their twin dust deposits in the Cenozoic strata surrounding the Xinjiang deserts are direct and indirect clues reflecting the provenance of sand materials and the formation and evolution of deserts. Based on the geochemical, mineralogical and isotopic evidences of desert sands and relevant deposits in the peripheral regions, this paper reviews the research progress on the development of the sandy deserts in Xinjiang, Northwest China. Many proofs proposed that desert sands in Xinjiang were mainly sourced from the ancient pluvial, alluvial and fluvial sediments and were eventually achieved because of the local sand supply. It pointed out that the settings of tectonic structure in Xinjiang had made sediments both in the Tarim Basin and the Junggar Basin being influenced greatly by regional hydrological system and aeolian processes originated from the planetary wind system of westerly, the East Asian winter monsoon and the topographical mountain-valley winds. However, the directions of transportation paths are different between the hydrological dynamics and the aeolian dynamics, which are decided by the slantwise structures of the basins tectonics and the regional atmospheric circulation routes, respectively, and have determined anisotropies of the transport pathway of these sediments delivered by different agents. This results in a geological cycle of detrital sediment transportation in the two large basins and thus largely increases the degree of sediment mixing, alternation and recycle between younger and older sediment sources, as well as the complexity and diversity of sand provenances.
语种	英语
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/80029]
专题	中国科学院地理科学与资源研究所
作者单位	1.中国科学院地理科学与资源研究所 2.中国科学院地质与地球物理研究所 3.教育部
推荐引用方式 GB/T 7714	Zhu Bingqi,Yu Jingjie,Qin Xiaoguang,et al. formationandevolutionofsanddesertsinxinjiangnorthwestchinaiprovenancesofdesertsands[J]. journalofgeographicalsciences,2014,24(1):177.
APA	Zhu Bingqi,Yu Jingjie,Qin Xiaoguang,Rioual Patrick,Liu Ziting,&Xiong Heigang.(2014).formationandevolutionofsanddesertsinxinjiangnorthwestchinaiprovenancesofdesertsands.journalofgeographicalsciences,24(1),177.
MLA	Zhu Bingqi,et al."formationandevolutionofsanddesertsinxinjiangnorthwestchinaiprovenancesofdesertsands".journalofgeographicalsciences 24.1(2014):177.