萨拉乌苏河流域高分辨率的沙丘砂常量元素分布指示的全新世寒冷事件(英文)

编号 zgly0001586718

文献类型 期刊论文

文献题名 萨拉乌苏河流域高分辨率的沙丘砂常量元素分布指示的全新世寒冷事件(英文)

作者 牛东风  李保生  杜恕环  温小浩  邱世藩  欧先交  杨艺 

作者单位 SchoolofGeographySouthChinaNormalUniversity  SchoolofGeographySouthChinaNormalUniversity  Guangzhou510631ChinaBaotouVocational&TechnicalCollegeBaotou010022China  Guangzhou510631ChinaStateKeyLaboratoryofLoessandQuaternaryGeo 

母体文献 Journal of Geographical Sciences 

年卷期 2008年01期

年份 2008 

分类号 P532 

关键词 SalawusuRiverValley  Holocene  dunesands  primaryelements  coldevents 

文摘内容 The components of the primary elements in the dune sands for the MGS1 subsec- tion of the Milanggouwan section in the Salawusu River valley, compared with those of mod- ern dune sands, show that they were caused by East Asian winter monsoon in the Mu Us desert during Holocene. The examined ages for the 11 layers of dune sands, based on the average sedimentary rate, are: 0 to 960, 1350–2240, 2470 to 3530, 4000 to 4180, 4290 to 4350, 4380 to 4760, 5040 to 5920, 6570 to 8270, 9020 to 9700, 9880 to 10160 and 10580 to 11080 a BP, respectively. The climatic events indicated by these dune sands are consistent with those records in the Huguangyan volcanic lake, Zoige peat bog, Hulu cave and Dunde ice core, particularly with the climatic fluctuations of the North Atlantic since 11 000 a BP. Among them, patterns from B0 to B8 correspond to the peak values of 0MD, 2D, 4D, 6D+8D+10D, 12D, 14D, 16D, 18D and 20D respectively. It might be caused by the North Atlantic ice age induced by the heat circulation, which strengthened the polar high pressure and Siberian-Mongolian high pressure and further led to the dominance of the winter mon-soon over China’s desert area.