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对巴丹吉林沙漠东南缘查格勒布鲁剖面该层段的CGS3a层段(Chagelebulu Section 3a)139个样品的主元素——Si O2、Al2O3、TOFE(Fe2O3+Fe O)进行分析,划分出与地层旋回对应的5.5个化学元素旋回。研究认为:沙丘砂和黄土中Si O2呈现的峰和Al2O3、TOFE、(TOFE+Al2O3)/Si O2和CIA呈现的谷是类似于现代干冷的冬季风在过去多次作用的结果,而嗣后的湖相Si O2呈现的谷和Al2O3、TOFE、(TOFE+Al2O3)/Si O2和CIA的呈现的峰是类似于现代暖湿的夏季风在过去多次作用的结果。即35 000~25 000 a B.P.该沙漠经历了5次冬季风和6次夏季风交替的气候波动,这些气候事件与GRIP冰芯氧同位素记录的D/O(Dansgaard/Oeschger)事件相对应,Heinrich事件也在其中有很好体现。CGS3a层段所记录的千年尺度的气候波动可能是受到了北大西洋气候突变的影响。
The main elements of 139 samples of CGS3a (Chagelebulu Section 3a) in this interval in the segment of Chagrebro section southeast of Badain Jaran Desert were analyzed - Si O2, Al2O3, TOFE (Fe2O3 + Fe O) 5.5 chemical elements corresponding to stratigraphic cycles. The results show that the peaks of Si O2 in dune sand and loess and the valleys of Al2O3, TOFE, (TOFE + Al2O3) / Si O2 and CIA are similar to those of the modern dry and cold winter monsoon in the past. However, The peaks exhibited by the lacustrine Si O2 and the peaks exhibited by the Al2O3, TOFE, (TOFE + Al2O3) / Si O2 and CIA are the result of several episodes similar to the effects of the modern warm-humid summer monsoon. Ie 35 000 to 25 000 a BP The desert experienced five alternating winter and six summer monsoon climate changes corresponding to the D / O (Dansgaard / Oeschger) event recorded by the GRIP ice core oxygen isotope. Heinrich The incident is well represented in it. The millennium-scale climatic fluctuations recorded in the CGS3a interval may have been affected by the abrupt change in the North Atlantic.