LOESS DEPOSITS ON THE TOP OF SECTIONS OF NIHEWAN BASIN AND ITS PALAEOGEOGRAPHIC SIGNIFICANCE
Yang Xiaoqiang Li Huamei Li Haitao
1 Department of Earth Sciences, Zhongshan University,Guangzhou 510275,Guangdong
2 Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou 510640,Guangdong
Based on the study of the characteristics of magnetic susceptibility and grain-size of the loess on the top of some typical sections including Haojiatai(HJT), Xiaochangliang(XCHL) and Donggutuo(DGT) in the Nihewan basin, we try to demonstrate the palaeogeographic status of the basin from the Late Pleistocene. The results indicated that the loess can be divided into three layers: S1, L1, and S0, which have the perfect correlation with those in the Loess Plateau of China and the marine oxygen isotope stage MIS1~MIS5. It recorded the short-term variations of climatic and environmental evolution over the last 130 ka. of North China. Loess of these sections shows the diversity of evolution of the basin. The uplift of the eastern part of the basin due to faulting made the lake vanish and loess was deposited, however, the western part of the basin was still lake during this period.
About author: Yang Xiaoqiang, Doctor, born in 1972, graduated from Guangzhou Institute of Geochemistry, Chinese Academy of Sciences in 2000. Now he is engaged in quaternary environment and environment magnetics.
Cite this article:
. LOESS DEPOSITS ON THE TOP OF SECTIONS OF NIHEWAN BASIN AND ITS PALAEOGEOGRAPHIC SIGNIFICANCE[J]. J4, 2003, 5(2): 209-216.
. LOESS DEPOSITS ON THE TOP OF SECTIONS OF NIHEWAN BASIN AND ITS PALAEOGEOGRAPHIC SIGNIFICANCE[J]. JOPC, 2003, 5(2): 209-216.
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