Title: A Summary of Loessial Researches in Shandong
Abstract: The loess of Shandong, located in the margin of Eastern China,shows some stripes as a whole,especially on the windward slopes,the terraces of the central mountainous region and northwest coastal zone of Jiaodong hills.Among the loess sections distributed in Shandong,the Fujiazhuang section(30m)at Qingzhou is the best,and can be regarded as the typical section of Shandong.TL dating results of Fujiazhuang loess show that the lowest layer of Shandong loess is L9,with the age of 0.8 Ma B.P.,which accords with the third borderline determined by Liu Dongsheng.Many sections have the tertiary red clay layers. Based on the main researches on loess spreading all over Shandong enumerated in this paper,the authors conclude that the grain sizes, composition and origins of loess between Shandong and inland regions is obviously different,and the same within Shandong. Based on the characters, two areas can be allocated: the coastal district, islands and islets of the Bohai Sea and the central district of Shandong.The former loess in which many tiny marine fossils have been found and whose grain sizes are much coarser, however,the latter has more complex material sources and characters.According to the analytical results of grain sizes and spore,the sea level of Shandong has been known to have several fluctuations between transgression and regression since the middle Pleistocene,so bald Bohai shelf was the main material sources for the continental loess during ice ages,and it severely influences the loess of Qingzhou,Weifang etc,the districts of the central district of Shandong. But the loess of Zibo and Jinan,the west of the central district, mostly originates from western Gobies and deserts.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: article
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Cited By Count: 11
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