华南新元古代南华大冰期气候岩石地层对比

Stratigraphic correlation on climate and rock during the Nanhua Great Ice Age of the neoproterozoic in South China

针对"南华系"自提出并在2001年正式使用以来,至今仍不能指定其标准剖面和底界层型这一问题,以湘黔桂交界区连续完整的黎家坡南华系剖面为基础、以南华大冰期各气候波动阶段所留下的沉积记录—特殊的气候岩石地层组合为标准,建立了南华大冰期气候岩石地层对比标志。将湘黔桂交界区的南华系与黔东北、湘西北、峡东等地区的南华系进行气候岩石地层对比,证明了湘黔桂交界区的黎家坡南华系剖面是华南最完整的南华系剖面。以黎家坡南华系剖面为基础,开展南华系标准剖面建立和底界层型研究,将有可能取得突破。

Since the ＂ Nanhua system＂ is put forward and formally used in 2001,it still can not specify its standard section and bottom boundary layer type.This paper established a climate lithostratigraphic comparison mark of Nanhua Great Ice Age based on the intact and continuous Lijiapo Nanhua system section in Hunan,Guizhou and Guangxi and the sedimentary records of various climate fluctuations during Nanhua Great Ice Age.Lijiapo section in Hunan,Guizhou and Guangxi is the most complete section of Nanhua system in south of China by comparing Nanhua system in Xiang（Hunan）-Qian（Guizhou）-Gui（Guangxi）area with in northeastern Qian,northwestern Xiang and eastern yangtze gorges.Based on the Nanhua section of Lijiapo,the establishment of the standard section of the Nanhua system and the study of the bottom boundary type are carried out.It will be possible to make a breakthrough.