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赣南崇义-永新地区的奥陶系是一套以连续沉积的黑色含笔石地层为主的碎屑岩系,是华南珠江盆地奥陶系的代表.但其中的上奥陶统部分存在着较为严重的划分和对比问题.笔者等在重新研究了其中有关的重要笔石属种之后,发现由不同著者建立的石口组和花面垄组即为(氵韩)江组的一部分,其下陇溪组为上奥陶统桑比阶(Sandbian Stage)的沉积.在重新厘定了崇义-永新地区奥陶系划分和对比的基础上,笔者提出陇溪组黑色含笔石地层与其上(氵韩)江组巨厚碎屑岩系之间的生物相和岩相的剧变,正是广西运动在赣南的表现,从而为广西运动的发生提供了重要的时间值.
The Ordovician in the Chongyi-Yongxin area of southern Jiangxi is a set of clastic rocks dominated by continuous sedimentary black-bearing penolith strata and is representative of the Ordovician in the Pearl River Basin of South China, but the Upper Ordovician part There is a more serious division and comparison of the author after the re-study of one of the important penicillin species, found by different authors to establish the stone mouth group and the flower ridge group is (Han) Jiang group part, The Lower Longxi Formation was deposited as the Upper Ordovician Sandbian Stage.Based on the redefinition of the Ordovician division and contrast in the Chongyi-Yongxin area, It is the performance of Guangxi movement in Gannan, which is a significant time value for the occurrence of Guangxi movement.