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应用露头层序地层学的研究方法对桂中合山－来宾一带的合山组进行了系统研究，共识别出7个层序界面及这些界面所划分的6个层序，其中5个为1类层序，1个为Ⅱ类层序。层序发育具有被动大陆边缘型特征。台地区为浅水碳酸盐岩沉积，盆地区为严重欠补偿条件下的硅质岩沉积。
The outcrop sequence stratigraphy method was applied to systematically study the Heshan Formation in the Heshan-Laibin area of Guangxi Zhuang Autonomous Region, and identified seven sequence interfaces and six sequences divided by these interfaces, of which 5 are 1 Class sequence, a class Ⅱ sequence. Sequence development has the characteristics of passive continental margin. The Taiwan area is characterized by shallow carbonate deposits and the basin area is under the condition of serious and undercompensation of siliceous rocks.