层序地层学研究最关键的是对层序界面的识别。以四川盆地包界地区须家河组为例,综合应用野外露头、钻井岩芯、测井曲线、地震剖面等资料,识别出4种类型的层序界面,它们分别是:冲刷面、岩性岩相转换面、古风化壳、沉积结构转换面。并阐述了研究区层序界面在钻井岩芯、野外露头、测井曲线、地震剖面上的特征、识别标志和表现形式。这一研究成果对于正确划分研究区须家河组层序具有重要意义。 The key to sequence stratigraphy research is the recognition of sequence boundaries. Taking the Xujiahe Formation in the Baojie area of ​​Sichuan Basin as an example, four types of sequence boundaries are identified by comprehensively using such data as outcrops, drilling cores, well logging curves and seismic profiles. They are: erosion surface, lithology Lithofacies conversion surface, ancient weathering crust, sedimentary structure conversion surface The characteristics, identification marks and forms of sequence stratigraphy in drilling cores, outcrops, well logs and seismic sections of the study area are described. This research result is of great significance for the correct division of Xujiahe Formation sequence in the study area.