本文叙述了开平盆地井儿峪组的地层特证,认为其岩性大部应为含泥灰岩和灰岩。本文对不溶残渣法进行了讨论,指出本区井儿峪组按不溶残渣含量可分为上、下两段四个旋迥,并有四个不溶残渣含量异常带。 This paper describes the stratigraphy of the Jing’ergyu Formation in the Kaiping Basin. It is believed that most of the lithology should be marl and limestone. In this paper, we discussed the insoluble residue method, and pointed out that the Jing’eru Formation in this area can be divided into upper and lower two sections by four non-dissolved residues with four insoluble residue content anomalies.