苏北地区井下浦口组地层研究

THE STUDY OF THE PUKOU FORMATION UNDER THE DRILLS IN NORTHERN JIANGSU

以苏北地区井下浦口组的钻井地质剖面的对比研究及部分重点层、段的微体古生物分析为基础 ,总结了浦口组的岩性、电性、古生物特征及其与上、下地层的接触关系 ,并将浦口组划分为四段 ;通过对浦口组及其各段残留地层分布的细化研究 ,结合构造演化、地震解释的部分研究成果 ,指出了浦口组的沉积格局 ;充分利用所获得的孢粉资料 ,探讨了“黑浦口”

This paper summarizes the lithological characters, electrical property, and fossil characters of the Pukou Formation as well as the contact relationship between its overlying and underlying strata on the basis of the correlation and study of the drilling well geological section of the downhole Pukou Formation in the northern Jiangsu area and the analysis of the fossils in some important beds and members. The Pu kou Formation is divided into four members in this paper. The sedimentary pattern of this formation is indicated on the basis of the detailed study of the distribution of the Pukou Formation and the residual strata of its members, combined with the tectonic evolution and seismic interpretation. The obtained sporopollen data are fully utilized to discuss the existence and the distribution feature of “Black Pukou”.