An application of micropaleontology-sequence stratigraphy method in stratigraphic division —An example for the study of the Paleogene in the Guangjiapu area, Chengbei fault-step zone, Dagang

Abstract

The formation of the Paleogene in the Chengbei fault-step zone of the Dagang off-shore area is very complex and the stratigraphic division and correlation are relatively difficult. A method of micropaleontology-sequence stratigraphy is proposed herein. The study considers Well Zhangcan 1 as an example to prove that the scheme of stratigraphic division is feasible by conducting micropaleontology-sequence stratigraphy in the Guanjiapu area of the Chengbei fault-step zone. The application of micropaleontology-sequence stratigraphy method indicates that Member 1 of the Shahejie Formation in Well Zhuanghai 808×1 and Member 3 of the Dongying Formation of the Paleogene exist.

Keywords

sporopollen, algology, Paleogene, Chengbei step-fault zone, Huanghua depression