呼兰地区登娄库组层序界面识别与地层格架研究

应用陆相湖盆层序地层学的理论和方法,综合利用地震、测井、岩芯等资料,对松辽盆地北部呼兰对青山地区白垩系登娄库组层序界面、层序内的最大湖泛面和首次湖泛面进行识别。建立了登娄库组层序地层格架。划分为3个体系域,其识别标志为地震、露头、测井等资料上的特征。层序的体系域为LST、TST、HST。在此基础上,研究了登娄库组层序形成的主要控制因素,即构造隆升活动、湖平面升降和物源供应。

Identification of sequence boundaries and establishment of sequence stratigraphic framework in the Denlouku Formation in the Hulan area

Using the theories and methods of sequence stratigraphy in lake basins, we analyzed seismic, logging and drilling core data of the Denlouku Formation in the Hulan Duiqingshan area of the Songliao Basin in order to understand its sequence stratigraphy. We identified sequence boundaries and maximum flooding surfaces and established the sequence stratigraphic framework of the Denlouku Formation; It can be divided into three systems tracts. Data used in the sequence and systems tract identification include seismic, outcrop, and logging data. Systems tracts in sequence include LST, TST, and HST. The controlling factors in sequence development are structural swelling, lake level change, and sediment supply