陆相裂陷湖盆三级层序类型与发育模式——海拉尔盆地某凹陷为例

海拉尔盆地某坳陷是典型的白垩纪陆相湖盆。作者利用地震、单井等资料，对目标坳陷进行层序地层学的分析和研究，将该区早白垩纪地层划分出4个三级层序，并对每个层序特征及层序内部沉积特点进行了分析，在此基础上阐述了在该坳陷层序类型与层序发育模式。

Study on development model of third-order sequence and characteristics of sedimentary system of a representative continental lacustrine subbasin

The sequence stratigraphy and sedimentary system of the early Cretaceous of subbasin of Hailaer basin have been studied by employing seismic, well log and drilling core data. The principles of divided sequence and identify marks of sequence boundary have been describedn. On the basis of the identifica- tion and correlation of sequence stratigraphic units, the object stratum has been divided into four third - order sequences. The paper analyzes the main cause of each sequence in detail and sums up different characteristics of various sequences developed pattern. In addition, the controlling effects of every sequences stratigraphic pattern on the petroleum reserves are pointed out.