The identification of unconformity and the reconstruction of ancient landform in Hailar Basin

摘要

Hailar Basin is a haft-graben fault basin which suffered multi-stage tectonic transform, are formed by multiple mono-basins which superimposed and compound in multi-direction and has complex structures. Stratigraphic unconformity is as the famous hydrocarbon migration pathways system in Hailar Basin. Its identification, restoration and reconstruction of ancient landform have very important significance. By means of composite analysis of the information of seismic, well logging and geology we identified the characteristics of denudation areas of layers in Hailar Basin. On this basis utilizing restoring method of layers restored denudation thickness in plan, using Vue 5 Esprit restored three-dimensional diagramins of the ancient landform of every depression in the basin in each geologic history period and then analyzed the ancient landform and the pale environment.