Abstract:
Qaidam Basin, located at the large Mesozoic-Cenozoic sedimentary basin in north Qinghai-Tibet plateau, is one of the important exploration areas for oil and gas resources. After summarizing the research status of Jurassic strata at this basin, the author finds that there are still many different points of view in the basin property and structure type. The studies mainly focus on features of sedimentary facies and hydrocarbon source rock, but the researches in sequence, thickness and stretch of the strata sedimentation are few, just lingering on qualitative study. Sedimentary sequence of the strata and the sediments source tracing can objectively retrieve the orogenic evolution and uplifting type and regulation. Thus, through establishing the sedimentary sequence of Jurassic strata at northern Qaidam Basin, the structural activities of the neighboring orogenic belt at that time can be retrieved, which is a scientific and effective method for discussing the Mesozoic-Cenozoic structural evolution at northern Qaidam Basin.