Study On The Sedimentary Environment Of North China Continent At The End Of Permian Period

North china continent is one of the most important continents in China,which lies between thirty-two and forty-two northern latitudeare and between one hundred and ten and one huandred and twenty eastern longitude,including four geographic elements:liaodong and Shandong hill on the east, huanghuai sea and the downsteam of liaohe river plain in the middle, loess plateau on the west and jibei mountainous region on the north. For quite some time, north china continent has been influced by the structural evolution of the qinling-dabie orogenic zone and near extend. It has undergone very complex action of many times'making mountains in the mainland and developing basins. It includes all kinds of roles of making mountains and developing basins,which have different character,date and type.It has formated very complex composing material elements and versions of space structure.There are tremendous resources of hydrocarbon mother rock in the north china continent. Now a lot of oil field such as shengli, dagang, zhongyuan, north china and so on have been developed. But the storability discovered is very limited.The degree of exploration at the end of permian period is much less. For quite some time,the study on the sedimentary environment of north china continent at the end of permian period has not gone well.Because the terrain of the continent is very complex and the sedimentary mantle has the feature of vest distribution rang, low deposition rate and slow lithofacies gradual transition. So the study on the sedimentary environment of north china continent at the end of permian period is very important to the exploration activeity.This thesis bases on the object of the study on the sedimentary process and reservoir nature of north china continent at the neopaleozoic.It is one of the objects in the hydrocarbon resources strategy ward,which is the great hydrocarbon object in the Ministry of Land and Resources P.R.C.I t is second and the number is 2009GYXQ17. We have gathered all the geological information and existing fruits of advanced development of north china continent at the end of Permian period completely. First, we make the area which has relatively higher degree of exploration as the point of departure, according to the clue of referring to the spot and plane, fanning out from spot to plane and advancing entirety. And we make use of the files such as outcropping, drilling core, borehole log, earthquake and so on and the nature of region to analyze the sedimentary character and the evolutionary process. It is to say to analogy outcropping, using the files of wells and earthquake to define the sedimentary context, using the nature of region to define the framework, using the preponderance to define the pattern of exhibition. We can study on the sedimentary environment of north china continent at the end of Permian Period comprehensively. And we can analyze the orientation, issue and pattern of the invasion of north china continent at the end of Permian Period with the outcropping profile of the field and the profile of the well drilling in the basin , referring to the analyses of geochemistry experiments and the research of predecessors. We can use the rare-earth element analytical method, structural analytical method and sedimentary analytical method to define the resource of material of the north china continent at the end of Permian Period.