The Coupling Relationship Of Crust-mantle Scale Faults With The Faults Of Upper Construction In Deep Of Songliao Basin

In Songliao basin,the dominant reservoir of the lower Cretaceous,Yingcheng Formation is volcanic rock. Volcanic activity and hot fluids'pattern in deep are up to composition,structure,and regional tectonic stress field of mantle and crust.All the above that determined the distribution of inorganic gas reservoir. Coupling the crusst-mantle structure and foundation faults could be a passage for inorganic gas upflow and then accumulated.So formation Mechanism and distribution of foundation faults are of great significance.This paper had studied five aspect such as the dynamic setting and processes of tectonic;regional fault type,feature,and distribution regular;the relationship of between volcanic rock and deep fualts, foundation faults'character;formation of crust-mantle structure, features of geophysics and fault;relation of crust-mantle structure and uper fault,and what's the relation between inorganic gas and them.As a result,we found that:1,the basin's geodynamic background has significace affect on the basin's development of itself;2, regional fault system control the pattern of Songliao basin and also the hydrocarbon migration and reservoir;3, Moho's form reflects the development of regional dynamics,and faults related to rift;4,confirmed the existence of low-speed high-conductivity layer,believe that it is the mantle fluid concerning with inorganic gas;5,crust-mantle structure in deep has complex relation with foundation faults,such as deep fault cutting,brittle-ductile shear zone,volcanic edifice,hot diapir body.At present we aimed at sedimentary basin,the knowledge and the pattern of deep crust-mantle structure are diversity,we have difficulty in guiding practice.