Abstract：
In order to clear the coupling relationship between sedimentary and tectonic evolution in the Denglouku Formation in Gulong area of northern Songliao Basin,we use seismic,drilling,logging and core data of Gulong area,by comprehensive study of tectonic evolution characteristics,sequence stratigraphic framework and sedimentary characteristics to analysis the control function of tectonic evolution to sedimentary filling characteristics in Denglouku Formation of Gulong area,the results show that in Denglouku Formation of Gulong area the depositional period is fault-depressed diversionary,also can be further divided into four tectonic evolution stage,which is early and late shrinking stage in fault basin,early and late embryonic stage in depression basin,corresponding to the four third-order sequence(Sq1-Sq4); Denglouku Formation of Gulong area main development alluvial fan,fan delta,sublacustrine fan,fluvial facies,braided river delta,shallow water delta and lake sediments depositional systems; Tectonic evolution controls the sedimentary filling evolution in Denglouku Formation,the sedimentary system distribution characteristics and sedimentary evolution model has significant difference in each tectonic evolution stage,that is,sedimentary filling characteristic and tectonic evolution process has good coupling relationship.The concrete embody:in early(Sq1)and late(Sq2)shrinking stage,lower strata of fault basin was controlled by fault,the sedimentary filling characteristics accord with the sedimentary evolution mode of terrestrial rift-subsidence lacustrine basin; The upper of fault basin in the late(Sq2)shrinking stage,and the formation of depression basin in early(Sq3)and late(Sq4)embryonic stage has depression sequence stratigraphic features,which the upper of fault basin in the late(Sq2)shrinking stage and early(Sq3)embryonic stage in depression basin belongs to "rivers-shallow water delta" depositional model of depression basin; The late(Sq4)embryonic stage in depression basin development "flood-overlake" depositional model in depression lake basin under the arid background.
. The coupling relationship between sedimentary and tectonic evolution in the Denglouku Formation in Gulong area of northern Songliao Basin[J]. Chinese Journal of Geology, 2012, 47(4): 1162-1175.
2012, Vol. 47 
