A CORRELATION OF DEFORMATION CHARACTERISTICS BETWEEN THE KUQA DEPRESSION AND THE SOUTHWESTERN TARIM DEPRESSION IN THE TARIM BASIN

Based on a correlation of dynamic background,deformed sequences,decollement structures between the Kuqa depression and the southwestern Tarim depression,there is obvious difference in the two areas in terms of their structural deformation.The compressional stress is dominated in the Kuqa area with little change of deformation characteristics in whole area but a decreasing vertical deformation from north to south.The southwestern Tarim depression is showed strong wrench deformation with different intensity in different parts.As a result,structural traps are poorly developed in the deep part and Maigaiti slope,and faults can not be acted as a vertical passway of hydrocarbon migration.