黑龙江省东部虎林盆地断块构造特征及其运动学规律

虎林盆地是由北东向分布的三个断隆和三个断陷所组成的中、新生代沉积盆地。在空间上 ,该盆地呈断隆与断坳相间的垒堑式构造样式。盖层中的主干断裂主要表现为张扭性断裂及其组合。虎林盆地的伸展史与沉降史表明 ,自中生代以来经历了两次沉降成盆与两次构造反转的盆地构造演化阶段。前者是该盆地生储盖组合的形成期 ,后者为盆地盖层主要圈闭构造的形成期。

THE STRUCTURE FEATURES AND THE MOVEMENT REGULARITY OF FAULT BLOCKS IN HULIN BASIN ,EAST HEILONGJIANG PROVINCE

Hulin basin is a Meso-Cenozoic sedimentory basin which consists of three uplifts and three depressins in NE direction.The basin structure shows rift-graven style alternating with fault uplift and fault depression. The mainstay faults in sedimentary sequence are tenso-shear faults and their association.The extentioal and subsidence history of the basin indicate that the basin went through two stages of subsidence-forming basin and two stages of structure inverson from Mesozoic era. The former was a period of depositing source-reservor-cap rocks assemblages, and the latter was a period of forming main structural traps.