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中国东部白垩—古近纪盆地是中生代以来板块构造运动体制下的产物。断裂对盆地的形成和发展起着重要的控制作用。以北东和北北东向为主的深断裂体系强烈活动以及其间受到新、老东西向断裂的分割作用,决定了盆地的整体展布也具有东西分带南北分块的总格局。对单个盆地而言,断裂与盆地的发展同步,特别是控盆断裂或盆缘断裂的活动史,与盆地的形态、规模、沉陷幅度、沉积特征、岩相展布密切相关。而分布在盆内的诸多同生断层的不均一活动,促成了盆地的次级分割,导致多凸多凹结构的形成,从而使得那些在成盐之前生长指数较大的断层所控制的块段汇集浓缩水体形成聚盐凹陷。大汶口盆地及江汉盆地潜江凹陷北部的成钾中心都和这种机理相联系。
The Cretaceous-Paleogene basin in eastern China is the product of tectonic movement since the Mesozoic. Faults play an important role in controlling the formation and development of the basin. The strong activity of the deep fault system dominated by the NE and NE direction, as well as the division between the east and west faults, determined that the overall distribution of the basin also has the pattern of the north-south block of east-west division. For a single basin, faults are synchronized with the development of the basin, especially the activity history of basin-controlled faults or basin margin faults, which are closely related to the basin morphology, scale, subsidence amplitude, sedimentary characteristics and lithofacies distribution. The heterogeneity of many synsedimentary faults distributed in the basin contributed to the secondary subdivision of the basin, resulting in the formation of multi-convex and polygranular structures, so that the blocks controlled by faults with larger growth indices before salt formation Pool concentrated water to form polybasic sags. The Dawenkou basin and the potassium-forming center in the northern Qianjiang Sag of the Jianghan Basin are all linked to this mechanism.