摘要
鄂尔多斯盆地是位于华北克拉通西部的保罗－白垩纪沉积盆地。本文利用中、小型构造的解析成果重建了该盆地中、新生代的区域构造应力场，其中，印支、燕山和喜马拉雅运动最大主压力轴的产状分别为１７９°～３５９°∠２°～３°，１３０°～３１０°∠２°～４°，３０°～２１０°∠１°～２°。这一成果为解释它的形成与演化机制提供了一个重要窗口。
The Ordos basin, as a Jurassic-Cretaceous nonmarine one, is situated in the west part ofthe North China craton. In past decade, the hypothesis of forming and evolutionary mechanism for the basin was proposed by some Chinese petroleum geologists, but the evidence finished by dynamics of the earth yet remains to be found up in the future. For this reason, areconstruction of the palaeotectonic stress field of the Ordos basin in Mesozoic and Cenozoic,mainly based on the tectonic analyses of conjugate joint system and others, is made in this paper. The result shows that an average occurrence of the maxium principle compressive stressaxis is 179￣350°∠2￣3°in the indosinian, 130￣310°∠2￣3°in the Yanshanian, and 30￣210°∠1￣2°in the Himalayan movements respectively. It is postulated that the driving forcebehind those fields is derived from the collision and/or downgoing events of the Tethys andPacific tectonic realms along the margin of Asian continent.
基金
中国煤炭科学基金
