美国山区有几种披覆褶皱的油气圈闭类型。在中国的一些盆地中,特别是像塔里木盆地那样的大陆盆地,也可能有这种披覆褶皱的圈闭类型。在美国西部的一些地震剖面上,这种披覆褶皱是容易识别的,同样,在中国也应当是容易识别的。在基底厚而坚硬的弧后构造区,上部岩石圈的基底是花岗岩块,其上沉积了披覆形构造。由于与收敛的大陆板块有关的挤压作用,引起了基底的垂向升降运动,并且通过岩石圈向外传递。在基底内部,由于存在有弱的地层和挠曲作用,使得基底断裂的位移和倾角都发生了变化,这些变化导致了披覆褶皱几何形态的改变。在收敛区边缘的俯冲带,被平移断层所切割。这个平移断层有时延伸至披覆褶皱带下部的基底内部,并改变了披覆褶皱的基本形态,仅管这些构造是复杂的,但根据油气圈闭与褶皱的关系,仍可以分为三种类型。褶前(Preflod)圈闭,由于受基岩块平缓冲撞的影响,具有典型的沉积特点,砂坝和尖灭就是有代表性的褶前圈闭;极大多数圈闭类型发生在褶皱期间,而且是构造圈闭。背斜脊部、陡翼逆断层、缓翼地堑和褶曲枢纽是在褶皱期间形成的最一般的圈闭类型;褶后(post-fo-lding)圈闭是典型沉积圈闭,既有褶皱陡翼、也有褶皱缓翼的尖灭圈闭和不整合圈闭。在美国的蒙大拿州、怀俄明州、科罗拉多州和阿根廷,根据露头、地震剖面、钻井及陆地卫星资料都可以见到上述圈闭的例子。通过研究“披覆”模型和合成地震记录,提高了预测披覆褶皱位置和性质的能力。通过区域构造资料和陆地卫星资料分析表明,发育在厚层花岗岩壳上部的中国的一些盆地和弧后盆地,以及板块压缩盆地,象中国西部的塔里木盆地,在那里可能存在有这样的披覆褶皱的圈闭类型。 There are several types of trapped oil and gas trapped in mountainous areas of the United States. This type of fold-over trap may also be found in some of China’s basins, especially in the continental basin such as the Tarim Basin. In some seismic sections of the western United States, this drape is easily identifiable and, as such, should be easily identifiable in China as well. In the thick and hard back-arc tectonic zone of the basement, the basement of the upper lithosphere is a granite block on which a cladded structure is deposited. Due to the squeezing action associated with the converging continental plate, vertical movements of the substrate are caused and transmitted outward through the lithosphere. Within the substrate, both the displacement and dip angle of the substrate fracture change due to the presence of weak strata and flexing, and these changes lead to changes in the geometry of the cladding fold. Subduction zones at the edge of the convergence zone are cut by translational faults. This translatory fault sometimes extends to the inside of the basement covering the lower part of the fold belt and changes the basic form of the fold wrap, although these structures are complex, but according to the relationship between hydrocarbon trap and fold, there are still three types . Preflod traps have typical sedimentary characteristics due to the gentle impact of bedrock. The sand dams and pinnacles are typical fold-front traps. Most of the trap types occur during the fold, But also the construction of traps. The anticlinal ridges, steep-wing thrust faults, slow-wing graben and fold-hinge are the most common traps formed during the fold; the post-fo-lling trap is a typical sedimentary trap with both fold Steep wings, there are also wrinkled slow-wing perilous trap and unconformity trap. In the United States, Montana, Wyoming, Colorado, and Argentina, examples of such traps can be found based on outcrops, seismic profiles, drilling and terrestrial satellite data. By studying the “drape” model and synthetic seismograms, the ability to predict the position and nature of drape folds is enhanced. Based on the regional tectonic data and the analysis of terrestrial satellite data, it is shown that some basins and backarc basins in China and the plate compression basins developed in the upper part of the thick granite crust, such as the Tarim Basin in western China, may have such drape folds Trap type.