论文部分内容阅读
造山带和克拉通之间的盆地称之为前陆盆地。近年来关于陆内(板内)造山的理论进一步拓宽了前陆盆地的含义。笔者建议将毗邻大陆板内造山带的拗陷盆地命名为陆内前陆盆地,并可以与典型前陆盆地类比。造山带向前陆区逆冲引起山麓带岩石圈的构造响应,形成前隆和前陆盆地。不同地区的前陆盆地具有明显的区域性特,其演化阶段性也有许多差别。它们受岩石圈基底性质和大地构造位置,造山带隆升和剥蚀。前陆盆地沉积速度和开放程度等多种因素影响。最新的方法是采用校正的构造回剥曲线、时间段曲线、沉积速率等定量数值描述造山冲断楔和前陆盆地间的构造-沉积平衡关系,即山体隆升逆冲与盆地构造沉降的平衡,以及山体逆冲推移与盆地沉积间的平衡。南天山南麓库车陆内前陆盆地为典型的封闭系统,是理想的研究区。上述方法对库车陆内前陆盆地的分析表明,经过校正的回剥曲线反映逆冲和沉降更为精确。结合时间段曲线,沉积速率和区域地质资料能得出库车陆内前陆盆地生储盖组合与储油构造形成的主要时期和规律,为油气勘探提供佐证。
The basin between the orogenic belt and the craton is called the foreland basin. In recent years, the theory of intracontinental (intraplate) orogeny has further broadened the meaning of foreland basins. The author suggests that the depression basin adjacent to the intraplate continental orogenic belt be named inland foreland basin and analogous to the typical foreland basin. The thrust of the orogenic belt leads to the tectonic response of the lithosphere to the foothill, resulting in the formation of the Qianlong and foreland basins. Foreland basins in different regions have obvious regional characteristics, and their evolution stages have many differences. They are affected by lithosphere basement and tectonic positions, orogeny uplift and erosion. Foreland basin deposition rate and open degree and other factors. The latest method is to use the corrected tectonic backslash curve, time curve and sedimentation rate to describe the tectonic-sedimentary balance between the upwelling thrust of the orogenic thrust and the foreland basin, that is, the balance between the uplift of the mountain uplift and the tectonic subsidence of the basin , As well as the balance between the thrusting of the mountain body and the deposition of the basin. The Kuqa intracontinental foreland basin in the south of Tianshan Mountain is a typical closed system and is an ideal research area. The above analysis of Kuqa intracontinental foreland basin shows that the corrected back-peel curve reflects the thrust and settlement more accurately. Combined with the time curve, sedimentation rate and regional geological data, we can get the main periods and regularities of the formation, formation and association of the reservoirs and reservoirs in the Kuqa intracontinental foreland basin and provide evidence for the exploration.