突泉盆地南部结构及含油气远景——基于大地电磁测深结果

摘要

Based on magnetotelluric sounding results in combination with regional geology, the authors analyzed structural framework, structure and stratigraphic distribution of southern Tuquan Basin. The results show that the Tuquan Basin is a superimposed basin, in which Mesozoic strata were developed on the basis of late Paleozoic marine sedimentary basin, and late Paleozoic structure probably controlled Mesozoic sedimentation. The Tuquan Basin might be a compression type basin developed in the front of the overthrust nappe belt, and the two suites of low-resistance beds ( Hongqi Formation and lower Permian strata) might be the potential hydrocarbon-produ-cing strata.%基于大地电磁测深结果,结合区域地质特征分析突泉盆地南部的构造格架和结构、地层的展布特征及深部的控制作用. 研究发现突泉盆地是一个叠合盆地,其中生界地层是在晚古生代海相沉积盆地基础上发展起来的,晚古生代的构造对中生代的沉积有控制作用. 突泉盆地可能是发育于逆冲推覆带前缘的挤压型盆地,其两套低阻层下侏罗统红旗组和下二叠统地层是潜在的生烃层系.