辽西南天门断裂及其与北票组发育的关系

NANTIANMEN FAULT IN THE WEST LIAONING PROVINCE AND ITS RELATIONSHIP WITH THE DEVELOPMENT OF BEIPIAO FORMATION

通过对辽西地区ＴＭ图像地质解译和对南天门断裂的研究表明，虽然南天门断裂现今在地形地貌上表现为其西的北票、朝阳、建昌盆地和其东的金羊盆地的区域性分隔断裂，但是实际上在早侏罗世末以前，则是一个统一盆地内的潜伏（基底）断裂，即非现今的盆地边缘断裂。由于盆地内普遍发育含有油气性良好的下侏罗统北票组，因此，辽西地区应具有良好的油气勘探开发前景。

The geological interpretation of the west area of Liaoning by TM image and study on the Nantianmen fault ,indicate that Nantianmen fault is not a basin edge fault between Beipiao basin Chaoyang basin Jianchang basin and Jinyang basin,but a hidden fault in the middle part of the general basin before the end of Middle Jurassic.Because Beipiao Formation in lower Jurassic widely developed in the basin has good oil gas indexes,the west area of Liaoning is a good exploiting prospects of oil and gas.