摘要
针对不定向的岩芯样品，笔者利用了岩石的古地磁测试结果，通过旋转变换，恢复了样品的原始磁化率方位。磁组构测试结果显示辽河盆地新生代岩石变形微弱，岩石以压扁变形为主。多种筛选分析结果揭示出辽河盆地在沙三、沙二沙一与东营期所受的区域应力方向分别为：ＮＥ－ＳＷ（４０°～５０°）、ＮＷＷ－ＳＥＥ（１００°～１２０°）和ＮＥ－ＳＷ（６０°～７０°）。
A new method to recover the original arimuth of the magnetic susceptibility by using the results of paleomagnetic measurements of unoriented samples is proposed in this paper. Studies of the magnetic fabric suggest that the deformation of the Cenozoic rocks in the Liaohe basin is weak and is dominated by flattening one. The directions of regional stresses that the Liaohe basin underwent during the periods of the third member and the second-first members of the Shahejie Fm. and the Dongying Fm. have been determined by various sieving methods, to be NE～SW(40°～50°),WNW ESE(100°～120°) and NE SW(60°～70°) respectively.
