Aeromagnetic anomalous feature of Xujiaweizi fault depression in the north part of Songliao basin appears two distinctive strips,the one is in NNW direction and the other is in NE direction.

• 松辽盆地北部徐家围子断陷航磁异常呈现两个明显的条带状,一个带为北北西向,另一个带为北东向。