The Xar Moron River Fault is the final suture between the North China Plate and the Siberia Plate.The location of its western part has been well known,but the extension of its eastern part remains unclear and has aroused much controversy,especially concerning its location under the Songliao Basin.Based on field investigation along the western margin of the Songliao Basin(Nenjiang-Balihan fault) and previous researches on the Central Fault in the Songliao Basin,it is found that the Nenjiang-Balihan Fault and...