The author suggests that the Sikouzi Formation should not be used in the early Tertiary correlation in the areas of Ningxia, Gansu and wester...

• 并建议在西北地区东部下第三系对比中不用寺口子组,或仅在宁夏暂予保留,而在甘肃、内蒙古西部采用新建的乌兰乌珠尔组。