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女山新生代碱性玄武岩中的中性麻粒岩包体锆石SHRIMP U-Pb定年结果表明, 该地区下地壳形成时代主要在约2400~2200 Ma之间, 经历麻粒岩相变质作用的时代为1915 ± 27 Ma. 较老的下地壳形成时代与女山麻粒岩包体地球化学资料所显示的古老物质成分特征相呼应, 但是其归属于华北克拉通还是扬子克拉通则难以明确. 锆石中强烈的Pb丢失现象暗示, 女山地区下地壳也受到了中国东部普遍存在的中-新生代时期岩浆底侵作用的影响.
The SHRIMP U-Pb dating of the Neoproterozoic granulite envelop in the Nanshan basaltic basalts shows that the age of the lower crust in this area was mainly between 2400 and 2200 Ma, and experienced metamorphism The age is 1915 ± 27 Ma. The older age of the lower crust echoes that of the ancient material composition shown by the geochemical data of the Lvyang granulite inclusions, but it is difficult to determine whether it belongs to the North China craton or the Yangtze craton. The intense Pb loss in the rock implies that the lower crust in the Nvshan area is also affected by the magmatic underplating that prevailed during the Meso-Cenozoic in eastern China.