通过华北前寒武纪花岗岩类的研究，提出英云闪长岩和奥长花岗岩（Ｔ１Ｔ２）代表不成熟陆壳组成，Ｔ１Ｔ２Ｇ１Ｇ２代表半成熟陆壳组成，花岗闪长岩和花岗岩（Ｇ１Ｇ２）代表成熟陆壳组成。讨论了大陆根的形成与性质。识别出华北地台内１０个太古陆核。讨论了中太古代初始陆核、新太古代陆核；新太古代末两个微大陆尺度的陆核的形成；早元古代两个成熟陆核的构造拼合并形成华北克拉通 Based on the study of the Precambrian granitoids in North China, it is suggested that T1T2 is representative of immature continental crust, and T1T2G1G2 is representative of semi-mature continental crust. The granodiorite and granite (G1G2) represent Mature continental shell composition. Discusses the formation and nature of continental roots. Identify ten North Pacific terrestrial nuclear core. The formation of the first two continental continent continental nuclei at the end of the Neo-Archean period is discussed. The formation of two mature continental nuclei in early Proterozoic and the formation of North China craton