华北克拉通具有3.8 Ga以上的演化历史,TTG是其地质记录的最重要载体。华北克拉通太古宙(特别是中太古代以前)地质演化在很大程度上与TTG岩石形成演化有关。在华北克拉通,始太古代(3.6~4.1 Ga)TTG岩石仅在鞍本地区被发现,虽 North China craton has an evolution history of more than 3.8 Ga, and TTG is the most important carrier of its geological records. The geological evolution of the North China craton, especially before the middle Archean, is largely related to the formation and evolution of the TTG rocks. In the North China Craton, the Eocene (3.6 ~ 4.1 Ga) TTG rocks were only found in the saddle area, though