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通过对胶东地区基底长英质片麻岩的地球化学研究发现， 莱西－栖霞一带的基底长英质片麻岩具有太古宙长英质片麻岩的典型特征， 微量元素组成与板内花岗岩类相似。该区应该属于华北陆块的一部分。荣成地区是苏鲁超高压变质带的典型地区， 其基底长英质片麻岩与栖霞一带不同， 是过铝型花岗岩类， 具有火山弧花岗岩类的地球化学特征， 结合普遍存在的０．８Ｇａ 的同位素年代资料， 可以确定荣成地区原来是扬子陆块的一部分。文登－威海地区的长英质片麻岩的常量和微量元素组成都与栖霞地区相当， 很可能也是华北陆块的一部分。从长英质片麻岩代表的基底岩石的地球化学差异来看， 超高压变质带与华北板块的界线应该在五莲－青岛－荣成断裂。威海一带含柯石英超高压岩块的出现很可能是因为大陆碰撞过程中复杂的构造原因， 使超高压岩片中的一部分进入了华北基底分布区。
Based on the geochemical study of basement-hosted gneisses in the Jiaodong area, it is found that the basement-hosted gneisses in the Lacey-Qixia area have the typical characteristics of Archean felsic gneisses. The trace element composition is similar to the intraplate granite Similar category. The district should belong to the North China landmass part. The Rongcheng area is a typical area of the Sulu UHP metamorphic belt. Its basement-hosted gneisses are different from Qixia and are peraluminous granitoids with geochemical characteristics of volcanic arc granitoids. Combined with the prevalence of 0.8Ga isotopes Age information, you can determine Rongcheng area was originally part of the Yangtze block. The Wendeng-Changhai gneisses in the Weihai area have similar constants and trace element compositions to the Qixia area and are probably also part of the North China block. From the geochemical differences of the basement rocks represented by the feldspathic gneiss, the boundary between the UHP metamorphic belt and the North China plate should be in the Wulian-Qingdao-Rongcheng fault. The occurrence of coesite ultrahigh-pressure rocks in the Weihai area is likely to be due to the complicated structural causes during the continental collision, causing some of the ultra-high pressure rock fragments to enter the North China basement.