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通过３０个组合样品的分析，研究了华北克拉通古元古代到第三纪的碎屑沉积岩地球化学变化．结果表明，华北克拉通后太古宙沉积岩组成并不均一．元古宙沉积岩组成变化范围较大，元古宙以后的沉积岩Ｅｕ／Ｅｕ，ｗ（Ｃｒ）／ｗ（Ｔｈ），ｗ（Ｓｃ）／ｗ（Ｔｈ）和ｗ（Ｓｍ）／ｗ（Ｎｄ）等元素质量分数比值较低，具有后太古宙沉积岩的典型特征．三叠纪泥质岩的上述元素比值明显增大，相容元素质量分数很高，表明其源区有较多镁铁质组分加入．作者将这一变化归因于三叠纪华北克拉通和扬子克拉通发生的陆－陆碰撞作用．碰撞过程中秦岭－大别造山带深部地壳的镁铁—超镁铁岩大量出露，随后被剥蚀、搬运至华北克拉通的沉积盆地内．
The geochemical changes of clastic sedimentary rocks from Paleoproterozoic to Tertiary in the North China Craton were studied through the analysis of 30 composite samples. The results show that the composition of sediments in the Archean after the North China Craton is not uniform. The Paleozoic sedimentary rocks have a wide range of variation in composition. After the Proterozoic, the Eu / Eu *, w (Cr) / w (Th), w / Sc and w / And other elements of the lower mass fraction ratio, with the typical features of late Archean sedimentary rocks. The ratio of the above elements in the Triassic argillaceous rocks is obviously increased, and the mass fraction of compatible elements is high, indicating that more mafic elements are added in the source area. The authors attributed this change to the continental-continental collision in the Triassic North China craton and the Yangtze craton. During the collision, a large amount of mafic-ultramafic rocks in the deep crust of the Qinling-Dabaoye orogenic belt were exposed and subsequently denuded and transported to the sedimentary basin of North China Craton.