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乌拉乌苏地区的斜长角闪岩和德言其庙地区的斜长角闪岩变质较深，已达角闪岩相，两者在变质程度、空间展布型式以及岩石学、岩石化学和稀土配分型式上都十分相似，二者形成时代相近，应为同一套变质岩系，具有相同的形成环境和构造成因。样品的εＮｄ（ｔ）值反映了它们来源于中等亏损的地幔，稀土元素配分曲线呈平坦型，与之有关的幔源花岗岩在ＡＣＦ图解中投影在拉张区，具有拉张过渡壳特征。乌拉乌苏斜长角闪岩和德言其庙斜长角闪岩Ｓｍ—Ｎｄ同位素全岩等时线年龄分别为（６０７±４６）Ｍａ和（６３８±１４）Ｍａ，这表明华北地台北缘中段晚元古代－早古生代经历了拉张解体的演化阶段，Ｓｍ—Ｎｄ同位素等时线年龄代表了这一拉张解体演化的开始时间。
The amphibolite in the Ulawusu area and the amphibole amphibolite in the Deyanqiam area have metamorphosed deeply and have reached the amphibolite facies. They are characterized by metamorphic degree, spatial distribution, petrology, petrochemistry and geochemistry Rare earth with the type of patterns are very similar, both formed a similar era, should be the same set of metamorphic rocks, with the formation of the same environment and cause of the formation. The εNd (t) values of the samples indicate that they originate from the moderately depleted mantle, and the REE distribution curves are flat. The mantle-derived granites related to them are projected in the tension zone in the ACF plot and have the characteristics of a transitional transitional shell. The Sm-Nd isotopes of the Ulahisa amphibolite and the Deyanqiya plagioclase amphibolite are (607 ± 46) Ma and (638 ± 14) Ma, respectively, indicating that the northern margin of the North China Platform The middle Paleoproterozoic-Early Paleozoic experienced an evolutionary stage of extension and disintegration. The Sm-Nd isotope isochron age represented the start of this extension.