The paper reports geochemical, geochronological (ID–TIMS zircon U–Pb) and isotope–geochemical (Nd, Pb) study of granitoids of the Kodar complex developed in the western part of the Aldan shield. It has been established that these rocks can be classified as postcollisional A–type rapakivi granites, which together with the mafic–ultramafic rocks of the Chinei complex compose a single magmatic association formed within 1876 ± 4–1859 ± 2 Ma. The massifs of this association are a part of the giant South Siberian magmatic belt over 2500 km in length, which was formed at the final stage (1.88–1.84 Ga) of evolution of the Paleoproterozoic orogen. Globally, this belt is the largest stitching suture, which marks the formation of the Siberian craton and its entrance into the Paleoproterozoic Nuna supercontinent. The formation of the initial magmas of the Kodar granitoids was related to the mantle–crustal interaction during the mixing of primary mafic mantle magmas or their derivatives with anatectic melts derived through partial melting of the Archean lower continental crust of the region under the thermal influence of mafic magma. The crustal component in the source clearly predominates and has a heterogeneous nature. The mantle component is mainly represented by ancient enriched mantle, with the possible contribution of the OIB–type component.

该论文报道了在Aldan盾构西部开发的Kodar复合体的花岗岩类的地球化学，年代学（ID–TIMS锆石U–Pb）和同位素–地球化学（Nd，Pb）研究。已经确定这些岩石可以归类为碰撞后的A型拉帕基维花岗岩，它与Chinei复杂的镁铁质-超镁铁质岩石一起构成1876±4–1859±2 Ma范围内形成的单个岩浆组合。该协会的地块是长2500公里的南西伯利亚岩浆带的一部分，该岩浆带形成于古元古代造山带演化的最后阶段（1.88-1.84 Ga）。在全球范围内，该带是最大的缝合线，标志着西伯利亚克拉通的形成及其进入古元古代努纳超大陆的入口。Kodar花岗岩类初始岩浆的形成与原始镁铁质地幔岩浆或它们的衍生物与由该地区的太古宙下部大陆壳在热影响下部分融化而产生的南极熔体混合过程中的地幔-地壳相互作用有关。镁铁质岩浆。震源中的地壳成分显然占主导地位，并且具有异质性。地幔成分主要由古代富集的地幔代表，其中OIB型成分可能具有贡献。震源中的地壳成分显然占主导地位，并且具有异质性。地幔成分主要由古代富集的地幔代表，其中OIB型成分可能具有贡献。震源中的地壳成分显然占主导地位，并且具有异质性。地幔成分主要由古代富集的地幔代表，可能是OIB型成分的贡献。