Granitoids of the Uda complex are developed within the southeastern marginal part of the Siberian craton and its folded framework. Geochemical, isotope–geochemical (Nd and Sr), and geochronological (U–Pb ID–TIMS) studies of a number of massifs of this complex were carried out for the Chogar granulite block of the Dzhugdzhur–Stanovoi superterrane. It was found that the massifs were formed during the Early Jurassic (181 ± 2 Ma) under the geodynamic conditions of the active continental margin. The initial magma of these granitoids originated from a mixed source consisting of the Early Precambrian lower crust and the mantle. There is a reason to believe that the granitoids of the Uda complex in the Chogar block constitute the southwestern edge of the Uda–Murgal magmatic arc formed under subduction, which extends along the border of the Paleo-Asian Ocean and the Siberian continent.

中文翻译：

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乌达-穆尔加尔岩浆弧西南端乌达杂岩的早侏罗世超俯冲花岗岩：年龄和来源的新数据

Uda 杂岩体的花岗岩类发育在西伯利亚克拉通及其折叠框架的东南边缘部分。对该复合体的许多地块进行了地球化学、同位素地球化学（Nd 和 Sr）和地质年代学（U-Pb ID-TIMS）研究，用于 Dzhugdzhur-Stanovoi 超级地体的 Chogar 麻粒岩块。发现地块形成于早侏罗世（181±2 Ma），在活动大陆边缘的地球动力学条件下。这些花岗岩的初始岩浆来源于早前寒武纪下地壳和地幔的混合源。有理由相信乔加尔地块中乌达杂岩的花岗岩类构成了俯冲作用下形成的乌达-穆尔加尔岩浆弧的西南边缘，