东天山岩浆活动在晚石炭世至早二叠世达到高峰，是研究中亚造山带古亚洲洋闭合和地壳生长的典型地区。然而，其构造背景和地壳生长的方式并没有得到很好的制约。由于岩浆源区和成因机制的差异，形成于不同构造背景的埃达克岩通常显示不同的岩石学、矿物学及地球化学特征。因此，有关埃达克岩源区特征和成因机制的详细研究对反演区域构造环境和探讨地壳生长方式具有重要意义。由于目前缺乏对东天山晚石炭–早二叠世这一关键时期埃达克岩的报道和详细研究，限制了对东天山该时期地球动力学机制和地壳生长方式的有效厘定。本项研究以东天山康古尔带（晚石炭世）的埃达克岩为研究对象，拟开展系统的年代学、岩石学、矿物原位分析、主微量元素和Sr–Nd–O–B同位素研究。通过深入剖析这些岩石地球化学数据，查明其岩石源区特征和成因机制，进而探讨该时期东天山的构造背景，为阐明这一时期东天山的地球动力学背景和地壳生长模型提供制约。

The magmatic activity of Eastern Tianshan with peaks of ages at Late Carboniferous to Early Permian, is a typical area for studying the Paleo-Asian Oceanic closure and crustal growth in the Central Asian Orogenic Belt. However, the tectonic setting and crustal growth model of the Eastern Tianshan are not well constrained. Since the different source origin and petrogenesis, adakites formed in different tectonic setting show various petrologic, mineralogical, and geochemical characteristics. Hence, detailed research on the petrogenesis and source of the adakites is of great significance for discuss regional geological environment and crustal growth model. Because of there is a lack of reports and studies on adakites in the Eastern Tianshan at the key period of Late Carboniferous to Early Permian, hindered the understand of geodynamic and crustal growth model. This project focuses on the adakites from Kangguer belt, Eastern Tianshan (Late Carboniferous), with a comprehensive study including geochronology, petrology, mineralogy, major and trace element geochemical, and Sr–Nd–O–B isotopes. By parsing these geochemical data, to find out the source and genetic mechanism of the adakites, and restrict the tectonic setting, geodynamic background, and crustal growth model of Eastern Tianshan at this period.