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内蒙古索伦山地区是中亚造山带构造演化的关键区域，其中关于古亚洲洋的闭合时限以及西伯利亚板块和华北板块的拼贴时空关系一直存在争议。出露于内蒙古索伦山地区哈尔博格托尔的中酸性侵入岩，其深入研究对探讨古亚洲洋演化具有重要意义。文中对内蒙古索伦山地区哈尔博格托尔TTG岩进行了系统的岩石学、年代学及地球化学研究。获得哈尔博格托尔TTG岩的LAICPMS锆石UPb年龄为(266.7±3.7) Ma，表明该侵入岩形成于中二叠世。地球化学主量元素分析表明，索伦山地区哈尔博格托尔TTG岩的岩石系列主要为含钠较高的钙碱性准铝质系列。其稀土元素总量较低，呈现轻稀土元素(LREEs)相对于重稀土元素(HREEs)弱富集的特征，Eu异常不明显；微量元素呈现Rb、Ba、Th、U等大离子亲石元素富集，Nb、Ta、Ti等高场强元素强烈亏损的特征，与典型的岛弧岩浆岩类似。结合索伦山TTG岩体地质特征和区域地质背景，综合年代学和地球化学特征分析，笔者认为索伦山地区哈尔博格托尔TTG岩体形成于岛弧环境，即中二叠世期间古亚洲洋壳向华北板块还存在俯冲作用，因而古亚洲洋至少应在中二叠世以后才闭合。内蒙古索伦山地区哈尔博格托尔TTG岩是洋壳俯冲的岩石学记录，为索伦山缝合带及古亚洲洋构造域演化提供了新的基础地质资料。
The Sauron area in Inner Mongolia is a key area for the tectonic evolution of the Central Asian orogenic belt. There is controversy over the time-closure of the closure of the Paleo-Asian Ocean and the time-space relationship between the Siberian plate and the North China plate. Exposed to moderately acidic intrusive rocks in Halbergortal, in the Sauron region of Inner Mongolia, further studies are of great significance to the evolution of the Paleo-Asian Ocean. In this paper, we systematically studied the petrology, geochronology and geochemistry of the Halberghoter TTG rocks in the Sorrento region, Inner Mongolia. The LAICPMS zircon UPb age of the Hunburg Gator TTG rocks was (266.7 ± 3.7) Ma, indicating that the intrusive rocks were formed in the Middle Permian. Elemental analysis of major elements of geochemistry shows that the rock series of the TTG rocks in the Halberghoter area in the Sauron area are mainly calc-alkaline quasi-aluminum series with high sodium content. The total rare earth elements (REEs) are low, showing the weak enrichment of LREEs relative to heavy rare earth elements (HREEs). The Eu anomalies are not obvious. The trace elements such as Rb, Ba, Th, U and other large ion lithophile The characteristics of intense depletion of high field strength elements such as enrichment, Nb, Ta and Ti are similar to the typical island arc magmatic rocks. Combined with the geological characteristics, regional geological background, integrated geochronology and geochemical characteristics of the TTG rock mass in the Suolun Mountains, the authors believe that the Halburgol TTG rock mass formed in the island arc environment during the period of the Middle Permian The subduction of the oceanic crust to the Huabei plateau also occurred in the ancient Asia. Therefore, the paleo-Asian Ocean should be closed at least after the Middle Permian. The Halberghoter TTG rocks in the Sauron region of Inner Mongolia are petrological records of oceanic crust subduction, which provide new basic geological data for the evolution of the Soleil Mountain suture zone and the Paleo-Asian ocean tectonic domain.