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本区位于冈底斯岩带中段,雅鲁藏布江板块构造俯冲带上,广泛发育有林子宗火山岩系,为一套安山质至流纹质的钙碱性系列的岛弧一陆缘型火山岩系,铷锶等值线年龄为88百万年,属于晚白垩世.与其伴生的曲水花岗岩基(狭义)和羊八井岩株,亦属于钙碱性系列,铷锶等值线年龄为59百万年,属于燕山晚期至喜马拉雅早期.羊八井北(即上述钙碱性岩系北面)容尼多一带出现
The area is located in the middle of the Gangdese rock belt and the braided subduction zone of the Brahmaputra plate. There are extensively developed Linzizong volcanic rock series, an andesite to rhyolitic calc-alkaline continental arc-continental volcanic series, The rubidium-strontium contours are 88 million years old and belonged to the Late Cretaceous, and the associated Qushui granite basement (narrow sense) and Yangbajing rock strain belong to the calc-alkaline series with the rubidium-strontium contours of 59 years Years, belonging to the early Yanshanian to the early Himalayas. Yangbajing North (that is, north of the above calc-alkaline rock)