横断山区位于青藏高原东部,包括昌都地区、川西和云南西半部。花岗岩类出露广泛,呈带状产出,与本区南北和北西向区域构造线一致。岩浆岩时代从前寒武纪的晋宁期到第三纪的喜马拉雅期;岩性从超基性、基性,中性到酸性和碱性岩石都有发育。 The Hengduan Mountains are located in the eastern part of the Qinghai-Tibet Plateau, including the Changdu area, western Sichuan and western Yunnan. Granites exposed a wide range, was banded output, consistent with the regional north-south and north-west structural line. The magmatic rocks from the Precambrian Jinning period to the Tertiary Himalayan period; lithology from the ultrabasic, basic, neutral to acidic and alkaline rock development.