论文部分内容阅读
在雅鲁藏布江—噶尔河一线以南,中印、中不、中锡和中尼边境以北的我国境内喜马拉雅地区,广泛出露着第三纪花岗岩类。它们以中-小型的岩体为主,零星断续地大致沿着喜马拉雅山系的总走向分布,构成一条范围广阔延伸千余公里的喜马拉雅第三纪花岗岩带。根据岩体的地质特征和岩石类型又可将该岩带分为二个带:高喜马拉雅电气石白云母花岗岩带和藏南低分水岭片麻状二云母花岗岩带。据现有的同位素地质资料,这两
The Tertiary granites are widely exposed in the Himalayas of our country to the north of the Brahmaputra-Garh River, in the Himalayas to the north of China, India, Central Africa, China, and Nepal. They are mainly medium-small rock mass, sporadically intermittently roughly along the Himalayas, the general trend of distribution, constitute a vast extension of more than 1000 kilometers of the Himalayas Tertiary granite belt. According to the geologic characteristics and rock type of the rock mass, the rock belt can be divided into two zones: the high-Himalayan tourmaline-mica-micaceous granite belt and the low-waterside schist-hosted ductile zone in southern Tibet. According to the available isotopic geological data, both