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西藏革吉县躬穷左波复式岩体位于尕尔穷-嘎拉勒矿集区南约20 km处,构造位置隶属于班公湖-怒江缝合带与冈底斯北缘过渡部位西段。系统的剖面测量和路线调查工作表明,岩体呈狭长岩株状侵位于多爱组火山-沉积地层中,地表出露面积不足1 km2。岩体主要由早期的钾长花岗岩和晚期侵入的钾长细晶岩构成,局部可见到闪长岩和流纹岩。其中,钾长细晶岩主要呈脉状穿插于钾长花岗岩中,脉体宽不到5 m,南东-北西走向,与钾长花岗岩侵位关系明显。钾长细晶岩为肉红色,块状构造,主
The Gongwo poetic left-wave compound rock in Geji County, Tibet is located about 20 km south of the Qur’er-Galala concentrator area and belongs to the western segment of the transitional zone between the Bangong-Nujiang suture and the northern margin of Gangdise. System profile surveys and route surveys show that the rock mass is intrusion in the volcanic-sedimentary stratum of the Ai’ai Formation in the form of narrow-line rock, and the surface exposed area is less than 1 km2. The rock mass is mainly composed of early K-bearing granite and later intruding K-progranite, with diorites and rhyolites locally visible. Among them, the k-progranite is mainly vein-intercalated into the potash-bearing granite. The veins are less than 5 m in width and the southeastern-northwesterly strike has a clear relationship with the emplacement of the potash-bearing granite. Potassium feldspar red meat, massive structure, the main