阿尔泰造山带岩石和矿石的氩同位素研究

通过对新疆阿尔泰造山过程中形成的岩石、矿石样品氩同位素组成的研究 ,认为阿尔泰造山带的形成与壳幔相互作用有关 ,造山过程中的地幔脱气现象是存在的。喀拉通克铜镍硫化物矿床的成矿物质主要来自于地幔。可可托海 3 脉伟晶岩型超大型稀有金属矿床的成矿物质及基性超基性岩的母岩浆主要也来自于地幔。而大喀拉苏花岗岩结晶分异型伟晶岩矿床与库威变质型伟晶岩矿床的成矿物质来自于地壳 ,将军山天河石花岗岩与富蕴县城附近的含铜石英脉也主要是地壳物质演化的结果

ARGON ISOTOPIC STUDY OF ROCK AND ORE FROM THE ALTAY OROGENIC BELT

Argon isotopic composition of rock and ore formed during the orogenic process in Altay, Xinjiang, shows that the building of the Altay orogenic were related to crust-mantle interaction, and that mantle degassing was obviously existed. Ore-forming materials of the Kalatongke Cu-Ni sulfide deposit came from deep mantle source. The superlarge rare metal deposit hosted within the No.3 pegmatite vein in Keketuohai and the source magma of the basic-ultrabasic rocks hosting the No.3 Vein were also from a mantle source. By contrast the Dakalasu pegmatite deposit differentiated from granites and the Kuwei pegmatite deposit metamorphosed from hostrocks were resulted from crust source. The Jiangjunshan amazonite granite and the copper-bearing quartz veins located near the Fuyun County were also resulted from the crustal evolution.