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对西藏阿里地区马攸木金矿床含金石英脉样品进行40Ar/39Ar快中子活化法测年,其坪年龄为44.08Ma±0.39Ma,等时年龄为44.10Ma±0.20Ma,坪年龄代表石英的形成年龄。测试结果表明,西藏阿里地区可能存在喜马拉雅期金的成矿作用,且喜马拉雅期可能是西藏冈底斯-雅鲁藏布江成矿带形成金矿的主要时期。
The 40Ar / 39Ar fast neutron activation method was used to measure the gold-bearing quartz veins of the Mayoumu gold deposit in the Ali area, Tibet. The plateau age was 44.08Ma ± 0.39Ma and the isochronous age was 44.10Ma ± 0.20Ma. The plateau age represented the formation of quartz age. The test results show that the Himalayan gold mineralization may occur in the Ali area of Tibet, and the Himalayan period may be the main period for the gold formation in the Gangdise-Brahmaputra metallogenic belt in Tibet.