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加拿大地质调查局应用航空γ能谱测量的结果对三个地区的花岗岩体进行了研究,其目的是为了确定已知铀矿床的铀是否来源于这些岩体。埃利奥特湖地区的太古代岩体出露面积约30×20平方公里,该区产有闻名世界的砾岩型铀矿床。福特·史密斯岩体为一南北向条带,长200公里,宽50公里。富雷和海克拉研究区为一直径30公里的岩体。后两者与脉型和浸染型铀矿床有关。研究结果表明,若U含量和U/Th比值增高,而钍值不高,则说明铀在岩浆期后发生
The results of aeronautical gamma spectrometry measurements conducted by the Canadian Geological Survey conducted a study of granite bodies in three areas to determine whether uranium from known uranium deposits originated from these rock masses. The Archean area of Eliot Lake area exposed rock area of about 30 × 20 square kilometers, the area has a world-renowned conglomerate-type uranium deposit. Ford Smith rock is a north-south strip, 200 km long and 50 km wide. The Fray and Hekla study areas are 30 kilometers in diameter. The latter two are related to vein type and disseminated uranium deposits. The results show that, if the U content and U / Th ratio increased, while the thorium value is not high, then uranium occurred after the magma period