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文章在对吐哈盆地十红滩层间氧化带型砂岩铀矿床地下水和粘土矿物的氢、氧同位素,钙质砂岩的碳、氧同位素,黄铁矿和长石的铅、硫同位素组成进行分析测试的基础上,系统总结了矿床的地球化学特征;认为形成层间氧化带和铀矿化的层间水主要来自大气降水,研究区水与有机烃类气体同位素交换、强烈的蒸发作用和水岩反应是控制地下水和矿物中同位素分馏的主要机制,层间氧化带和铀富集成矿是地下水在低温、常压下对围岩长期作用的结果,钙质砂岩的碳和黄铁矿的硫均主要为生物有机成因,盆地深部的煤成油、气也参与了成矿作用。
In this paper, the isotope composition of lead and sulfur in carbon, oxygen isotopes, pyrite and feldspar of groundwater and clay minerals in hydrogen and oxygen isotopes of calcareous sandstone and groundwater of Shihongtan interlayer oxidation zone sandstone uranium deposit in Turpan-Hami basin Based on the test results, the geochemical characteristics of the deposit are systematically summarized. It is considered that the interlayer water forming interlayer oxidation zone and uranium mineralization mainly comes from atmospheric precipitation, the isotope exchange of water and organic hydrocarbon gas in the study area, intense evaporation and water Rock reaction is the main mechanism controlling isotope fractionation in groundwater and minerals. The interlayer oxidation zone and uranium enrichment mineralization are the result of the long-term action of groundwater on the surrounding rock at low temperature and pressure. The carbon of the calcareous sandstone and the sulfur of the pyrite Are mainly bio-organic causes, deep coal in the basin oil, gas is also involved in the mineralization.