东胜砂岩型铀矿形成中天然气地质作用的地球化学特征

doi:10.11743/ogg20060213

摘要/Abstract

摘要：

天然气包裹体的观察测试、流体温度测试以及后生蚀变形成的矿物学和地球化学性质、包裹体氢氧稳定同位素的示踪、油气充注与铀成矿年龄的对比等研究表明,东胜矿床漂白现象和绿色后生蚀变以及铀矿化的形成主要与天然气地质作用有关,天然气为上古生界来源的煤成气。主要的铀成矿还原剂是CH4等有机烃类气体及部分CO,H₂S和H₂等。因此,东胜铀矿的成因主要与天然气地质作用有关。

关键词: 砂岩型铀矿, 天然气, 地球化学, 后生蚀变, 还原剂

Abstract:

Observation and testing of gas inclusion,fluid temperature,mineralogy and geochemical behaviors of minerals from epigenetic alteration,tracing of inclusion's hydrogen and oxygen stable isotopes,and correlation of oil/gas charging and uranium mineralization phases indicate that the bleaching phenomena and green epigenetic alteration,as well as uranium mineralization in Dongsheng deposit are mainly related with geologic process of natural gas.The natural gas is mainly of humic gas from the Upper Paleozoic.The main reducing agents for uranium mineralization are organic hydrocarbon gas,such as CH₄,and some CO,H₂S and H₂.Therefore,the genesis of Dongsheng Uranium deposit is mainly related with geologic process of natural gas.

Key words: sandstone-type uranium deposit, natural gas, geochemistry, epigenetic alteration, reducing agent

中图分类号:

TE112.1

吴柏林,王建强,刘池阳,等. 东胜砂岩型铀矿形成中天然气地质作用的地球化学特征[J]. 石油与天然气地质, 2006, 27(2): 225-232. doi: 10.11743/ogg20060213 Wu Bolin,Wang Jianqiang,Liu Chiyang,et al. Geochemical behavior of geologic process of natural gas during mineralization of Dongsheng sandstone-type uranium deposit[J]. Oil & Gas Geology, 2006, 27(2): 225-232. doi: 10.11743/ogg20060213

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