冀北隐伏火山热液型铀矿地表地球化学异常
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Surface geochemical anomalies of concealed volcanic hydrothermal uranium deposit in northern Hebei
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图5. 大官厂火山热液型铀矿床土壤剖面瞬时氡、210Po及活动态铀折线 |
Fig.5. Line chart of soil gas Rn, 210Po concentration and mobile-state uranium concentration in soil profile |
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