同位素年代学中本底污染对年龄数据的影响  

THE EFFECT OF BACKGROUND POLLUTION ON AGE DATA IN ISOTOPE CHRONOLOGY

作　　者：刘培伦 

出　　处：《铀矿地质》1991年第3期183-188,共6页Uranium Geology

摘　　要：本文以Rb-Sr法为例,给出了本底Sr和Rb都有污染时对年龄影响的计算公式。并对不同程度的影响作了一些定量的估计。本文的公式还解释了经常出现于Rb-Sr等时年龄测定工作中数据不稳定的这种不易控制的现象。本文的方法也可用于其他同位素年代学方法中。As examplified by the Rb-Sr age method, this paper has given a calculating formula showing the effect of Sr and Rb background on ages when they were polluted. Some quantitative estimation was made of the effect in different degree. From the formula in this paper, the uncontrollable phenomenon of unstable data measuring results often appearing in Rb--Sr isochron dating was also explained. The method mentioned in the present paper can be also used for other methods of isotope chronology.

关 键 词：同位素 年代学 本底 污染 年龄数据 

分 类 号：P597[天文地球—地球化学]