【摘要】 报道了应用重液变温分离法分离白云母、黑云母、透长石和石英等单矿物,进行铷锶等时线年龄测定的研究结果。这些结果表明,同一单矿物具有微小比重差的组分,其Rb、Sr同位素比值具有明显的线性展布,在铷锶年代学研究中具有良好的应用前景和潜力。更多还原

【Abstract】 The heavy liquid separation with temperature changing has been applied to separate minerals of muscovite, biotite, sanidine and quartz to obtain several fractions with respect to specific gravity difference. All of them were dated by conventional Rb-Sr isochron method. The results obtained indicate that although the difference in specific gravity between the mineral fractions was slight, the Rb-Sr isotopic ratios apparently showed a linear spread. The results suggest that the technique should find further applications in Rb-Sr geochronology.更多还原