摘要
本文报导了颗粒锆石U-Pb定年的各种影响因素:Ti和Ba的质量迭加、质量歧视效应和U的记忆效应。长时间U空白检验表明聚四氟乙烯闷罐经过浓HF和王水处理后,对于U有记忆效应,这种效应可以用稀的HBr清洗消除掉。文章最后以例说明了该方法的地质意义。
This paper reported the influence factors on single zircon crystal dating:the interference of T1 and Ba, the discrimination of mass, and the memory effect of U. The U blank testing for a long time indicates that the TEFLON bombs,treated with concentrated HP and aqua regia, possess the memory effect of U, Which could be eliminated by cleaning with dilute HBr. Finally its geological significance is illustrated in the paper.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
1989年第2期88-94,共7页
Acta Petrologica Sinica
