摘要
一、普通铅同位素年龄的地质意义目前,在多金属矿床成矿年龄测定中,普通铅同位素年龄仍具有重要的意义。这不仅因为普通铅同位素年龄测定用的矿石铅或岩石铅样品比较容易获得,测试方法也相对简单,而且通过一个样品的铅同位素数据同时获得几组年龄值,可以相互检验。虽然也可采用 K—Ar法和R b—Sr 等时线法及 U、Tn—Pb 法等放射性同位素测定成矿年龄。
In recent years,the thorough study on geochemical basic theory of lead isotope and increasing of measured precision of it resulted in a new break- through on the range and quality of geological study of lead isotope,becoming an available approach for researching all kinds of geological process,particu- larlly playing an active role in the study of geology and ore deposit. With the accumulation of lead isotopic information,the thorough study of lead isotopic geology is influenced by the simplified tendency of application and interpretation of lead isotopic data.Combining some experience in practical work with actural examples at home and abroad,the author mainly describes the application of the lead isotopic data to the research on metallogenic epoch, genesis of ore deposits and the material sources,and the prospecting for ore deposits.
出处
《吉林地质》
1989年第1期46-55,共10页
Jilin Geology
