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前言自从理查兹和怀特(1965)发表评论同位素地质年令在找矿中的应用方面的文章以来的十多年里,澳大利亚同位素年令组的数字增加了四倍。从世界范围看,对已知矿床的同位素年令解释已取得了明显的进展。与此相反,那些没有进行同位素测定的地区,现在仍同过去一样,还存在着很多问题。十年前的地层学方法被认为是正统的方法,地质学家时常希望把矿化作用正确地置于区域地质年代顺序范围内,可是在许多情况下,只有采用推断的方法才能作到。然而
INTRODUCTION The Australian Isotope Ensemble season figures have more than quadrupled since the article by Richards and White (1965) commenting on the application of isotopic geology in prospecting. From a global perspective, significant progress has been made in explaining the isotopic year of known deposits. In contrast, there are still many problems in those areas where isotope determination has not been carried out, as they were in the past. Stratigraphy methods ten years ago are considered orthodox methods, and geologists often wish to place mineralization correctly within the regional sequence of geochronology, but in many cases only inferential methods can be used. however