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1982年9月7日—15日在加拿大安大略省休伦湖北面的萨得伯里地区举行了 IGCP179项的1982年工作会议。在这个会议上,澳大利亚的 Mclennan 作了关于利用稀土元素地球化学方法。以西澳大利亚为实例讨论元古和太古分界的报告。大量的数据和图表表明这是一项很有意义的工作,引起了与会者颇大兴趣。Mclennan 主要是利用稀土元素(REE)的总含量丰度(∑REE)和铕比值(Eu/Eu′,已用球粒陨石标准化的)以及轻、重稀土元素的比值,讨论了太古和元古的分界问题。从西澳和加拿大休伦超群的分析结果表明,太古沉积岩(>26亿年)的丰度低
Sept. 17-15, 1982 The 1982 Working Session on IGCP179 was held in the Saderbury, north of Lake Huron, Ontario, Canada. At this conference, Mclennan of Australia made a lecture on the use of REE geochemistry. Western Australia as an Example to Discuss Proterozoic and Archean Demarcation Report. A lot of data and graphs show that this is a very meaningful work, which aroused great interest among the participants. Mclennan mainly used the ratio of abundance of REE (ΣREE) and europium (Eu / Eu ’, which has been normalized by chondrite), and the ratio of light and heavy rare earth elements, discussed the relationship between the Archean and Proterozoic The issue of demarcation The analysis of the Huron example from Western Australia and Canada shows that the abundance of the Archean sediments (> 2.6 billion years) is low