摘要
Ｌｕ－Ｈｆ同位素方法已趋成熟，主要得益于其化学方法的极大改进和与之配套的高电离率质谱仪的使用。Ｌｕ－Ｈｆ同位素方法在地球的早期性质研究中表明，部分古太古代片麻岩Ｓｍ－Ｎｄ同位素体系所记录的早期地幔的“极度”亏损，实际是对其同位素体系热扰动的反映；关于大陆地壳的生长模式。
Lu Hf isotope method has been well developed in recent years due to the improvement in its chemical process in laboratory and the employment of high ionization mass spectrometers.Lu Hf isotope applications in the researches of early geological history show that the geothermal event disturbing after initial intrusion resulted in the “extremely depleted” feature for some Paleo Archean rocks recorded by their Sm Nd isotopic system;the Lu Hf isotope of zircon in Precambrain quartzites prefers a pulse accretion model for the growth of continental crust in the geological history.
出处
《地质科技情报》
CAS
CSCD
北大核心
1999年第1期79-84,共6页
Geological Science and Technology Information
基金
国家自然科学基金
中国地质大学"211工程"基金
"壳幔体系组成
物质交换及动力学开放研究实验室"基金
关键词
Lu-Hf法
地质应用
同位素体系
石英岩
地质年代
Lu Hf method,geological application,early evolution of the Earth,new constraints
