The distribution of trace elements in carbonaceous chondrites
The distribution of trace elements in carbonaceous chondrites
复制标题
碳质球粒陨石中微量元素的分布
DOI：
10.1016/0016-7037(81)90285-4
复制
发表时间：
1981
影响因子：
5
通讯作者：
H. Knab
中科院分区：
文献类型：
--
作者：
H. Knab
摘要利用火花源质谱结合同位素稀释法对12种代表了几乎所有已知岩石学类型的碳质辉长岩进行了20种微量元素的分析。不同元素组（难熔、中等挥发和挥发）的数据表明，除Renazzo外，碳质辉长岩中微量元素的分布可以用Anders的双组分模型很好地解释。这也适用于高度变质的CV5球粒陨石Karoonda。此外，还观察到碳质辉长岩中的Zr Hf比随岩石类型的增加而增加，这被解释为具有不同Zr Hf比的两种组分混合的结果
Abstract 12 carbonaceous chondrites, amongst them representatives of nearly all known petrologic types were analyzed for twenty trace elements by spark source mass spectrography combined with the isotope dilution method. Data on different element groups (refractory, moderately volatile and volatile) show that the distribution of the trace elements in the carbonaceous chondrites, with the exception of Renazzo, can be well explained by Anders' two-component model. This is also valid for the highly metamorphosed CV5 chondrite Karoonda. Furthermore, it is observed that the Zr Hf-ratios in the carbonaceous chondrites increase with increasing petrologic type which is interpreted as the result of mixing two components with different Zr Hf-ratios