摘要
对铜矿峪火山岩进行常量元素、微量元素及稀土元素研究表明,SiO2质量分数为47.22%～76.00%,平均66.21%,Al2O3含量为11.03%～20.03%,属铝饱和类型。通过常量元素投点图分析,属一种高钾系列火山岩。稀土元素特征表明,火山岩的源岩浆来源于上地慢。在微量元素的球粒陨石标准化图上,表现为不相容元素Rb、K、Ba、Th的高度富集,同时,具有Sr、Tb和Nb、Ti的亏损,其总体配分型式类似于板内拉斑玄武岩。
The study indicates that the volcanic rock from the Tongkuangyu Cu deposit in Zhongtiaoshan, Shanxi is rich in K series of Al-saturated type with SiO2 of 47.22-76.00%, A1203 of 11.03-20.03 %. The REE geochemistry indicates that the magma was derived from the upper mantle. The minor element geochemistry is characterized by enrichment in Rb, K, Ba and Th and depletion in Sr, Tb, Nb and Ti, which is characterized by intraplate tholeiite.
出处
《四川地质学报》
2013年第2期240-243,246,共5页
Acta Geologica Sichuan
关键词
铜矿
火山岩
地球化学
中条山
volcanic rock
geochemistry
Tongkuangyu copper deposit
Zhongtiaoshan
