| Trace Element Geochemistry of Tertiary Continental Alkali Basalts from the Liuhe—Yizheng Area,Jiangsu Province,China |
| |
| 引用本文： | 支霞臣.Trace Element Geochemistry of Tertiary Continental Alkali Basalts from the Liuhe—Yizheng Area,Jiangsu Province,China[J].中国地球化学学报,1991,10(3):204-216. |
| |
| 作者姓名： | 支霞臣 |
| |
| 作者单位： | UniversityofScienceandTechnologyofChina,Hefei |
| |
| 摘 要： | Reported in this paper are the chemical compositions and trace element (REE,Ba,Rb,Sr,Nb,Zr,Ni,Cr,V,Ga,Y,Sc,Zn,Cu,etc)abundances of Tertiary continental alkali basalts from the Liube-yizheng area,Jiangsu Province,China.The olivine basalt,alkali olivine basalt and basanite are all derived from evolved melts which were once af-fected by different degrees of fractional crystallization of olivine and clinopyroxene(1:2)under high pres-sures.The initial melts were derived from the garnet lherzolite-type mantle source through low-degree par-tial melting.The mantle source has been affected by recent mantle-enrichment events(e.g.mantle metasomatism),resulting in incompatible trace element enrichment and long-term depletion of radiogenic isotopic compositions of Sr and Nd.
|
| 关 键 词： | 示踪元素地球化学 第三纪 江苏 碱性玄武岩 富集作用 地幔 锶 钕 |
Trace element geochemistry of tertiary continental alkali basalts from the Liuhe-Yizheng area,Jiangsu Province,China |
| |
| Zhi Xiachen.Trace element geochemistry of tertiary continental alkali basalts from the Liuhe-Yizheng area,Jiangsu Province,China[J].Chinese Journal of Geochemistry,1991,10(3):204-216. |
| |
| Authors: | Zhi Xiachen |
| |
| Institution: | (1) University of Science and Technology of China, Hefei |
| |
| Abstract: | Reported in this paper are the chemical compositions and trace element (REE.Ba > Rb, Sr, Nb, Zr, Ni, Cr, V, Ga, Y, Sc, Zn,
Cu. etc.) abundances of Tertiary continental alkali basalts from the Liuhe-Yizheng area, Jiangsu Province, China.
The olivine basalt, alkali olivine basalt and basanite are all derived from evolved melts which were once affected by different
degrees of fractional crystallization of olivine and clinopyroxene (1:2) under high pressures. The initial melts were derived
from the garnet lherzolite-type mantle source through low-degree partial melting. The mantle source has been affected by recent
mantle-enrichment events (e. g. mantle metasomatism), resulting in incompatible trace element enrichment and long-term depletion
of radiogenic isotopic compositions of Sr and Nd. |
| |
| Keywords: | |
| 本文献已被 维普 SpringerLink 等数据库收录！ |
|
