Implications of Zr/Hf Fractionation in the Ertan High-Ti Basalt
详细信息
- 责任者：Yan Zaifei (State Key Laboratory of Ore Deposits Geochemistry ; Institute of Geochemistry ; Chinese Academy of Sciences ; Guiyang 550002 ; China) ; Cheng Lijun
- 刊名：Acta Mineralogica Sinica
- 出版年：2011
- 卷期：31(1)
- 关键词：玄武岩 ; basalts ; 锆 ; zirconium ; 铪 ; hafnium ; 峨眉山 ; Mount Emei
- 页码：p.36-42
- 图表：5 illus., 2 tables, 58 refs.
- 分类号：0801
- issnNo：ISSN1000-4734
- isbnNo：CN52-1045/P
摘要
Variations of high-field strength element (HFSE) of the Ertan high-Ti basalts in the Emeishan suggest that Zr/Hf ratios were fractionated. According to the fractionation, the Ertan high-Ti basalts can be devided into high Zr/Hf group and low Zr/Hf group based on Zr/Hf ratios. The fractionation of Zr/Hf is not related with crystallization of basaltic magmas but partial melting and distinct compositions of mantle. This implies that high Zr/Hf basalt and low Zr/Hf basalt possessed distinct compositions of mantle and underwent different surroundings of partial melting,respectively.