Characteristics of Geochemistry and Zircon Hf Isotope of the Early Neoproterozoic Granite in Alax Area, oft-com:office:smarttags" />Inner Mongolia
详细信息
- 责任者：Geng Yuansheng (Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Zhou Xiwen
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(4)
- 关键词：花岗岩 ; granite ; 岩石地球化学 ; lithogeochemistry ; 铪同位素 ; hafnium isotopes ; 内蒙古 ; Inner Mongolia
- 页码：p.897-908
- 图表：7 illus., 3 tables, 38 refs.
- 分类号：0801
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The Early Neoproterozoic deformed granites in Alax area of Inner Mongolia are characterized by high SiO2, alkali (Na2O + K2O) and REE, low Al2O3, CaO, MgO, FeOT, K2O > Na2O, and intensely negative Eu abnormality. Above characteristics in whole-rock geochemistry and zircon Hf isotope of the deformed granites indicate that the parental magma of the granites was derived from partial melting of the older materials that were long residence in the crust. Zircon Ti thermometer of a sample AL0817-2 reveals that these granites were crystallized at ca. 825 ℃.