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 ℃.