Sm-Nd and Rb-Sr isotopical ages of magnetite-chlorite formation gold deposit in the volcanic rock area of Late Paleozoic Era, East Tianshan

摘要

Through studying geo-geochemical characteristics and determining Sm-Nd and Rb-Sr isotopical ages in theKanggur magnetite-chlorite formation gold deposit, some conclusions can be achieved: Sm-Nd isochron age is(290.4±7)Ma, Rb-Sr isochron age is(282.3±5)Ma, mineralization is Late Hercynian and the formation of this gold deposit is related to the macro- scopic Huangshan-Qiugemingtashi ducltile shear zone which is produced as a result of collision between the Tarin plate and the Junggar plate.