Шивээнгол бүрдлийн геохими, геохронологийн шинэлэг үр дүнгээс
Keywords:
Нуурын бүс, шүлтлэг, анороген, өндөр цэнэгтэй элементүүдAbstract
The paper presents the latest geochronological and geochemical results on alkali granites of the Shiveengol complex, a Mesozoic alkali granitoid found of the Lake Fold System, in Western Mongolia. The granitoids are characterized by geochemical enrichment in large-ion lithophile elements (LILE) such as Rb, Nd, Th and U, and depletion in high-field strength elements (HFSE) such as Sr, Zr and Ti. Geochemically, it reveals similarities with A-type granites formed within plate settings. U–Pb dating results show that the absolute age of the syenite is 210.6±2.4 Ma, which is Late Triassic.
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