• 责任者：Zhang Yuqing (Inner Mongolia Institute of Geological Survey ; Hohhot 010020 ; China)
• 刊名：Acta Petrologica et Mineralogica
• 出版年：2009
• 卷期：28(4)
• 关键词：花岗闪长岩 ; granodiorites ; 埃达克岩 ; adakite ; 内蒙古 ; Inner Mongolia
• 页码：p.329-338
• 图表：7 illus., 5 tables, 41 refs.
• 分类号：0801
• issnNo：ISSN1000-6524
• isbnNo：CN11-1966/P

///Permian adakitic granodiorite and quartz-diorite in Bayinwula of Sonid Left Banner are distributed on the northern side of the Erlian-Hegen Mountain ophiolite zone. The 1:200 000 regional geological survey has assigned it to Late Variscan intrusive mass (γδ4(3)). Studies show that the rocks have characteristics of high aluminum (Al₂O₃=13.69%～16.48%), higher sodium (Na₂O=3.53%～4.58%), lower potassium (K₂O=2.12%～4.10%) and higher strontium (Sr=425.1×10^-6～645.2×10^-6), SiO₂=62.13%～72.87%, Y<18×10^-6(7.23×10^-6～14.29×10^-6), δEu=0.71～0.83. The fractionation of light-weight thulium is sharp and the partition curve of thulium forms a right-oblique model. Europium anomaly is not conspicuous, suggesting typical adakitic rock.