Determination of Early Paleozoic TTG Intrusive Rock and Its Tectonic Significance in Altay Orogen
详细信息
- 责任者：Zhao Tongyang (Geological Research Academy of Xinjiang ; Urimqi 830000 ; China) ; Qu Xun
- 刊名：Xinjiang Geology
- 出版年：2012
- 卷期：30(2)
- 关键词：侵入体 ; intrusions ; 蛇绿岩 ; ophiolite ; 阿尔泰山 ; Altai Mountains
- 页码：p.165-171
- 图表：3 illus., 3 tables, 30 refs.
- 分类号：0801
- issnNo：ISSN1000-8845
- isbnNo：CN65-1092/P
摘要
///The use of standard classification system for TTG rock mineral identification, the results show that in the Late Paleozoic （416~462 Ma） exist tonalite-trondhjemite-granodiorite combination and tonalite-trondhjemite-granite combination. The rock combination with magnesium rich, calcium and alkaline poor characteristics, the relative enrichment of Rb, Th, La, Ce, Nd, Zr, Hf, Ba, Sr, P, Nb strongly losses. （La/Yb)N ratio of 4.61 to 5.69, with higher levels of light rare earths fractionation, plate before collision （subduction period） granite. And Mongolia Early Paleozoic intrusive magma tectonic belt GG combination, which indicates the oceanic crust subduction direction of TTG-GG rock assemblage zone of magma.