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详细信息
- 责任者：Zhu Zhimin (Guangzhou Institute of Geochemistry ; Chinese Academy of Sciences ; Guangzhou 510640 ; China) ; Zhao Zhenhua
- 刊名：Acta Petrologica et Mineralogica
- 出版年：2010
- 卷期：29(6)
- 关键词：辉长岩 ; gabbros ; 岩石地球化学 ; lithogeochemistry ; 天山 ; Tianshan Mountains
- 页码：p.675-690
- 图表：6 illus., 3 tables, 72 refs.
- 分类号：0801
- issnNo：ISSN1000-6524
- isbnNo：CN11-1966/P
摘要
In this paper, the authors conducted a detailed study of its geochemistry and geochronology. With the data obtained in combination of regional tectonic evolution, this paper discusses its petrogenesis, tectonic setting and geological significance. Some samples show abnormally high MgO, Al2O3 and CaO content, which may be due to the accumulation of olivine and plagioclase. Based on geochronological and geochemical characteristics of the Haladata pluton, the authors believe that the Tekesi area was at the stage of this transition of tectonic settings. It is suggested that the Late Paleozoic gabbroic rocks (the Haladala pluton) in Tekes County might also have been formed in this transition stage. Hence, these rocks may indicate a change of tectonic framework in the West Tianshan area and provide evidence for the presence of magmatism in this region during the tectonic frame change.