| 西准噶尔A型花岗岩地球化学特征及构造意义 |
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| 引用本文： | 王晓伟,杨春霞,刘景显,田向盛.西准噶尔A型花岗岩地球化学特征及构造意义[J].甘肃地质学报,2011(2):11-19. |
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| 作者姓名： | 王晓伟 杨春霞 刘景显 田向盛 |
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| 作者单位： | 甘肃省地矿局第三地勘院;兰州大学资源环境学院; |
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| 摘 要： | 西准噶尔地区广泛发育晚古生代后碰撞花岗岩,年龄多集中于300Ma左右,在时代上属于晚石炭世,A型花岗岩具有高硅、低铝、富碱、准铝质—弱过铝质、贫钙、低镁,10 000×Ga/Al比值较大,强烈富集高场强元素（HFSE）及Zr、Y、Ga等元素,Sr、Ba强烈亏损,稀土配分模式图呈现典型的右倾＂海鸥型＂等,并且在A1-A2...
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| 关 键 词： | 后碰撞 A型花岗岩 地球化学 西准噶尔 |
GEOCHEMISTRY AND TECTONIC SIGNIFICANCE OF A-TYPE GRANITE IN WEST JUNGGAR |
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| WANG Xiao-wei,YANG Chun-xi,LIU Jing-xian and TIAN Xiang-sheng.GEOCHEMISTRY AND TECTONIC SIGNIFICANCE OF A-TYPE GRANITE IN WEST JUNGGAR[J].Acta Geologica Gansu,2011(2):11-19. |
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| Authors: | WANG Xiao-wei YANG Chun-xi LIU Jing-xian and TIAN Xiang-sheng |
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| Institution: | WANG Xiao-wei1,2,YANG Chun-xia2,LIU Jing-xian1,TIAN Xiang-sheng1(1.No.3 Geology and Exploration Team,Gansu Provincial Bureau of Geology and Mineral Exploration and Development,Lanzhou 730050,China,2.College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China) |
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| Abstract: | Widespread in the West Jungar,the post-collisional magrnatic rocks of late Paleozoic were mostly formed around 300Ma,the era of the Late Carboniferous.Magmatic rocks in the region consist of A-type granite with high silicon,low aluminum,alkali-rich,metaluminous-weakly peraluminous,and poor calcium,low magnesium,10 000 Ga/Al ratio was higher,strong enrichment in high field strength elements(HFSE),Zr,Y,Ga,etc.Sr,Ba strong losses,REE patterns show a typical right-wing plan seagull-type,etc.A1-A2 type granite d... |
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| Keywords: | post-collisional A-type granite geochemistry West Junggar |
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