| 汪清县六道崴子地区碱长花岗岩地质特征及构造背景分析 |
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| 引用本文： | 孔祥晶.汪清县六道崴子地区碱长花岗岩地质特征及构造背景分析[J].吉林地质,2014(2):26-30. |
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| 作者姓名： | 孔祥晶 |
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| 作者单位： | 吉林省勘察地球物理研究院,吉林长春130012 |
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| 摘 要： | 分布在汪清县六道崴子地区的碱长花岗岩,研究后认为是A型花岗岩。其特征是具晶洞构造,钾长石是中正微长石,斜长石为钠长石(An=1),SiO2、K2O、Na2O质量分数较高,CaO、MgO质量分数较低。∑REE质量分数为139.3,δEu为0.14,亏损十分明显,是非造山期拉张构造环境形成的碱性花岗岩。
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| 关 键 词： | 汪清县六道崴子地区 碱长花岗岩 A型花岗岩 构造环境 |
Geological features and tectonic background of Alkali feldspar granite in Liudaowaizi area of Wangqing County |
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| KONG Xiang-jing.Geological features and tectonic background of Alkali feldspar granite in Liudaowaizi area of Wangqing County[J].Jilin Geology,2014(2):26-30. |
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| Authors: | KONG Xiang-jing |
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| Institution: | KONG Xiang-jing (Institute of Geophysical Exploration of Jilin Province, Changchun 130012, Jilin, China) |
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| Abstract: | After researching, alkali feldspar granite that located in Liudaowaizi area of Wangqing County, is A type granite, which with miarolitic structure, potassium feldspar is microcline, plagioclase is albite （An=1）, the mass fraction of SiO2, K2O, Na2O are high, which of CaO, MgO are low. The mass fraction of∑REE is 139.3,δEu is 0.14, its loss is obvious. That is alkali granite formed in extensional tectonic environment of non orogenic period. |
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| Keywords: | Liudaowaizi area of Wangqing County alkali feldspar granite A type granite tectonic environment |
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