| 新疆谢米斯台东段早石炭世A型花岗岩地球化学特征及构造意义 |
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| 引用本文： | 朱光儒,王晓伟,王启航.新疆谢米斯台东段早石炭世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):29-34. |
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| 作者姓名： | 朱光儒 王晓伟 王启航 |
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| 作者单位： | 甘肃省地矿局第三地勘院; |
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| 基金项目： | 新疆和布克赛尔蒙古自治县谢米斯台东段一带1∶5万区域地质矿产调查(项目编号:QD200610); 新疆维吾尔自治区财政预算内地质勘查专项资金项目(QD200610) |
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| 摘 要： | 新疆谢米斯台东段早石炭世A型花岗岩,富硅碱,A/CNK介于0.88～0.98之间,σ在2.44～5.90之间。相对富集大离子亲石元素、轻稀土元素,亏损Ba、Sr、Nb、P、Ti,稀土元素分布曲线呈明显的＂海鸥＂型。由早侵入次到晚侵入次,有向酸碱性增强方向演化,显示A型花岗岩特征,具造山后或后造山特征,形成于碰撞造山后的...
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| 关 键 词： | 谢米斯台东段 早石炭世 A型花岗岩 |
CHARACTERISTICS OF EARLY CARBONIFEROUS A-TYPE GRANITEIN THE EASTERN SEGMENT OF XIEMISITAI,XINGJIANG |
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| ZHU Guang-ru,WANG Xiao-wei and WANG Qi-hang.CHARACTERISTICS OF EARLY CARBONIFEROUS A-TYPE GRANITEIN THE EASTERN SEGMENT OF XIEMISITAI,XINGJIANG[J].Acta Geologica Gansu,2011(2):29-34. |
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| Authors: | ZHU Guang-ru WANG Xiao-wei and WANG Qi-hang |
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| Institution: | ZHU Guang-ru,WANG Xiao-wei,WANG Qi-hang(No.3 Geology and Mineral Exploration Team,Gansu Provincial Bureau of Geology and Exploration and Development,Lanzhou 730050,China) |
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| Abstract: | The intrusive rock located in the eastern part of Xiemisitai,Xingjiang,was identified as A-type granites.The chemical compositions of the intrusions are characterized by high-Si,A/CNK 0.88 to 0.98 range and the Rittmann Index σ in between 2.44 to 5.90.The REE pattern is characterized by rightward declined ＂Seagull＂ shaped curves,rich in LREE and strong negative Eu anomalies. |
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| Keywords: | Xingjian the eastern segment of Xiemisitai Early Carboniferous A-type granites |
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