| 西秦岭温泉花岗岩岩石化学特征及岩浆混合信息 |
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| 引用本文： | 李永军,李英,刘志武,李注苍,李金宝.西秦岭温泉花岗岩岩石化学特征及岩浆混合信息[J].甘肃地质学报,2003,12(1):30-36. |
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| 作者姓名： | 李永军 李英 刘志武 李注苍 李金宝 |
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| 作者单位： | [1]长安大学地球科学与国土资源学院，陕西西安710054 [2]甘肃省地矿局第三地勘院，甘肃兰州730050 |
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| 基金项目： | 中国地质调查局地质调查项目 (编号 :2 0 0 0 1 30 0 0 1 0 1 71 )资助 |
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| 摘 要： | 西秦岭温泉岩体是壳幔混浆的产物。寄主岩石以贫CaO富FeOtot为特征 ,ANKC值大于 1 1 ,NK A值均小于 0 9,属铝过饱和钙碱性系列岩石 ,系上地壳碎屑岩类熔融而成。基性端元暗色微细粒镁铁质包体及基性岩墙 ,高Na2 O及K2 O ,而贫FeOtot。两类岩浆混合形成的混浆花岗岩 ,岩石地球化学介于两个端元并有显著的过渡特征和依从关系反映了重要的岩浆混合信息
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| 关 键 词： | 花岗岩体 地球化学 岩浆混合 西秦岭 温泉 |
LITHOGEOCHEMICAL FEATURES AND MAGMA MIXING INFORMATION
OF WENQUAN GRANITE IN WESTERN QINLING AREA |
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| LI Yong jun,LI Ying,LIU Zhi wu,LI Zhu cang and LI Jin bao.LITHOGEOCHEMICAL FEATURES AND MAGMA MIXING INFORMATION
OF WENQUAN GRANITE IN WESTERN QINLING AREA[J].Acta Geologica Gansu,2003,12(1):30-36. |
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| Authors: | LI Yong jun LI Ying LIU Zhi wu LI Zhu cang and LI Jin bao |
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| Institution: | LI Yong jun 1,LI Ying 1,LIU Zhi wu 1,LI Zhu cang 2,LI Jin bao 1 |
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| Abstract: | Wenquan granite of Western Qinling area originated from crustal and mantle magma mixing. The host granite,which is one portion of Wenguan granite,is characterized by poor in CaO and rich in FeO tot , its ANKC is exceed 1.1 and NK/A is lower than 0.9. All these show that the host granite belongs to aluminium supersaturation and calc-alkali series,and came from the melting of upper crust clastic rocks. Mafic Magmatic Enclave(MME)and dykes are abnormally rich in Na 2O?K 2O and poor in FeO tot ?The Intensively migmatized granite form crust and mattle sources with its geochemistry between the two sources, is of outstanding transitional characteristics and mutual interdependent relationship, which reflects important magma mixing information. |
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| Keywords: | Granite Geochemistry Magma mixing Western Qinling Wenquan |
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