| 粤东中生代花岗质火山-侵入杂岩成因的Nd同位素制约 |
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| 引用本文： | 徐晓春,岳书仓.粤东中生代花岗质火山-侵入杂岩成因的Nd同位素制约[J].合肥工业大学学报(自然科学版),1999(3). |
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| 作者姓名： | 徐晓春 岳书仓 |
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| 作者单位： | 合肥工业大学资源与环境科学系 |
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| 摘 要： | 运用Ｎｄ同位素及稀土元素Ｎｄ的含量关系对岩浆成因的制约，结合区域地质地球化学特征，确定粤东地区中生代花岗质火山－侵入杂岩的成因机制，不是幔源岩浆同化地壳物质并发生分离结晶作用以及壳幔两种来源岩浆的混合作用，而是地壳深熔作用，即古老地壳基底岩石的部分熔融作用。
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| 关 键 词： | 花岗质火山－侵入杂岩 Nd同位素 岩浆成因 粤东 |
CONSTRAINS ON Nd ISOTOPE:GENESIS OF MESOZOIC GRANITIC VOLCANIC INTRUSIVE COMPLEXES IN EASTERN GUANGDONG |
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| Xu Xiaochun,Yue Shucang.CONSTRAINS ON Nd ISOTOPE:GENESIS OF MESOZOIC GRANITIC VOLCANIC INTRUSIVE COMPLEXES IN EASTERN GUANGDONG[J].Journal of Hefei University of Technology(Natural Science),1999(3). |
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| Authors: | Xu Xiaochun Yue Shucang |
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| Abstract: | Mesozoic granitic volcanic intrusive complexes crop out widely over eastern Guangdong Province. To investigate the genesis of the granitic complexes, the data of Nd isotope and Nd element in some acidic volcanic rocks and granites are discussed.According to this research and the regional geological and geochemical characteristics,it is concluded that the genesis of the Mesozoic granitic volcanic intrusive complexes are neither mantle magma assimilation fractional crystallization,nor mixing of mantle magma and crustal magma,but anatexis (equilibrium partial melting )of continental crust. |
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| Keywords: | granitic volcanic intrusive complexes Nd isotope genesis of magma eastern Guangdong Province |
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