| 南岭中西段若干复式花岗岩体的成因模式研究 |
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| 引用本文： | 汪传胜,汪相,姚晓娟.南岭中西段若干复式花岗岩体的成因模式研究[J].岩石矿物学杂志,2004,23(3):203-213. |
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| 作者姓名： | 汪传胜 汪相 姚晓娟 |
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| 作者单位： | 南京大学,地球科学系,江苏,南京,210093 |
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| 基金项目： | 国家自然科学基金资助项目 ( 4 0 172 0 2 3 )，国家自然科学基金重点资助项目 ( 4 0 13 2 0 10 ) |
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| 摘 要： | 岩石学、岩石地球化学、黑云母矿物化学和副矿物特征等研究表明，南岭中西段3个复式花岗岩体的演化规律表现为两种方式：一种是以花山复式花岗岩体为代表的不同母岩浆演化方式，其补体美华花岗岩可能经历了与花山主体岩浆相似的分离结晶作用；另一种是以金鸡岭复式花岗岩体和大东山复式花岗岩体为代表的相同母岩浆演化方式，它们的补体螃蟹木花岗岩和猪蹄石花岗岩分别为金鸡岭主体和大东山主体花岗质母岩浆经过分离结晶作用形成。两种不同产出方式的补体花岗岩可能表明它们与主体岩浆的形成机制不同。
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| 关 键 词： | 复式花岗岩体 主体 补体 母岩浆 分离结晶作用 南岭 |
| 文章编号： | 1000-6524(2004)03-0203-11 |
Petrogenetic models of the composite granitic plutons in the mid-western Nanling Region |
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| WANG Chuan-sheng,WANG Xiang and YAO Xiao-juan.Petrogenetic models of the composite granitic plutons in the mid-western Nanling Region[J].Acta Petrologica Et Mineralogica,2004,23(3):203-213. |
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| Authors: | WANG Chuan-sheng WANG Xiang and YAO Xiao-juan |
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| Abstract: | Based on studies of petrology, geochemistry, mineralogical chemistry of biotites, the authors hold that the three composite granitic plutons in the mid-western Nanling Region display two petrogenic models. One is the evolutional model of magmas with different parents, which occurred in the Huashan composite granitic plutons, and the Meihua supplementary granite might have resulted from derivative liquids segregated from fractional crystallization of magmas equivalent to Huashan magmas. The other is the evolutional model of magmas with the same parent, which occurred in the Jinjiling and Dadongshan composite granitic plutons. Their supplementary bodies, namely Pangxiemu granite and Zhutishi granite, resulted from the condensation of the residual magmas, and the two residual magma bodies were generated by fractional crystallization of the parental magmas of the Jinjiling and Dadongshan main bodies respectively. Two kinds of evolutional models of the supplementary granites may suggest the different genetic mechanisms of magmas of their main bodies. |
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| Keywords: | composite granitic plutons main bodies supplementary bodies parental magmas fractional crystallization Nanling Region |
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