| 北秦岭灰池子花岗岩基成岩物质来源探讨 |
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| 引用本文： | 张宏飞,骆庭川.北秦岭灰池子花岗岩基成岩物质来源探讨[J].矿物岩石,1994,14(1):67-73. |
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| 作者姓名： | 张宏飞 骆庭川 |
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| 作者单位： | 中国地质大学地球化学系 |
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| 摘 要： | 本文主要通过Ｎｄ，Ｓｒ和Ｏ同位素示踪研究，分析了灰池子花岗岩基的成岩物质来源，初步查明该岩体的岩浆源区由６９％的地幔物质和３１％的陆壳物质混合而成，属壳幔型花岗岩。
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| 关 键 词： | 花岗岩，物质来源，同位素示踪，灰池子花岗岩基，北秦岭 |
DISCUSSION ON SOURCE MATERIAL OF THE HUICHIZI GRNITIC BATHOLITH FROM THE NORTH QINLING,CHINA |
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| Zhang Hongfei,Luo Tingchuan,Zhang Benren.DISCUSSION ON SOURCE MATERIAL OF THE HUICHIZI GRNITIC BATHOLITH FROM THE NORTH QINLING,CHINA[J].Journal of Mineralogy and Petrology,1994,14(1):67-73. |
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| Authors: | Zhang Hongfei Luo Tingchuan Zhang Benren |
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| Abstract: | The rocks of the Huichizi are mainly composed of biotite plagioclase granites formed in early Palaozoic. In the light of elemental geochemical characteristics,the biotite plagioclase granites belong to I-type granites.Those show that the source materials were mainly derived from an igneous mate rials.According to the traces of Nd,Sr and O isotopes,the rock-forming materials of the batholith had not distinctly linked with the Qinling group gneisses and plagioclase amphibolites ,but rather were main-ly related to a mantal source. The continental crust was taken as an endmember and depleted mantal as another endmember,On the basis of Nd and Sr isotopic data of the batholith,the mixing proportions of the two endmembers of source materials are calculated.The results are as foflows:the source materials for the batholith consist of 69?pleted mantal and 31%continental crust materials. |
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| Keywords: | granite source material isotopic tracing Huichizi batholith North Qinling |
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