| 东准噶尔西部花岗岩带的岩石成因探讨 |
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| 引用本文： | 刘显凡,田慧新.东准噶尔西部花岗岩带的岩石成因探讨[J].成都理工大学学报(自然科学版),1991(3). |
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| 作者姓名： | 刘显凡 田慧新 |
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| 作者单位： | 成都地质学院地质学系
(刘显凡),成都地质学院地质学系(田慧新) |
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| 摘 要： | 根据新疆东准噶尔西部花岗岩带各岩体在地质学、岩石学、岩石化学和稀土元素及同位素组成等方面的特征,探讨了它的成因和演化。结果表明,该区花岗岩,尤其是含锡花岗岩成岩方式为岩浆分异交代,物质来源主要为地幔与地壳的复合作用形成,属I型→同熔型→A型→改造型的过渡类型花岗岩,其中锡的来源主要与岩石演化的途径和方式有关。
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| 关 键 词： | 花岗岩 成因 演化 岩浆 复合作用 |
GENESIS AND EVOLUTION OF THE BELTED GRANITIC BATHOLITH IN THE WEST AREA OF EAST ZHUNGEER, XINJIANG |
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| Liu Xianfan,Tian Huixin.GENESIS AND EVOLUTION OF THE BELTED GRANITIC BATHOLITH IN THE WEST AREA OF EAST ZHUNGEER, XINJIANG[J].Journal of Chengdu University of Technology: Sci & Technol Ed,1991(3). |
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| Authors: | Liu Xianfan Tian Huixin |
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| Institution: | Liu Xianfan;Tian Huixin |
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| Abstract: | Rock bodies of the beited granitic batholith are studied with respect to its geology, petrogra-phy. petrochemistry, REE distribution and isotopic composition. Gencesis and evolution of the beltedcomplex is discussed. The result shows that the tin-bearing granites of this complex were formedthrough crystallization-differentiation and metasomatism. The material of these rocks is most derivedfrom the composite process in which the deep crustal and upper mantle magma are added with crustalcontamination in varying degrees. A transitional type from"I" via syntectic, "A" to reconstructiongranite is suggested for these tin-bearing rocks. The origin of associated tin is mainly related with thepath and mode of evolution for these rocks. |
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| Keywords: | granite genesis evolution magma composite process |
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