AG  >> Vol. 5 No. 3 (June 2015)

    粤西德庆岩体地质特征及其锆石LA-ICP-MS年龄
    Geological Characteristics and LA-ICP-MS Zircon U-Pb Dating of Deqing Pluton, West Guangdong Province

  • 全文下载: PDF(685KB) HTML    PP.154-159   DOI: 10.12677/AG.2015.53019  
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作者:  

张献河,严成文,李宏卫,李出安:广东省地质调查院,广东 广州

关键词:
德庆岩体地质特征LA-ICP-MS锆石U-Pb测年粤西Deqing Pluton Geological Characteristics LA-ICP-MS Zircon U-Pb Dating West Guangdong Province

摘要:

德庆岩体是粤西主要的深成岩体,其主体岩石岩性为中粒含斑黑云母二长花岗岩,属于硅过饱和,铝过饱和的钙碱性花岗岩类。本文使用LA-ICP-MS锆石U-Pb测年方法获得花岗岩体主体成岩结晶年龄为237.1 ± 3.4 Ma,属于印支期岩浆活动的产物。形成于板块间同碰撞的构造环境,与区域内云开地区印支期同碰撞造山作用有关。

Deqing pluton is one of the main plutons located in western part of Guangdong Province. Its main lithology is middle-grained (porphyritic) biotite monzogranite and it is calc-alkali granite that is rich in SiO2 and Al2O3. This study used LA-ICP-MS zircon U-Pb dating method and the result shows that the age of crystallization of the Deqing pluton is about 237.1 ± 3.4 Ma, belonging to the product of Indosinian magmatism, and its genesis is closely related to syn-collision tectonic background in Yunkai area during Indosinian movement.

文章引用:
张献河, 严成文, 李宏卫, 李出安. 粤西德庆岩体地质特征及其锆石LA-ICP-MS年龄[J]. 地球科学前沿, 2015, 5(3): 154-159. http://dx.doi.org/10.12677/AG.2015.53019

参考文献

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