| 用碎屑锆石SHRIMP年代学方法恢复松辽盆地南部前中生代基底的源区特征 |
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| 引用本文： | 王立武,王颖,杨静,吴国庆,李国艳,盛利.用碎屑锆石SHRIMP年代学方法恢复松辽盆地南部前中生代基底的源区特征[J].地学前缘,2007,14(6):151-158. |
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| 作者姓名： | 王立武 王颖 杨静 吴国庆 李国艳 盛利 |
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| 基金项目： | 国家自然科学基金资助项目(40473030,40234045);; 中国科学院知识创新工程项目(KZCX2-104) |
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| 摘 要： | 松辽盆地东南隆起区基底广泛发育副变质岩,3件样品的SHRIMP锆石U-Pb年龄范围为406~2208Ma,反映了松辽盆地基底源区的复杂性。根据目前有关年代学研究成果,推断1100~2200Ma碎屑锆石可能来源于华北克拉通,而样品中的520Ma的碎屑锆石则可能来源于佳木斯地块。另外,样品的岩石学特征和临近大黑山条垒下二台群具有一定的可比性,推测文中样品可能是大黑山条垒在盆地内的延伸。
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| 关 键 词： | SHRIMP 碎屑锆石 物源分析 松辽盆地南部基底 |
Pre-Mesozoic basement provenance tracing of the Songliao Basin by means of detrital zircon SHRIMP chronology |
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| Abstract: | In the southeast uplift of the Songliao Basin, the basement develop para-rock widely. In this paper, we obtain extensive age range from 406 Ma to 2 208 Ma from 3 para-rock samples by means of detrital zircon SHRIMP chronology, which suggests that the basement of the Songliao Basin has complex provenance. Combined with previous studies, we suggest that the 1 100-2 200 Ma zircons perhaps originate from the China North Craton, while the zircons of 520 Ma may stem from Jiamusi massif. Besides, the samples petr... |
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| Keywords: | SHRIMP detrital zircon provenance analysis the basement of the south Songliao Basin |
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