地学前缘 ›› 2007, Vol. 14 ›› Issue (6): 151-158.

• 论文 • 上一篇    下一篇

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

王立武; 王颖; 杨静; 吴国庆; 李国艳; 盛利;

  

  • 出版日期:2008-06-30 发布日期:2008-06-30
  • 基金资助:

    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)

Pre-Mesozoic basement provenance tracing of the Songliao Basin by means of detrital zircon SHRIMP chronology

  • Online:2008-06-30 Published:2008-06-30

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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。

关键词:

SHRIMP, 碎屑锆石, 物源分析, 松辽盆地南部基底,

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...

Key words:

SHRIMP, detrital zircon, provenance analysis, the basement of the south Songliao Basin,