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利用锆石形态、成分组成及年龄分析进行沉积物源区示踪的综合研究*

, PP. 184-183

Keywords: 物源示踪,矿物年代学,锆石裂变径迹,锆石U-Pb年龄谱

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Abstract:

通过盆地碎屑沉积物分析示踪源区,进而探讨区域构造演化已成为当前地学研究的热点。盆地沉积物中的锆石不但分布广泛,而且稳定性极强,因而能保存大量的源区信息。随着锆石裂变径迹及U-Pb年龄谱分析等新测试技术的发展,锆石的形态、成分组成及年龄分析已成为盆地沉积物源区示踪的重要探针。本文结合实例,介绍了目前在综合利用锆石的形态、成分组成及年代学特征进行物源示踪的一些主要进展。由于物源示踪的复杂性,在利用锆石进行物源示踪时,应充分了解区域地质背景,密切结合其它物源示踪方法。

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