| 对金伯利岩测年方法和测年样品的探讨 |
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| 引用本文： | 吕青,葛跃进.对金伯利岩测年方法和测年样品的探讨[J].山东国土资源,2016,32(10). |
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| 作者姓名： | 吕青 葛跃进 |
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| 作者单位： | 山东省第七地质矿产勘查院;山东省第七地质矿产勘查院 |
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| 摘 要： | 金伯利岩是化学成分、矿物组成和结构多变的混杂岩,极易发生蚀变。因此,采用单一的年龄测定方法很难确定金伯利岩的侵位年龄,数据结果差别很大。该文以山东蒙阴地区金伯利岩应用的测年方法为例,对比分析了K-Ar法、Ar-Ar法、Rb-Sr法、Sm-Nd法、U-Pb法的年龄数据,探讨了不同测年方法及其选取的岩石、矿物样品的适用性。认为在符合地层对金伯利岩侵位时间约束的前提下,采用多种同位素测年方法相互印证,深入研究矿物、岩石及岩浆成因是必不可少的。
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| 关 键 词： | 金伯利岩 形成时代 年龄测定方法 |
Study on Age Dating Methods and Age Dating Samples of Kimberlite |
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| LV Qing and GE Yuejin.Study on Age Dating Methods and Age Dating Samples of Kimberlite[J].Land and Resources in SHANDONG Province,2016,32(10). |
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| Authors: | LV Qing and GE Yuejin |
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| Abstract: | Kimberlite is complex rock with changeful chemical composition, mineral composition and structures. Alteration also easily happened. Therefore, the age of kimberlite is difficult to be determined by using a single age determination method, and the results are very different. In this paper, setting the age determination methods of kimberlite applied in Mengyin area of Shandong province as an example, through comparison and analysis of the KAr method, ArAr method, RbSr method, SmNd method, UPb method, different age determination method and applicability of rock and mineral samples have been studied. It is regarded that in line with the formation of kimberlite emplacement under the premise of time constraints, it is very essential to confirm with each other, to sutdy minerals, rocks and magmatic in deep part by using a variety of dating methods. |
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