| 覃曼,周瑶琪,刘加召,刘美晨.铼-锇同位素体系定年研究综述[J].地质找矿论丛,2017,32(3):421-427 |
| 铼-锇同位素体系定年研究综述 |
| Review of Re-Os geochronology |
| 投稿时间：2016-07-04 |
| DOI：10.6053/j.issn.1001-1412.2017.03.010 |
| 中文关键词: Re-Os同位素 放射性定年 辉钼矿 普通硫化物 地幔橄榄岩包体 |
| 英文关键词:Re-Os isotopic system dating molybdenite sulfides mantle-derived peridotitic inclusion |
| 基金项目:国家自然科学基金项目（编号：41272123）资助。 |
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| 中文摘要: |
| 铼-锇（Re-Os）同位素体系以其特殊的地球化学性质为确定岩石的形成时间、演化过程及其地球动力学背景提供了重要参数。随着测试技术和超净化实验室的发展，Re-Os同位素的应用领域不断扩大，测试对象种类也随之扩展。然而，不同测试对象的Re-Os同位素赋存形式、活动特征及其体系封闭性有所差异。文章总结了以辉钼矿、普通硫化物、地幔橄榄岩包体、富有机质沉积岩以及灰岩作为Re-Os同位素体系定年对象的基本原理和研究进展，并对存在问题进行简要地评述，最后对其未来的发展方向作了展望，以期推动Re-Os同位素体系在地质科学中的研究和应用。 |
| 英文摘要: |
| The Re-Os isotopic system can provide unique insight in dating and evolution of rocks and parameters of regional geodynamic background as they are highly siderophile compared to other long-lived radiaogenic isotopic systems. With the advances in both chemical separation procedures and chemical clean room, the Re-Os isotopic system is applied to a wider field. However, study suggests that occurrence, active characteristics and closure temperature of Re-Os system are varied. In this paper are summed up the principles of the Re-Os dating, progress recently made and the problems remained on basis of its application to molybdenite, sulfides, mantle-derived peridotitic inclusions, organic-rich sedimentary rocks and limestone. Then is put forward the development direction. |
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