Application of the Pt-Re-Os isotopic systems to mantle geochemistry and geochronology
Application of the Pt-Re-Os isotopic systems to mantle geochemistry and geochronology
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DOI：
10.1016/j.lithos.2004.08.003
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发表时间：
2005-06-01
期刊：
影响因子：
3.5
通讯作者：
Carlson, RW
中科院分区：
文献类型：
--
作者：
Carlson, RW
Re-Os系统现已广泛应用于固体地球科学中的各种问题。本文主要介绍Re-Os系统在地幔年龄、组成以及地幔中各种物质在形成地表岩浆中的作用等方面的应用。天然物质中Re-Os系统学研究的进展伴随着对Re和铂族元素地球化学行为的认识的巨大进步。这组元素和它们所包含的两个同位素系统（Pt-Os和Re-Os）提供了一个地球过程的视图，这些过程不是由构成地球外部大部分的硅酸盐相控制的，而是由构成地幔和地壳的硫化物，氧化物和金属相控制的。这些阶段是敏感的氧和硫逸度的方式，硅酸盐不是。因此，Re-Os和Pt-Os系统提供了一个新的观点到固体地球的地球化学演化，这是补充，通过研究传统的放射性系统的基础上亲石元素。(C)2005 Elsevier B. V.保留所有权利。
The Re-Os system has now been applied to a wide variety of problems in the solid earth sciences. This review concentrates on applications of the Re-Os system to understanding the age and composition of the mantle and the role that various materials in the mantle play in generating surface magmas. The progress in understanding Re-Os systematics in natural materials has accompanied dramatic advances in the understanding of the geochemical behavior of Re and the platinum group elements. This group of elements and the two isotopic systems (Pt-Os and Re-Os) they contain provide a view of Earth processes that are controlled not by the silicate phases the make up most of the outer portion of Earth, but by sulfide, oxide and metal phases that constitute but a trace of the mantle and crust. These phases are sensitive to oxygen and sulfur fugacities in ways that silicates are not. Consequently, the Re-Os and Pt-Os systems provide a new view into the geochemical evolution of the solid Earth that is complementary to that obtained through the study of traditional radiometric systems that are based on lithophile elements. (C) 2005 Elsevier B.V. All rights reserved.