Stable isotope fractionation of S, Te, and Pd and the roles of core formation and late accretion on siderophile volatile elements in the Earth (B02+)

S、Te 和 Pd 的稳定同位素分馏以及地核形成和晚期吸积对地球中亲铁挥发性元素的作用 (B02)

• 批准号: 290759947
• 金额: --
• 依托单位: Institut für Geologische Wissenschaften
• 依托单位国家: 德国
• 项目类别: CRC/Transregios
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/290759947?language=en
• 关键词: Stable; isotope; fractionation; Te; Pd

The aim of this study is to investigate the stable isotope composition of terrestrial mantle rocks (S, Te and Pd) and chondritic meteorites (Te and Pd) and to calibrate experimentally the stable isotope fractionation for the aforementioned elements imparted by metal-silicate equilibration during core formation. The measurements and experiments will constrain the geochemical behavior of S, Te, and Pd and their isotopes during core formation and may help to explain the observed isotopic differences between chondrites and bulk silicate Earth.

本研究的目的是调查地球地幔岩石（S，Te和Pd）和南极陨石（Te和Pd）的稳定同位素组成和实验校准的稳定同位素分馏的金属硅酸盐平衡在核心形成过程中赋予上述元素。测量和实验将约束的地球化学行为的S，Te，和Pd及其同位素在核心形成，并可能有助于解释所观察到的同位素之间的差异，钙钛矿和散装硅酸盐地球。