应朱建喜副所长邀请，澳大利亚科学院院士Trevor R. Ireland将于10月26日（下周一）访问我所并在综合楼701会议室做报告。欢迎大家参加并积极讨论！

    报 告 人：Trevor R. Ireland 院士

     报告题目：Oxygen Isotope Tracing of the Solar System

报告时间：10月26日（下周一）上午9:00

     报告地点：综合楼701会议室

     报告简介：      

     Oxygen isotopes show extremely large variability in solar system materials.  While on Earth we see the most variability in mass dependent fractionation, the locus of variability in the solar system lies in the effective abundance of 16O.  This allows meteorites and asteroids to be placed in quite specific groupings and is particularly apparent in carbonaceous chondrites and their inclusions.  The origin of the 16O fractionation is still debated but is best explained as inheritance of CO, H2O, and [SiO4]2- components from the molecular cloud out of which our solar system formed.  Recent asteroid sample return missions have opened up new avenues for research, and the potential for a Mars sample return is increasingly likely.  Mars as a planet provides many interesting comparisons with Earth history.

      报告人简介：

     Trevor R. Ireland教授，澳大利亚科学院院士，AGU fellow， 国际地球化学会士。Bunsen奖得主，国际陨石学会前主席，离子探针专家，主持设计SHRIMP SI，SHRIMP V。在小行星、火星等领域有重要建树。