Water-Rock Reactions in the Solar System

不同太阳系天体的样本通过陨石的自然流动和样本返回太空任务到达地球。通过对这类样品使用各种实验技术，我们可以限制与火星和小行星上水的反应有关的矿物组合的来源，以便更好地了解太阳系的演化。Hayabusa2任务在2019年年中成功采样了小行星琉球，并在一年后将样品带回了地球。莱斯特是Hayabusa2矿物学团队的一员，我们正在对样品进行一些初步分析。利用各种电子显微镜技术和最近在钻石同步加速器投入使用的光束线，我们有一个独特的机会来确定小行星过程。我们还将分析与来自碳质球粒陨石的Ryugu物质非常相似的物质，包括最近发现的Winchcombe陨石。同样的分析技术也可以应用于最近发现的火星陨石。我们对纳赫利特陨石进行了一些最详细的分析，这个学生将研究最近发现的一种新的纳赫利特陨石。通过确定母岩中水-岩反应产生的矿物组合，我们将能够约束火星地壳这一部分的地下含水过程的环境。

Samples of different Solar System bodies arrive on Earth through the natural flux of meteorites and sample return space missions. By using a variety of experimental techniques on such samples we can constrain the origin of mineral assemblages associated with the reaction of water on Mars and asteroids in order to better understand the evolution of the Solar System. The Hayabusa2 mission successfully sampled asteroid Ryugu in mid 2019 and returned samples to Earth a year later. Leicester is part of the Hayabusa2 mineralogy team and we are making some of the first analyses of the samples. Using a variety of electron microscopy techniques and recently commissioned beamlines at the Diamond synchrotron we have a unique opportunity to determine asteroidal processes. We will also analyse close analogues to the Ryugu material from carbonaceous chondrites including the recently discovered Winchcombe meteorite find. The same analytical techniques can be applied to recently discovered martian meteorites. We have made some of the most detailed analyses of the nakhlite meteorites and this studentship will study a recently discovered new nakhlite. By determining the mineral assemblages resulting from water-rock reactions in the parent rocks we will be able to constrain the environment of sub surface hydrous processes in that part of the martian crust.