Investigating aqueous and thermal alteration in carbonaceous chondrite meteorites

该项目的目的是研究热蚀后的CI、CM和CR球粒陨石的矿物学、结构和化学性质。该项目有可能使用广泛的分析技术，包括光学和电子显微镜（SEM/EMPA），计算机断层扫描（CT），红外和拉曼光谱。同位素测量将用于推断蚀变的时间，而动态加热实验将约束与热变质作用相关的矿物学和化学变化。该项目的结果将为小行星的演化提供新的见解，并为理解从小行星Bennu和Ryugu返回的样本提供框架。这是一个多学科项目，利用伦敦自然历史博物馆的行星材料组、曼彻斯特大学的同位素地球化学和宇宙化学组以及开放大学的行星和空间科学组提供的世界级陨石收集和分析设施。

The aim of this project is to investigate the mineralogical, textural and chemical properties of the thermally altered CI, CM and CR chondrites. The project has the potential to use a wide range of analytical techniques including optical and electron microscopes (SEM/EMPA), computed tomography (CT), and infrared and Raman spectroscopy. Isotopic measurements will be used to infer the timing of alteration, and dynamic heating experiments will constrain the mineralogical and chemical changes associated with thermal metamorphism. The results of the project will provide new insights into the evolution of asteroids and a framework for understanding samples returned from asteroids Bennu and Ryugu.This is a multi-disciplinary project utilising the world-class meteorite collection and analytical facilities available to the Planetary Materials Group at the Natural History Musuem, London, the Isotope Geochemistry and Cosmochemistry Group at the University of Manchester, and the Planetary and Space Science Group at the Open University.