Investigation of the behaviour of iron metal during impact melting

铁金属在冲击熔化过程中的行为研究

• 批准号: 2107898
• 金额: --
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2107898
• 关键词: Investigation; behaviour; iron; metal; during

Impacts play a major role in reworking planetary surfaces. Impact melting results in emplacement of molten target rock among unmelted rock clasts, resulting in rocks described as impact melt breccias. These rocks are typically composed of silicate clasts and a silicate-dominated impact melt. However, among the meteorite and lunar collections there are also many examples of iron metal clasts that are incorporated in impact melt breccias. This project is an investigation of the behaviour of metal during formation of impact melt breccias in a variety of materials, in order to understand the chemical and physical effects of short heating pulses. The focus will be on understanding the processes that have led to formation of partially molten metal textures in the CB chondrites, which have undergone impact melting. These will be compared with observations of metal grains in lunar samples (Apollo samples and meteorites) and impact-melted ordinary chondrites

撞击在改造行星表面方面发挥着重要作用。冲击熔融导致熔融目标岩石在未熔融的碎岩中就位，从而形成被称为冲击熔融角砾岩的岩石。这些岩石通常由硅酸盐碎屑和以硅酸盐为主的冲击熔体组成。然而，在陨石和月球收藏中，也有许多铁金属碎屑被纳入冲击熔化角砾岩的例子。该项目是对各种材料中冲击熔融角砾岩形成过程中金属行为的研究，以了解短加热脉冲的化学和物理效应。重点是了解导致 CB 球粒陨石中部分熔融金属结构形成的过程，这些球粒陨石经历了冲击熔化。这些将与月球样本（阿波罗样本和陨石）和撞击熔化的普通球粒陨石中金属颗粒的观测结果进行比较