Investigating planetary processes using Eagle Station and Ungrouped pallasite meteorites

该项目将利用通过同步加速器X射线光电子显微镜(X-PEEM)进行的古地磁分析的新方法来搜索和测量鹰站(ES)和未归类的软岩的金属纳米结构的存在和磁场强度，以深入了解它们的母体的古代磁场发展的条件。辅助电子探针分析将被用来限制它们的金属相的化学演化，并提供对其他经过充分研究的陨石群潜在的地球化学和成因关系的洞察。这些方法将共同为进一步深入了解仍有争议的石质铁粉陨石类陨石的形成机制所涉及的行星过程提供进一步的洞察，包括岩石成因的铁火山学模型：拟议的16心理小行星的起源模型，该小行星是美国宇航局于2023年10月13日发射的最近一次任务的目标。最初被认为是剥离的行星核心，新的密度测量16普瑞克现在读到的密度低于岩浆铁，这表明要么是灾难性撞击后松散固结形成的大孔结构，要么是16普瑞克在组成上更接近于石铁天体。

This project will utilize novel methods of paleomagnetic analysis through synchrotron X-ray photoemission electron microscopy (X-PEEM) to search for, and measure, the presence and magnetic intensities of metallic nanostructures for Eagle Station (ES) and Ungrouped pallasites to gain insight on the conditions under which ancient magnetic fields of their parent bodies develop. Supplementary electron microprobe analysis will be utilized to constrain the chemical evolution of their metal phases and provide insight into potential geochemical and genetic relationships to other well studied meteorite groups. These methods will collectively provide further insight into the planetary processes involved in the, still debated, mechanisms of formation of the stony-iron pallasite class of meteorites including the ferrovolcanism model of petrogenesis: a proposed origin model of the 16 Psyche asteroid, the target of the most recent NASA mission launched on 13 October, 2023. Originally thought to be a stripped planetary core, new density measurements of 16 Psyche now read a lower density than magmatic iron, indicating either a macroporous structure from loose consolidation after catastrophic impact, or that 16 Psyche is closer to that of a stony-iron body in composition.