EAR PF: Geomagnetic paleointensity from time-equivalent high and low latitude magmatic events in the late Mesoproterozoic

Nicholas L. Swanson-Hysell博士获得EAR博士后奖学金，在明尼苏达大学开展研究和教育计划。他将在1.1左右研究同生火成岩。它们被放置在不同的纬度，记录了当时地球磁场的特征。调查将集中于从北美大陆中部裂谷（来自明尼苏达州北部和安大略省）和乌姆孔多大火成岩省（来自南非和博茨瓦纳）的熔岩和侵入体中发展古磁强度记录。这些古强度数据将用于评估偶极磁场的强度是否可预测地依赖于纬度，并检查磁场强度如何随时间变化。这样，就可以精确地重建过去大陆的位置和地核的演变。尼古拉斯·斯旺森-海塞尔博士将为主办机构和卡尔顿学院的课程开发课程活动。这些练习的复杂性和深度不等，在某些情况下，学生将进入实地收集样本，然后在实验室进行分析。本科生也将参与项目本身的研究，并将在项目的两个实地季节陪同斯旺森-希塞尔博士进入实地。作为这项研究的结果发表的所有数据将贡献给MagIC数据库，并提供给科学界。

Dr. Nicholas L. Swanson-Hysell has been granted an EAR Postdoctoral Fellowship to carry out a research and education plan at the University of Minnesota. He will examine contemporaneous igneous rocks about 1.1. billion years old that were emplaced at different latitudes, recording the characteristics of the Earth's magnetic field at the time. The investigation will focus on developing magnetic paleointensity records from lavas and intrusions of the North American mid-continent rift (from Northern Minnesota and Ontario) and the Umkondo large igneous province (from South Africa and Botswana). These paleointensity data will be used to evaluate whether the strength of a dipolar magnetic field is predictably dependent on latitude and to examine how the strength of the magnetic field changed through time. Thus, accurate reconstructions of the position of the continents in the past and the evolution of the Earth's core can be made. Dr. Nicholas Swanson-Hysell will develop curricular activities for courses both at the host institution and Carleton College. These exercises will range in complexity and depth and will, in some cases, have students go into the field to collect samples that they then analyzed in the laboratory. Undergraduate students will also be involved in research for the project itself and will accompany Dr. Swanson-Hysell into the field during the project's two field seasons. All data published as a result of this study will be contributed to the MagIC database and made available to the scientific community.