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

EAR PF：中元古代晚期时间等效高低纬度岩浆事件的地磁古强度

基本信息

批准号：
1045635
负责人：
Nicholas Swanson-Hysell
金额：
$ 8.5万
依托单位：
Swanson-Hysell Nicholas L
依托单位国家：
美国
项目类别：
Fellowship Award
财政年份：
2011
资助国家：
美国
起止时间：
2011-09-01 至 2014-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1045635&HistoricalAwards=false
关键词：
EAR PF Geomagnetic paleointensity time

项目摘要

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.

Nicholas L.博士Swanson-Hysell已获得博士后奖学金，在明尼苏达大学开展研究和教育计划。他将研究1.1左右的同生火成岩。10亿年前，它们位于不同的纬度，记录了当时地球磁场的特征。调查的重点是从北美大陆中部裂谷（来自北方明尼苏达州和安大略）和乌姆孔多大火成岩省（来自南非和博茨瓦纳）的熔岩和侵入体中获得磁性古强度记录。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取决于纬度，并研究磁场强度如何随时间变化。因此，可以准确地重建过去大陆的位置和地核的演化。 Nicholas Swanson-Hysell博士将为主办机构和卡尔顿学院的课程开发课程活动。这些练习将在复杂性和深度范围，并会在某些情况下，有学生进入现场收集样本，然后在实验室分析。本科生也将参与该项目本身的研究，并将陪同博士斯旺森希塞尔进入该领域在该项目的两个领域的季节。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。