Collaborative Research: An Integrated Geomagnetic and Petrologic Study of the Dufek Complex

本项目研究南极洲Dufek火成岩杂岩的残余磁化。它的主要目标是了解中生代偶极子低（MDL）期间地球磁场的变化，这是一个地球磁场急剧减弱和快速逆转的时期。这项工作将解决MDL的时间和性质，并评估反转率，地磁强度和方向变化，以及大尺度地球动力学过程之间的联系。该项目还包括岩石学研究，以确定冷却速率对磁特征的影响，并了解Dufek作为火成岩体的组合。研究很少，Dufek是世界上最大的入侵之一，它的形成与冈瓦纳的分裂有关。该项目更广泛的影响包括研究生和本科教育，以及与德国和智利IPY项目的国际合作。

This project studies remnant magnetization in igneous rocks from the Dufek igneous complex, Antarctica. Its primary goal is to understand variations in the Earth's magnetic field during the Mesozoic Dipole Low (MDL), a period when the Earth's magnetic field underwent dramatic weakening and rapid reversals. This work will resolve the MDL's timing and nature, and assess connections between reversal rate, geomagnetic intensity and directional variability, and large-scale geodynamic processes. The project also includes petrologic studies to determine cooling rate effects on magnetic signatures, and understand assembly of the Dufek as an igneous body. Poorly studied, the Dufek is amongst the world's largest intrusions and its formation is connected to the break-up of Gondwana. The broader impacts of this project include graduate and undergraduate education and international collaboration with a German and Chilean IPY project.