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

该项目研究南极洲杜菲克火成岩杂岩中的残余磁化。它的主要目标是了解中生代偶极低(MDL)期间地球磁场的变化，这一时期地球磁场经历了戏剧性的减弱和快速逆转。这项工作将确定MDL的时间和性质，并评估反转率、地磁强度和方向性变化与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，以确定冷却速度对磁性特征的影响，并了解杜菲克作为火成体的组装。研究很少，Dufek是世界上最大的侵入岩之一，它的形成与冈瓦那的解体有关。该项目的更广泛影响包括研究生和本科教育，以及与德国和智利的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.