Paleomagnetic Studies Designed to Refine the Misozoic Paleo-position of the Antarctic Penninsula and Test Models of Weddell Sea Opening

该项目将通过采集中生代南极半岛岩石的古地磁样品，继续研究南极西部的地质史和南极西部与东部的关系。确定不同西南极地壳块体的位置对于理解韦德尔海的开放历史以及由此产生的韦德尔海开放的古气候、古海洋和古生物意义至关重要。希望通过系统采集三叠纪至晚白垩世的古地磁样品，为南极半岛建立更完整的视极游走路径。这种极地漫游路径可以帮助限制南极半岛相对于东南极的位置，并提供关于韦德尔海开放时间的信息。该野外计划依赖于R/V极地公爵的密切支持，从南极的沉积、火山和侵入岩石中收集古地磁样本。补充资金将允许购买设备，用于现场分析古地磁数据。

This project will continue studying the geologic history of West Antarctica and the relationship of West to East Antarctica by collecting paleomagnetic samples from Mesozoic age Antarctic Peninsula rocks. Resolving the position of the different West Antarctic crustal blocks is critical in understanding the opening history of the Weddell Sea and the resulting paleo-climatic, paleo-oceanographic and paleo- biologic implications of the Weddell Sea opening. It is hoped that by systematically collecting paleomagnetic samples ranging in age from the Triassic through late Cretaceous that a more complete apparent polar wander path can be constructed for the Antarctic Peninsula. Such a polar wander path can help constrain the position of the Antarctic Peninsula with respect to East Antarctica and provide information on the time of opening of the Weddell Sea. The field program depends in the close support from the R/V Polar Duke to collect paleomagnetic samples from sedimentary, volcanic and intrusive rock from the Antarctic. Supplemental funds will allow the purchase equipment for the field analysis of paleomagnetic data.