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

该项目将继续研究 西南极洲和西向东的关系 南极洲中生代古地磁样品的采集 年代的南极半岛岩石。 解决以下问题： 不同的西南极地壳块体对于 了解威德尔海的开放历史， 古气候、古海洋和古 威德尔海开放的生物学意义 是 希望通过系统地收集古地磁 从三叠纪到晚白垩世 白垩纪发现了较完整的明显极移路径 可以为南极半岛建造。 这样的 极移路径可以帮助约束 南极半岛与东南极洲和 提供威德尔开放时间的信息 海 实地项目依赖于R/V的密切支持 极地杜克收集古地磁样本， 沉积岩、火山岩和侵入岩。 补充资金将用于购买 古地磁资料的野外分析

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.