Uplift History of the Ellsworth Mountains, Antarctica

该项目将利用磷灰石裂变径迹分析，研究南极洲埃尔斯沃斯山脉的隆升历史。在1989-90年的野外季节，一个四人小组将从帐篷营地使用雪地摩托进行收集。采样策略是收集埃尔斯沃斯山脉的三个水平横断面，以及最大起伏区域的三个垂直剖面。亚利桑那州立大学裂变径迹测年实验室将从返回的样品中分离磷灰石，并通过外部探测器方法进行计数。还将进行轨道长度研究。该项目将试图确定抬升开始的时间、抬升速率、抬升的量以及是否发生了一次以上的抬升。埃尔斯沃斯山脉是南极洲西部的微板块拼贴之一，它们在冈瓦那分裂期间和/或之后相互移动。这个项目将限制这些运动的时间。

The project will address the uplift history of the Ellsworth Mountains, Antarctica, using apatite fission track analysis. Collections will be made during the 1989-90 field season by a four-person party working with snowmobiles from tent camps. The sampling strategy is to collect three horizontal transects of the Ellsworth Mountains, and three vertical profiles on areas of maximum relief. Apatite will be separated from returned samples and processed for counting by the external-detector method in the Fission-Track Dating Laboratory at Arizona State University. Track length studies will also be performed. The project will attempt to determine the time of initiation of uplift, uplift rates, the amount of uplift, and whether more than one episode of uplift has occurred. The Ellsworth Mountains are one of a collage of microplates in West Antarctica which moved relative to each other during and/or subsequent to the breakup of Gondwana. This project will constrain the timing of these movements.