The Eurekan deformation is a partially contractional Cenozoic tectonic event that affected large parts of the Arctic region. In the study area on northern Ellesmere Island, major NE-SW trending strike-slip faults occur, which are related to the Eurekan deformation. The outcrop data show that left-lateral strike-slip kinematics slightly dominate, but also right-lateral kinematics were documented. Cross-cutting relationships of the individual faults give evidence for multiple fault reactivations within major strike-slip zones. The reconstructed paleostress fields show two phases. The first phase started with a N-S compression and shifted over a NNE-SSW compression into a NNW-SSE compression. The second phase was a WNW-ESE compression. The paleostress field evolution reflects the movements of Greenland. During the Eurekan phase 1, Greenland moved northward and during Eurekan phase 2 it moved to the WNW. These motions likely controlled the stress field on northern Ellesmere Island. From the paleostress field analyses and the orientation of the strike-slip faults in the study area, it can be derived that the Eurekan phase 1 deformation is characterized by left-lateral strike-slip faults, whereas most-likely during Eurekan phase 2 the majority of right-lateral strike-slip faults formed. The paleostress field analysis implies that many Eurekan faults are reactivated Ellesmerian faults. Recent seismic events indicate ongoing tectonic activity at some of the major strike-slip faults. This sheds new light on the geodynamics of northern Ellesmere Island, which was mechanically coupled to the Greenland plate, and implies that under the recent stress field, earthquakes at strike-slip faults are still possible and some of these faults were active in at least three phases over the last 350 Myr.

尤里坎变形是部分收缩的新生代构造事件，影响了北极地区的大部分地区。在北埃勒斯米尔岛的研究区，发生了主要的NE-SW趋势走滑断层，这与Eurekan变形有关。露头数据表明，左侧走滑运动学略占主导，但也记录了右侧运动学。单个断层的横切关系为主要走滑带内多次断层复活提供了证据。重建的古应力场显示出两个阶段。第一阶段从NS压缩开始，然后从NNE-SSW压缩转换为NNW-SSE压缩。第二阶段是WNW-ESE压缩。古应力场的演化反映了格陵兰的运动。在Eurekan阶段1 格陵兰向北移动，在尤里坎第二阶段，它移到了西北西北。这些运动可能控制了北部埃尔斯米尔岛的应力场。从古应力场分析和研究区走滑断裂的方向，可以推论出尤里坎1期变形的特征是左侧走滑断裂，而尤里坎2期最可能是形成了右旋走滑断层。古应力场分析表明，许多Eurekan断层是重新激活的Ellesmerian断层。最近的地震事件表明在一些主要的走滑断层处正在进行的构造活动。这为以机械方式耦合到格陵兰板块的北部埃尔斯米尔岛的地球动力学提供了新的思路，并暗示在最近的应力场下，