Structural History of the Arctic Margin of Eastern Alaska and Northwestern Canada and its Implication on Evolution of the Canada Basin

对加拿大盆地的构造历史知之甚少 以及加拿大西北部阿拉斯加北极边缘的中生代历史 是解决这个问题的关键 海洋地壳的磁性数据 加拿大盆地的定义模糊不清，无法区分（1） 阿拉斯加北方边缘的逆造山带旋转 远离加拿大北极群岛约一个极旋转新 麦肯齐三角洲;（2）一条主要左旋转换断层 允许北方阿拉斯加向南迁移。 两 模型预测了布鲁克斯东部不同的构造状态 山脉、麦肯齐三角洲和黑河-奥利维山脉地区 在中生代，该项目将通过以下方式解决这个问题： 沿着豪猪河断层的构造和运动学研究 系统及邻近地区。 空间变化的几何 从前寒武纪到 新生代岩石和变形年龄都可以从 地层和火成岩侵入关系。 的结果 这一研究将加深我们对构造演化的认识 加拿大盆地和邻近的北极地区，也将 与该地区的石油勘探有关。

The tectonic history of the Canada Basin is poorly understood and the Mesozoic history of the Arctic margin of Alaska & NW Canada is critical to this problem. Magnetic data from the oceanic crust of Canada Basin are ambiguous and cannot distinguish between (1) anticlockwise oroclinal rotation of the northern margin of Alaska away from the Canadian Arctic Islands about a pole of rotation new the MacKenzie delta, and (2) a major left-lateral transform fault to permit the southerly migration of northern Alaska. The two models predict different structural regimes for the eastern Brooks Range, MacKenzie delta, and Black River-Oglivie Mountains regions during the Mesozoic this project will address the problem by structural and kinematic studies along the Porcupine River fault system and adjacent areas. Spatial variations in the geometry of superposed structures will be documented from Precambrian through Cenozoic rocks, and ages of deformation all be established from stratigraphic and igneous intrusion relationships. The results of this study will improve our understanding of the tectonic evolution of the Canada Basin and the adjacent Arctic region, and will also have relevance to oil exploration in the area.