Collaborative Research: Role of Glaciers in the Exhumation and Topographic Development of the Active Chugach/St. Elias Orogen, Alaska

0001192 Meigs 0001239 Spotila气候变化、侵蚀和地壳变形之间可能存在反馈作用，这使人们把注意力集中在活动造山系统的地形上。 对变形、剥蚀和地形发展之间联系的研究是复杂的，主要利用河流系统而不是冰川系统。 冰川地区有一个独特的地形形式，这是不同于河流地形，但基本的关系，如如何平均地形与岩石隆起的模式基本上是未知的冰川侵蚀为主的景观。 该项目将通过研究阿拉斯加州的Chugach/St. Elias山脉，一个活跃变形的冰川造山带，来调查冰川侵蚀对地形、剥露和变形的长期后果。 结果将使变形和冰川作用如何影响造山地形在过去的几百万年的考验。 更好地理解冰川在山系中的作用将为岩石记录中古碰撞带的分析提供更完整的背景。

0001192 Meigs0001239 SpotilaThat feedbacks potentially exist between climate change, erosion, and crustal deformation has focused attention on the topography of active orogenic systems. Studies of linkages between deformation, denudation and topographic development are complex, and have primarily utilized fluvial rather than glacial systems. Glaciated regions have a characteristic topographic form that is distinct from that of fluvial terrains, however basic relationships such as how mean topography relates with patterns of rock uplift are essentially unknown for landscapes dominated by glacial erosion. This project will investigate the long-term consequences of glacial erosion for topography, exhumation and deformation by study of the Chugach/St. Elias Range, Alaska, an actively deforming glaciated orogenic belt. Results will enable testes of how deformation and glaciation have influenced orogenic topography over the last few million years. A better understanding of the role of glaciers in mountain system will provide a more complete context for the analysis of ancient collisional belts in the rock record.