Late proterozoic stratigraphy of northwestern Canada and its record of earth system evolution

该研究计划的目的是利用加拿大西北部晚元古代(约1200-540 Ma)的地层记录，重建北美西北缘的构造史，并解决通往显生界的地球系统演化的突出问题。这项跨学科的研究将结合严格的实地工作、最先进的地球化学技术和创新的气候-地球化学模型，以限制北美西北部从罗迪尼亚超大陆分裂的时间和性质，识别以前相邻的大陆碎片，确定裂谷作用和相关的岩浆作用对全球气候的影响，并校准地球表面环境中重要生物地球化学变化的时间和节奏。实地考察工作将集中在育空和西北地区，那里的元古界内部和带已经成为解决这些具有全球意义的问题的关键地点。我的研究小组每年夏天将花大约4周的时间进行这项实地工作，这将需要直升机运送到否则无法到达的山区。

The aim of this proposed research program is to use the late Proterozoic (c. 1200-540 Ma) stratigraphic record of northwestern Canada to reconstruct the tectonic history of the northwestern margin of North America and address outstanding questions about the evolution of the Earth system leading into the Phanerozoic Eon. This interdisciplinary research will combine rigorous fieldwork with state-of-the-art geochemical techniques and innovative climate-geochemical modeling to constrain the timing and nature of northwestern North America's break-up from the supercontinent Rodinia, identify the formerly adjacent continental fragments, determine the influence of rifting and associated magmatism on global climate, and calibrate the timing and tempo of important biogeochemical changes within Earth's surface environment. The fieldwork will be centered on the Yukon and Northwest territories, where Proterozoic inliers and belts have emerged as key localities for addressing these questions of global significance. My research group will spend about 4 weeks each summer carrying out this field work, which will require helicopter transport to mountainous terrain that is otherwise inaccessible.