RUI: Structure and Tectonic Affinity of Rocks in the Core of the Coast Mountains, Douglas Channel, British Columbia

RUI：不列颠哥伦比亚省道格拉斯海峡海岸山脉核心岩石的结构和构造亲和力

• 批准号: 9405173
• 负责人: Margaret Rusmore
• 金额: $ 12.65万
• 依托单位: Occidental College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1998-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9405173&HistoricalAwards=false
• 关键词: RUI; Structure; Tectonic; Affinity; Rocks

9405173 Rusmore One of the most for reaching tectonic problems of Northwestern US geology is the discrepancy between contrasting paleogeographic models suggested by paleomagnetic data (far traveled terranes) and much geologic findings (more autochthonous terranes). Similarly, there are several structural elements in the Coast Mountains orogen of western British Columbia and SE Alaska whose tectonic significance is unclear. This RUI project will address many of thee issues through field work along the Douglas Channel. British Columbia that provides a natural cross-strike set of exposures. The work will be directed towards answering structural questions about the history of the Coast shear zone, the tectonic affinity and structural getting of metamorphic rocks thought to be Nisling terrane rocks and the relation of these rocks to Stikinia. Results will clarify many of the presently poorly known structural elements in this area and will lead to resolving the question of whether outboard terranes moved northward by more than 2500 km or if they essentially are near where they formed.

小行星9405173 美国西北部地质学最具影响力的构造问题之一是由古地磁数据（远距离旅行的岩石）和许多地质发现（更多的原地岩石）提出的对比古地理模型之间的差异。 同样，在不列颠哥伦比亚省西部和阿拉斯加东南部的海岸山脉造山带中也有几个构造单元，其构造意义尚不清楚。 这个RUI项目将通过沿着道格拉斯海峡的实地工作来解决许多问题。 不列颠哥伦比亚省，提供了一个自然的交叉走向曝光集。 这项工作将针对回答有关海岸剪切带的历史，构造亲和性和被认为是Nisling岩石的变质岩的结构获得以及这些岩石与Stikinia的关系的结构问题。 结果将澄清许多目前鲜为人知的结构元素在这一领域，并将导致解决的问题，是否舷外的沉积物向北移动超过2500公里，或者如果他们基本上是附近的地方，他们形成。