Age Constraints on Tectonism and Metamorphism in the Scandinavian Caledonides

9418264斯堪的纳维亚加里多尼德山脉为研究与大陆碰撞有关的事件和过程提供了一个不同寻常的机会，因为它相对简单，只涉及一个造山旋回，并且被侵蚀，使异地和原地岩石都暴露出来。该项目与挪威和瑞典的研究人员合作，旨在改善对构造过程的时间限制，例如俯冲导致高压变质作用和通过主要逆冲叠加作用组装构造地层学。详细的地质年代学研究将使用高精度的U-Pb等方法，直接测定关键地区的变质作用和变形组构。结合野外构造研究的结果，将导致对这一经典造山带发展的更准确的理解。

9418264 Gromet The Scandinavian Caledonides provide an unusual opportunity to study events and processes associated with a continental collision because it is relatively simple, involving a single orogenic cycle, and is eroded so that both allochthonous and autochthonous rocks are exposed. This project, in conjunction with researchers in Norway and Sweden, is directed at providing improved time constraints on tectonic processes such as subduction leading to high-pressure metamorphism and assembly of a tectonostratigraphy by major thrust imbrication. Detailed geochronlogic studies will use high-precision U-Pb and other methods to directly date metamorphism and deformational fabrics in key areas. Results, along with field structural studies, will lead to more precise understanding of the development of this classic orogen.