Geophysical Studies of Oldest Archean Crust in West Greenland

伊苏阿表壳岩及其周围的片麻岩是 世界上最古老的岩石，是真正独特的研究 大陆地壳 西格陵兰部分也代表了一些 最好的暴露和最好的研究已知的太古代岩石， 构成了地球物理研究的主要目标。 主要目标 包括Nordlandet麻粒岩地形，花岗岩和 斜长侵入岩、灰色基底片麻岩、Isua 地壳上的岩石，以及沿着海岸的地壳过渡。 以来 对这个最古老的太古代地壳缺乏地球物理解释， 三维关系的确定将大大有助于 了解早期地球的地壳过程。 这次调查 将包括重力测量、重力和磁力解释 在这个地区。

The Isua supracrustal rocks and their surrounding gneisses are among the world's oldest rocks and are truly unique for the study of continental crust. The West Greenland section also represents some of the best-exposed and best-studied Archean rocks known and thus constitute a prime target for geophysical studies. Primary objectives of this study include the Nordlandet granulite terrain, granitic and anorthositic intrusives, the gray basement gneisses, the Isua supracrustal rocks, and the crustal transition along the coast. Since geophysical interpretations for this oldest Archean crust are lacking, determination of 3-D relationships should contribute greatly to an understanding of early Earth's crustal processes. This investigation will include a gravity survey and gravity and magnetic interpretation for this area.