Geophysical Studies of Oldest Archean Crust in West Greenland

伊苏亚上地壳岩石及其周围的片麻岩是世界上最古老的岩石之一，对于大陆地壳的研究来说确实是独一无二的。西格陵兰剖面还代表了一些已知的暴露程度最高、研究最透彻的太古宙岩石，因此构成了地球物理研究的主要目标。主要研究对象包括nordlanddet麻粒岩地形、花岗质和斜长花岗岩侵入物、灰色基底片麻岩、Isua上地壳岩石和沿海地壳过渡。由于缺乏对这个最古老的太古宙地壳的地球物理解释，因此确定三维关系将大大有助于了解早期地球地壳过程。这次调查将包括该地区的重力测量和重磁解释。

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.