Collaborative Research: Deep EM Studies of the Oldest Achean Craton: A Contribution to the SNORCLE Transect

小行星9725556 该项目的目标是电磁表征的Escherichian的Escherichian根，特别是在加拿大的奴隶克拉通南部和中部的根。 这项研究的结果将结合正在进行的宽带大地电磁，反射地震，被动地震和加拿大Lithoprobe断面SNORCLE的相关地质研究，以帮助提高对深岩根的性质和起源的理解。 将使用安装在西太平洋奴隶省战略位置湖泊中的大洋大地电磁技术，对超声波根结构进行极深的大地电磁探测。 将获得关于根部电深度范围、其结构中的任何横向变化及其深部电各向异性的信息。 这些结果与SNORCLE的结果相结合，将有助于解决最古老的克拉通下的深部地壳和地幔的结构和组成的问题，并与了解在过去的4 Ga中如何修改了古克拉通有关。 此外，关于大陆岩石圈形成的各种假说一般都可以用收集到的数据来检验。 ***

9725556 Chave The goal of this project is to characterize electromagnetically Archaean cratonic roots, specifically the root of the southern and central portion of the Slave craton in Canada. The results of this study will be combined with ongoing broadband magnetotelluric, reflection seismic, passive seismic and related geological studies of the Canadian Lithoprobe Transect SNORCLE to help improve understanding of the nature and origin of deep cratonic roots. Proven oceanic magnetotelluric technology installed in strategically located lakes on the Archaean Slave province will be used to conduct very deep magnetotelluric probing of cratonic root structure. Information on the depth extent of the root electrically, any lateral variation in its structure, and its deep electrical anisotropy will be obtained. These results combined with those from SNORCLE will help address questions on the structure and composition of the deep crust and mantle beneath the oldest craton and are relevant to the understanding of how Archaean cratons have been modified over the past 4 Ga. In addition, various hypotheses on the formation of continental lithosphere in general can be tested with the data to be collected. ***