Slave2Rae: The Lithospheric Structure of Ancient Cratons

[00:87699 . chave]该项目的总体目标是更好地了解地幔如何参与太古宙克拉通的生长和稳定，这些克拉通是形成大陆核心的最古老的岩石。深探测自然源的电磁学研究表明，它们可以通过定义岩石圈的基底和确定地幔内部的结构特征，对这一认识作出重大贡献。在以前的国家科学基金会的支持下，主要研究人员在加拿大西北部（奴隶省）增加了一个名为SNORCLE的多学科努力，这是加拿大岩石探测计划的一部分。这是通过利用漂浮飞机在湖泊中部署的海洋大地电磁仪器完成的。由于预算限制，这项湖底活动的经费只包括对数据的初步分析；从本质上讲，这是一项初步研究。该合同将允许p.i.进行彻底的分析和建模工作。****

0087699Chave The overall goal of the project is a better understanding of how the mantle participated in the growth and stabilization of Archean cratons, which are the oldest rocks that form the nuclei of the continents. Deep probing natural source electromagnitic studies have demonstrated that they can contribute substantially to this understanding by defining both the base of the lithosphere and by determining structural features within the mantle. Under previous NSF support, the principal investigators augmented a multidisciplinary effort called SNORCLE in northwest Canada (Slave province) that was part of the Canadian Lithoprobe program. This was accomplished by utilizing oceanic magnetotelluric instrumentation deployed in lakes from float airplanes. Due to budget restrictions the funding for this lake-bottom activity did not cover more than a preliminary analysis of the data; in essense, a pilot study. This award will allow the P.I.s to carry out a thorough analysis and modeling effort.****