Geodynamics of the active continental mantle lithosphere

活动大陆地幔岩石圈的地球动力学

• 批准号: 227409-2009
• 负责人: Pysklywec, Russell
• 金额: $ 2.91万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=496971
• 关键词: Geodynamics; active; continental; mantle; lithosphere

The proposed research will investigate the dynamics of the active continental mantle lithosphere (i.e., sub-crustal lithosphere) and its relationship to crustal tectonics. The mantle lithosphere makes up the largest component member of the tectonic plates, but compared to the overlying crust and fluid mantle below, its evolution is little studied and poorly understood. The research program will make tangible advancements in our understanding of this part of the Earth by addressing questions in three environments where continental mantle lithosphere is/was tectonically active: (1) what happens to consumed mantle lithosphere plate at a continental plate collision?; (2) How/why are large blocks of mantle lithosphere missing at various locations around the Earth?; (3) How did the different natural (atmospheric, solid Earth) environment during the Earth's infancy in the Archean change the way mantle lithosphere behaved? The research program will try to answer these questions by a cross-disciplinary "top-down" methodology, wherein new and developing techniques of computational and laboratory modeling of dynamic Earth processes will be integrated with associated geological/geodetic/geophysical observational constraints.

拟议的研究将研究活跃的大陆地幔岩石圈（即亚腐蚀性岩石圈）的动力学及其与地壳构造的关系。 地幔岩石圈构成了构造板中最大的成分，但是与下面的地壳和液体地幔相比，其进化很少进行，并且了解不足。 该研究计划将通过在三种环境中解决大陆地幔岩石圈是/是构造活动的三个环境中的问题，从而在我们对地球的这一部分的理解中取得了切实的进步：（1）在大陆板碰撞处消耗的地幔岩石圈板会发生什么？ （2）在地球周围的各个位置都缺少大块地幔岩石圈的大块？ （3）在大将在大将期间，不同的自然（大气，固体）环境如何改变地幔岩石圈的表现方式？ 该研究计划将尝试通过跨学科的“自上而下”方法来回答这些问题，其中，动态地球过程的新的和开发的计算和实验室建模技术将与相关的地质/地球/地球物理观察限制集成。