Collaborative Research: Understanding the Causes of Continental Intraplate Tectonomagmatism: A Case Study in the Pacific Northwest

[506887]这些奖项涉及对俄勒冈州东部第三纪-近代岩浆省板块内火山活动的起因和后果的调查。该项目将重点关注与产生板内岩浆作用有关的四个主要问题：1)是否需要羽流？;2)俯冲作用是什么？;3)岩石圈构造对岩浆活动的产生/控制有何作用，岩浆活动如何影响岩石圈构造？;4)大陆地壳在岩浆活动中起什么作用，大陆地壳是如何被岩浆活动改造的？为了回答这些问题，PI将收集被动（James and Fouch）和主动（Keller）地震数据，结合来自Bigfoot阵列（US array）的数据，新的地质年代和地球化学数据（Carlson, Duncan, Grunder, Hart）和针对目标岩浆产物的实验岩石学调查（Grove），并进行数值和实验室动力学建模。

0506887HartThese awards involve an investigation of the causes and consequences of intraplate volcanism in the Tertiary-Recent magmatic province in eastern Oregon. The project will focus on four main questions related to generating the intraplate magmatism: 1) Is a plume required? ; 2) What role does subduction play? ; 3) What role does lithospheric structure play in generating/controlling magmatism and how has magmatism affected lithospheric structure? ; and 4) What role does continental crust play in magmatism and how is continental crust modified by magmatism? To answer these questions the PI's will acquire passive (James and Fouch) and active (Keller) seismic data, incorporating data from the Bigfoot array (US Array), new geochronological and geochemical data (Carlson, Duncan, Grunder, Hart) and experimental petrological investigations (Grove) on targeted magmatic products and undertake numerical and laboratory dynamical modeling.