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

这些奖项涉及对俄勒冈州东部第三纪-最近岩浆省板内火山活动的原因和后果的调查。该项目将重点研究与板内岩浆作用有关的四个主要问题：1)是否需要羽流？2)俯冲作用起什么作用？3)岩石圈结构在岩浆作用的产生/控制中起什么作用，岩浆作用如何影响岩石圈结构？4)大陆地壳在岩浆作用中起什么作用，岩浆作用如何改变大陆地壳？为了回答这些问题，PI将获得被动(James和Fuch)和主动(Keller)地震数据，包括来自BigFoot阵列(US阵列)的数据、新的地质年代学和地球化学数据(Carlson、Duncan、Grunderd、Hart)和关于目标岩浆产品的实验岩石学调查(Grove)，并进行数值和实验室动力学模拟。

0506972KellerThese 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.