Collaborative Research: Hotspot Rift Interaction & Geochemistry of the North Atlantic Mantle: A U.S.-Norwegian Expedition to Sample the Aegir Ridge "Hole" in the Iceland Hots

提供的资金用于支持美国与挪威调查人员合作的一个项目，该项目旨在对已灭绝的Aegir Ridge进行采样，随后进行陆上地球化学分析和地球动力学建模。挪威联合PIS在该地区的地球物理野外工作和地质采样方面拥有丰富的经验，将提供约10天的船期以及必要的设备来疏浚宙斯盾海脊轴线裸露的悬崖。将进行常量元素和微量元素研究以及同位素(铅、钕、氢、锶)分析，并将开发大陆裂谷-热点相互作用的3D数值模型，该模型将定义解释数据所需的物理条件，包括对可能的地质情景进行定量测试。该项目为学生提供培训，并促进国际合作。

Funds are provided to support the U.S. contribution to a collaborative program with Norwegian investigators to sample the extinct Aegir Ridge, followed by onshore geochemical analyses and geodynamic modeling. Norwegian co-PIs have extensive experience in geophysical field work and geologic sampling in this region and will provide ~10 days of ship time as well as the necessary equipment to dredge the exposed scarps of the Aegir ridge axis. Major- and trace-elements studies, as well as isotope (Pb, Nd, Hf, Sr) analyses will be performed and 3D numerical models of continental rift-hotspot interaction will be developed which will define the physical conditions needed to explain the data, including quantitatively testing of the possible geologic scenarios.The project provides training for students and promotes international collaboration.