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

提供资金支持美国与挪威研究人员合作开展一项合作项目，对灭绝的艾吉尔海岭进行采样，然后进行陆上地球化学分析和地球动力学建模。挪威联合项目负责人在该地区的地球物理现场工作和地质采样方面拥有丰富的经验，并将提供约 10 天的运输时间以及必要的设备来疏通埃吉尔山脊轴线的裸露陡坡。 将进行主量元素和微量元素研究以及同位素（Pb、Nd、Hf、Sr）分析，并开发大陆裂谷-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况进行定量测试。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.