Upgrade of community-orientated ICP-MS facilities for teaching and research at the University of Michigan

该奖项将提供资金，以取代12岁，集体所有，以社区为基础的高分辨率电感耦合等离子体质谱仪（HR-ICP-MS）。更新密歇根大学的ICP-MS设施将为了解地表地质、海洋系统、环境科学、区域气候和冰下过程提供传统和新颖的工具，并将是地球与环境科学系基础设施的重大改进。对密歇根大学的持续基础设施支持也将成为东南密歇根地区其他地方大学的一种资源，通过更新和重新装备HR-ICP-MS能力支持的研究项目包括：海洋沉积物和碳酸盐档案的微量元素地球化学，以确定过去的环境和人为影响，包括干旱、洪水、海洋-大气动力学和海洋表面温度的替代记录;陆地沉积物、古土壤和古沉积单元的痕量和稀土元素地球化学，以重建古氧化还原、古大气CO2和盆地环境;主要和痕量元素浓度，以阐明控制冰川地形化学通量时空变化的因素;放射性重同位素浓度，以准确确定冰盖内最深冰的年龄;通过同位素稀释法测定放射性同位素浓度，作为用于研究年轻构造史和气候-构造相互作用的铀-钍/氦热年代学方法的一部分;从化石到蛋白质的生物物质的地球化学;痕量金属的地球化学，包括金属在环境中的释放、迁移和生物积累。

This award will provide funds to replace the 12 year old, collectively-owned, community-based High Resolution Inductively Coupled Plasma Mass Spectrometer (HR-ICP-MS). Updating the ICP-MS facilities at the University of Michigan will provide both traditional and novel tools to understanding surface geology, marine systems, environmental science, regional climate and subglacial processes, and will be a significant infrastructure improvement to the Department of Earth and Environmental Sciences. Continued infrastructure support to the University of Michigan will also be a resource to other local universities in the SE Michigan region.Research projects supported by the updating and retooling of HR-ICP-MS capabilities include: trace element geochemistry of marine sediments and carbonate archives to determine past environments and anthropogenic influence including proxy records of droughts, floods, ocean-atmosphere dynamics and sea surface temperature; trace and REE geochemistry of terrestrial sediments, paleosols and ancient sedimentary units, to reconstruct paleo-redox, ancient atmospheric CO2, and basin environments; major and trace element concentrations to elucidate factors controlling spatial and temporal variations in chemical fluxes from glaciated terrains; radioactive heavy isotope concentrations to accurately determine the age of the deepest ice within ice sheets; radioactive isotope concentrations by isotope dilution, as part of the U-Th/He thermochronology method used to study young tectonic histories and climate-tectonic interactions; the geochemistry of biological material from fossils to proteins; and the biogeochemistry of trace metals, including the release, transport and bioaccumulation of metals within the environment.