Technician Support: Ohio State University, Radiogenic Isotopes Laboratory - Phase II

该项目为位于哥伦布主校区的俄亥俄州州立大学地质科学系的放射性同位素实验室提供技术支持。 该实验室进行各种研究，由两名具有多年经验的熟练技术人员提供必要的帮助和服务。 NSF的资金与来自俄亥俄州州立大学的配套资金一起提供了一个FTE的技术人员年薪。 放射性同位素实验室位于一流的物理空间。 它具有样品处理和制备设施，包括一个洁净室套件，以及用于热电离和惰性气体质谱仪分析的设施，以及支持研究测量的全套辅助设备。 该实验室对各种广泛的问题进行同位素地球化学和地质年代学研究。 目前研究的主要同位素体系是Rb-Sr、Sm-Nd、U-Pb、K-Ca和K-Ar，特别是40 Ar/39 Ar技术。 研究包括同位素示踪研究，使用放射性同位素（例如，Sr、Nd和Pb）和地质年代学测定（例如，40Ar/39Ar和Rb-Sr）。 总体而言，研究目标范围从基础和方法到应用和专题。 PI和俄亥俄州州立大学的同事以及一些外部科学家正在进行的合作和合作项目开展了广泛的各种研究活动。 中心科学目标既有方法论意义，又适用于环境和水文等当前主题（例如，饮用水中的Pb，溪流中的Sr）到古气候（例如，近古生代）到不同的地质（例如，玄武岩岩石成因、热年代学、微米Au矿床）到纯地球化学（例如，Ar在矿物中的保留和行为）。

EAR-0452220FolandThis project provides technical support to the Radiogenic Isotope Laboratory in the Department of Geological Sciences at Ohio State University on the main campus in Columbus. This laboratory conducts varied research that receives essential assistance and service by two skilled technicians with many years of experience. NSF funds together with matching from Ohio State University provide one FTE of combined annual technician salary. The Radiogenic Isotope Laboratory is housed in first-class physical space. It has facilities for sample processing and preparation, including a cleanroom suite, and for analysis with thermal-ionization and noble-gas mass spectrometers, plus a full array of ancillary equipment to support the research measurements. The laboratory conducts isotope geochemical and geochronologic research on diverse and wide-ranging issues. The principal isotopic systems of current investigation are Rb-Sr, Sm-Nd, U-Pb, and K-Ca and also K-Ar especially with the 40Ar/39Ar technique. Studies include both isotope tracer research, using the radiogenic isotopes (e.g., Sr, Nd, and Pb), and geochronologic determinations (e.g., 40Ar/39Ar and Rb-Sr). Overall, the research objectives range from the fundamental and methodological to the applied and topical. A broad cross section of the varied research activities are undertaken by the PI and Ohio State University colleagues as well as a number of external scientists with on-going collaborative and cooperative projects. The central scientific objectives are both methodological and applied with current subjects ranging from environmental and hydrologic (e.g., Pb in drinking water, Sr in stream water) to paleoclimatic (e.g., Recent to Paleozoic) to diverse geological (e.g., basalt petrogenesis, thermochronology, micron Au deposits) to purely geochemical (e.g., Ar retention and behavior in minerals).