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

EAR-0452220基金该项目为位于哥伦布市主校区的俄亥俄州立大学地质科学系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基金和俄亥俄州立大学的匹配提供了技术人员年薪总和的1 FTE。放射性成因同位素实验室位于一流的物理空间。它拥有用于样品处理和制备的设施，包括一间洁净室套间，以及用于用热电离和惰性气体质谱仪进行分析的设施，以及支持研究测量的全套辅助设备。该实验室对不同和广泛的问题进行同位素、地球化学和年代学研究。目前研究的主要同位素体系有Rb-Sr、Sm-ND、U-Pb、K-Ca和K-Ar，尤其是~(40)Ar/~(39)Ar。研究既包括使用放射性同位素(例如，锶、钕和铅)的同位素示踪研究，也包括地质年代学测定(例如，40Ar/39Ar和Rb-Sr)。总体而言，研究目标从基础性和方法性到应用性和专题。国际和平研究所和俄亥俄州立大学的同事以及一些正在进行合作和合作项目的外部科学家开展了各种不同的研究活动。中心科学目标既是方法论的，也适用于当前的学科，从环境和水文(如饮用水中的铅、溪水中的锶)到古气候(如近代至古生代)、各种地质(如玄武岩成岩作用、热年代学、微米级金矿床)到纯粹的地球化学(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).