Continued Technical Support for the W. M. Keck Isotope Laboratory

小行星9708361 该赠款为亚利桑那大学的技术人员提供了80，000美元的两年部分工资支持，以监督操作和维护，培训新用户，并利用W.M.的热电离质谱仪（TIMS）和电感耦合等离子体质谱仪（ICP-MS）开发地球化学分离和质谱技术。凯克同位素实验室本实验室积极应用同位素资料研究地壳、地幔演化和成矿机制。 具体的例子包括，在美国西南部用铼/锇同位素测年来限制成矿时代，墨西哥镁铁质-超镁铁质杂岩中铂族元素矿床的Re/Os同位素特征及地质构造的地球化学和年代学研究 该小组还在进行激光烧蚀与ICP质谱法相结合的开发工作，ICP质谱法是一种新兴的、潜在有前途的分析技术，用于固体地质样品中微量元素分布的微观研究。 ***

9708361 Ruiz This grant provides $80,000 two-years partial salary support for a technician at the University of Arizona to oversee operations and maintenance, train new users and develop geochemical separations and mass spectrometric techniques utilizing both the thermal ionization mass spectrometer (TIMS) and the inductively coupled plasma mass spectrometer (ICP-MS) in the W.M. Keck Isotope Laboratory. This lab is actively applying isotopic data to elucidate mechanisms of crustal and mantle evolution and metallogenesis. Specific examples include, Re/Os isotopic dating of molybdenite to constrain metallogenic epochs in the southwestern U.S., Re/Os isotopic characterization of platinum group element (PGE) deposits in mafic-ultramafic complexes and geochemical and geochronologic studies of the tectonics of Mexico. This group is also conducting developmental work on coupling laser ablation with ICP mass spectrometry, a newly burgeoning and potentially promising analytical technique for micro-scale studies of trace element distributions in solid geologic samples. ***