Upgrade of Hardware, Computer and Peripheral Equipment Electron Microprobe Laboratory, University of Oklahoma

该合同为俄克拉何马大学地质与地球物理学院的电子微探针系统升级提供了55%的资金。大学承诺提供必要的剩余资金用于设备升级，其中包括现代化的计算机自动化舞台运动和分析功能，安装x射线衍射复合探测器用于分析轻元素，以及溅射涂层机用于非导电样品的碳涂层。升级后的系统需要满足俄克拉何马大学不同用户群的需求，他们依赖电子显微探针对地质和其他材料样品进行化学微分析。需要现代化电子探针能力的具体项目包括：(1)对煤的有机、矿物和微量元素组成进行定量空间分析，包括定量评价煤的显微组成、光学反射率和反向散射电子信号强度之间的相关性；(2)对形成油气储集岩的岩石进行空间分析；(3)对晚期岩浆流体和气体中生长的矿物进行微观尺度研究。*** 9405805 Craig该奖项提供所需资金的75%，用于购买用于透射和反射光的显微镜系统，用于稀有气体同位素实验室，加州大学圣地亚哥分校斯克里普斯海洋学研究所。大学承诺提供收购所需的剩余资金。该显微镜系统主要用于研究从地幔中挤压出来的玄武岩样品中捕获的流体、玻璃和晶体内含物的研究人员。在提取稀有气体（氩、氦和钕）进行同位素分析之前，需要显微镜来定位和识别这些小包裹体。斯克里普斯海洋研究所的研究人员正在利用地幔中稀有气体的同位素含量来了解地幔的地球化学演化。＊＊＊

9404658 London This award provides 55 per cent of the funding required for the upgrade of an electron microprobe system at the School of Geology and Geophysics at the University of Oklahoma. The University is committed to providing the remaining funds necessary for the equipment upgrade, which will consist of modern computer automation of stage movement and analytical functions, installation of x-ray diffracting composite detectors for analysis of light elements, and a sputter coater for carbon coating of non conducting specimens. The upgraded system is needed to meet the needs of a diverse user base at the University of Oklahoma who rely on the electron microprobe for chemical microanalysis of geological and other material samples. Specific projects needing the capabilities of a modernized electron microprobe include: (1) quantitative spatial analysis of the organic, mineral, and trace elemental constituents of coals, including a quantitative assessment of the correlation among maceral composition, optical reflectance, and back scattered electron signal intensity, (2) spatial analysis of rocks forming reservoir rocks for hydrocarbon and water, and (3) microscale studies of minerals grown from late-stage magmatic fluids and gases. *** 9405805 Craig This award provides 75% of the funds required for the acquisition of a microscope system for use with transmitted and reflected light to be used in the rare gas isotope laboratory, Scripps Institution of Oceanography at the University of California, San Diego. The University is committed to providing the remaining funds necessary for the acquisition. The microscope system is mainly to be used by researchers working with fluid, glass, and crystalline inclusions trapped in samples of basaltic rocks that have been extruded from the Earth's mantle. The microscope is needed for the location and identification of these small inclusions prior to extraction of the rare gases (argon, helium, and neodymium) for isotopic analysis. The researchers at the Scripps Institution of Oceanography are using the isotopic content of the rare gases brought up from the mantle to understand the geochemical evolution of the mantle. ***