Instrumentation for automated and rapid 'clumped isotope' analyses of small carbonate samples.

用于对小碳酸盐样品进行自动快速“聚集同位素”分析的仪器。

• 批准号: 440145-2013
• 负责人: Banerjee, Neil
• 金额: $ 10.93万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=507547
• 关键词: Instrumentation; automated; rapid; clumped; isotope

The field of stable isotopes studies their distribution in different reservoirs to understand the processes occurring within and at the interface between Earth's atmosphere, hydrosphere, biosphere and lithosphere. These complex processes are ultimately recorded over geologic time in minerals such as carbonates. Carbon and oxygen stable isotope analysis of carbonate minerals is among the most common and useful measurements in isotope geochemistry. Oxygen isotope studies of carbonates have been used as a proxy for temperature for more than 50 years. It has been recently demonstrated that differences in bonding energies between 'rare' and 'common' isotopes results in 'clumping' of the rare isotopes that can be used as a thermometer. Acquisition of a KIEL IV Carbonate Device will provide fully automated high throughput (10,000 samples per year) analysis of tiny (~200 µg) carbonate samples from reaction to result reporting. This automated setup is critical to the research programs of the applicants. Banerjee will use the equipment to understand mineralizing processes that form base and precious metal ore deposits, aqueous processing in meteorites, and paleoenvironmental conditions during colonization of some of Earth's earliest life forms. Longstaffe will use the equipment to trace Great Lakes water history and climate change, track climatic and dietary shifting in Holocene megafauna, and measure changes in whole diet and drinking water to detect human societal changes. Jin will use the equipment for automated microanalysis of brachiopod growth stages to evaluate their reliability as a paleoclimactic indicator. Cheadle will use the equipment to perform 'clumped isotope' geothermometry of carbonate cements in carbonaceous mudstone petroleum systems. Tsujita will use the equipment to study fossil coral growth ridges, cements in calcareous and sideritic concretions, and aragonitic ammonite and bivalve shells for paleothermometry of water masses. The equipment will allow increased HQP training by increasing capacity, provide critical capacity to routinely analyze small samples, and provide access to advanced tools (e.g., clumped isotope analysis) by new and existing collaborators, including Canadian industry.

稳定同位素领域研究它们在不同储层中的分布，以了解地球大气圈、水圈、生物圈和岩石圈内部和界面处发生的过程。这些复杂的过程最终记录在地质时期的矿物中，如碳酸盐。碳酸盐矿物的碳氧稳定同位素分析是同位素地球化学中最常用和最有用的方法之一。50多年来，碳酸盐的氧同位素研究一直被用作温度的替代指标。最近已经证明，“稀有”和“常见”同位素之间的键能差异导致了可以用作温度计的稀有同位素的“聚集”。基尔IV碳酸盐分析仪的购置将为微小（~200 µg）碳酸盐样品提供从反应到结果报告的全自动高通量（每年10，000个样品）分析。这种自动化设置对申请人的研究计划至关重要。Banerjee将使用这些设备来了解形成基础和贵金属矿床的矿化过程，陨石中的水处理，以及地球上一些最早的生命形式殖民化期间的古环境条件。Longstaffe将使用这些设备追踪五大湖的水历史和气候变化，跟踪全新世巨型动物的气候和饮食变化，并测量整个饮食和饮用水的变化，以检测人类社会的变化。Jin将使用该设备对腕足动物的生长阶段进行自动微量分析，以评估其作为古气候指标的可靠性。Cheadle将使用该设备对碳质泥岩石油系统中的碳酸盐胶结物进行“聚集同位素”地质测温。Tsujita将使用这些设备研究珊瑚生长脊化石、钙质和菱铁矿结核中的胶结物、文石菊石和双壳类贝壳，以用于水体的古温度测定。该设备将通过提高能力来增加HQP培训，提供常规分析小样本的关键能力，并提供先进工具（例如，聚集同位素分析）的新的和现有的合作者，包括加拿大的工业。