Collaborative Research: Analytical Techniques and Software: Development of CyberInfrastructure to Support Laser-Ablation ICP Mass Spectrometry
Collaborative Research: Analytical Techniques and Software: Development of CyberInfrastructure to Support Laser-Ablation ICP Mass Spectrometry
批准号:
0930173
负责人:
James Walker
金额:
$8.91万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2010
资助国家:
美国
项目状态:
已结题
起止时间:
2010-06-01 至 2013-05-31
中文摘要
U-Pb激光剥蚀年代学已成为锆石定年最常用的方法。尽管这一工具广泛应用于许多地质问题,但在分析策略和数据简化协议方面几乎没有共识。结果是实验室间偏倚以及计算日期的误差低估和高估。这限制了我们比较来自不同实验室的结果的能力,也限制了对EarthChem等数据库的严格编译。该项目将通过开发网络基础设施工具来支持激光烧蚀ICP-质谱(LA-ICP-MS)来弥补这种情况。该项目将与国际社会协商,开发开放源码的免费软件,以严格的统计方法处理数据减少的所有方面,从计算比率到校正干扰和漂移。我们的方法将遵循用于开发类似的软件作为地球时间项目的一部分,并需要软件工程和地球化学领域的整合。由此产生的软件将消除实验室间偏差的大量来源,并作为一种教学工具,清楚地显示如何将原始比率转换成日期和不确定性,创建软件将LA-ICP-MS社区与正在开发的地球化学数据库连接起来,用于地质年代学和热年代学,将使这一重要技术的数据纳入更大的地球化学和地质学数据结构。这些数据将在广泛的领域发挥重要作用,如了解大陆的生长,进化变化的年表,早期原始人类进化的时间,以及气候和构造之间的联系。在计划工作的所有阶段,我们将涉及从本科生到博士后科学家的广泛的社会各界,以帮助开发下一代分析师和软件工程师。特别是,软件工程师和地球科学家之间的合作的系统化发展将得到推进,因为它产生了强大而可靠的工作流程工具。
英文摘要
U-Pb laser ablation geochronology has become the most commonly applied tool for dating zircons. Despite the widespread application of this tool to a host of geological problems, there is little consensus with regard to analytical strategies and data reduction protocols. The result is inter-laboratory bias and both under- and over-estimation of errors on calculated dates. This limits our ability to compare results from different labs and limits rigorous compilations from databases such as EarthChem. This project will remedy this situation by developing cyber infrastructure tools in support of Laser-Ablation ICP-Mass Spectrometry (LA-ICP-MS). The project will develop open-source, free, software in consultation with the international community to treat with statistical rigor all aspects of data reduction, from calculation of ratios to correction for interferences and drift. Our approach will follow that used in developing similar software as part of the EARTHTIME project and requires the integration of the fields of software engineering and geochemistry. The resulting software will eliminate large sources of interlaboratory bias and serve as a teaching tool showing clearly how raw ratios are converted into dates and uncertainties.Creating the software for connecting the LA-ICP-MS community with the developing EarthChem database for geochronology and thermochronology will provide the integration of data from this important technique into the larger data structure of geochemistry and geology. These data will play an important role in far-ranging fields such as understanding the growth of continents, chronology of evolutionary changes, timing of early hominid evolution, and linkages between climate and tectonics. During all phases of the planned work, we will involve a broad cross section of the community from undergraduates to post-doctoral scientists to help develop the next generation of analysts and software engineers. In particular, the systematic evolution of the collaboration between software engineers and earth scientists will be advanced as it produces robust and reliable workflow tools.
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EarthCube Domain End-User Workshop for Structural Geology and Tectonics
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Collaborative Research: Chronology and Paleoecology of late Quaternary Proboscidean Extinctions in the Great Lakes Region (USA)
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资助金额:$7.67万
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依托单位:
Workshop Support: Establishing Data Reporting Requirements and Data Archiving for U-Series Dating
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项目类别:Continuing Grant
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MARGINS: Collaborative Research: Origins of Local Variations in Subduction-Related Fluids: Evidence from Olivine-Hosted Melt Inclusions from the Central American Subduction Zone
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批准号:0742458
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项目类别:Standard Grant
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负责人:James Walker
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Geoinformatics: Toward Developing a National Geoinformatics System (NGS) Workshop Series
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资助金额:$9.04万
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财政年份:2008
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负责人:James Walker
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依托单位:
Collaborative Research: Facility Support: Building the INTERFACE Facility for Cm-Scale, 3D Digital Field Geology
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批准号:0651230
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项目类别:Continuing Grant
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资助金额:$11.0万
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负责人:James Walker
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Collaborative Research: Volcanic Material in Triassic Sedimentary Units of Southwestern North America: Understanding the Initiation of Arc Magmatism
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批准号:0711107
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资助金额:$8.5万
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财政年份:2007
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Collaborative Research: How is Strain of the Eastern California Shear Zone Transferred Across the Garlock Fault?
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Workshop Support: Envisioning a National Geoinformatics System for the United States; Denver, CO
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批准号:0725998
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项目类别:Standard Grant
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资助金额:$0.0万
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依托单位:
国内基金
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