Community Facility Support for Geochronology and Thermochronology at the Arizona LaserChron Center

亚利桑那 LaserChron 中心的地质年代学和热年代学社区设施支持

• 批准号: 2050246
• 负责人: George Gehrels
• 金额: $ 88.51万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-06-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2050246&HistoricalAwards=false
• 关键词: Community; Facility; Support; Geochronology; Thermochronology

Recent developments in geochronologic methods and instrumentation are revolutionizing many different aspects of Earth Science research. Some of the most exciting advances are being driven by Laser-Ablation ICP Mass Spectrometry (LA-ICPMS), which generates U-Th-Pb ages and complementary geochemical information rapidly, with micron-scale spatial resolution, and with the precision necessary to address a wide range of problems in Earth Science. The Arizona LaserChron Center (ALC) is a community facility that utilizes LA-ICPMS to determine U-Th-Pb ages, Hf isotope ratios, and trace element abundances from a variety of minerals that occur in sedimentary, igneous, and metamorphic rocks. We also utilize a dedicated Scanning Electron Microscope that generates the high-resolution and high-magnification images necessary for state-of-the-art micro-analysis. Primary goals of the ALC are to (1) generate U-Th-Pb ages, Hf isotope ratios, and trace element concentrations of the best precision, accuracy, and spatial resolution possible from LA-ICPMS, (2) provide opportunities for researchers from around the world (and especially NSF-supported scientists) to use our instruments and expertise to address geologic problems, (3) drive the development of new techniques and applications of geochronology, thermochronology, and petrochronology, (4) build new cyberinfrastructure for data acquisition, analysis, and archiving, and (5) use every aspect of facility operation as an opportunity to enhance expertise and diversity among geochronologists and users of geochronology. Research at the ALC is conducted in a highly collaborative mode, with ALC scientists providing assistance with all aspects of a project (from initial design of the study to final publication of results) and faculty members and students from other institutions visiting the lab to generate their own data and learn the theory and methodology of U-Th-Pb geochronology.Funding from this award will enable the ALC to facilitate the acquisition of geochronologic information in support of a large number of NSF-funded projects. These projects focus on generating new knowledge about the growth of continents, emergence of life, processes of mountain building, mechanisms and timing of volcanic eruptions, distribution of sediment through space and time, formation of mineral, energy, and water resources, and linkages between climate and tectonics. The ALC will also continue to help drive the development of numerous new analytical techniques, applications, and instruments, as well as the cyberinfrastructure needed to utilize and integrate the information generated. Educational activities will include hosting visits from several hundred faculty and student researchers per year, teaching short courses at annual meetings, developing materials that can be used in Earth Science courses, providing opportunities for non-scientists to learn about geochronology, creating new tools for displaying and interpreting geochronologic data, and driving the development of global databases that host U-Th-Pb geochronologic information.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

地质方法和仪器的最新发展正在彻底改变地球科学研究的许多不同方面。一些最令人兴奋的进步是由激光燃烧的ICP质谱（LA-ICPMS）驱动的，该质谱（LA-ICPMS）迅速产生U-TH-PB年龄和互补的地球化学信息，并以微分尺度的空间分辨率以及解决地球科学中各种问题所必需的精确性。 亚利桑那激光器中心（ALC）是一种社区设施，利用LA-ICPMS来确定U-Th-PB年龄，HF同位素比率以及来自沉积，无知和变质岩石中各种矿物质的微量元素丰度。我们还利用了专用的扫描电子显微镜，该电子显微镜产生了最先进的微型分析所需的高分辨率和高磁化图像。 ALC的主要目标是（1）产生U-TH-PB年龄，HF同位素比以及最佳精确度，准确性和空间分辨率的痕量元素浓度，（2）为来自世界各地的研究人员提供了机会（尤其是NSF支持的科学家），以解决我们的仪器和专业知识，以解决我们的仪器和专业知识（3）的开发（3）（3）（3），（3），（3），（3），（3），（3），（3），（3），（3），（3），（3），（3），（3），（3），（3）的发展，（3），（3），（3），（3）的发展，（3），（3）的发展，3） （4）（4）建立用于数据获取，分析和归档的新的网络基础设施，以及（5）使用设施运营的各个方面，以增强地球人类学家和地球人类学学用户之间的专业知识和多样性的机会。 Research at the ALC is conducted in a highly collaborative mode, with ALC scientists providing assistance with all aspects of a project (from initial design of the study to final publication of results) and faculty members and students from other institutions visiting the lab to generate their own data and learn the theory and methodology of U-Th-Pb geochronology.Funding from this award will enable the ALC to facilitate the acquisition of geochronologic information in support of a large number NSF资助的项目。这些项目着重于产生有关大陆增长，生命的出现，山地建设过程的新知识，火山喷发的机制和时间安排，通过空间和时间，矿产，能源和水资源的形成以及气候和构造之间的联系的沉积物分布。 ALC还将继续帮助推动开发众多新的分析技术，应用程序和工具，以及利用和集成生成的信息所需的网络基础结构。 Educational activities will include hosting visits from several hundred faculty and student researchers per year, teaching short courses at annual meetings, developing materials that can be used in Earth Science courses, providing opportunities for non-scientists to learn about geochronology, creating new tools for displaying and interpreting geochronologic data, and driving the development of global databases that host U-Th-Pb geochronologic information.This award reflects NSF's statutory mission and has been认为值得通过基金会的智力优点和更广泛影响的评论标准来评估值得支持。

项目成果

Evidence for regionally continuous Early Cretaceous sinistral shear zones along the western flank of the Coast Mountains, coastal British Columbia, Canada

加拿大不列颠哥伦比亚省沿海海岸山脉西侧早白垩世左旋剪切带区域连续的证据

• DOI: 10.1130/ges02502.1
• 发表时间: 2022
• 期刊: Geosphere
• 影响因子: 2.5
• 作者: Wang, Jordan W.;Gehrels, George;Kapp, Paul;Sundell, Kurt
• 通讯作者: Sundell, Kurt