Facility Support: The WiscSIMS National Ion Microprobe

设施支持：WiscSIMS 国家离子微探针

• 批准号: 1658823
• 负责人: John Valley
• 金额: $ 98.89万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-05-01 至 2021-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1658823&HistoricalAwards=false
• 关键词: Facility; Support; WiscSIMS; National; Ion

This award renews funding of WiscSIMS as a national, multi-user facility for stable isotope geochemistry. Applications of the lab's new in situ capabilities for microanalysis of stable isotopes and trace elements are potentially transformative in many areas of earth sciences and have importance for subjects of societal concern including development of energy and mineral resources; evaluating volcanic hazards; documenting climate change and paleoclimate; and environmental remediation. Technology transfer is an important activity of this lab. WiscSIMS has published many peer-reviewed reports of new technological and scientific developments that are being applied by the private sector that enable the larger research community to study how our planet works. Research at WiscSIMS also includes many studies driven solely by intellectual curiosity, including the genesis of the solar system, the origin of life, and the history of Earth. Education is emphasized as part of the routine operation of this facility, involving high school students and science teachers with the Univ. of Wisconsin People Program, a pre-college pipeline for students of color and low-income students, and the NASA Astrobiology Institute. WiscSIMS staff often communicate with the media, and contribute to web sites, open houses, and exhibitions at the UW-Madison Geology Museum, which has 40,000 visitors/year. In addition, we teach regular courses in Stable Isotope Geochemistry and Environmental Isotopes, and we train undergraduates, graduate students and post-doctoral fellows. In the past 6 years, WiscSIMS trained 63 students including 33 women and four minorities. WiscSIMS has optimized an IMS-1280 large-radius, multi-collector ion microprobe (SIMS) for analysis of stable isotopes (including Li, C, N, O, Mg, Si, S, Ca, and Fe). WiscSIMS has developed unique capabilities for precise and accurate analysis of isotope ratios from small to ultra small spots. The ability to analyze small spots (1-10 micron) in situ from microscope mounts allows data to be put in context with imaging and other forms of analysis. The applications of these new in situ capabilities are potentially transformative in many areas of geochemistry. The range and pattern of isotope variation can finally be determined from small objects that were formerly homogenized by analysis of bulk or powdered samples such as zircons, microfossils, mineral inclusions, quartz overgrowths, and carbonates. The three most common areas of research that are enabled by WiscSIMS are Igneous and Metamorphic Petrology & Geochemistry; Cosmochemistry & Astrobiology; and Low Temperature Geochemistry & Paleoclimatology. Over 50% of instrument beam-time has been devoted to earth science and NSF-supported projects. NSF-funded projects receive the highest priority and a reduced-fee schedule. It is not necessary for guests to have previous SIMS experience. Thus far, over 300 scientists have worked with WiscSIMS from 65 different universities and research institutes.

这一奖项延续了WiscSIMS作为稳定同位素地球化学国家多用户设施的资助。该实验室新的现场稳定同位素和微量元素微量分析能力的应用在地球科学的许多领域具有潜在的变革性，并对社会关注的主题具有重要意义，包括开发能源和矿产资源；评估火山灾害；记录气候变化和古气候；以及环境补救。技术转让是本实验的一项重要活动。WiscSIMS发表了许多关于私营部门正在应用的新技术和科学发展的同行评议报告，使更大的研究界能够研究我们的星球是如何运作的。WiscSIMS的研究还包括许多完全出于好奇心的研究，包括太阳系的起源、生命的起源和地球的历史。教育被强调为该设施日常运作的一部分，有高中生和大学的科学教师参与。威斯康星州人计划，一个为有色人种学生和低收入学生提供大学预科的渠道，以及NASA天体生物研究所。WiscSIMS的工作人员经常与媒体交流，并为华盛顿大学麦迪逊地质博物馆的网站、开放参观和展览做出贡献，该博物馆每年有40,000名参观者。此外，我们还教授稳定同位素地球化学和环境同位素的常规课程，并培训本科生、研究生和博士后研究员。在过去的6年里，WiscSIMS培训了63名学生，其中包括33名女性和4名少数民族。WiscSIMS优化了IMS-1280型大半径、多收集器离子微探针(SIMS)，用于稳定同位素(包括Li、C、N、O、Mg、Si、S、Ca和Fe)的分析。WiscSIMS已经开发出独特的能力，可以精确和准确地分析从小到超小点的同位素比率。从显微镜底座上原位分析小斑点(1-10微米)的能力使数据能够与成像和其他形式的分析联系在一起。这些新的原位能力的应用在许多地球化学领域具有潜在的变革性。同位素变化的范围和模式最终可以从以前通过分析块状或粉末状样品(如锆石、微化石、矿物包裹体、石英过度生长和碳酸盐)而均质的小物体确定。WiscSIMS支持的三个最常见的研究领域是火成岩和变质岩石学和地球化学；宇宙化学和天体生物学；以及低温地球化学和古气候学。超过50%的仪器波束时间用于地球科学和美国国家科学基金会资助的项目。NSF资助的项目享有最高的优先权和降低费用的时间表。嘉宾不一定要有过往的模拟人生经验。到目前为止，来自65所不同大学和研究机构的300多名科学家与WiscSIMS合作。

项目成果

Searching for the Great Oxidation Event in North America: A Reappraisal of the Huronian Supergroup by SIMS Sulfur Four-Isotope Analysis

• DOI: 10.1089/ast.2017.1722
• 发表时间: 2018-05-01
• 期刊: ASTROBIOLOGY
• 影响因子: 4.2
• 作者: Cui, Huan;Kitajima, Kouki;Valley, John W.
• 通讯作者: Valley, John W.

Rapid formation of porphyry copper deposits evidenced by diffusion of oxygen and titanium in quartz

• DOI: 10.1130/g40262.1
• 发表时间: 2018-06
• 期刊: Geology
• 影响因子: 5.8
• 作者: F. Cernuschi;J. Dilles;S. Grocke;J. Valley;K. Kitajima;F. Tepley

Calibration of oxygen isotope fractionation and calcite‐corundum thermometry in emery at Naxos, Greece

希腊纳克索斯金刚砂中氧同位素分馏和方解石刚玉测温的校准

• DOI: 10.1111/jmg.12512
• 发表时间: 2020
• 期刊: Journal of Metamorphic Geology
• 影响因子: 3.4
• 作者: Turnier, Rachelle B.;Katzir, Yaron;Kitajima, Kouki;Orland, Ian J.;Spicuzza, Michael J.;Valley, John W.
• 通讯作者: Valley, John W.

Spatially-resolved isotopic study of carbon trapped in ∼3.43 Ga Strelley Pool Formation stromatolites

对 3.43 Ga Strelley 池组叠层石中捕获的碳进行空间分辨同位素研究

• DOI: 10.1016/j.gca.2017.11.028
• 发表时间: 2018
• 期刊: Geochimica et Cosmochimica Acta
• 影响因子: 5
• 作者: Flannery, David T.;Allwood, Abigail C.;Summons, Roger E.;Williford, Kenneth H.;Abbey, William;Matys, Emily D.;Ferralis, Nicola
• 通讯作者: Ferralis, Nicola

Extreme oxygen isotope zoning in garnet and zircon from a metachert block in mélange reveals metasomatism at the peak of subduction metamorphism

混杂岩中的石榴石和锆石中的极端氧同位素分带揭示了俯冲变质作用高峰期的交代作用

• DOI: 10.1130/g46135.1
• 发表时间: 2019
• 期刊: Geology
• 影响因子: 5.8
• 作者: Page, F. Zeb;Cameron, Emilia M.;Flood, Clara Margaret;Dobbins, Jeffrey W.;Spicuzza, Michael J.;Kitajima, Kouki;Strickland, Ariel;Ushikubo, Takayuki;Mattinson, Christopher G.;Valley, John W.
• 通讯作者: Valley, John W.