Acquisition of New Excimer Laser Ablation System for a High Resolution ICPMS Facility

为高分辨率 ICPMS 设施采购新型准分子激光烧蚀系统

• 批准号: 1655152
• 负责人: Robinson Cecil
• 金额: $ 29.91万
• 依托单位: The University Corporation, Northridge
• 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: 2017-09-15 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1655152&HistoricalAwards=false
• 关键词: Acquisition; New; Excimer; Laser; Ablation

This award will support the acquisition of a new laser ablation system to be used in tandem with an existing high resolution mass spectrometer in the CSU-Northridge Department of Geological Sciences. The mass spectrometry facility at CSU-Northridge is a newly developed laboratory used primarily for analyzing isotopic ratios and the concentrations of low abundance elements in earth materials. A laser ablation system couples with the mass spectrometer and provides a way of directly sampling micrometer-scale parts of minerals and / or rocks, which is important for determining the specific timing and growth conditions of the targeted material. The laser ablation - mass spectrometry facility at CSU-Northridge is used primarily for determining ages of a variety of minerals, which has a broad range of applications across many geoscience disciplines. Some examples of those applications include: dating of igneous rocks and constraints on the timing and growth rate of continental crust; dating of metamorphism and constraints on the deformation of crust; dating of minerals in sedimentary rocks and constraints on the evolution of landscapes. Addition of the new laser supported by this award will allow the PIs to build a unique and high demand laboratory easily accessible to Los Angeles area academic institutions, many of which are minority-serving. This proposal also includes funding for a summer research initiative aimed at supporting traditionally underserved students, giving them an opportunity to receive training and mentorship using our state-of-the-art facility in a small-group setting. This support will allow the PIs to replace an aging ( 13-year old) laser ablation system with a new 193 nm ArF excimer laser ablation system. It will be coupled with an existing single collector sector field inductively coupled plasma mass spectrometer (SF-ICPMS), and used primarily for accessory mineral geochronology and in-situ trace element analysis. This new instrumentation, together with permanent, full-time technical support provided by the University, will allow the PIs to develop a regional facility that will generate precise, high-quality data with new efficiencies that allow for high sample throughput and the analysis of, for example, high n-number detrital zircon datasets. Trace element analysis, which was previously not possible because of laser signal instability, will be used on its own (rastering over glasses fused from a variety of bulk rocks), and in concert with Pb/U age data to link chemical conditions to timing of accessory mineral growth.

该奖项将支持一个新的激光烧蚀系统的收购，将与现有的高分辨率质谱仪在地质科学的加州州立大学北岭系串联使用。CSU Northridge的质谱设备是一个新开发的实验室，主要用于分析地球物质中低丰度元素的同位素比率和浓度。激光烧蚀系统与质谱仪耦合，并提供了一种直接对矿物和/或岩石的微米级部分进行采样的方法，这对于确定目标材料的特定时间和生长条件非常重要。CSU Northridge的激光烧蚀-质谱设备主要用于确定各种矿物的年龄，在许多地球科学学科中具有广泛的应用。这些应用的一些例子包括：火成岩的年代测定和对大陆地壳的时间和生长速度的限制;变质作用的年代测定和对地壳变形的限制;沉积岩中矿物的年代测定和对地貌演变的限制。该奖项支持的新激光器的增加将使PI能够建立一个独特的和高要求的实验室，方便洛杉矶地区的学术机构，其中许多是少数民族服务。该提案还包括资助一项旨在支持传统上服务不足的学生的夏季研究计划，让他们有机会在小组环境中使用我们最先进的设施接受培训和指导。该支持将允许PI使用新的193 nm ArF准分子激光消融系统替换老化（13年）的激光消融系统。它将与现有的单收集器扇形场电感耦合等离子体质谱仪（SF-ICPMS）相结合，主要用于辅助矿物地质年代学和现场微量元素分析。这种新的仪器，加上大学提供的永久性全职技术支持，将使PI能够开发一个区域设施，以新的效率生成精确，高质量的数据，从而实现高样品吞吐量和分析，例如，高n数碎屑锆石数据集。微量元素分析，这是以前不可能的，因为激光信号的不稳定性，将使用自己的（光栅玻璃熔融从各种散装岩石），并与铅/铀年龄数据的音乐会，以链接化学条件的时间，辅助矿物生长。

项目成果

Temporal and spatial variations in magmatism and transpression in a Cretaceous arc, Median Batholith, Fiordland, New Zealand

• DOI: 10.1130/l1073.1
• 发表时间: 2019-10
• 期刊: Lithosphere
• 影响因子: 2.4
• 作者: Luisa F. Buritica;J. Schwartz;K. Klepeis;E. Miranda;A. Tulloch;M. Coble;A. Kylander‐Clark

Early Mesoproterozoic evolution of midcontinental Laurentia: Defining the geon 14 Baraboo orogeny

劳伦大陆中部早中元古代演化：定义geon 14 Baraboo造山运动

• DOI: 10.1016/j.gsf.2021.101174
• 发表时间: 2021
• 期刊: Geoscience Frontiers
• 影响因子: 8.9
• 作者: Medaris, L. Gordon;Singer, Brad S.;Jicha, Brian R.;Malone, David H.;Schwartz, Joshua J.;Stewart, Esther K.;Van Lankvelt, Amanda;Williams, Michael L.;Reiners, Peter W.
• 通讯作者: Reiners, Peter W.

Mantle control on magmatic flare-ups in the southern Coast Mountains batholith, British Columbia

地幔对不列颠哥伦比亚省南部海岸山脉岩基岩浆爆发的控制

• DOI: 10.1130/ges02361.1
• 发表时间: 2021
• 期刊: Geosphere
• 影响因子: 2.5
• 作者: Cecil, M. Robinson;Gehrels, George E.;Rusmore, Margaret E.;Woodsworth, Glenn J.;Stowell, Harold H.;Yokelson, Intan N.;Homan, Emily;Kitajima, Kouki;Valley, John W.
• 通讯作者: Valley, John W.

Formation and orogen-parallel transport of the Dadeville Complex, Alabama, USA: Implications for the Taconian orogeny in the southern Appalachians

美国阿拉巴马州达德维尔杂岩的形成和造山带平行输送：对阿巴拉契亚山脉南部塔科尼亚造山运动的影响

• DOI: 10.2475/07.2019.03
• 发表时间: 2019
• 期刊: American Journal of Science
• 影响因子: 2.9
• 作者: Ma, Chong;VanDervoort, Dane S.;Steltenpohl, Mark G.;Schwartz, Joshua J.
• 通讯作者: Schwartz, Joshua J.

Growth of the southern Tian Shan-Pamir and its impact on central Asian climate

南天山-帕米尔高原的生长及其对中亚气候的影响

• DOI: 10.1130/b36471.1
• 发表时间: 2022
• 期刊: GSA Bulletin
• 作者: Richter, Fabiana;Pearson, Jozi;Vilkas, Marius;Heermance, Richard V.;Garzione, Carmala N.;Cecil, M. Robinson;Jepson, Gilby;Moe, Annelisa;Xu, Jianhong;Liu, Langtao
• 通讯作者: Liu, Langtao