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.

该奖项将支持收购新的激光消融系统，该系统将与CSU-Northridge地质科学系的现有高分辨率质谱仪一起使用。 CSU-Northridge的质谱设施是一个新开发的实验室，主要用于分析同位素比和地球材料中低丰度元素的浓度。激光消融系统与质谱仪融合，并提供了一种直接采样矿物和 /或岩石的微米尺度部分的方法，这对于确定目标材料的特定时序和生长条件很重要。 CSU -Northridge的激光消融 - 质谱设施主要用于确定各种矿物质的年龄，该矿物质在许多地球科学学科中具有广泛的应用。这些应用的一些示例包括：对火成岩的日期和关于大陆壳的时机和增长速度的约束；对地壳变形的变质和约束；沉积岩中矿物质的日期和景观演化的约束。添加该奖项支持的新激光器将使PI可以为洛杉矶地区学术机构易于访问一个独特而高需求的实验室，其中许多是少数派服务。该建议还包括用于夏季研究计划的资金，旨在为传统上服务不足的学生提供支持，使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。这种支持将使PI用新的193 NM ARF ARF激光消融系统替换老化（13岁）激光消融系统。它将与现有的单个收集器扇形场电感耦合等离子体质谱仪（SF-ICPMS）结合，并主要用于辅助矿物质年代学和含量痕量元素分析。这种新的仪器以及大学提供的永久全职技术支持，将使PIS开发一个区域设施，该设施将产生精确的高质量数据，并具有新的效率，从而可以进行高样本的吞吐量和对，分析的分析，例如，高n-number碎屑锆石数据集。痕量元素分析将自行使用以前由于激光信号不稳定性而无法进行的（从各种大块岩石中融合的眼镜上的栅格），并与PB/U年龄数据一起将化学条件与化学条件联系起附属矿物生长。

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