Acquisition of a 193 nm excimer laser ablation system and optical profiler for in situ (U-Th)/He and U-Pb geochronology and thermochronology at the University of Colorado Boulder

科罗拉多大学博尔德分校购置 193 nm 准分子激光烧蚀系统和光学剖面仪，用于原位 (U-Th)/He 和 U-Pb 地质年代学和热年代学

• 批准号: 1920648
• 负责人: Rebecca Flowers
• 金额: $ 49.96万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-07-01 至 2023-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1920648&HistoricalAwards=false
• 关键词: Acquisition; 193; nm; excimer; laser

The core missions of the CU TRaIL (University of Colorado Boulder - Thermochronology Research and Instrumentation Lab) are to foster innovative, interdisciplinary, and high-caliber research while also providing geochronology data and training to the broader Earth science community. This project will acquire three pieces of instrumentation that will add new high-spatial resolution capabilities to the CU TRaIL. This equipment will diversify the services that the lab offers, expand the opportunities that it provides to visitors, and enrich an array of ongoing research that includes studies of landscape evolution and topographic development, work on lunar rocks to decipher the impact history of the Moon, and investigations in ancient rocks to constrain development of the "Great Unconformity" and links with biologic change. The project includes support for an underrepresented undergraduate summer intern, an undergraduate research seminar, and three undergraduate research projects.This project will acquire: 1) an excimer laser-ablation system, 2) hardware to build a quadrupole He line dedicated to in situ He analysis, and 3) an optical profiler. The equipment will advance the lab?s research and that of its user community by enabling in situ (U-Th)/He dating, U-Th and He mapping of single crystals, U-Pb dating, and in situ measurements and mapping of other elements. These new capabilities will allow: 1) rapid sample screening for strategic mineral selection, 2) quantification of intracrystalline heterogeneities, 3) direct measurement of diffusion gradients in single crystals, 4) chemical characterization, 5) dating of imperfect and small crystals, 6) largely non-destructive analysis of high-value samples, 7) avoidance of U loss that can occur during conventional whole-crystal heating, 8) more efficient analysis of higher-retentivity phases, 9) possible increased throughput for detrital investigations, and 10) in situ U-Pb and (U-Th)/He double-dating. The project includes support for an underrepresented undergraduate summer intern, an undergraduate research seminar, and three undergraduate research projects.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.

CU步道（科罗拉多大学博尔德大学 - 热量研究和仪器实验室）的核心任务是促进创新，跨学科和高素质的研究，同时还为更广泛的地球科学社区提供了地质学数据和培训。该项目将获取三种仪器，这将为CU步道增添新的高空间分辨率功能。该设备将使实验室提供的服务多样化，扩大其为访客提供的机会，并丰富一系列正在进行的研究，其中包括对景观进化和地形开发的研究，对月球岩石的努力来破译月球的影响历史，并在古代岩石中进行调查，以限制“巨大的不合格性”的发展，并与生物学变化联系。该项目包括支持代表性不足的本科暑期实习生，本科生研究研讨会和三个本科研究项目。该项目将获得：1）一个准分子激光制度系统，2）硬件，用于建造四倍的人，他专用于原始分析，以及3）一位光学毕业生。该设备将通过启用原位（U-th）/He Dating，U-The和He绘制单晶，U-PB约会以及原位测量和其他元素的映射，从而推进实验室的研究及其用户社区的研究。 These new capabilities will allow: 1) rapid sample screening for strategic mineral selection, 2) quantification of intracrystalline heterogeneities, 3) direct measurement of diffusion gradients in single crystals, 4) chemical characterization, 5) dating of imperfect and small crystals, 6) largely non-destructive analysis of high-value samples, 7) avoidance of U loss that can occur during conventional whole-crystal heating, 8) more有效地分析了高级保留阶段，9）可能增加碎屑研究的吞吐量，而10）原位U-PB和（u-th）/He双重约定。该项目包括支持代理不足的本科暑期实习生，本科研究研讨会和三个本科研究项目。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛影响的评估来通过评估来支持的。