TS: Advancing and Broadening Access to Laser-Ablation (U-Th)/He Thermochronlogy

TS：推进和扩大激光烧蚀 (U-Th)/He 热年代学的应用

• 批准号: 2311978
• 负责人: Rebecca Flowers
• 金额: $ 86.54万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-07-15 至 2028-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2311978&HistoricalAwards=false
• 关键词: TS; Advancing; Broadening; Access; Laser

This project will provide funds for human infrastructure support in the CU TRaIL (University of Colorado Boulder - Thermochronology Research and Instrumentation Lab) to help transform high-spatial resolution, LA-(U-Th)/He thermochronology from a specialty method accessible to only a handful of geochronologists worldwide into a technique available for widespread use by the national geoscience community. (U-Th)/He dating is now a fundamental tool for constraining thermal histories, with applications across a spectrum of tectonic, structural, geomorphic, sedimentary, petrologic, volcanogenic, and planetary studies. Nearly all existing (U-Th)/He data are conventional whole-crystal analyses. Laser ablation (LA)-(U-Th)/He dating, in which one or more analyses are acquired on a small portion of a crystal, holds tremendous potential to enrich a wide variety of research. The CU TRaIL currently serves as a major source of whole-crystal (U-Th)/He data and training for the U.S. Earth science community. This project will similarly create a community resource for LA-(U-Th)/He data and training in TRaIL, by accelerating TRaIL’s LA-(U-Th)/He development activities and providing the resources necessary to offer this powerful technique more widely. Areas of application include more efficient generation of large-N detrital (U-Th)/(He-Pb) double-date datasets, multi-spot (U-Th)/He date profiles to constrain bedrock thermal histories, single-grain intracrystalline (U-Th)/He maps that can be integrated with other types of intra-grain data (e.g., Raman), in situ petrochronology, and analysis of minerals for which analytical challenges are posed by the conventional method. The new TRaIL team member will also establish new and engage in existing BAJEDI-focused activities that include a new partnership with a 79% minority, STEM-focused public high school in Denver, involvement of the lab for the first time in the CU Uplift Research Program that entrains underrepresented minorities in STEM research projects, and interacting with underrepresented minority students who are obtaining a summer research experience in TRaIL through the RESESS (Research Experiences in Solid Earth Science for Students) program.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.

该项目将为 CU TRaIL（科罗拉多大学博尔德分校 - 热年代学研究和仪器实验室）的人力基础设施支持提供资金，以帮助将高空间分辨率、LA-(U-Th)/He 热年代学从只能使用的专业方法转变为世界各地的一些地质年代学家研究了一种可供国家地球科学界广泛使用的技术（U-Th）/He 测年技术，该技术现已成为限制热历史的基本工具，其应用遍及构造、构造、地貌、沉积、岩石学、火山成因和行星研究几乎所有现有的 (U-Th)/He 数据都是全晶体常规分析 (LA)-(U-Th)/He 测年，其中一项或多项。 CU TRaIL 目前是全晶体 (U-Th)/He 数据和培训的主要来源。美国地球科学界。该项目将通过加速 TRaIL 的 LA-(U-Th)/He 开发活动并提供必要的资源，为 TRaIL 中的 LA-(U-Th)/He 数据和培训创建社区资源。这种强大的技术得到了更广泛的应用，包括更有效地生成大N碎屑（U-Th）/（He-Pb）双日期数据集、多点（U-Th）/He日期剖面以约束基岩。热的历史、可与其他类型的晶内数据（例如拉曼）集成的单晶晶内 (U-Th)/He 图、原位岩石年代学以及对传统方法提出分析挑战的矿物分析新的 TRaIL 团队成员还将建立新的并参与现有的以 BAJEDI 为重点的活动，其中包括与丹佛一所 79% 少数族裔、以 STEM 为重点的公立高中建立新的合作伙伴关系，以及实验室的参与。 CU Uplift 研究计划首次邀请代表性不足的少数族裔参与 STEM 研究项目，并与通过 RESESS（学生固体地球科学研究经验）计划获得 TRaIL 夏季研究经验的代表性不足的少数族裔学生进行互动。该奖项反映了通过使用基金会的智力价值和更广泛的影响审查标准进行评估，NSF 的法定使命被认为值得支持。