Early Career: Acquisition of a laser ablation system to enable new constraints on continental crust, dinosaurs, and ore deposits

早期职业生涯：购买激光烧蚀系统，对大陆地壳、恐龙和矿床施加新的限制

• 批准号: 1561166
• 负责人: Gregory Dumond
• 金额: $ 54.23万
• 依托单位: University of Arkansas
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-01 至 2020-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1561166&HistoricalAwards=false
• 关键词: Early; Career; Acquisition; laser; ablation

This project seeks to use laser ablation techniques to understand three fundamental aspects of the Earth system: 1) the origin and evolution of Earth?s continents, 2) the preservation of fossil bone material and its use in constraining aspects of Earth?s paleoclimate, and 3) understanding the source and development of economic ore deposits. Of particular interest to the national interest is the project?s efforts to mitigate dinosaur fossil bone poaching and to develop new methods for understanding the origin of economically viable metal ore deposits. This award also provides critical analytical support for three early career scientists, including two women, one of whom is Hispanic. Finally, the award will help establish a new laboratory that will facilitate the education of undergraduate and graduate Earth scientists in cutting edge analytical techniques that are applicable to understanding the Earth environment.This award will help establish the University of Arkansas? TRAIL facility (Trace element and Radiogenic Isotope Laboratory). Laser ablation capabilities provided by this award will be used to develop both conventional and split-stream analytical protocols for accessory phases, fossil bone, and sulfides utilizing the laboratory?s existing multi-collector and quadrupole ICP-MS instruments. The lab will be focused on three main goals: 1) using accessory phase (e.g., monazite, zircon, and titanite) Th-U-Pb petrochronology to constrain the metamorphic reactions that occur during melting and deformation in the deep continental crust, 2) understanding vertebrate taphonomy and its utility for constraining aspects of paleoclimate and paleoecology, and 3) providing new constraints on the genesis of economic ore deposits via the in situ analysis of Pb-isotopes, Cu-isotopes, and trace elements in sulfides. A fourth early career scientist in the Department of Anthropology will utilize LA-ICP-MS to analyze archeological pottery to constrain trade networks.

该项目旨在利用激光烧蚀技术来了解地球系统的三个基本方面：1）地球的起源和演化？2）化石骨骼材料的保存及其在限制地球方面的使用？（3）认识经济矿床的来源和发展。对国家利益特别感兴趣的项目是什么？该项目致力于减少恐龙化石骨骼偷猎，并开发新的方法来了解经济上可行的金属矿床的起源。该奖项还为三名早期职业科学家提供了关键的分析支持，其中包括两名女性，其中一名是西班牙裔。最后，该奖项将帮助建立一个新的实验室，这将有利于本科生和研究生地球科学家的教育，在尖端的分析技术，适用于了解地球环境。TRAIL设施（微量元素和放射性同位素实验室）。激光烧蚀能力提供的这项裁决将用于开发传统和分流分析协议的附件阶段，化石骨，硫化物利用实验室？现有的多收集器和四极杆ICP-MS仪器。该实验室将集中在三个主要目标：1）使用附件阶段（例如，独居石、锆石和钛铁矿）Th-U-Pb岩石年代学，以制约大陆地壳深部熔融和变形过程中发生的变质反应; 2）了解脊椎动物埋藏学及其在制约古气候和古生态方面的效用; 3）通过硫化物中Pb同位素、Cu同位素和微量元素的原位分析，为经济矿床的成因提供新的制约。人类学系的第四位早期职业科学家将利用LA-ICP-MS分析考古陶器，以限制贸易网络。