Collaborative Research: RAPID: Opportunity to acquire continuous, high-resolution geochemical proxies for paleoclimate, paleoenvironment, and modern hydrogeology from CPCP cores

合作研究：RAPID：从 CPCP 核心获取古气候、古环境和现代水文地质的连续、高分辨率地球化学代理的机会

• 批准号: 2227245
• 负责人: Sean Kinney
• 金额: $ 10.8万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-07-15 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2227245&HistoricalAwards=false
• 关键词: Collaborative; Research; RAPID; Opportunity; acquire

This project will generate a continuous record of chemical composition changes through rock cores collected in Petrified Forest National Park as part of the NSF-funded Colorado Plateau Coring Project. The study has three main objectives, 1) to develop an understanding of how changes in the chemistry of sediments reflect changes in past climate from 200-million-year-old river and flood plain systems, 2) to use this record to develop an understanding of the influence of both CO2 and changes in Earth’s orbital parameters on past climatic variations and 3) develop a chemical dataset that will provide a baseline understanding of the distribution of potential ground water contaminants (e.g., As, U) in adjacent lands of the Navajo Nation and surrounding regions that draw water from the cored strata. The data generated in this project will serve as the basis of a project for a 2022 summer REU student from Navajo Technical University. In addition, this project will support two early career scientists and two Columbia University graduate students. Finally, the project team will develop curriculum and outreach products through the Rutgers Geology Museum and facilitate synergistic activities on related environmental issues in New Jersey and Colorado Plateau regions. The Triassic Chinle and Moenkopi Formations occupy huge areas of the Colorado Plateau and record the history of Triassic environmental change on an immense alluvial plain and are famous for their fossil record of the evolution of continental ecosystems including dinosaurs and mammals. The physical, paleomagnetic, and geochronological stratigraphy of CPCP-1 cores has been described in a suite of recent papers and placed into a larger paleoenvironmental and global temporal context, but the chemical stratigraphy of the cores has yet to be analyzed. Several small projects have demonstrated the utility of such data, but the lack of synoptic chemical datasets from these cores hinders their potential for both paleo- and modern (including their impact on groundwater) environmental analysis. This project will fill this deficit with the acquisition of continuous XRF chemical data that will permit tests of hypotheses of orbital pacing of climate (long eccentricity and inclination cycles) as recorded in these strata and of how cyclical climate and the deep time hydrological history of these strata relates to present stratigraphic distribution of potential geogenic contaminants and their migration into present day aquifers.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.

作为 NSF 资助的科罗拉多高原取芯项目的一部分，该项目将通过在石化森林国家公园收集的岩芯生成化学成分变化的连续记录。该研究有三个主要目标，1）了解化学成分的变化。沉积物的化学反应反映了 2 亿年前河流和洪泛平原系统过去气候的变化，2) 利用这一记录来了解二氧化碳和地球轨道参数变化对过去气候的影响3) 开发一个化学数据集，该数据集将提供对纳瓦霍族邻近土地和从本项目取芯地层取水的周边地区潜在地下水污染物（例如砷、铀）分布的基线了解。将作为纳瓦霍技术大学 2022 年夏季 REU 学生项目的基础。此外，该项目还将支持两名早期职业科学家和两名哥伦比亚大学研究生。最后，项目团队将开发课程和外展活动。三叠纪钦利地层和莫恩科皮地层占据了科罗拉多高原的大片地区，记录了巨大冲积平原上三叠纪环境变化的历史。因其对包括恐龙和哺乳动物在内的大陆生态系统演化的化石记录而闻名，CPCP-1 岩心的物理、古地磁和地质年代地层学已在最近的一系列论文，并将其置于更大的古环境和全球时间背景中，但岩心的化学地层学尚未分析，几个小型项目已经证明了此类数据的实用性，但缺乏这些岩心的概要化学数据集。阻碍了它们在古和现代（包括对地下水的影响）环境分析方面的潜力。该项目将通过获取连续的 XRF 化学数据来填补这一缺陷，这些数据将允许对气候轨道步调的假设进行测试（长偏心率和气候变化）。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。