RUI: A sedimentological and sequence stratigraphic framework for carbon isotopic sampling and interpretation

RUI：用于碳同位素采样和解释的沉积学和层序地层框架

• 批准号: 2042276
• 负责人: Page Quinton
• 金额: $ 37.01万
• 依托单位: SUNY College at Potsdam
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2042276&HistoricalAwards=false
• 关键词: RUI; sedimentological; sequence; stratigraphic; framework

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2).During the Paleozoic Era (541-251.9 million years ago) the continents we repeatedly submerged by shallow seas. The chemistry of the rocks formed in these shallow seas record details about how carbon moved between the oceans, atmosphere, biosphere, and sediments (carbon cycling). This project will focus on understanding how sea level change influenced the record of carbon cycling, which will improve our understanding of Earth’s climate history. Ten undergraduate students will participate in this project and gain valuable field and laboratory experience. The data generated will be used to build teaching modules to help the public understand how geologists study Earth’s climate history.This project will explore the relationship between sea level and carbon isotopic records in ancient epicontinental carbonate settings by addressing the following questions: 1) does sea level change in epicontinental carbonate settings result in consistent and resolvable patterns in bulk carbonate isotopic values; 2) if these patterns do exist, are they resolvable at multiple scales of sea level change; and 3) are the patterns different depending on which process (carbon cycling, meteoric influence, or carbonate sedimentation) is exerting primary control? We will generate high resolution carbon isotopic records within a sedimentological and sequence stratigraphic framework along a shore to basin transect of the Early Mississippian Madison shelf and the Late Permian Permian Basin, where there is a high probability that sea level influenced the carbon isotopic patterns. Results from this project will have implications for the methodological approach and application of carbon isotopic records from epicontiential seas and the generated carbon isotopic data will provide important geochemical constraints for carbon cycling and sea water chemistry during the Late Paleozoic Ice Age.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.

该奖项的全部或部分资金来源于《2021 年美国救援计划法案》（公法 117-2）。在古生代（541-2.519 亿年前）期间，我们的大陆多次被浅海淹没。这些浅海中形成的岩石的化学成分记录了碳如何在海洋、大气、生物圈和沉积物之间移动（碳循环）的细节。该项目将重点了解海平面变化如何影响碳循环记录，这将增进我们对地球气候历史的了解。 十名本科生将参与该项目并获得宝贵的现场和实验室经验。生成的数据将用于构建教学模块，帮助公众了解地质学家如何研究地球气候历史。该项目将通过解决以下问题来探索古代陆表碳酸盐环境中海平面和碳同位素记录之间的关系：1）海平面变化是否会导致大量碳酸盐同位素值产生一致且可解析的模式？ 2）如果这些模式确实存在，它们是否可以在海平面变化的多个尺度上解决； 3) 模式是否因施加主要控制的过程（碳循环、大气影响或碳酸盐沉积）而不同？我们将在早密西西比麦迪逊陆架和晚二叠纪盆地的海岸到盆地横断面的沉积学和层序地层框架内生成高分辨率碳同位素记录，其中海平面很可能影响碳同位素模式。该项目的结果将对陆海碳同位素记录的方法学方法和应用产生影响，生成的碳同位素数据将为古生代晚期冰河时期的碳循环和海水化学提供重要的地球化学约束。该奖项反映了 NSF 的法定使命，并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，被认为值得支持。