Collaborative Research: Snapshots of Miocene to Recent Paleoenvironmental and Paleoecological Conditions in the Northern Neotropics

合作研究：中新世到北部新热带地区近期古环境和古生态条件的快照

• 批准号: 2029102
• 负责人: Jonathan Obrist Farner
• 金额: $ 60.43万
• 依托单位: Missouri University of Science and Technology
• 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: 2021-08-15 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2029102&HistoricalAwards=false
• 关键词: Collaborative; Research; Snapshots; Miocene; Recent

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2).During the last 20 million years, Earth has experienced several climatic changes that affected environmental and ecological conditions in several locations around the world. While numerous studies from high latitude regions have provided a wealth of information about the effects of these past climatic fluctuations, how they affected conditions in the continental tropics is poorly known, mainly due to the lack of long geological records that can be used for scientific investigations. In this project, the Lake Izabal Basin in Guatemala, which preserves one of the longest records of continental sediments in the tropics, will be studied to develop a better understanding of how the area responded to key climate events in the past. In addition to the project’s scientific outcomes, the project will provide educational and research opportunities to two graduate students through participation in an international research project. The project also will reach a broader audience through the development of geoscience class modules for elementary and middle school science classes and educational geoscience workshops for K-12 science teachers. While numerous studies from high latitude regions have provided a wealth of information about the effects of late Cenozoic climatic fluctuations on environmental and ecological conditions, our knowledge from tropical regions is minimal by comparison. The proposed project focuses on the intersection of sedimentary systems and ecosystems in the Lake Izabal Basin in eastern Guatemala, a large pull-apart basin that contains a thick sedimentological record that extends into the Miocene. The investigation will use the sedimentological record through the study of outcrop data representing the basin’s basement and initial infill from the Oligocene-Pliocene, industry-acquired seismic data covering the Miocene-Recent, drill cuttings from a well spanning the Miocene-Recent, and long sediment cores (10 m) covering the last 30,000 years. The project will provide educational and international research opportunities to two graduate students through training in geophysical, sedimentological, and palynological data acquisition, processing, and interpretation, thereby contributing towards a stronger geoscience workforce. The project will also reach out to a broader audience by visiting science classrooms in Missouri and presenting and sharing research results during STEM days for elementary and middle school female students at Missouri University of Science and Technology. Finally, involvement and collaboration with Guatemalan institutions will provide international research opportunities and collaborations and enhance transfer of knowledge among U.S. and Guatemalan collaborators.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根据《2021 年美国救援计划法案》（公法 117-2）提供。在过去 2000 万年中，地球经历了几次气候变化，影响了世界各地多个地点的环境和生态条件。虽然来自高纬度地区的大量研究提供了有关过去这些气候波动影响的丰富信息，但人们对它们如何影响大陆热带地区的状况却知之甚少，这主要是由于缺乏可用于科学研究的长期地质记录。在该项目中，将对危地马拉的伊萨巴尔湖盆地进行研究，该盆地保存着热带大陆沉积物最长的记录之一，将对其进行研究，以更好地了解该地区如何应对过去的关键气候事件。除了该项目的科学成果外，该项目还将通过参与国际研究项目为两名研究生提供教育和研究机会。该项目还将通过为中小学科学课程开发地球科学课程模块以及为 K-12 科学教师举办教育地球科学研讨会来吸引更广泛的受众。 尽管来自高纬度地区的大量研究提供了有关新生代晚期气候波动对环境和生态条件影响的大量信息，但相比之下，我们对热带地区的了解却很少。拟议项目的重点是危地马拉东部伊萨巴尔湖盆地沉积系统和生态系统的交汇处，这是一个大型拉分盆地，包含延伸至中新世的厚沉积记录。该调查将通过研究代表盆地基底和渐新世-上新世初始填充物的露头数据、涵盖中新世-近代工业采集的地震数据、跨越中新世-近代井的钻屑以及覆盖过去 30,000 年的长沉积岩心 (10 m) 来使用沉积学记录。该项目将通过地球物理、沉积学和孢粉学数据采集、处理和解释方面的培训，为两名研究生提供教育和国际研究机会，从而为建设更强大的地球科学队伍做出贡献。该项目还将通过参观密苏里州的科学教室，并在密苏里州科技大学中小学生的 STEM 日期间展示和分享研究成果，来接触更广泛的受众。最后，与危地马拉机构的参与和合作将提供国际研究机会和合作，并加强美国和危地马拉合作者之间的知识转移。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。

项目成果

A millennium of anthropic and climate dynamics in the Lake Izabal Basin, eastern lowland Guatemala

• DOI: 10.1016/j.revpalbo.2023.104872
• 发表时间: 2023-02
• 期刊: Review of Palaeobotany and Palynology
• 影响因子: 1.9
• 作者: Erdoo Mongol;F. Oboh-Ikuenobe;Jonathan Obrist‐Farner;J. Moreno;A. Correa-Metrio

Incoherency in Central American Hydroclimate Proxy Records Spanning the Last Millennium

• DOI: 10.1029/2022pa004445
• 发表时间: 2023-03
• 期刊: Paleoceanography and Paleoclimatology
• 影响因子: 3.5
• 作者: Jonathan Obrist‐Farner;B. Steinman;N. Stansell;J. Maurer