US-Tanzania Planning Visit: Investigating high-latitude climate change recorded in upper Paleozoic non-marine strata of East Africa

美国-坦桑尼亚计划访问：调查东非上古生代非海洋地层记录的高纬度气候变化

• 批准号: 1033143
• 负责人: Michael Soreghan
• 金额: $ 2.04万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1033143&HistoricalAwards=false
• 关键词: US; Tanzania; Planning; Visit; Investigating

This award supports a planning visit for Dr. Michael Soreghan at the University of Oklahoma and two US graduate students to develop new collaborative research projects in the geosciences with Tanzanian colleagues. The US team will meet with Dr. Hudson Nkotagu at the University of Dar es Salaam and the Tanzanian Geological Survey to develop plans for future international collaborative research proposals to NSF. The probable outcomes of the proposed research will be 1) a detailed record of regional climate change for the late Paleozoic; and 2) a sequence stratigraphic model for certain lacustrine rocks in order to predict the distribution of economically viable deposits of coal and uranium within these strata.Intellectual Merit. Ultimate results of this research will provide a high-resolution terrestrial record of past climate change for high-latitude Pangaea that can be compared to better studied records from the high-latitude marine realm and the (paleo)tropics across Pangaea. One of the main keys to advancing our understanding of "deep time" (pre-Quaternary) climate is the need for better age constraints, since lack of correlation of key climate records has precluded high-resolution, spatially extensive studies of deep-time climate. Thus an immediate outcome of the proposed planning fieldwork will be improved age constraints for these poorly dated lacustrine strata in collaboration with Dr. M. Schmitz (Boise State University). In addition, a detailed analysis of facies changes and the climatic control on these facies transitions will provide a predictive model for evaluating the distribution of the coal and uranium bearing strata in these basins.Broader Impacts. Results of the proposed research ultimately bears on the question of whether low- and high-latitude climate change is synchronous and/or which responds more sensitively to change, and thus is relevant to both recent and future climate change. Results will also have potential economic value to Tanzania through enhanced depositional models of coal and uranium-bearing strata. In addition to scientific impacts, the proposed field trip will provide a mechanism to enhance geological field skills for African scientists and African and U.S. students. Field experiences and research projects are a critical component of any geologic training, but are very limited in the geological curricula of many African universities. The PI has a long-standing interest in science education and in incorporating active science in the classroom, and the results and experiences from this project will be incorporated in general education, major, and graduate-level courses.This award is being funded by the Office of International Science and Engineering's, Africa, Near East, and South Asia program.

该奖项支持俄克拉荷马大学的迈克尔·索尔根（Michael Soreghan）博士和两名美国研究生的计划访问，以与坦桑尼亚同事一起开发新的合作研究项目。美国团队将与达累斯萨拉姆大学和坦桑尼亚地质调查局的Hudson Nkotagu博士会面，以制定向NSF的未来国际合作研究建议。拟议的研究的可能结果将是1）晚古生代的区域气候变化的详细记录； 2）某些湖间岩石的序列地层模型，以预测这些地层内煤和铀经济可行的沉积物的分布。这项研究的最终结果将为高纬度Pangea提供过去气候变化的高分辨率地面记录，可以将其与来自Pangea的高纬度海洋领域和（古）热带地区的更好研究的记录进行比较。促进我们对“深度时间”（初期前）气候的理解的主要关键之一是需要更好的年龄限制，因为缺乏关键气候记录的相关性缺乏高分辨率的高分辨率，在空间上对深度时间的气候进行了广泛的研究。因此，与施密西州立大学（Boise State University）博士合作，这些较旧的湖间阶层的年龄限制将改善拟议规划现场工作的直接结果。此外，对这些相变的相变的详细分析以及这些相过渡的气候控制将为评估这些盆地中煤炭和铀轴承层的分布提供预测模型。拟议研究的结果最终对低纬度和高纬度气候变化是否同步和/或对变化的反应更为敏感，因此与最近和未来的气候变化有关。结果还将通过增强煤炭和含铀地层的沉积模型对坦桑尼亚具有潜在的经济价值。除了科学的影响外，拟议的实地考察还将提供一种机制，以增强非洲科学家以及非洲和美国学生的地质现场技能。现场经验和研究项目是任何地质培训的关键组成部分，但在许多非洲大学的地质课程中都非常有限。 PI对科学教育具有长期的兴趣，并在课堂上纳入了活跃的科学，该项目的结果和经验将纳入通识教育，专业和研究生级课程中。该奖项由国际科学和工程办公室，非洲，近东和南亚计划提供资金。