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 Michael Soreghan 博士和两名美国研究生计划访问，与坦桑尼亚同事开发新的地球科学合作研究项目。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，为未来向 NSF 提交的国际合作研究提案制定计划。拟议研究的可能结果将是：1）晚古生代区域气候变化的详细记录； 2）某些湖相岩石的层序地层模型，以预测这些地层中经济上可行的煤和铀矿床的分布。智力价值。这项研究的最终结果将提供高纬度盘古大陆过去气候变化的高分辨率陆地记录，可以与高纬度海洋领域和盘古大陆（古）热带地区更好的研究记录进行比较。推进我们对“深时”（前第四纪）气候的理解的关键之一是需要更好的年龄限制，因为关键气候记录缺乏相关性阻碍了对深时气候的高分辨率、空间广泛的研究。因此，拟议的实地规划规划的直接成果将是与 M. Schmitz 博士（博伊西州立大学）合作，改善这些年代不清的湖泊地层的年龄限制。此外，对相变化和气候对这些相转变的控制的详细分析将为评估这些盆地中煤和含铀地层的分布提供预测模型。更广泛的影响。拟议研究的结果最终涉及低纬度和高纬度气候变化是否同步和/或对变化的反应是否更敏感的问题，从而与近期和未来的气候变化相关。通过增强煤和含铀地层的沉积模型，研究结果还将对坦桑尼亚产生潜在的经济价值。除了科学影响之外，拟议的实地考察还将提供一种机制，以提高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重要组成部分，但在许多非洲大学的地质课程中却非常有限。 PI 对科学教育和将主动科学融入课堂有着长期的兴趣，该项目的成果和经验将纳入普通教育、专业和研究生课程。该奖项由国际科学与工程办公室的非洲、近东和南亚项目资助。