IRES: U.S.-Egypt Collaborative Research Desert Eyes- Origin and Evolution of Enigmatic Domes and Basins in the Stable Platform of Egypt

IRES：美国-埃及合作研究沙漠之眼——埃及稳定台地神秘圆顶和盆地的起源和演化

• 批准号: 1030224
• 负责人: Barbara Tewksbury
• 金额: $ 6.31万
• 依托单位: Hamilton College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-04-01 至 2016-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1030224&HistoricalAwards=false
• 关键词: IRES; U.S.; Egypt; Collaborative; Research

1030224/1030230Tewksbury/ Hogan Hamilton College/ Missouri University of Science and Technology IRES: U.S.-Egypt Collaborative Research Desert Eyes- Origin and Evolution of Enigmatic Domes and Basins in the Stable Platform of Egypt This is a collaborative activity for student research lead by US PIs Barbara Tewksbury, Hamilton College and John Hogan, Missouri University of Science and Technology. They will launch a 3-year international research experience for 22 US graduate and undergraduate students in geological and geophysical field research in the Western Desert of Egypt in partnership with Egyptian faculty and students. The objectives are 1) to involve students in hypothesis-driven, original research on fold and fault structures in the Stable Platform of Egypt, and 2) to provide multi-faceted experiences and training that increase students? capacities to undertake collaborative international research in the future. Intellectual Merit High resolution satellite imagery reveals extraordinary and largely unstudied fold and fault structures in the Western Desert of Egypt over a distance of nearly 600 km between 23.0° and 27.7° N. The reconnaissance work shows that these structures define fields of small domes separated by narrow synclines in the north and elongate domes and basins that are commonly, but not always, aligned along discreet fault zones in the south. Structures that are a hybrid of both end member types occur between the two regions. The research hypotheses are: 1) dome fields in the north resulted from selective diagenesis of silica in limestone above a polygonal fault network, as suggested for structures previously studied only in the North Sea, and 2) elongate domes and basins along faults in the south resulted from a complex interplay among slip along reactivated basement faults, fault-related folding, and existing folds initiated by processes that produced the dome fields in the north. US and Egyptian students and faculty will engage in multidisciplinary research to test these hypotheses and to constrain possible models for origin and evolution of these structures. Prior to working in the field, US and Egyptian students and faculty will collaborate to conduct detailed structural mapping using high resolution satellite imagery at visible and infrared wavelengths. In the field in Egypt, the project will consist of targeted detailed geologic field mapping and sample collection for fabric and chemical analysis, and acquisition of both seismic reflection and refraction data to constrain the 3D geometry of the folds and faults. The project will use wikis and web video conferencing to enable participants in the U.S. and Egypt to collaborate effectively on satellite image analysis before going into the field and to sustain discussion and analysis of the data well beyond the field experience.Broader Impacts The northern dome fields are a good candidate for the only on-land example of North Sea-style dome fields, and the extraordinary, unvegetated bedrock exposures in the Western Desert over thousands of square kilometers offer a unique opportunity to add to the literature on the geometry and kinematics of fault-related folds.The project will develop permanent collaborations between US and Egyptian faculty and students by integrating collaborative investigative activities via wikis and web video conferencing into courses taught at the collaborating institutions. Outstanding examples of structural interpretation using remote sensing that emerge as research on the project progresses will be used to develop these activities, and students from other institutions will benefit as well, because all activities developed will be submitted to the online collections of the NSF-funded project On the Cutting Edge for teaching undergraduate geoscience. The project will also hold a workshop at the annual national meeting of the Geological Society of America in Year 3 of the project focused on best practice in international collaboration and preparing students for international work. The outcomes of this workshop will be submitted to the Cutting Edge collections.

1030224/1030230图斯伯里/霍根汉密尔顿学院/密苏里州科技大学 IRES：美国-埃及合作研究沙漠之眼-埃及稳定平台中神秘圆顶和盆地的起源和演变这是一项由美国PI芭芭拉图克斯伯里，汉密尔顿学院和约翰霍根，密苏里州科技大学领导的学生研究合作活动。 他们将与埃及教师和学生合作，为22名美国研究生和本科生在埃及西部沙漠进行地质和地球物理实地研究提供为期3年的国际研究经验。 目标是1）让学生参与埃及稳定台地褶皱和断层结构的假设驱动的原创研究，以及2）提供多方面的经验和培训，提高学生？今后开展国际合作研究的能力。 知识产权高分辨率卫星图像揭示了埃及西部沙漠23.0°至27.7° N之间近600公里距离内非凡且基本上未研究的褶皱和断层结构。 勘察工作表明，这些构造在北部形成了由狭窄向斜分隔的小穹窿，而在南部则形成了通常（但并非总是）沿沿着离散断层带排列的细长穹窿和盆地。 两种端元类型的混合结构出现在两个区域之间。研究假设是：1）北部的穹丘区是由多边形断层网上方石灰岩中二氧化硅的选择性成岩作用造成的，这与先前仅在北海研究的构造相同; 2）南部沿沿着断层的细长穹丘和盆地是由沿沿着活化基底断层的滑动、与断层相关的褶皱以及由北部穹丘区形成过程引发的现有褶皱之间的复杂相互作用造成的。 美国和埃及的学生和教师将从事多学科研究，以测试这些假设，并限制这些结构的起源和演变的可能模型。在该领域工作之前，美国和埃及的学生和教师将合作使用可见光和红外波长的高分辨率卫星图像进行详细的结构测绘。 在埃及的实地，该项目将包括有针对性的详细地质实地测绘和样品收集，以进行组构和化学分析，并采集地震反射和折射数据，以确定褶皱和断层的三维几何形状。 该项目将使用维基和网络视频会议，使美国和埃及的参与者能够在进入现场之前有效地合作进行卫星图像分析，并保持对数据的讨论和分析，远远超出现场经验。更广泛的影响北方圆顶场是北海风格圆顶场的唯一陆地示例的良好候选者，西部沙漠中数千平方公里的无植被基岩暴露提供了一个独特的机会，可以增加有关断层几何学和运动学的文献，该项目将通过维基和网络视频会议将合作调查活动整合到课程中，从而在美国和埃及的教师和学生之间建立永久合作关系在合作机构任教。 随着项目研究的进展，使用遥感进行结构解释的杰出例子将用于开发这些活动，来自其他机构的学生也将受益，因为开发的所有活动将提交给NSF资助的项目On the Cutting Edge的在线收藏，用于本科生地球科学教学。该项目还将在该项目第三年的美国地质学会年度全国会议上举办一个研讨会，重点是国际合作的最佳做法，并为学生从事国际工作做好准备。 本次研讨会的成果将提交给尖端收藏。