US-Egypt Cooperative Research: Structural Evolution of the Neoproterozoic Allaqi-Heiani Suture, Southern Egypt from Remote Sensing and Field Studies

美埃合作研究：通过遥感和实地研究了解埃及南部新元古代 Allaqi-Heiani 缝合带的结构演化

• 批准号: 0323738
• 负责人: Mohamed Abdelsalam
• 金额: $ 2.4万
• 依托单位: University of Texas at Dallas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0323738&HistoricalAwards=false
• 关键词: US; Egypt; Cooperative; Research; Structural

0323738 Abdel-SalamDescription: This project supports a cooperative research between Dr. Mohamed Abdel-Salam, Center for Lithospheric Studies at the University of Texas, Dallas and Dr. Hamed Dowidar, Department of Geology, Ain Shams University, Cairo, Egypt. They plan to conduct field research to study the structural evolution of the Neoproterozoic Allaqi-Heiani Suture in southern Egypt. This structure forms the northernmost arc-arc suture in the Arabian-Nubian Shield that is marked by linear ophiolitic belt. This project will test the hypothesis that the structural styles along the suture change from a fold and thrust belt in the west where the suture trends E-W to shortening zones and strike-slip fault system where the suture trends N-S. Changes in structural styles might be due to the geometry of the orgon front and/or superimposition of younger Neoproterozoic deformation similar to that of the Hamisana Shear Zone. This hypothesis can be tested by remote sensing and field studies. Research will be based on a two-month field trip guided by orbital optical remote sensing imagery including the newly acquired Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data. Field studies will be conducted in southern Egypt during December 2003 and January 2004. The results of this research will outline the evolution of an important structure in the East African Orogen in addition to examining the utility of ASTER data for supporting geological mapping in arid regions. Scope: The results of using ASTER data in the planned geologic and structural analysis are of broad importance, since this study is on a new remote sensing platform. Examination of a well-exposed Neoproterozoic suture and assessment of its variation in structural style by comparison with modern convergent plate margins will also have broad implications as to the nature and modernity of Neoproterozoic plate tectonics. The international collaboration between scientists at Egyptian and U.S. universities will include training in digital image processing and ASTER orbital optical remote sensing analysis. The two collaborators have complementary expertise. Dr. Abdel-Salam has experience in structural geology, geological remote sensing and the Precambrian geology of NE Africa, including extensive work on the suture zones of the Arabian-Nubian shield. The project also involves a Ph.D. student from the University of Texas, Dallas who is doing his dissertation on the tectonic evolution of the suture. The Egyptian collaborator has expertise in the application of a variety of remote sensing techniques to geologic problems. The project will provide an opportunity for an Egyptian scientist to visit UTD and get trained in the principles of digital image processing and remote sensing analysis as applied to geological studies.

0323738 Abdel-Salam描述：该项目支持德克萨斯大学岩石圈研究中心Mohamed Abdel-Salam博士和埃及开罗艾因沙姆斯大学地质系Hamed Dowidar博士之间的合作研究，该中心位于达拉斯。 他们计划进行实地研究，以研究埃及南部新元古代阿拉齐-海亚尼缝合带的构造演化。 该构造形成了阿拉伯-努比亚地盾最北端的弧-弧缝合线，以线状蛇绿岩带为标志。本项目将检验以下假设：沿缝合线沿着的构造样式从缝合线走向E-W的西部褶皱冲断带向缝合线走向N-S的缩短带和走滑断层系统转变。 构造样式的变化可能是由于orgon前锋的几何形状和/或与Hamisana剪切带类似的较年轻的新元古代变形的叠加造成的。这一假设可以通过遥感和实地研究加以检验。 研究将以为期两个月的实地考察为基础，由轨道光学遥感图像引导，包括新获得的高级星载热发射和反射辐射计数据。 2003年12月和2004年1月将在埃及南部进行实地研究。这项研究的结果将概述东非造山带的一个重要结构的演变，此外还将审查ASTER数据在支持干旱地区地质测绘方面的效用。适用范围： 在计划的地质和结构分析中使用ASTER数据的结果具有广泛的重要性，因为这项研究是在一个新的遥感平台上进行的。 通过与现代会聚板块边缘的比较，检查出露良好的新元古代缝合线并评估其结构样式的变化，也将对新元古代板块构造的性质和现代性产生广泛的影响。 埃及和美国大学科学家之间的国际合作将包括数字图像处理和ASTER轨道光学遥感分析方面的培训。这两个合作者具有互补的专门知识。 Abdel-Salam博士在结构地质学、地质遥感和东北非洲前寒武纪地质学方面有经验，包括在阿拉伯-努比亚地盾缝合带方面的大量工作。该项目还涉及一个博士学位。来自德克萨斯大学达拉斯的学生，他正在做关于缝合带构造演化的论文。 埃及合作者具有将各种遥感技术应用于地质问题的专门知识。 该项目将为一名埃及科学家提供一个机会，使其能够访问坦桑尼亚联合共和国，并接受应用于地质研究的数字图像处理和遥感分析原则方面的培训。