US-Turkish Cooperative Research: A Preliminary Study of Mantle Processes during African-Anatolian Convergence

0429110 FlowerDescription:该项目支持美国团队之间的合作研究，其中包括伊利诺伊州芝加哥伊利诺伊大学地球与环境科学系Martin Flower博士、伊利诺伊州芝加哥自然历史博物馆同位素地球化学实验室Philip Janney博士、俄亥俄州牛津迈阿密大学地质系Elisabeth Widom博士和土耳其团队，包括土耳其阿达纳Cukuruva大学地质系Osman Parlak博士和Hakan Coban博士。土耳其伊斯帕塔苏莱曼德米雷尔大学地质系。他们计划对非洲-安纳托利亚辐合期间的地幔过程进行初步研究。作为地球内部的热探测器和成分探测器，岩浆岩为研究对流的上地幔和岩石圈板块之间的相互作用提供了“窗口”。该项目包括实地考察、研究规划访问和初步数据采集，为土耳其南部的地球化学、同位素和40Ar/39年龄定年研究的长期计划做准备。该研究有望在不同样品的基础上提供软流圈岩浆源的热史和污染史记录。蛇绿岩是碰撞前俯冲成核和弧后打开事件的产物。相比之下，超经典岩浆似乎反映了软流圈的扰动，这些扰动与碰撞后的撕裂和先前俯冲“板块”的断裂有关。地球化学特征样品的初步数据将大大提高我们未来的采样和分析策略。完整的碰撞前和碰撞后地幔熔融产物数据库将允许测试在当前活跃的会聚板块边界开发的实际模型。该项目将受益于“TETHYS”地理信息系统数据库，并为该数据库做出贡献。Martin Flower (UIC), Eric Sandvol（密苏里大学），Shuhab Khan（休斯顿大学）和Mohamed Sultan（纽约州立大学布法罗分校），在伊利诺伊大学超级计算中心建立一个永久的“GEON”http://www.geongrid.org/about.html节点。该项目在教科文组织和国际地质调查局的支持下启动，将特提斯构造带的地球化学、地球物理和地质年代学数据与遥感图像和数字地质信息相结合。范围和更广泛的影响：在美国和土耳其合作实验室工作的本科生和研究生可以参与这项研究，获得分析工作的经验，并有机会为在国内和国际会议上展示的结果做出贡献。PIs将鼓励高水平的土耳其和美国研究生参与我们提议的研究，并将在“东地中海地区地球动力学和活动构造国际研讨会”（将于2005年5月在伊斯坦布尔卡迪尔哈斯大学举行）和其他主要会议上报告初步结果。Drs。Coban和Parlak正在向TUBITAK提交一份平行提案，以支持土耳其合作项目的国际旅行，以及在土耳其的实地和研究费用。该项目由OISE和地球科学司联合资助。

0429110 FlowerDescription: This project supports collaborative research between a U.S. team including Dr. Martin Flower, Department of Earth and Environmental Sciences, University of Illinois, Chicago, Illinois, Dr. Philip Janney, Isotope Geochemistry Laboratory, The Field Museum of Natural History, Chicago, Illinois and Dr. Elisabeth Widom, Department of Geology, Miami University, Oxford, Ohio and a Turkish team including Dr. Osman Parlak, Department of Geology, Cukuruva University, Adana, Turkey and Dr. Hakan Coban, Department of Geology, Suleyman Demirel University, Isparta, Turkey. They plan to conduct a Preliminary Study of Mantle Processes during African-Anatolian Convergence. As thermal and compositional probes of Earth's interior, magmatic rocks offer "windows" for studying interactions between the convecting upper mantle and lithospheric plates. The project involves fieldwork, research-planning visits, and preliminary data acquisition in preparation for a long-term program of geochemical, isotopic, and 40Ar/39age-dating studies in southern Turkey. The research is expected to provide a record of the thermal and contamination history of asthenospheric magma sources based on various samples. The ophiolites represent products of pre-collision subduction nucleation and back-arc opening events. In contrast, ultrapotassic magmas appear to reflect asthenospheric perturbations related to post-collision tearing and breakoff of previously subducting 'slabs'. Preliminary data for geochemically- characterized samples will greatly enhance our future sampling and analytical strategies. The completed database pre- and post-collision mantle melting products will allow the testing of actualistic models developed at currently active convergent plate boundaries. The project will benefit from and contribute to the 'TETHYS' GIS database, a project funded to Drs. Martin Flower (UIC), Eric Sandvol (University of Missouri), Shuhab Khan (University of Houston), and Mohamed Sultan (SUNY- Buffalo), building a permanent 'GEON' http://www.geongrid.org/about.html node at the University of Illinois Supercomputing Center. Initiated with support from UNESCO and IUGS, this project is integrating geochemical, geophysical, and geochronologic data for the Tethyan tectonic belt with remote sensed imagery and digital geologic information. Scope and broader impact: Undergraduate and graduate students that are working in the collaborating laboratories in the U.S. and Turkey can be involved in this research, gaining experience in analytical work, with the opportunity to contribute to results that are presented at national and international meetings. The PIs will encourage high-caliber Turkish and US graduate student participation in our proposed research and will report preliminary results at the "International Symposium on Geodynamics and Active Tectonics of the Eastern Mediterranean region" (to be held in May 2005 at the Kadir Has University, Istanbul) and other major meetings. Drs. Coban and Parlak are submitting a parallel proposal to TUBITAK to support international travel for Turkish co-PIs, and field and research costs in Turkey. This project is being funded jointly by OISE and the Division of Earth Sciences.