Collaborative Study: Tectonogenesis of Khoy Ophiolite, Northwestern Iran

合作研究：西北科伊蛇绿岩的构造成因。伊朗Ghazi和Pessagno这项建议是一项合作调查，重点是浮游有孔虫生物地层学、放射虫生物地层学、时序地层学和Khoy蛇绿岩喷出段及其上方的沉积岩的微相分析。伊朗西北部的科伊蛇绿岩是伊朗最大、研究最少的蛇绿岩之一。此外，它还出露得非常好，代表侵位前、侵位和侵位后事件(单位)的大多数地质元素保存完好。科伊蛇绿岩位于伊朗和其他中东蛇绿岩与土耳其和地中海蛇绿岩的交界处。将拟议的合作工作产生的数据与共同首席调查员A.Mohamad Ghazi(EAR-9903249)产生的地球化学、Pb-Ndsr同位素和40Ar-39Ar结果相结合，应有助于更好地了解科伊蛇绿岩的构造成因，并确定它是否确实是特提斯洋壳的一部分，是否为存在于白垩纪特提斯洋南部的假定的脊变断裂系统扩张轴的一部分。该项目由国际方案司参与资助。

ABSTRACTCollaborative Investigation: Tectonogenesis of the Khoy ophiolite, NW. Iran Ghazi and PessagnoThis proposal is a collaborative investigation that focuses on the planktonic foraminiferal biostratigraphy, radiolarian biostratigraphy, choronostratigraphy and microfacies analysis of sedimentary rocks occurring within and above the extrusive member of the Khoy ophiolite. The Khoy ophiolite of northwestern Iran is one of the largest and least studied Iranian ophiolites. Moreover, it is superbly exposed with most geologic elements representing pre-, syn-, and post emplacement events (units) well preserved. The Khoy ophiolite is located at a junction where the Iranian and other Middle Eastern ophiolites are connected to the Turkish and Mediterranean ophiolites. The integration of the data resulting from the proposed collaborative effort coupled with geochemical, Pb-Nd-Sr isotopic and 40Ar-39Ar results generated by the Co-Principle investigator A. Mohamad Ghazi (EAR-9903249) should lead to a better understanding of the tectonogenesis of the Khoy ophiolite and to determine whether it is indeed a part of the Tethyan oceanic crust and is a part of the postulated ridge-transform fault system spreading axis that existed in Cretaceous southern Tethys ocean. The project is funded with participation from the Division of International Programs.