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Zircon xenocrysts in late cretaceous magmatic rocks in the kermanshah ophiolite: link to Iran continental crust supports the subduction initiation model

文献类型：期刊论文

作者Moghadam, H. S.1,2,4; Li, Q. L.2; Stern, R. J.3; Griffin, W. L.4; O'Reilly, S. Y.4
刊名INTERNATIONAL GEOLOGY REVIEW
出版日期2022-02-25
页码12
关键词Zircon U-pb geochronology plagiogranite zagros ophiolites Iran
ISSN号0020-6814
DOI10.1080/00206814.2022.2043193
英文摘要Geochronological and geochemical data show that Late Cretaceous Zagros ophiolites were generated by forearc seafloor spreading during a subduction initiation event along the southwestern margin of Iran. These ophiolites define a similar to 3000 km long belt passing from Cyprus to Turkey, Syria, Iran, the UAE, and Oman. Ten samples of plagiogranites, amphibole gabbros and diorites of the Kermanshah ophiolite yield U-Pb zircon magmatic ages indicating ophiolite formation at 98 to 96 Ma. Some Kermanshah rocks also contain abundant zircon xenocrysts with age peaks (in order of decreasing size): Triassic (similar to 247 Ma), mid-Paleoproterozoic (similar to 2150 Ma), Late Paleoproterozoic (similar to 1850 Ma), Late Ediacaran (similar to 560 Ma), Early Cretaceous (similar to 140 Ma), and Tonian (similar to 850 Ma). Similar age peaks are seen in magmatic and detrital rocks of Iranian crust to the north. The xenocrysts have epsilon Hf(t) values from +6.3 to - 21.6, corresponding to depleted mantle Hf model ages (T-DM) of 0.6 to 3.6 Ga. The xenocryst age peaks are similar to those of zircons in Iranian continental crust. The occurrence of zircon xenocrysts in the Kermanshah ophiolite suggests that this formed adjacent to the Iranian continent, as expected for Late Cretaceous subduction initiation.
WOS关键词U-PB GEOCHRONOLOGY ; TECTONIC EVOLUTION ; NEO-TETHYS ; OCEANIC PLAGIOGRANITES ; SEMAIL-OPHIOLITE ; IGNEOUS ROCKS ; MANTLE WEDGE ; ARC CRUST ; CONSTRAINTS ; CHROMITITES
资助项目National Key Research and Development Program of China[2016YFE0203000]
WOS研究方向Geology
语种英语
WOS记录号WOS:000760151500001
出版者TAYLOR & FRANCIS INC
资助机构National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/104939]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Moghadam, H. S.
作者单位1.Damghan Univ, Sch Earth Sci, Damghan, Iran
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
3.Univ Texas Dallas, Geosci Dept, Richardson, TX 75083 USA
4.Macquarie Univ, Ccfs & Gemoc Arc Natl Key Ctr, Sydney, NSW, Australia
推荐引用方式
GB/T 7714		 Moghadam, H. S.,Li, Q. L.,Stern, R. J.,et al. Zircon xenocrysts in late cretaceous magmatic rocks in the kermanshah ophiolite: link to Iran continental crust supports the subduction initiation model[J]. INTERNATIONAL GEOLOGY REVIEW,2022:12.
APA Moghadam, H. S.,Li, Q. L.,Stern, R. J.,Griffin, W. L.,&O'Reilly, S. Y..(2022).Zircon xenocrysts in late cretaceous magmatic rocks in the kermanshah ophiolite: link to Iran continental crust supports the subduction initiation model.INTERNATIONAL GEOLOGY REVIEW,12.
MLA Moghadam, H. S.,et al."Zircon xenocrysts in late cretaceous magmatic rocks in the kermanshah ophiolite: link to Iran continental crust supports the subduction initiation model".INTERNATIONAL GEOLOGY REVIEW (2022):12.

入库方式： OAI收割

来源：地质与地球物理研究所

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