Where are the remnants of a Jurassic ocean in the eastern Mediterranean region?
文献类型：期刊论文
| 作者 | Eyuboglu, Yener1; Dudas, Francis O.2; Santosh, M.3,4; Xiao, Yilin5; Yi, Keewook6; Chatterjee, Nilanjan2; Wu, Fu-Yuan7; Bektas, Osman1 |
| 刊名 | GONDWANA RESEARCH
 |
| 出版日期 | 2016-05-01 |
| 卷号 | 33页码:63-91 |
| 关键词 | Geochemistry Tectonics Jurassic Eastern Pontides Orogenic Belt Alpine-himalayan Neotethys |
| DOI | 10.1016/j.gr.2015.08.017 |
| 文献子类 | Article |
| 英文摘要 | The subduction polarity of Tethyan oceanic lithosphere during Jurassic is a controversial topic in relation to the geodynamic evolution of the Alpine-Himalayan system. We present new geological, geochemical and zircon U-Pb data from four different regions of the Eastern Pontides Orogenic Belt, a key area of the Alpine-Himalayan system. We discuss the origin of the magmatism and also the existence of an ocean in the eastern Mediterranean region during the Jurassic period. Jurassic intrusions, predominantly gabbro, tonalite and minor diorite, are well exposed in the southern and axial zones of the orogenic belt. Thermobarometry indicates that high-pressure (6-10 kb) crystallization of these intrusions occurred at temperatures of 1183-1250 degrees C. Zircon U-Pb dating from 10 samples show ages between 195 and 165 Ma, indicating that magmatism occurred between Sinemurian and Callovian time. We characterize the intrusions from electron microprobe, zircon geochronology, and whole rock and Sr, Nd, and Pb isotopes. Our data show that the studied intrusions are broadly tholeiitic, except for two calc-alkaline bodies, and formed in an arc-related setting with minimal involvement of older crust or sediment. The most widely accepted model proposes that the ultramafic-mafic rocks exposed between the Pontide arc and the Tauride belt are remnants of a Jurassic Penrose-type and/or suprasubduction zone ophiolite. However, new zircon U-Pb age data from mafic lithologies cutting the Kop ultramafic massif do not support this model and clearly indicate that the ultramafic lithologies are Paleozoic or older in age and are not remnants of a Jurassic ocean that known as "Northern Branch of Neotehtys". (C) 2015 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved. |
| WOS关键词 | NE TURKEY IMPLICATIONS ; PONTIDES OROGENIC BELT ; PB ZIRCON CHRONOLOGY ; U-PB ; NORTHEAST TURKEY ; TRACE-ELEMENT ; MAGMATIC ARC ; ISLAND-ARC ; GEODYNAMIC EVOLUTION ; CONTINENTAL-MARGIN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000384702800005 |
| 资助机构 | Scientific and Research Council of Turkey (TUBITAK)(112Y358 ; Scientific and Research Council of Turkey (TUBITAK)(112Y358 ; Karadeniz Technical University Research Fund(8980) ; Karadeniz Technical University Research Fund(8980) ; 105Y066) ; 105Y066) ; Scientific and Research Council of Turkey (TUBITAK)(112Y358 ; Scientific and Research Council of Turkey (TUBITAK)(112Y358 ; Karadeniz Technical University Research Fund(8980) ; Karadeniz Technical University Research Fund(8980) ; 105Y066) ; 105Y066) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53308]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 作者单位 | 1.Karadeniz Tech Univ, Dept Geol Engn, TR-61080 Trabzon, Turkey 2.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA 3.Univ Adelaide, Dept Earth Sci, Adelaide, SA 5005, Australia 4.China Univ Geosci, Sch Earth Sci & Resources, 29 Xueyuan Rd, Beijing 100083, Peoples R China 5.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China 6.Korea Basic Sci Inst, YangCheong 804-1, Cheongwon 363883, Chungbuk, South Korea 7.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Eyuboglu, Yener,Dudas, Francis O.,Santosh, M.,et al. Where are the remnants of a Jurassic ocean in the eastern Mediterranean region?[J]. GONDWANA RESEARCH,2016,33:63-91. |
| APA | Eyuboglu, Yener.,Dudas, Francis O..,Santosh, M..,Xiao, Yilin.,Yi, Keewook.,...&Bektas, Osman.(2016).Where are the remnants of a Jurassic ocean in the eastern Mediterranean region?.GONDWANA RESEARCH,33,63-91. |
| MLA | Eyuboglu, Yener,et al."Where are the remnants of a Jurassic ocean in the eastern Mediterranean region?".GONDWANA RESEARCH 33(2016):63-91. |
入库方式： OAI收割
来源：地质与地球物理研究所
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