Multiple volcanic episodes of the Kermanshah forearc basin, SW Iran: a record of the deactivation and re-initiation of Neotethyan subduction involving a mid-ocean ridge
文献类型：期刊论文
| 作者 | Yang, Tiannan4; Chen, Jianlin2,3 ; Hou, Zengqian4; Xin, Di4; Aghazadeh, M.1
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| 刊名 | JOURNAL OF THE GEOLOGICAL SOCIETY
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| 出版日期 | 2023 |
| 卷号 | 180期号:1 |
| 关键词 | PB ZIRCON AGES VELOCITY STRUCTURE LURESTAN PROVINCE SPREADING RIDGES OPHIOLITES EVOLUTION COMPLEX CONSTRAINTS SEISMICITY BENEATH |
| ISSN号 | 0016-7649 |
| DOI | 10.1144/jgs2022-028 |
| 英文摘要 | Numerical simulations and theoretical analyses predict that forearc ophiolites probably record the end of subduction followed by re-initiation. We report here the results of a field study and new geochronological data that enable identification of the Kermanshah forearc basin, SW Iran. This basin is filled with two terrestrial volcaniclastic successions separated by an Upper Cretaceous reef facies limestone. Early Late Cretaceous ocean island basalts, early Eocene incompatible element-enriched midocean ridge basalts/normal-type mid-ocean ridge basalts and late Eocene arc basalts of the basin indicate that Neotethyan subduction ended during the early Late Cretaceous and then re-initiated during the late Eocene. We suggest that the Neotethyan Ocean between the Iranian and Arabian continents consisted of leading and trailing oceanic plates separated by a mid-ocean ridge (MOR). Subduction of the leading plate generated the Jurassic–Early Cretaceous Sanandaj–Sirjan arc, which was ended by MOR–trench collision. The Zagros late Early Cretaceous forearc ophiolites represent the youngest/hottest segments of the leading plate emplaced during the MOR–trench collision. Subsequently, subduction of the MOR generated the forearc basin and basalts with diverse geochemistry. After c. 60 myr, the cooled trailing plate started to subduct, generating the late Eocene arc basalts. This model has significant implications for investigating and understanding other fossil subduction zones elsewhere in the world. ? 2022 The Author(s). Published by The Geological Society of London. All rights reserved. |
| WOS研究方向 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000863101900001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80239]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 作者单位 | 1.Department of Geology, Payam-e-Noor University, Tabriz, Iran 2.CAS Center for Excellence in Deep Earth Science, Guangzhou; 510640, China 3.State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640, China 4.Institute of Geology, Chinese Academy of Geological Sciences, Beijing; 100037, China |
| 推荐引用方式 GB/T 7714 | Yang, Tiannan,Chen, Jianlin,Hou, Zengqian,et al. Multiple volcanic episodes of the Kermanshah forearc basin, SW Iran: a record of the deactivation and re-initiation of Neotethyan subduction involving a mid-ocean ridge[J]. JOURNAL OF THE GEOLOGICAL SOCIETY,2023,180(1). |
| APA | Yang, Tiannan,Chen, Jianlin,Hou, Zengqian,Xin, Di,&Aghazadeh, M..(2023).Multiple volcanic episodes of the Kermanshah forearc basin, SW Iran: a record of the deactivation and re-initiation of Neotethyan subduction involving a mid-ocean ridge.JOURNAL OF THE GEOLOGICAL SOCIETY,180(1). |
| MLA | Yang, Tiannan,et al."Multiple volcanic episodes of the Kermanshah forearc basin, SW Iran: a record of the deactivation and re-initiation of Neotethyan subduction involving a mid-ocean ridge".JOURNAL OF THE GEOLOGICAL SOCIETY 180.1(2023). |
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来源：广州地球化学研究所
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