Rodinia to Gondwana evolution record, South Sinai, Egypt: Geological and geochronological constraints
文献类型：期刊论文
| 作者 | Abu Anbar, Mohamed4; Abu-Alam, Tamer S.3,6; Ghoneim, Mohamed F.4; Dong, Yunpeng2; Li, Xian-Hua1,7; Ramadan, Dina H.4; Masoud, Ahmed E.4,5 |
| 刊名 | PRECAMBRIAN RESEARCH
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 398页码:23 |
| ISSN号 | 0301-9268 |
| 关键词 | Arabian-Nubian Shield Wadi Seih area Sinai U-Pb zircon dating Rodinia assembly Gondwana amalgamation Gneisses |
| DOI | 10.1016/j.precamres.2023.107221 |
| 英文摘要 | The geological history of Sinai is complicated and differs from the other parts of the Arabian Nubian Shield. Some rocks in Sinai have a signature from the Grenvillian crust, as evidenced in Wadi Seih area. The ultimate objective of this research is to clarify the progression of episodic island arc accretion events from the amalgamation of Rodinia to the assembly of Gondwana supercontinent.Geochemical, mineralogical, U-Pb zircon geochronological, and thermobarometric studies are considered to constrain the nature and tectonic evolution of Wadi Seih gneisses. The protoliths of the orthogneisses are tonalite, trondhjemite, granodiorite, and granite, which were derived from metaluminous-calc-alkaline magma and formed during island-arc accretion. The paragneisses originated from immature Fe-sand and arkose that were deposited in active continental margin and back-arc basin. The orthogneisses and orthopyroxene-free paragneisses were metamorphosed under amphibolite to low granulite-facies conditions with temperatures from 530 to 775 degrees C at pressures of 3-7 kb, while the orthopyroxene-bearing paragneisses were metamorphosed under granulite-facies at a temperature of 870 degrees C and pressures of 5-7 kb. Zircon U-Pb geochronological data of the orthogneisses yields three distinct ages (i.e., the oldest ages are 994 +/- 6 Ma and 976.6 +/- 6.2 Ma, the second age is 740 +/- 6.4 Ma, and the third age is 619.4 +/- 4.2). Similar ages are obtained from detrital zircons in paragneisses: 1039 +/- 57 Ma, 643 +/- 49 Ma, 628 +/- 3.7 Ma, and 627 +/- 6.6 Ma. These new U-Pb data delineate three episodic Mesoproterozoic to Neoproterozoic island arc events at 1050-900 Ma, 850-700 Ma, and 650-580 Ma. The oldest 1050-900 Ma arcs potentially formed during the Rodinia supercontinent-arc collision, while the 850-700 Ma arcs may have formed during the closure of the Mozambique Ocean. The youngest 650-580 Ma arcs could reflect the Gondwana assembly. The age of metamorphism in this study is constrained by the low Th/U ratio of a zircon grain at 633 +/- 10 Ma, which is consistent with other previous studies in other areas in Sinai. |
| WOS关键词 | ARABIAN-NUBIAN SHIELD ; ZIRCON U-PB ; METAMORPHIC CORE COMPLEX ; CENTRAL EASTERN DESERT ; TECTONIC EVOLUTION ; CRUSTAL EVOLUTION ; NEOPROTEROZOIC METAPELITES ; EXPERIMENTAL CALIBRATION ; AGE CONSTRAINTS ; AFRICAN OROGEN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001109133300001 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111184]  |
| 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 | Ramadan, Dina H. |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 2.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian, Peoples R China 3.Univ Madeira Colegio Jesuitas, OSEAN Outermost Reg Sustainable Ecosyst Entreprene, P-9000039 Funchal, Madeira Island, Portugal 4.Tanta Univ, Fac Sci, Geol Dept, Tanta, Egypt 5.Nanjing Hongchuang Geol Explorat Technol Serv Co L, Nanjing, Peoples R China 6.UiT Arctic Univ Norway, Fac Biosci Fisheries & Econ, Dept Arctic & Marine Biol, Arctic Sustainabil Lab, N-9037 Tromso, Norway 7.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Abu Anbar, Mohamed,Abu-Alam, Tamer S.,Ghoneim, Mohamed F.,et al. Rodinia to Gondwana evolution record, South Sinai, Egypt: Geological and geochronological constraints[J]. PRECAMBRIAN RESEARCH,2023,398:23. |
| APA | Abu Anbar, Mohamed.,Abu-Alam, Tamer S..,Ghoneim, Mohamed F..,Dong, Yunpeng.,Li, Xian-Hua.,...&Masoud, Ahmed E..(2023).Rodinia to Gondwana evolution record, South Sinai, Egypt: Geological and geochronological constraints.PRECAMBRIAN RESEARCH,398,23. |
| MLA | Abu Anbar, Mohamed,et al."Rodinia to Gondwana evolution record, South Sinai, Egypt: Geological and geochronological constraints".PRECAMBRIAN RESEARCH 398(2023):23. |
入库方式： OAI收割
来源：地质与地球物理研究所
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