Age constraints on the formation and emplacement of Neoproterozoic ophiolites along the Allaqi–Heiani Suture, South Eastern Desert of Egypt
作者: K.A. AliM.K. AzerH.A. GahlanS.A. WildeM.D. SamuelR.J. Stern
作者单位: 1Geosciences Department, University of Texas at Dallas, 800 W Campbell Rd., Richardson, TX 75080, USA
2Geology Department, National Research Centre, Dokki-Cairo, Egypt
3Geology Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
4Department of Applied Geology, Curtin University of Technology, Perth, 6845 WA, Australia
刊名: Gondwana Research, 2010, Vol.18 (4), pp.583-595
来源数据库: Elsevier Journal
DOI: 10.1016/j.gr.2010.03.002
关键词: NeoproterozoicOphioliteArabian–Nubian ShieldU–Pb zircon age
原始语种摘要: Abstract(#br)Ophiolites are key components of the Neoproterozoic Arabian–Nubian Shield (ANS). Understanding when they formed and were emplaced is crucial for understanding the evolution of the ANS because their ages tell when seafloor spreading and terrane accretion occurred. The Yanbu–Onib–Sol Hamed–Gerf–Allaqi–Heiani (YOSHGAH) suture and ophiolite belt can be traced ∼600km across the Nubian and Arabian shields. We report five new SHRIMP U–Pb zircon ages from igneous rocks along the Allaqi segment of the YOSHGAH suture in southernmost Egypt and use these data in conjunction with other age constraints to evaluate YOSHGAH suture evolution. Ophiolitic layered gabbro gave a concordia age of 730±6...
全文获取路径: Elsevier  (合作)
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影响因子:7.396 (2012)

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