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The evolution of the Arabian-Nubian Shield and survival of its zircon U-Pb-Hf-O isotopic signature: A tale from the Urn Had Conglomerate, central Eastern Desert, Egypt

文献类型：期刊论文

作者Abd El-Rahman, Yasser1,2; Abu Anbar, Mohamed3; Li, Xian-Hua1,4; Li, Jiao1; Ling, Xiao-Xiao1; Wu, Li-Guang1,4; Masoud, Ahmed E.3
刊名PRECAMBRIAN RESEARCH
出版日期2019
卷号320页码:46-62
关键词Zircon Hf-O isotope U-Pb age Provenance Arabian-Nubian Shield Nile sediments
ISSN号0301-9268
DOI10.1016/j.precamres.2018.10.011
英文摘要In this study, we present in situ U-Pb, Hf and O isotopic analyses of detrital zircon grains from the Urn Had Conglomerate from the Wadi Hammamat area in the central Eastern Desert of Egypt. The youngest detrital age population is 625 Ma, which gives an estimate to the maximum depositional age of the Urn Had Conglomerate. Based on their Hf isotopic signature and U-Pb ages, detrital zircons fall into two distinct groups: a 625-680 Ma group and a 720-840 Ma group, with minor early Tonian-Stenian and Paleoproterozoic-Archean populations. These groups are consistent with derivation from local sources in the central Eastern Desert of Egypt. The 720-840 Ma group is characterized by exclusively positive epsilon(Hf(t)) values and it reflects the main juvenile Tonian intra-oceanic island arc stage characterizing the formation of the Arabian-Nubian Shield. On the contrary, epsilon(Hf(t)) values of the 625-680 Ma zircon group range between 17.5 and +12.8, which indicates involvement of Archean-Paleoproterozoic crust during the Cryogenian-Ediacaran magmatism associated with the accretion and assembly of the arc materials. The transition from juvenile intra-oceanic island arc stage to mixed juvenile magma and older crustal materials during the arc assembly stage in the central Eastern Desert is supported by the increase in delta O-18 values of detrital zircons from dominant mantle-like values in the Tonian to higher values in the Cryogenian-Ediacaran group. A wide variation in the epsilon(Hf(t)) values (-25.8 to +10) is recorded also in the early Tonian-Stenian population, which results in the double plunge U-Pb-Hf patterns of the detrital zircons. This pattern is similar to the Nile sediments and to the Paleozoic and Mesozoic Nubian sandstone, which may indicate substantial recycling of ANS crustal material by these sediments and survival of its original zircon U-Pb-Hf-O signature despite repeated recycling episodes.
WOS关键词PRECAMBRIAN HAMMAMAT GROUP ; PAN-AFRICAN CRUST ; DETRITAL-ZIRCON ; LU-HF ; NEOPROTEROZOIC EVOLUTION ; METAMORPHIC COMPLEX ; TECTONIC EVOLUTION ; CONTINENTAL-CRUST ; AGE CONSTRAINTS ; SINGLE ZIRCONS
资助项目PIFI ; Chinese Academy of Sciences[XDB18030300] ; Chinese Academy of Sciences[QYZDY-SSW-DQC017]
WOS研究方向Geology
语种英语
WOS记录号WOS:000456899600004
出版者ELSEVIER SCIENCE BV
资助机构PIFI ; PIFI ; PIFI ; PIFI ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; PIFI ; PIFI ; PIFI ; PIFI ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; PIFI ; PIFI ; PIFI ; PIFI ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; PIFI ; PIFI ; PIFI ; PIFI ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/90543]  
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Abd El-Rahman, Yasser; Li, Xian-Hua
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Cairo Univ, Fac Sci, Geol Dept, Giza 12613, Egypt
3.Tanta Univ, Fac Sci, Geol Dept, Tanta 31527, Egypt
4.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Abd El-Rahman, Yasser,Abu Anbar, Mohamed,Li, Xian-Hua,et al. The evolution of the Arabian-Nubian Shield and survival of its zircon U-Pb-Hf-O isotopic signature: A tale from the Urn Had Conglomerate, central Eastern Desert, Egypt[J]. PRECAMBRIAN RESEARCH,2019,320:46-62.
APA Abd El-Rahman, Yasser.,Abu Anbar, Mohamed.,Li, Xian-Hua.,Li, Jiao.,Ling, Xiao-Xiao.,...&Masoud, Ahmed E..(2019).The evolution of the Arabian-Nubian Shield and survival of its zircon U-Pb-Hf-O isotopic signature: A tale from the Urn Had Conglomerate, central Eastern Desert, Egypt.PRECAMBRIAN RESEARCH,320,46-62.
MLA Abd El-Rahman, Yasser,et al."The evolution of the Arabian-Nubian Shield and survival of its zircon U-Pb-Hf-O isotopic signature: A tale from the Urn Had Conglomerate, central Eastern Desert, Egypt".PRECAMBRIAN RESEARCH 320(2019):46-62.

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来源：地质与地球物理研究所

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