干旱区生态环境知识资源中心(Arid): 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

Arid

DOI	10.1016/j.precamres.2018.10.011
	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
	Abd El-Rahman, Yasser 1,2; Abu Anbar, Mohamed 3; Li, Xian-Hua 1,4; Li, Jiao 1; Ling, Xiao-Xiao 1; Wu, Li-Guang 1,4; Masoud, Ahmed E.3
通讯作者	Abd El-Rahman, Yasser ; Li, Xian-Hua
来源期刊	PRECAMBRIAN RESEARCH
ISSN	0301-9268
EISSN	1872-7433
出版年	2019
卷号	320 页码:46-62
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.
英文关键词	Zircon Hf-O isotope U-Pb age Provenance Arabian-Nubian Shield Nile sediments
类型	Article
语种	英语
国家	Peoples R China ; Egypt
收录类别	SCI-E
WOS记录号	WOS:000456899600004
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
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	中国科学院地质与地球物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218159
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]. 中国科学院地质与地球物理研究所,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.