干旱区生态环境知识资源中心(Arid): The largest plagiogranite on Earth formed by re-melting of juvenile proto-continental crust

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DOI	10.1038/s43247-021-00205-8
	The largest plagiogranite on Earth formed by re-melting of juvenile proto-continental crust
	El Dien, Hamed Gamal; Li, Zheng-Xiang; Abu Anbar, Mohamed; Doucet, Luc S.; Murphy, J. Brendan; Evans, Noreen J.; Xia, Xiao-Ping; Li, Jiangyu
通讯作者	El Dien, HG ; Li, ZX (corresponding author), Curtin Univ, Sch Earth & Planetary Sci, Inst Geosci Res TIGeR, Earth Dynam Res Grp, Perth, WA, Australia. ; El Dien, HG (corresponding author), Tanta Univ, Fac Sci, Geol Dept, Tanta, Egypt.
来源期刊	COMMUNICATIONS EARTH & ENVIRONMENT
EISSN	2662-4435
出版年	2021
卷号	2 期号:1
英文摘要	The growth of continental crust through melt extraction from the mantle is a critical component of the chemical evolution of the Earth and the development of plate tectonics. However, the mechanisms involved remain debated. Here, we conduct petrological and geochemical analyses on a large (up to 5000km(2)) granitoid body in the Arabian-Nubian shield near El-Shadli, Egypt. We identify these rocks as the largest known plagiogranitic complex on Earth, which shares characteristics such as low potassium, high sodium and flat rare earth element chondrite-normalized patterns with spatially associated gabbroic rocks. The hafnium isotopic compositions of zircon indicate a juvenile source for the magma. However, low zircon delta O-18 values suggest interaction with hydrothermal fluids. We propose that the El-Shadli plagiogranites were produced by extensive partial melting of juvenile, previously accreted oceanic crust and that this previously overlooked mechanism for the formation of plagiogranite is also responsible for the transformation of juvenile crust into a chemically stratified continental crust. The largest known plagiogranite on Earth, identified in the Arabian-Nubian shield, Egypt, formed through extensive partial melting of the previously accreted juvenile proto-continental crust, according to petrological and geochemical analyses.
类型	Article
语种	英语
开放获取类型	gold
收录类别	ESCI
WOS记录号	WOS:000672136400001
WOS关键词	ARABIAN-NUBIAN SHIELD ; SOUTH EASTERN DESERT ; U-PB ; OXYGEN-ISOTOPE ; OCEANIC PLAGIOGRANITES ; WORKING REFERENCE ; AFRICAN OROGEN ; MANTLE PLUME ; BREAK-UP ; ZIRCON
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352768
作者单位	[El Dien, Hamed Gamal; Li, Zheng-Xiang; Doucet, Luc S.; Murphy, J. Brendan; Li, Jiangyu] Curtin Univ, Sch Earth & Planetary Sci, Inst Geosci Res TIGeR, Earth Dynam Res Grp, Perth, WA, Australia; [El Dien, Hamed Gamal; Abu Anbar, Mohamed] Tanta Univ, Fac Sci, Geol Dept, Tanta, Egypt; [Murphy, J. Brendan] St Francis Xavier Univ, Dept Earth Sci, Antigonish, NS, Canada; [Evans, Noreen J.] Curtin Univ, John Laeter Ctr, Sch Earth & Planetary Sci, Perth, WA, Australia; [Xia, Xiao-Ping] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Peoples R China
推荐引用方式 GB/T 7714	El Dien, Hamed Gamal,Li, Zheng-Xiang,Abu Anbar, Mohamed,et al. The largest plagiogranite on Earth formed by re-melting of juvenile proto-continental crust[J],2021,2(1).
APA	El Dien, Hamed Gamal.,Li, Zheng-Xiang.,Abu Anbar, Mohamed.,Doucet, Luc S..,Murphy, J. Brendan.,...&Li, Jiangyu.(2021).The largest plagiogranite on Earth formed by re-melting of juvenile proto-continental crust.COMMUNICATIONS EARTH & ENVIRONMENT,2(1).
MLA	El Dien, Hamed Gamal,et al."The largest plagiogranite on Earth formed by re-melting of juvenile proto-continental crust".COMMUNICATIONS EARTH & ENVIRONMENT 2.1(2021).