干旱区生态环境知识资源中心(Arid): Petrogenesis and geodynamic evolution of Neoproterozoic Abu Dabbab Albite Granite, Central Eastern Desert of Egypt: Petrological and geochemical constraints

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DOI	10.1016/j.jafrearsci.2019.103518
	Petrogenesis and geodynamic evolution of Neoproterozoic Abu Dabbab Albite Granite, Central Eastern Desert of Egypt: Petrological and geochemical constraints
	Heikal, Mohamed Th. S.1; Khedr, Mohamed Z.2; Abd El Monsef, Mohamed 1; Gomaa, Saleh R.3
通讯作者	Heikal, Mohamed Th. S.
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2019
卷号	158
英文摘要	Gebel Abu Dabbab, which is located at 50 km NW of Marsa Alam city, represents an unique and specialized stock-like felsic intrusion of rare metals and Sn bearing albite granite. This granitic stock was emplaced along two intersected major faults and/or tensional shear zones trending NE and NW-SE relevant to the Najd Fault system. Petrographically, the albite granite is composed mainly of albite, quartz and microcline-microperthite and muscovite, in association with accessories; cassiterite, tantalite-columbite, zircon, allanite and apatite. The studied albite granite is enriched in Na2O, HFSEs, Ta and Nb, but it is poor in MgO, CaO, Fe2O3, TiO2, Ba, Sr, rare earth elements and radioelements (U, Th). Geodynamic modelling reveals that Abu Dabbab albite granite was generated as a result of partial melting of oceanic crust due to the interaction of primitive basaltic melts-derived from the mantle source. The resultant hybride melts were subsequently fractionated to tonalitic melts giving rise to the Al-subtype granite, which was emplaced within the intraplate environment at the later phase of the Pan African Orogeny. Moreover, the fractional crystallization and reworking of plagioclase were suffered from alkali mtasomatism after extraction of alkali feldspar granite melts.
英文关键词	Abu Dabbab Albite granite Eastern Desert Geochemical characteristics Alkali metasomatism Geodynamic evolution
类型	Article
语种	英语
国家	Egypt
收录类别	SCI-E
WOS记录号	WOS:000483456700003
WOS关键词	A-TYPE GRANITES ; RARE-METAL-BEARING ; ARABIAN-NUBIAN SHIELD ; CHEMICAL EVOLUTION ; PLUTONIC ROCKS ; AFRICAN OROGEN ; MIDYAN REGION ; SAUDI-ARABIA ; MINERALIZATION ; ORIGIN
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216627
作者单位	1.Tanta Univ, Dept Geol, Fac Sci, Tanta, Egypt; 2.Kafrelsheikh Univ, Dept Geol, Fac Sci, Kafr Al Sheikh, Egypt; 3.Seno Tharwa Drilling Co, Cairo, Egypt
推荐引用方式 GB/T 7714	Heikal, Mohamed Th. S.,Khedr, Mohamed Z.,Abd El Monsef, Mohamed,et al. Petrogenesis and geodynamic evolution of Neoproterozoic Abu Dabbab Albite Granite, Central Eastern Desert of Egypt: Petrological and geochemical constraints[J],2019,158.
APA	Heikal, Mohamed Th. S.,Khedr, Mohamed Z.,Abd El Monsef, Mohamed,&Gomaa, Saleh R..(2019).Petrogenesis and geodynamic evolution of Neoproterozoic Abu Dabbab Albite Granite, Central Eastern Desert of Egypt: Petrological and geochemical constraints.JOURNAL OF AFRICAN EARTH SCIENCES,158.
MLA	Heikal, Mohamed Th. S.,et al."Petrogenesis and geodynamic evolution of Neoproterozoic Abu Dabbab Albite Granite, Central Eastern Desert of Egypt: Petrological and geochemical constraints".JOURNAL OF AFRICAN EARTH SCIENCES 158(2019).