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	Petrogenesis, Geodynamics and Radioactivity of the Granitic Rocks of the Nugrus Weakness Zone, South Eastern Desert, Egypt
	Abu Elatta Abdallah Mahmoud Soliman; Mansour Gehad M R
来源期刊	Acta Geologica Sinica
ISSN	1000-9515
出版年	2021
卷号	95 期号:4 页码:1183-1198
英文摘要	The studied granitic bodies belong to the south Eastern Desert of Egypt. They extend in a NNW-SSE trend along the same strike of the Nugrus weakness zone by which they are structurally controlled. These rocks are composed of biotite and biotite-muscovite monzogranites to syenogranites. Geochemically, a higher abundance of Ba and Rb in biotite granites with a relatively low abundance in biotite-muscovite granites as well as the diversity of Th, U, Nb, Ta, Zr, and REE reflects their origin from different sources and geodynamic settings. The biotite granites are predominantly metaluminous to low peraluminous whereas the biotite-muscovite granites have a peraluminous nature. Potassium enrichment at the expense of calcium in these rocks reflects a derivation from crustal sources by partial melting in the presence of a volatile system. Radiometric investigation showed high abundances of U (up to 38 ppm) and Th (up to 26 ppm) in biotite-muscovite granites relative to biotite granites (up to 5 ppm U and 18 ppm Th). Radioactive anomalies furthermore have been recorded in parts of biotite-muscovite granites that were affected by the faults (up to 116 ppm eU and 97 ppm eTh). Consequently, biotite-muscovite granites form a potentially fertile source for uranium mineralization.
英文关键词	partial melting biotite-muscovite granites peraluminous geodynamic radioactivity Nugrus
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Geology
CSCD记录号	CSCD:7032110
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377394
作者单位	Abu Elatta Abdallah Mahmoud Soliman, Nuclear Materials Authority, Cairo, Egypt.; Mansour Gehad M R, Nuclear Materials Authority, Cairo, Egypt.
推荐引用方式 GB/T 7714	Abu Elatta Abdallah Mahmoud Soliman,Mansour Gehad M R. Petrogenesis, Geodynamics and Radioactivity of the Granitic Rocks of the Nugrus Weakness Zone, South Eastern Desert, Egypt[J],2021,95(4):1183-1198.
APA	Abu Elatta Abdallah Mahmoud Soliman,&Mansour Gehad M R.(2021).Petrogenesis, Geodynamics and Radioactivity of the Granitic Rocks of the Nugrus Weakness Zone, South Eastern Desert, Egypt.Acta Geologica Sinica,95(4),1183-1198.
MLA	Abu Elatta Abdallah Mahmoud Soliman,et al."Petrogenesis, Geodynamics and Radioactivity of the Granitic Rocks of the Nugrus Weakness Zone, South Eastern Desert, Egypt".Acta Geologica Sinica 95.4(2021):1183-1198.