干旱区生态环境知识资源中心(Arid): Recent uranium mobilization of late neoproterozoic El Sela sheared granites, South Eastern Desert, Egypt

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DOI	10.1007/s10967-021-07665-4
	Recent uranium mobilization of late neoproterozoic El Sela sheared granites, South Eastern Desert, Egypt
	El Mezayen, Ahmed M.; Shahin, Hassan A.; Kawady, Nilly A.
通讯作者	Kawady, NA (corresponding author), Nucl Mat Author, Geochem Explorat Dept, Cairo, Egypt.
来源期刊	JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
ISSN	0236-5731
EISSN	1588-2780
出版年	2021
卷号	328 期号:2 页码:539-550
英文摘要	The sheared granite of El Sela represents one of the most promising uranium mineralization in the southern part of the eastern desert, in Egypt. The present work concerned in detailed with El Sela shear zone through ENE-WSW and NNW-SSE trends as a perfect way for ascending hydrothermal solutions and meteoric water that led to leaching of uranium from its bearing minerals and redeposit them in the altered granites. Activities of radionuclides were identified for U-238, U-235, U-234, Th-230, Th-232, Ra-226, Bi-214, Pb-214, Pb-210, and K-40 in the studied samples by hyper-pure germanium detector. Furthermore, activity ratios U-234/U-238, Th-230/U-238, Th-230/U-234, Ra-226/U-238, Ra-226/Th-230, U-238/U-235, and U-234/U-235 were calculated. Additionally, the U-238/U-235 activity ratios range were evaluated from 20.99 to 22.4 with an average of 21.69 indicating a slight deviation from the natural ratio (21.7). The U-234/U-235 activity ratios range recorded from 4.866 to 121.39 with a reported average of 63.13 uranium migration (out / in). Finally, the age of uranium mobilization in the studied samples was calculated from 18.83 to 43.25 kyr. suggested a recent uranium mineralization.
英文关键词	Recent uranium Activity ratios Alteration processes Uranium dating
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000630851600001
WOS类目	Chemistry, Analytical ; Chemistry, Inorganic & Nuclear ; Nuclear Science & Technology
WOS研究方向	Chemistry ; Nuclear Science & Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350982
作者单位	[El Mezayen, Ahmed M.] Al Azhar Univ, Fac Sci, Geol Dept, PO 11884, Cairo, Egypt; [Shahin, Hassan A.] Nucl Mat Author, Geol Studies Dept, Cairo, Egypt; [Kawady, Nilly A.] Nucl Mat Author, Geochem Explorat Dept, Cairo, Egypt
推荐引用方式 GB/T 7714	El Mezayen, Ahmed M.,Shahin, Hassan A.,Kawady, Nilly A.. Recent uranium mobilization of late neoproterozoic El Sela sheared granites, South Eastern Desert, Egypt[J],2021,328(2):539-550.
APA	El Mezayen, Ahmed M.,Shahin, Hassan A.,&Kawady, Nilly A..(2021).Recent uranium mobilization of late neoproterozoic El Sela sheared granites, South Eastern Desert, Egypt.JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY,328(2),539-550.
MLA	El Mezayen, Ahmed M.,et al."Recent uranium mobilization of late neoproterozoic El Sela sheared granites, South Eastern Desert, Egypt".JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 328.2(2021):539-550.