干旱区生态环境知识资源中心(Arid): Radioactivity and Geochemistry of Wadi El Reddah Stream Sediments, North Eastern Desert, Egypt

Arid

DOI	10.21608/ajnsa.2019.14126.1224
	Radioactivity and Geochemistry of Wadi El Reddah Stream Sediments, North Eastern Desert, Egypt
	Ebyan, O. A.; Khamis, H. A.; Ali, H. H.; Abed, N. S.
通讯作者	Ebyan, OA
来源期刊	ARAB JOURNAL OF NUCLEAR SCIENCES AND APPLICATIONS
ISSN	1110-0451
出版年	2020
卷号	53 期号:1 页码:76-87
英文摘要	Wadi El Reddah is a semi closed basin as it has only one outlet at its northern tip while the other parts of the wadi collect flood from the internal tributaries along granites and other rock types. U-238 activity concentrations range between 101.24 and 347.96 with an average 214.63 Bq Kg(-1), U-234 between 89.67 and 308.19 Bq Kg(-1) with an average of 190.10 Bq Kg(-1). Th-232 activity concentrations vary between 96.42 and 463.71 Bq Kg(-1) with 240.46 Bq Kg(-1) as an average. K-40 activity ranges between 1092.71 and 1227.25 Bq Kg(-1) with an average of 1153.82 Bq Kg(-1). U-235 activity concentration ranges between 4.66 and 17.38 Bq Kg(-1) with average of 10.19 Bq Kg(-1). Most of stream sediment samples exhibit an increase in SiO2, Fe2O3t, Na2O, P2O5 and K2O and L.O.I, in addition to a prominent decrease in Al2O3, TiO2, MnO, MgO, CaO. However, trace elements in the studied samples show enrichment in Ni, Cu, Pb, Zn, Cd, Ta, Nb, Zr, Y, Rb, Cs, Ga, Hf, Sn, Th, Tl, U, W, Mo, Bi, As, Be, Li, Sb and Au whereas they are depleted in Co, Sr, V, Ag, Cr and Sc. Zr, Hf and Y are relatively immobile and essentially concentrated in the accessory minerals (zircon and its alteration product branirite, xenotime, thorite and uranothorite). Their REE patterns are well characterized by the M- and W-type tetrad effects. The M- type tetrad effect could be inherited from the surrounding granitic rocks whereas the positive Y anomalies intimately associating with the W-type tetrad effect of REE mainly occur in natural aquatic solutions including seawaters and in some hydrogenous deposits. The presence of the two complementary tetrads may indicate the presence of gold mineralization.
英文关键词	Radioactivity Geochemistry Stream Sediments Wadi El Reddah Egypt
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	ESCI
WOS记录号	WOS:000508233400008
WOS关键词	PATTERNS
WOS类目	Nuclear Science & Technology
WOS研究方向	Nuclear Science & Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334203
作者单位	[Ebyan, O. A.; Khamis, H. A.; Ali, H. H.; Abed, N. S.] Nucl Mat Author NMA, Cairo, Egypt
推荐引用方式 GB/T 7714	Ebyan, O. A.,Khamis, H. A.,Ali, H. H.,et al. Radioactivity and Geochemistry of Wadi El Reddah Stream Sediments, North Eastern Desert, Egypt[J],2020,53(1):76-87.
APA	Ebyan, O. A.,Khamis, H. A.,Ali, H. H.,&Abed, N. S..(2020).Radioactivity and Geochemistry of Wadi El Reddah Stream Sediments, North Eastern Desert, Egypt.ARAB JOURNAL OF NUCLEAR SCIENCES AND APPLICATIONS,53(1),76-87.
MLA	Ebyan, O. A.,et al."Radioactivity and Geochemistry of Wadi El Reddah Stream Sediments, North Eastern Desert, Egypt".ARAB JOURNAL OF NUCLEAR SCIENCES AND APPLICATIONS 53.1(2020):76-87.