干旱区生态环境知识资源中心(Arid): U-Pb geochronology, REE and trace element geochemistry of zircon from El Fereyid monzogranite, south Eastern Desert, Egypt

Arid

DOI	10.2465/jmps.210320
	U-Pb geochronology, REE and trace element geochemistry of zircon from El Fereyid monzogranite, south Eastern Desert, Egypt
	Skublov, Sergey G.; Gawad, Ahmed E. Abdel; Levashova, Ekaterina, V; Ghoneim, Mohamed M.
通讯作者	Skublov, SG (corresponding author)，Russian Acad Sci, Inst Precambrian Geol & Geochronol, Nab Makarova 2, St Petersburg 199034, Russia. ; Skublov, SG (corresponding author)，St Petersburg Min Univ, 21 Ya Liniya 2, St Petersburg 199106, Russia.
来源期刊	JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES
ISSN	1345-6296
EISSN	1349-3825
出版年	2021
卷号	116 期号:4
英文摘要	The monzogranite of El Fereyid is one of the rare metal-rich granites, where zircon is one of the ore minerals. Thus, studying zircon here is of vital importance. Most of the studied zircon grains are metamict and thus the loss of radiogenic Pb is detected for them. Nevertheless, our study allowed us to obtain the U-Pb (SHRIMP-II) age of magmatic crystallization for the El Fereyid monzogranite: 626 +/- 13 Ma. These data allowed the correction of earlier determined age (K-Ar system in biotite) for the El Fereyid massif. Zircon grains of El Fereyid monzogranite demonstrate heterogeneous structure in CL images, they are rich in rare earth elements (REE, concentration 3000-22500 ppm), trace elements (U: 2000-14800 ppm, Th: 300-2500 ppm), and has low Th/U ratios (average 0.18). Most zircon grains exhibit multiple internal oscillatory zoning in CL images, indicating a typical magmatic origin. The core of zircon grain has a dark tone on CL imaging and magmatic-type REE spectra. Zircon cores are enriched in REEs, U, Th, and Y, thus recording that the magma was rich in incompatible elements. Light CL rims of zircon grains are depleted, relative to the cores in most of the trace elements, except for P, Ca, and Ti. REE spectra in rims show similar patterns that are more often demonstrated by hydrothermal zircon grains. This explains their crystallization in the late-magmatic stage when magma was rich in fluids but depleted in most of the trace elements.
英文关键词	El Fereyid monzogranite Zircon U-Pb method Magmatic zircon Hydrothermal zircon Trace elements Rare-earth elements
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000746168500005
WOS关键词	RARE-METAL GRANITOIDS ; ALLAQI-HEIANI-SUTURE ; A-TYPE GRANITES ; CRUSTAL EVOLUTION ; SHEAR ZONES ; CONSTRAINTS ; MINERALOGY ; CHEMISTRY ; TA ; PEGMATITES
WOS类目	Mineralogy
WOS研究方向	Mineralogy
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/375937
作者单位	[Skublov, Sergey G.; Levashova, Ekaterina, V] Russian Acad Sci, Inst Precambrian Geol & Geochronol, Nab Makarova 2, St Petersburg 199034, Russia; [Skublov, Sergey G.] St Petersburg Min Univ, 21 Ya Liniya 2, St Petersburg 199106, Russia; [Gawad, Ahmed E. Abdel; Ghoneim, Mohamed M.] Nucl Mat Author, POB 530, Cairo, Egypt; [Ghoneim, Mohamed M.] Southern Fed Univ, Inst Earth Sci, Zorge St 40, Rostov Na Donu 344090, Russia
推荐引用方式 GB/T 7714	Skublov, Sergey G.,Gawad, Ahmed E. Abdel,Levashova, Ekaterina, V,et al. U-Pb geochronology, REE and trace element geochemistry of zircon from El Fereyid monzogranite, south Eastern Desert, Egypt[J],2021,116(4).
APA	Skublov, Sergey G.,Gawad, Ahmed E. Abdel,Levashova, Ekaterina, V,&Ghoneim, Mohamed M..(2021).U-Pb geochronology, REE and trace element geochemistry of zircon from El Fereyid monzogranite, south Eastern Desert, Egypt.JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES,116(4).
MLA	Skublov, Sergey G.,et al."U-Pb geochronology, REE and trace element geochemistry of zircon from El Fereyid monzogranite, south Eastern Desert, Egypt".JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 116.4(2021).