干旱区生态环境知识资源中心(Arid): Paleomagnetism as a geochronological gauge for deformational events: Insights from the Najd-related Nugrus Shear Zone, Northern Nubian Shield

Arid

DOI	10.1016/j.jseaes.2021.104988
	Paleomagnetism as a geochronological gauge for deformational events: Insights from the Najd-related Nugrus Shear Zone, Northern Nubian Shield
	Mostafa, Reem; Hagag, Wael; Hamimi, Zakaria; Fowler, Abdel-Rahman; El-Hemaly, Ibrahim
通讯作者	Hagag, W (corresponding author), Benha Univ, Fac Sci, Geol Dept, Banha 13518, Egypt.
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
ISSN	1367-9120
EISSN	1878-5786
出版年	2022
卷号	223
英文摘要	The Nugrus Shear Zone (NSZ) of southern central Egypt is a major ductile shear structure with controversial origins. It lies east of the Hafafit Gneissic Complex (HGC) and separates the Central and South Eastern Desert terranes of Egypt. The NSZ has been correlated with the Najd Fault system in Saudi Arabia, and shares orientation and kinematic characteristics with the Najd fault. Previous microstructural studies of the NSZ and HGC have concluded a polydeformation history for the Nugrus area, involving early NW-ward thrusting, followed by NW-SE transcurrent shearing. This contribution reports a combined rock magnetic and palaeomagnetic study of the shear zone and wallrocks that gives a conclusive evidence for the previously mentioned tectonic scenario. Furthermore, the palaeopoles obtained correlate well with the available geochronologically dated poles from Northern Africa, leading to inferred ages for the deformation and thermal events of the area. These ages confirm the previous proposed tectonic models. Three components of Natural Remanant Magnetization (NRM) direction (CA, CB and CD) are identified. Component CA represents the Characteristic Remanent Magnetization (ChRM). Components CB and CD are considered to be secondary magnetization. CA is consistent with arc-related deformation and magmatism at 700-680 Ma. CB and CD represent the protracted Najd-related shear deformation and transpression at 650-550 Ma.
英文关键词	Najd Shear Zones Paleomagnitic Measurements AMS-Technique Nugrus-Hafafit Area Geochronology
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000718295800001
WOS关键词	CENTRAL EASTERN DESERT ; HAFAFIT METAMORPHIC COMPLEX ; AFRICAN OROGEN ; SAUDI-ARABIA ; EGYPT ; CONSTRAINTS ; EVOLUTION ; GONDWANA ; RODINIA ; SYSTEM
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/2XILL650/374444
作者单位	[Mostafa, Reem; El-Hemaly, Ibrahim] Natl Res Inst Astron & Geophys, Cairo 11421, Egypt; [Hagag, Wael; Hamimi, Zakaria] Benha Univ, Fac Sci, Geol Dept, Banha 13518, Egypt; [Fowler, Abdel-Rahman] United Arab Emirates Univ, Fac Sci, Geol Dept, Al Ain, U Arab Emirates
推荐引用方式 GB/T 7714	Mostafa, Reem,Hagag, Wael,Hamimi, Zakaria,et al. Paleomagnetism as a geochronological gauge for deformational events: Insights from the Najd-related Nugrus Shear Zone, Northern Nubian Shield[J],2022,223.
APA	Mostafa, Reem,Hagag, Wael,Hamimi, Zakaria,Fowler, Abdel-Rahman,&El-Hemaly, Ibrahim.(2022).Paleomagnetism as a geochronological gauge for deformational events: Insights from the Najd-related Nugrus Shear Zone, Northern Nubian Shield.JOURNAL OF ASIAN EARTH SCIENCES,223.
MLA	Mostafa, Reem,et al."Paleomagnetism as a geochronological gauge for deformational events: Insights from the Najd-related Nugrus Shear Zone, Northern Nubian Shield".JOURNAL OF ASIAN EARTH SCIENCES 223(2022).