干旱区生态环境知识资源中心(Arid): The major tectonic boundaries of the Northern Red Sea rift, Egypt derived from geophysical data analysis

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DOI	10.1515/congeo-2017-0010
	The major tectonic boundaries of the Northern Red Sea rift, Egypt derived from geophysical data analysis
	Saleh, Salah; Pamukcu, Oya; Brimich, Ladislav
通讯作者	Saleh, S
来源期刊	CONTRIBUTIONS TO GEOPHYSICS AND GEODESY
ISSN	1338-0540
出版年	2017
卷号	47 期号:3 页码:149-199
英文摘要	In the present study, we have attempted to map the plate boundary between Arabia and Africa at the Northern Red Sea rift region including the Suez rift, Gulf of Aqaba-Dead Sea transform and southeastern Mediterranean region by using gravity data analysis. In the boundary analysis method which was used; low-pass filtered gravity anomalies of the Northern Red Sea rift region were computed. Different crustal types and thicknesses, sediment thicknesses and different heat flow anomalies were evaluated. According to the results, there are six subzones (crustal blocks) separated from each other by tectonic plate boundaries and/or lineaments. It seems that these tectonic boundaries reveal complex structural lineaments, which are mostly influenced by a predominant set of NNW-SSE to NW-SE trending lineaments bordering the Red Sea and Suez rift regions. On the other side, the E-W and N-S to NNE-SSW trended lineaments bordering the South-eastern Mediterranean, Northern Sinai and Aqaba-Dead Sea transform regions, respectively. The analysis of the low pass filtered Bouguer anomaly maps reveals that the positive regional anomaly over both the Red Sea rift and South-eastern Mediterranean basin subzones are considered to be caused by the high density of the oceanic crust and/or the anomalous upper mantle structures beneath these regions whereas, the broad medium anomalies along the western half of Central Sinai with the Suez rift and the Eastern Desert subzones are attributed to low-density sediments of the Suez rift and/or the thick upper continental crustal thickness below these zones. There are observable negative anomalies over the Northern Arabia subzone, particularly in the areas covered by Cenozoic volcanics. These negative anomalies may be attributed to both the low densities of the surface volcanics and/or to a very thick upper continental crust. On the contrary, the negative anomaly which belongs to the Gulf of Aqaba-Dead Sea transform zone is due to crustal thickening (with limited heat flow values) below this region. Additionally in this study, the crustal thinning was investigated with heat flow, magnetic and free air gravity anomalies in the Northern Red Sea rift region. In fact, the crustal thinning of the study area was also proportional to the regions of observable high heat flow values. Finally, our results were found to be well correlated with the topography, free air, aeromagnetic and heat flow dataset profiles crossing most of the study area.
英文关键词	Red Sea rift potential field low pass filtering boundary analysis crustal structure
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000425656800001
WOS关键词	CONTINENTAL-MARGIN ; EAST-AFRICA ; HEAT-FLOW ; GRAVITY-ANOMALIES ; CRUSTAL THICKNESS ; PLATE KINEMATICS ; FAULT SYSTEM ; ELAT AQABA ; GULF ; EVOLUTION
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/332553
作者单位	[Saleh, Salah] NRIAG, Cairo 11421, Egypt; [Pamukcu, Oya] Dokuz Eylul Univ, Fac Engn, Dept Geophys, TR-35160 Izmir, Turkey; [Brimich, Ladislav] Slovak Acad Sci, Inst Earth Sci, Dubravska Cesta 9, Bratislava 84005, Slovakia
推荐引用方式 GB/T 7714	Saleh, Salah,Pamukcu, Oya,Brimich, Ladislav. The major tectonic boundaries of the Northern Red Sea rift, Egypt derived from geophysical data analysis[J],2017,47(3):149-199.
APA	Saleh, Salah,Pamukcu, Oya,&Brimich, Ladislav.(2017).The major tectonic boundaries of the Northern Red Sea rift, Egypt derived from geophysical data analysis.CONTRIBUTIONS TO GEOPHYSICS AND GEODESY,47(3),149-199.
MLA	Saleh, Salah,et al."The major tectonic boundaries of the Northern Red Sea rift, Egypt derived from geophysical data analysis".CONTRIBUTIONS TO GEOPHYSICS AND GEODESY 47.3(2017):149-199.