干旱区生态环境知识资源中心(Arid): Unpaired ophiolite belts in the Neoproterozoic Allaqi-Heiani Suture, the Arabian-Nubian Shield: Evidences from magnetic data

Arid

DOI	10.1016/j.jafrearsci.2019.05.002
	Unpaired ophiolite belts in the Neoproterozoic Allaqi-Heiani Suture, the Arabian-Nubian Shield: Evidences from magnetic data
	Sehsah, Haytham 1; Eldosouky, Ahmed M.2,3; El Afandy, Adel H.4
通讯作者	Sehsah, Haytham
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2019
卷号	156 页码:26-34
英文摘要	Under oblique convergence, the intraoceanic subduction zones tend to have a tectonically-escaped accretionary prism, incorporates exotic materials from different sources and oceanic crust fragments. The western part of the Allaqi-Heiani suture (AHS) is the type locality for a significant accretionary prism extends for similar to 200 km; this prism is mainly metavolcanic, and metasedimentary rocks have interwoven serpentinite, marble blocks and intruded with different phases of plutonism. Geologic studies of the western part of the AHS have suggested the allochthonous origin for this complex, and terrane accretion happened earlier than similar to 700 Ma and subsequently thrusted over Gabgaba terrane to the south. Magnetic data was applied to follow the deep-seated structures and the connectivity between ophiolite belts in the AHS. Magnetic data unravelled the presence of a deep-seated strike-slip faults aligned along N-S and NNE trends underneath the northern belt, and this fault zone was erased at the surface by a major zone of the post-accretionary left-lateral strike-slip faults. In the southern part, E-W and WNW-ESE faults are dominant at the edge of the autochthon Gabgaba terrane. At greater depths, thrusts related to the emplacement of the northern belt disappeared, while those to the south aligned with the suture zone becomes significant. In conclusion, there are two ophiolite belts are located in the western part of the AHS; the southern belt is extended along the edge of the Gabgaba terrane to the south and the Eastern Desert (ED) to the north. This south belt is the western extension of a major arc-arc suture zone that extends to the east into the Arabian shield. The northern ophiolite belt was emplaced onto the southern part of the ED similar to 70 km away from the arc-arc to the south.
英文关键词	Accretionary orogen Arabian-Nubian shield Unpaired ophiolite belts Allaqi-Heiani suture RTP Tilt derivative
类型	Article
语种	英语
国家	Egypt
收录类别	SCI-E
WOS记录号	WOS:000472695900003
WOS关键词	SOUTH-EASTERN-DESERT ; METAMORPHIC CORE COMPLEX ; CONTINENTAL-CRUST ; AGE CONSTRAINTS ; AFRICAN OROGEN ; SHEAR-ZONE ; EGYPT ; EVOLUTION ; ARC ; TECTONICS
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/2XILL650/216623
作者单位	1.Damietta Univ, Geol Dept, Fac Sci, Dumyat 34517, Egypt; 2.Suez Univ, Geol Dept, Fac Sci, Suez 43518, Egypt; 3.EEAA, Cairo, Egypt; 4.Nucl Mat Author, POB 530, Cairo, Egypt
推荐引用方式 GB/T 7714	Sehsah, Haytham,Eldosouky, Ahmed M.,El Afandy, Adel H.. Unpaired ophiolite belts in the Neoproterozoic Allaqi-Heiani Suture, the Arabian-Nubian Shield: Evidences from magnetic data[J],2019,156:26-34.
APA	Sehsah, Haytham,Eldosouky, Ahmed M.,&El Afandy, Adel H..(2019).Unpaired ophiolite belts in the Neoproterozoic Allaqi-Heiani Suture, the Arabian-Nubian Shield: Evidences from magnetic data.JOURNAL OF AFRICAN EARTH SCIENCES,156,26-34.
MLA	Sehsah, Haytham,et al."Unpaired ophiolite belts in the Neoproterozoic Allaqi-Heiani Suture, the Arabian-Nubian Shield: Evidences from magnetic data".JOURNAL OF AFRICAN EARTH SCIENCES 156(2019):26-34.