Arid
DOI10.1016/j.gr.2010.02.007
Pan-African dextral transpressive duplex and flower structure in the Central Eastern Desert of Egypt
El-Wahed, Mohamed A. Abd; Kamh, Samir Z.
通讯作者El-Wahed, Mohamed A. Abd
来源期刊GONDWANA RESEARCH
ISSN1342-937X
EISSN1878-0571
出版年2010
卷号18期号:2-3页码:315-336
英文摘要

The NE-SW trending Mubarak shear belt in the Central Eastern Desert (CED) of Egypt records the structural features of a transpression regime. Structural interpretation of satellite data and field observations indicates the presence of two episodes of deformation. The less dominant D-1 deformation is related to sinistral movement along NW-SE trending Wadi Abu Dabbab shear zone and formation of F-1 tight to isoclinal non-cylindrical folds and thrust fan as a consequence of transpression. The thrust fan includes ESE- to SE-dipping thrusts in the ophiolitic melange and S- to SSW-dipping thrusts in the northern part of the metagabbro-diorite complex. The transpression-related sinistral shear regime is superimposed by the dominant D-2 dextral transpression along NE-SW trending Wadi El-Umra shear zone. This dextral shearing is characterized by development of NNE- to NE-trending S-2 cleavage, strike-slip duplex, NNE- and NE-trending F-2 folds, and NNW-directed thrusts. These two events represent a single progressive phase associated with sinistral transpressional deformation, which is related to a younger E-W shortening event. E-W directed shortening is due to oblique convergence between East and West Gondwana along the Mozambique belt. Transpressional structures in the NE-SW trending Mubarak-Barramiya shear belt indicate highly oblique convergence leading to wrench-dominated dextral transpression and development of a major flower structure between Wadi Mubarak and Hafafit dome occupying the whole width of the CED. (C) 2010 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.


英文关键词Mubarak shear belt Dextral transpression Thrust fan Strike-slip duplex Central Eastern Desert Egypt
类型Article
语种英语
国家Egypt
收录类别SCI-E
WOS记录号WOS:000280672000004
WOS关键词SHEAR ZONE ; CORE COMPLEX ; SINISTRAL TRANSPRESSION ; STRETCHING LINEATIONS ; FLUID INCLUSION ; SIKKIM HIMALAYA ; FAULT SYSTEM ; SOUTH-INDIA ; STRIKE-SLIP ; KAOKO BELT
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/2XILL650/164423
作者单位Tanta Univ, Fac Sci, Dept Geol, Tanta 31527, Egypt
推荐引用方式
GB/T 7714
El-Wahed, Mohamed A. Abd,Kamh, Samir Z.. Pan-African dextral transpressive duplex and flower structure in the Central Eastern Desert of Egypt[J],2010,18(2-3):315-336.
APA El-Wahed, Mohamed A. Abd,&Kamh, Samir Z..(2010).Pan-African dextral transpressive duplex and flower structure in the Central Eastern Desert of Egypt.GONDWANA RESEARCH,18(2-3),315-336.
MLA El-Wahed, Mohamed A. Abd,et al."Pan-African dextral transpressive duplex and flower structure in the Central Eastern Desert of Egypt".GONDWANA RESEARCH 18.2-3(2010):315-336.
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