Document Details

Document Type : Article In Journal 
Document Title :
Polyphase Folding in Nugrus-Sikeit Area South Eastern Desert, Egypt
تعدد الطي بمنطقة نجرس - سيكيت - جنوب الصحراء الشرقية - مصر
 
Subject : Earth Sciences 
Document Language : English 
Abstract : lithological constitution of Nugrus-Sikeit area comprises a sequence of dismembered ophiolites, tectonic mélange association and arc assemblage. These older rocks are intensively deformed and intruded by intracratonic association, which within the mapped area, is represented by gabbros and the associated hornblendite together with younger granites. Planar and linear mesoscopic structures exhibited by the rocks of Nugrus-Sikeit area indicate that these rocks are involved in superimposed folding events and at least three fold generations (F1, F2 & F3) can be recognized. The F1 folds resulted in isoclined folding of S0, and other primary structures around WNW-ESE axes. This phase represents the main folding that affected the area. Besides establishing the WNW-ESE pattern of rock units, it was also responsible for the transposition of S0 into penetrative surfaces S1 accompanying low to medium grade regional metamorphism. The F2 folds refolded the F1 folds into upright to overturned and even recumbent folds about NW-SE axes together with the crenulation of S1 surfaces producing crenulation cleavage S2? The F3 folds are of mild intensity compared to the F1 and F2 generations. It neither appeared to disturb the orientation of the earlier structures nor accompanied by strong transposition foliation. Associated folds are of the mesodimension and maintain a fairly constant NNE-SSW trend. 
ISSN : 1012-8832 
Journal Name : Earth Sciences Journal 
Volume : 12 
Issue Number : 1 
Publishing Year : 1421 AH
2000 AD 
Number Of Pages : 15 
Article Type : Article 
Added Date : Sunday, October 11, 2009 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
حسن سمير عسافH. S. ASSAFResearcher  
محمد الأحمدي إبراهيم M. E. IBRAHIMResearcher  
عبدالقادر زلطة A. A. ZALATAResearcher  
احمد عبداللطيف المتولي A. A. METWALLYResearcher  
جهاد محمد صالحG. M. SALEH Researcher  

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