Thrust system, flower structures and transpressive duplexes in Zeidun-Kareim Belt, Central Tectonic Province, Egyptian Nubian Shield (East African Orogen)
Abstract In this study, we explore thrust system, flower structures and transpressive duplexes in the Zeidun-Kareim belt (ZKB) in the Egyptian Nubian Shield (ENS; northwestern ANS). Filed observations and the measured stretched lineations along thrust planes reveal two main thrusting directions; ESE...
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2024-11-01
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| Online Access: | https://doi.org/10.1038/s41598-024-79864-4 |
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| author | Zakaria Hamimi Magdi Khalil Hoda Ragab Saad Mahmoud N. El-Tawapty Hosam Khamis Ahmed Elbahrawy Ashraf S. Abdelmaksoud |
| author_facet | Zakaria Hamimi Magdi Khalil Hoda Ragab Saad Mahmoud N. El-Tawapty Hosam Khamis Ahmed Elbahrawy Ashraf S. Abdelmaksoud |
| author_sort | Zakaria Hamimi |
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| description | Abstract In this study, we explore thrust system, flower structures and transpressive duplexes in the Zeidun-Kareim belt (ZKB) in the Egyptian Nubian Shield (ENS; northwestern ANS). Filed observations and the measured stretched lineations along thrust planes reveal two main thrusting directions; ESE- (to NE- and NNE-)- and NW- (to WNW-)-directions belonging to two main phases of contraction. The timing of both phases is indirectly constrained. The older ESE- (to NE- and NNE-)-vergent thrusting is attributed to the E-W Gondwana assembly. The younger NW- (to WNW-)-vergent thrusting is akin to the Najd Orogeny. The poles to the in-sequence thrusts lie close to the poles of stretching lineations. The mean orientations of thrust propagation are, respectively, 059° and 309°. Propagation of thrusting along the two main thrusting directions resulted in the formation of a complete geometry of thrust duplex system, imbricate nappe stacking, flower structures and thrust-related folding. The top-to- ESE- (to NE- and NNE-) transpression reflects dextral sense, whereas the top-to- NW- (to WNW-) transpression exhibits sinistral sense, in compatible with those recorded and argued by many authors elsewhere in the ENS and the entire ANS. Our study fully constraints the ZKB spathio-temporal tectonic evolution which involves three main stages. |
| format | Article |
| id | doaj-art-e19508b90adf455cbfb0139efe867784 |
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| issn | 2045-2322 |
| language | English |
| publishDate | 2024-11-01 |
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| spelling | doaj-art-e19508b90adf455cbfb0139efe8677842025-08-20T02:22:20ZengNature PortfolioScientific Reports2045-23222024-11-0114112210.1038/s41598-024-79864-4Thrust system, flower structures and transpressive duplexes in Zeidun-Kareim Belt, Central Tectonic Province, Egyptian Nubian Shield (East African Orogen)Zakaria Hamimi0Magdi Khalil1Hoda Ragab Saad2Mahmoud N. El-Tawapty3Hosam Khamis4Ahmed Elbahrawy5Ashraf S. Abdelmaksoud6Geology Department, Faculty of Science, Benha UniversityGeology Department, Faculty of Science, Damietta UniversityGeology Department, Faculty of Science, Damietta UniversityGeology Department, Faculty of Science, Damietta UniversityNuclear Material AuthorityGeology Department, Faculty of Science, Damietta UniversityGeology Department, Faculty of Science, Menoufia UniversityAbstract In this study, we explore thrust system, flower structures and transpressive duplexes in the Zeidun-Kareim belt (ZKB) in the Egyptian Nubian Shield (ENS; northwestern ANS). Filed observations and the measured stretched lineations along thrust planes reveal two main thrusting directions; ESE- (to NE- and NNE-)- and NW- (to WNW-)-directions belonging to two main phases of contraction. The timing of both phases is indirectly constrained. The older ESE- (to NE- and NNE-)-vergent thrusting is attributed to the E-W Gondwana assembly. The younger NW- (to WNW-)-vergent thrusting is akin to the Najd Orogeny. The poles to the in-sequence thrusts lie close to the poles of stretching lineations. The mean orientations of thrust propagation are, respectively, 059° and 309°. Propagation of thrusting along the two main thrusting directions resulted in the formation of a complete geometry of thrust duplex system, imbricate nappe stacking, flower structures and thrust-related folding. The top-to- ESE- (to NE- and NNE-) transpression reflects dextral sense, whereas the top-to- NW- (to WNW-) transpression exhibits sinistral sense, in compatible with those recorded and argued by many authors elsewhere in the ENS and the entire ANS. Our study fully constraints the ZKB spathio-temporal tectonic evolution which involves three main stages.https://doi.org/10.1038/s41598-024-79864-4Arabian-Nubian ShieldEast African OrogenNajd OrogenyThrust duplexesTranspression |
| spellingShingle | Zakaria Hamimi Magdi Khalil Hoda Ragab Saad Mahmoud N. El-Tawapty Hosam Khamis Ahmed Elbahrawy Ashraf S. Abdelmaksoud Thrust system, flower structures and transpressive duplexes in Zeidun-Kareim Belt, Central Tectonic Province, Egyptian Nubian Shield (East African Orogen) Scientific Reports Arabian-Nubian Shield East African Orogen Najd Orogeny Thrust duplexes Transpression |
| title | Thrust system, flower structures and transpressive duplexes in Zeidun-Kareim Belt, Central Tectonic Province, Egyptian Nubian Shield (East African Orogen) |
| title_full | Thrust system, flower structures and transpressive duplexes in Zeidun-Kareim Belt, Central Tectonic Province, Egyptian Nubian Shield (East African Orogen) |
| title_fullStr | Thrust system, flower structures and transpressive duplexes in Zeidun-Kareim Belt, Central Tectonic Province, Egyptian Nubian Shield (East African Orogen) |
| title_full_unstemmed | Thrust system, flower structures and transpressive duplexes in Zeidun-Kareim Belt, Central Tectonic Province, Egyptian Nubian Shield (East African Orogen) |
| title_short | Thrust system, flower structures and transpressive duplexes in Zeidun-Kareim Belt, Central Tectonic Province, Egyptian Nubian Shield (East African Orogen) |
| title_sort | thrust system flower structures and transpressive duplexes in zeidun kareim belt central tectonic province egyptian nubian shield east african orogen |
| topic | Arabian-Nubian Shield East African Orogen Najd Orogeny Thrust duplexes Transpression |
| url | https://doi.org/10.1038/s41598-024-79864-4 |
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