Petrogenesis and Tectonic Evolution of Kab Amiri Ophiolites and Island-Arc Assemblages, Central Eastern Desert, Egypt: Petrological and Geochemical Constraints
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Petrogenesis and Tectonic Evolution of Kab Amiri Ophiolites and Island-Arc Assemblages, Central Eastern Desert, Egypt: Petrological and Geochemical Constraints
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| Автор |
Taalab, S. A.
Abdel-Rahman, A. M. El-Awny, H. Awad, H. A. Zakaly, H. M. H. Fahmy, W. Ene, A. |
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| Тематика |
CENTRAL EASTERN DESERT
FORE-ARC METASEDIMENTS OPHIOLITE SERPENTINITES SPILITE TECTONIC IMPLICATION |
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| Описание |
The Kab Amiri area in the Central Eastern Desert (CED) of Egypt comprises ophiolitic rocks, island arc metasediments, and granitic rocks. This study deals with the petrography and geochemistry of the ophiolitic and island arc rocks to understand their petrogenesis and geodynamic evolution of the CED ophiolitic belt. The Kab Amiri ophiolite is dismembered, comprising serpentinites and metabasalt (spilite). Serpentinites have low contents of Al2O3 (1.14 wt%) and CaO (0.65 wt%), suggesting they are depleted peridotite protoliths (e.g., depleted harzburgites to dunites). The high L.O.I. value (13.7 wt%) of serpentinite rocks indicates intense hydration and serpentinization during alteration processes. Petrographic and geochemical studies suggest that serpentinites were likely formed after depleted peridotites in a supra-subduction zone (SSZ) setting (e.g., a fore-arc setting). Spilitic basalt shows a tholeiitic affinity of the depleted mantle source. The arc-related metasediments are represented mainly by schists and slate. Many samples of metasediments are relatively low in alumina (Al2O3 < 15%), suggesting a low clay content and formation in an island arc setting. In contrast, protoliths of island-arc metabasalts and meta-andesites crystallized from calc-alkaline magmas in the immature oceanic arcs. © 2023 by the authors.
Universitatea 'Dunărea de Jos' Galați, UDJG; Ministry of Education and Science of the Russian Federation, Minobrnauka The work of author HZ is funded by the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University Program of Development within the Priority-2030 Program). The work of author A.E. and APC was financed by Dunarea de Jos University of Galati, Romania. |
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| Дата |
2024-04-05T16:21:21Z
2024-04-05T16:21:21Z 2023 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) |info:eu-repo/semantics/publishedVersion |
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| Идентификатор |
Taalab, SA, Abdel-Rahman, AM, El-Awny, H, Awad, HA, Zakaly, HMH, Fahmy, W & Ene, A 2023, 'Petrogenesis and Tectonic Evolution of Kab Amiri Ophiolites and Island-Arc Assemblages, Central Eastern Desert, Egypt: Petrological and Geochemical Constraints', Minerals, Том. 13, № 4, 528. https://doi.org/10.3390/min13040528
Taalab, S. A., Abdel-Rahman, A. M., El-Awny, H., Awad, H. A., Zakaly, H. M. H., Fahmy, W., & Ene, A. (2023). Petrogenesis and Tectonic Evolution of Kab Amiri Ophiolites and Island-Arc Assemblages, Central Eastern Desert, Egypt: Petrological and Geochemical Constraints. Minerals, 13(4), [528]. https://doi.org/10.3390/min13040528 2075-163X Final All Open Access, Gold https://www.scopus.com/inward/record.uri?eid=2-s2.0-85156156860&doi=10.3390%2fmin13040528&partnerID=40&md5=cd15f9f949f94bc6d4b5fdfcc6c028f5 https://www.mdpi.com/2075-163X/13/4/528/pdf?version=1681028390 http://elar.urfu.ru/handle/10995/130456 10.3390/min13040528 85156156860 000977251000001 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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| Формат |
application/pdf
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| Издатель |
MDPI
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| Источник |
Minerals
Minerals |
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