On the Pan-African transition of the Arabian–Nubian Shield from compression to extension: The post-collision Dokhan volcanic suite of Kid-Malhak region, Sinai, Egypt

El-Bialy, Mohammed Z.

doi:10.1016/j.gr.2009.06.004

Cited by 99 publications

(33 citation statements)

References 119 publications

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“…Additional data from other volcanic suites in Sinai (e.g., Khashabi, Meknas, Iqna Shar'a, Sa'al-Zaghra, Kid-Malhak, Ferani and Rutig; Fig. 1) which were previously linked to the Dokhan Volcanics (Basta, 1997;Azzaz et al, 2000;Hassan et al, 2001;Samuel et al, 2001;Moussa, 2003;Azer, 2007;El-Bialy 2010) are also compared to those from the Wadi Rufaiyil successions. Based on their stratigraphic position and geochemical data the volcanic rocks of the Wadi Rufaiyil successions can be equate with the Dokhan Volcanics of the ED.…”

Section: Correlations With Late Neoproterozoic Dokhan-hammamat Succesmentioning

confidence: 90%

“…1) have been equated with the Dokhan-Hammamat successions (Schürmann, 1966;Shimron, 1980;Bentor, 1985;El-Gaby et al, 1991;Basta, 1997;Azzaz et al, 2000;Hassan et al, 2001;Samuel et al, 2001;Moussa, 2003;Azer, 2007;El-Bialy 2010). The associated sediments, where preserved, are immature, and include conglomerates, sandstones and siltstones (El-Gaby et al, 1991;Moussa, 2003;Azer, 2007;El-Bialy 2010;Stern et al, 2010). The stratigraphic position of these successions in relation to the post-collisional batholiths is not fully resolved.…”

Section: Regional Geologymentioning

confidence: 99%

“…Some authors proposed, however, that they have been generated Fig. 7 (continued) during transition from subduction-related to extension environment (e.g., Ressetar and Monrad, 1983;Moghazi, 2003;Eliwa et al, 2006;El-Bialy, 2010).…”

Section: Tectonic Settingmentioning

confidence: 99%

“…630-590 Ma Dokhan Volcanics comprising mostly calc-alkaline intermediate to felsic volcanics (Basta et al, 1980;Heikal et al, Garfunkel, 1999). However, some of the weakly-to non-metamorphosed volcano-sedimentary successions of Sinai have been related to the Dokhan-Hammamat successions of the ED (e.g., Schürmann, 1966;Bentor, 1985;El-Gaby et al, 1991;Azzaz et al, 2000;Hassan et al, 2001;Samuel et al, 2001;Moussa, 2003;Azer, 2007;El-Bialy, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Late Neoproterozoic volcano-sedimentary successions of Wadi Rufaiyil, southern Sinai, Egypt: A case of transition from late- to post-collisional magmatism

Azer

Farahat

2011

Journal of Asian Earth Sciences

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Section: Correlations With Late Neoproterozoic Dokhan-hammamat Succesmentioning

confidence: 90%

Section: Regional Geologymentioning

confidence: 99%

Section: Tectonic Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Late Neoproterozoic volcano-sedimentary successions of Wadi Rufaiyil, southern Sinai, Egypt: A case of transition from late- to post-collisional magmatism

Azer

Farahat

2011

Journal of Asian Earth Sciences

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“…Furthermore, geochemical and petrogenetic investigations of the KMC metavolcanic units are mostly restricted to Malhaq Formation in the northern part (e.g. Furnes et al, 1985;Ghoneim et al, 1985;Hassanen, 1992;El-Metwally et al, 1999;El-Bialy, 2010). Base metal sulphides and albitite masses are the main types of mineralization occurring in the SamraTarr area.…”

Section: Introductionmentioning

confidence: 99%

Petrologic and geochemical characterization and mineralization of the metavolcanic rocks of the Heib Formation, Kid Metamorphic Complex, Sinai, Egypt

Khalifa

El-Bialy

Hassan

2011

Geoscience Frontiers

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Metavolcanic rocks hosting base metal sulphide mineralization, and belonging to the Kid Metamorphic Complex, are exposed in the Samra-Tarr area, Southern Sinai. The rocks consist of slightly metamorphosed varicolored porphyritic lavas of rhyolite-to-andesite composition, and their equivalent pyroclastics. Geochemically, these metavolcanics are classified as high-K calc-alkaline, metaluminous andesites, trachyandesites, dacites, and rhyolites. The geochemical characteristics of these metavolcanics strongly point to their derivation from continental crust in an active continental margin. The sulphide mineralization in these metavolcanics occurs in two major ore zones, and is represented by four distinct styles of mineralization. The mineralization occurs either as low-grade disseminations or as small massive pockets. The associated hydrothermal alterations include carbonatization, silicification, sericitization and argillic alterations. The base metal sulphide mineralization is epigenetic and was formed by hydrothermal solutions associated with subduction-related volcanic activity. ª 2011, China University of Geosciences (Beijing) and Peking University. Production and hosting by Elsevier B.V. All rights reserved.

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Neoproterozoic calc‐alkaline peraluminous granitoids of the Deleihimmi pluton, Central Eastern Desert, Egypt: implications for transition from late‐ to post‐collisional tectonomagmatic evolution in the northern Arabian–Nubian Shield

et al. 2011

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The widely distributed late-collisional calc-alkaline granitoids in the northern Arabian-Nubian Shield (ANS) have a geodynamic interest as they represent significant addition of material into the ANS juvenile crust in a short time interval . The Deleihimmi granitoids in the Egyptian Central Eastern Desert are, therefore, particularly interesting since they form a multiphase pluton composed largely of latecollisional biotite granitoids enclosing granodiorite microgranular enclaves and intruded by leuco-and muscovite granites. Geochemically, different granitoid phases share some features and distinctly vary in others. They display slightly peraluminous (ASI ¼ 1-1.16), non-alkaline (calc-alkaline and highly fractionated calc-alkaline), I-type affinities. Both biotite granitoids and leucogranites show similar rare earth element (REE) patterns [(La/Lu) N ¼ 3.04-2.92 and 1.9-1.14; Eu/Eu Ã ¼ 0.26-0.19 and 0.11-0.08, respectively) and related most likely by closed system crystal fractionation of a common parent. On the other hand, the late phase muscovite granites have distinctive geochemical features typical of rare-metal granites. They are remarkably depleted in Sr and Ba (4-35 and 13-18 ppm, respectively), and enriched in Rb (381-473 ppm) and many rare metals. Moreover, their REE patterns show a tetrad effect (TE 1,3 ¼ 1.13 and 1.29) and pronounced negative Eu anomalies (Eu/Eu Ã ¼ 0.07 and 0.08), implying extensive open system fractionation via fluid-rock interaction during the magmatic stage. Origin of the calc-alkaline granitoids by high degree of partial melting of mafic lower crust with subsequent crystal fractionation is advocated. The broad distribution of late-collisional calc-alkaline granitoids in the northern ANS is related most likely to large areal and intensive lithospheric delamination subsequent to slab break-off and crustal/mantle thickening. Such delamination caused both crustal uplift and partial melting of the remaining mantle lithosphere in response to asthenospheric uprise. The melts produced underplate the lower crust to promote its melting. The presence of microgranular enclaves, resulting from mingling of mantle-derived mafic magma with felsic crustalderived liquid, favours this process. The derivation of the late-phase rare-metal granites by open system fractionation via fluid interaction is almost related to the onset of extension above the rising asthenosphere that results in mantle degassing during the switch to post-collisional stage. Consequently, the switch from late-to post-collisional stage of crustal evolution in the northern ANS could be potentially significant not only geodynamically but also economically.

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On the Pan-African transition of the Arabian–Nubian Shield from compression to extension: The post-collision Dokhan volcanic suite of Kid-Malhak region, Sinai, Egypt

Cited by 99 publications

References 119 publications

Late Neoproterozoic volcano-sedimentary successions of Wadi Rufaiyil, southern Sinai, Egypt: A case of transition from late- to post-collisional magmatism

Late Neoproterozoic volcano-sedimentary successions of Wadi Rufaiyil, southern Sinai, Egypt: A case of transition from late- to post-collisional magmatism

Petrologic and geochemical characterization and mineralization of the metavolcanic rocks of the Heib Formation, Kid Metamorphic Complex, Sinai, Egypt

Neoproterozoic calc‐alkaline peraluminous granitoids of the Deleihimmi pluton, Central Eastern Desert, Egypt: implications for transition from late‐ to post‐collisional tectonomagmatic evolution in the northern Arabian–Nubian Shield

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