Mineral chemistry of banded migmatites from Hafafit and Feiran areas, Egypt

Kabesh, Mona; Asran, Asran M.; Rahman, Ezzat Abdel

doi:10.1007/s12517-012-0628-0

Cited by 9 publications

(6 citation statements)

References 18 publications

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“…2). These include: 1) The "Feiran-Solaf metamorphic complex," one of the highest-grade metamorphic complexes in the "Arabian-Nubian Shield," is a part of the infrastructure and the "Pan-African basement complex" (Kabesh et al, 2013). These rocks are represented as a "NW-trending gneiss" belt, with an average "length and width" of 40 km and 7.5 km, respectively.…”

Section: Study Area and Its Geologymentioning

confidence: 99%

Landslide susceptibility, ensemble machine learning, and accuracy methods in the southern Sinai Peninsula, Egypt: Assessment and Mapping

Youssef,

El‑Haddad,

Skilodimou

et al. 2023

Preprint

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Each year, thousands of tourists visit Egypt's Wadi Feiran region, one of the most popular tourist sites in the Sinai Peninsula. The region’s topography is distinctive and diverse, making it particularly susceptible to “natural disasters” (such as floods and landslides). The current study deals with landslide hazards as a critical hazard type, where, after rainfall, hundreds of landslides occur annually, and landslide disaster assessments are becoming more necessary to reduce mountain hazards. The current research mapped "landslide susceptibility" in the Wadi Feiran basin using three different modeling strategies: “Logistic Regression” -LR, “Artificial Neural Network”-ANN, and an "ensemble" of LR and ANN. A “landslides” map was first created as a preliminary stage, using 800 landslide locations acquired from multiple data sources (30% validation datasets, 70% training datasets), including historical records, field surveys, and high-resolution satellite imagery. In addition, fourteen landslide causative parameters (LCPs), elevation (El), “distance to wadis” (DtW), “distance to fault” (DtF), “distance to road” (DtR), lithology (Lith), aspect (As), “profile-curvature” (PrC), “plan-curvature” (PlC), “slope length” (LS), slope-angle (Sa), “topographic wetness index” (TWI), “relative slope position” (RSP), rainfall (Ra), and “topographic roughness index” (TRI) were employed. These models' accuracy was evaluated using “receiver operating characteristics and area under the curve (ROC - AUC),” “root mean square error”-RMSE, and “kappa index”-K. According to the findings, the AUC for LR, ANN, and ensemble of LR &ANN were 82%, 89%, and 91%, respectively. The results showed that the ensemble model outperformed ANN and LR by 2.3% and 10.9%, respectively, whereas ANN model outperformed LR by 8.5%. Other statistical indices also revealed that the RMSE and kappa index values obtained by LR were the highest and the lowest, respectively, whereas the RMSE and kappa index values generated by the LR&ANN ensemble were the lowest and the highest, respectively. These results indicate that landslides are influenced by a wide variety of natural and anthropogenic factors. To better manage and avoid landslides, it is important to create maps that show the area’s most susceptible to landslides.

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Section: Study Area and Its Geologymentioning

confidence: 99%

Landslide susceptibility, ensemble machine learning, and accuracy methods in the southern Sinai Peninsula, Egypt: Assessment and Mapping

Youssef,

El‑Haddad,

Skilodimou

et al. 2023

Preprint

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“…The Feiran-Solaf metamorphic complex (FSMC) of Sinai Peninsula is among the highest grade metamorphic complexes in the Arabian-Nubian Shield (El Tokhi 1992; Abu-Alam 2010; Kabesh et al 2013). These rocks are represented as a NWtrending gneiss belt that is about 40 km long and 5-10 km wide intruded by granitic plutons and dyke swarms of porphyritic granites and dolerites.…”

Section: The Infrastructure and Pan-african Basement Complexmentioning

confidence: 99%

“…The southern portion of the Sinai Peninsula also includes mountains of the Pan-African basement complex. The paleozoic sedimentary rocks cover the northern part of the peninsula (Kabesh et al 2013). The shield developed is contemporaneous with the Neoproterozoic East African Orogeny of about 900-550 Ma (Be'eri-Shlevin et al 2009), and is widely viewed as an association of volcanic-arc and ophiolite remnants that were shaped during the assembly of the eastern part of Gondwana (Bentor 1985;Stern 1994Stern , 2002Stoeser and Frost 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have been done on and around Wadi Feiran including geology, hydrology, hydrogeology, geomorphology, and geophysics such as the works of Wachs et al (1979), Kassem (1981), Issar andGilad (1982), El-Ghawaby et al (1983), El-Refaei (1984), El-Shamy et al (1989), El-Rayes (1992), El-Refaei (1992), El Tokhi (1992), El-Etr et al (1993), Ghodeif (1995), Hassan (1997), Shendi (1997), Geriesh (1998), Geriesh et al (2001), Abou El-Magd (2003, El-Shafei and Kusky (2003), Shendi and Abouelmagd (2004), Gaber et al (2009), Sultan et al (2009), Abu-Alam (2010), Massoud et al (2010), El-Sayed et al (2012, Kabesh et al (2013), Seleem (2013), Alrikabi et al (2015), Mohamed et al (2015), and Arnos (2016). Majority of these studies focused on hydrology, groundwater and geophysics.…”

Section: Introductionmentioning

confidence: 99%

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Geomorphic and lithologic characteristics of Wadi Feiran basin, southern Sinai, Egypt, using remote sensing and field investigations

et al. 2017

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Wadi Feiran is an important drainage basin in southern Sinai Peninsula covering an area of about 1785 km 2 , its streams drain into the Gulf of Suez crossing variety of rocks and sedimentary units varied in age from Precambrian to Quaternary. Field investigations, geographic information systems (GIS) and remote sensing studies including Landsat-7 ETM+, Radarsat-1, and SRTM DEM were integrated to reveal its lithologic, geologic and geomorphic features. Besides the field investigations, rock units including basement and pre-and syn-rift sedimentary units were discriminated using band ratios and principal component analysis techniques (PCA). Such techniques revealed that the crystalline rocks covering W. Feiran are unaltered rocks lacking OH-bearing minerals. Radar data successfully displayed the structures and geomorphic features related to topography. Moreover, the techniques allowed the extraction of the dyke-like structures along faults and shear zones. This also characterized the topographic variations through analysis of the shaded terrain and the altitudinal profiles. The results of data integration, lineament analysis and lineament density maps revealed that the structural grain in the present study has four different trends: N20-45E, N30-45W, N-S and E-W. Based on analysis of radar data and geomorphic indices, W. Feiran is an asymmetrical basin, its left side occupies ∼34% of the total area that leads to a supposedly massive tilt towards the south which caused the southwestward slope.

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“…The Upper Cretaceous rocks often occur as continuous belts, allowing sites to be surveyed relatively far apart and adequately sampled. Many studies have been done on and around Wadi Feiran including geology, hydrology, hydrogeology, geomorphology, and geophysics such as the works of Wachs et al (1979), Kassem (1981), Issar and Gilad (1982), El-Ghawaby et al (1983), ElRefaei (1984), El-Shamy et al (1989), El-Rayes (1992), El-Refaei (1992), El Tokhi (1992, ElEtr et al (1993), Ghodeif (1995), Hassan (1997), Shendi (1997), Geriesh (1998), Geriesh et al (2001), Abou El-Magd (2003), El-Shafei and Kusky (2003), Shendi and Abouelmagd (2004), Gaber et al (2009), Sultan et al (2009), Abu-Alam (2010), Massoud et al (2010), El-Sayed et al (2012), Kabesh et al (2013), Seleem (2013), Alrikabi et al (2015), Mohamed et al (2015), and Arnos (2016). The majority of these studies focused on hydrology, groundwater, and geophysics.…”

Section: Introductionmentioning

confidence: 99%

Facies Analysis and Geochemistry of Upper Cretaceous Carbonate Rocks, Wadi Feiran District, West Central Sinai, Egypt

Shalaby

Saadawi

Kamel

et al. 2022

IGJ

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The current study focuses on the geochemistry and facies analysis of the Upper Cretaceous carbonate rocks deposited in Wadi Feiran, West-Central Sinai, Egypt. The study area is defined by the careful petrographic and geochemical examination of four stratigraphic units, including Raha, Wata, Matulla, and Sudr formations. Ten microfacies types were recognized, listed from bottom to top; Fossiliferous-micrite, Bio-micrite, Pell-Bio-Micrite, Argillaceous Dolo-Biomicrite, Glauco- Dolo-Sparite, Glauco-Dolo-Microsparite, Dolo-Silty-Micrite, Bio- Pell-Sparite, Micrite and Foraminifera Biomicrite. The vertical distribution of these microfacies types indicates cyclic alternation between open and confined marine (bank interior deposits) deposition environments. The carbonate rocks were exposed to subaerial and submarine depositional settings diagenetically. The overflow dispersion of both main and minor components was determined by applying chemical and physicochemical parameter assessments to the selected samples. The review demonstrates that shallow sea conditions prevailed during the Upper Cretaceous.

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Mineral chemistry of banded migmatites from Hafafit and Feiran areas, Egypt

Cited by 9 publications

References 18 publications

Landslide susceptibility, ensemble machine learning, and accuracy methods in the southern Sinai Peninsula, Egypt: Assessment and Mapping

Landslide susceptibility, ensemble machine learning, and accuracy methods in the southern Sinai Peninsula, Egypt: Assessment and Mapping

Geomorphic and lithologic characteristics of Wadi Feiran basin, southern Sinai, Egypt, using remote sensing and field investigations

Facies Analysis and Geochemistry of Upper Cretaceous Carbonate Rocks, Wadi Feiran District, West Central Sinai, Egypt

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