Application of remote sensing data integration in detecting mineralized granitic zones: A case study of the Gabal Al-Ijlah Al-Hamra, Central Eastern Desert, Egypt

Khashaba, Saif M. Abo; El-Shibiny, N. H.; Hassan, Safaa M.; Takazawa, Eiichi; Khedr, Mohamed Zaki

doi:10.1016/j.jafrearsci.2023.104855

Cited by 14 publications

(46 citation statements)

References 33 publications

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“…The BR (band6/band8) was able to discriminate amphibole [ [66] , [67] , [68] ], which was detected at several areas, such as the sedimentary formations of the Mesozoic (r) and the Cenozoic (s), the pluton of Oussilkane with pyroxene granite and monzogranites, quartz monzonites, and monzo-gabbro-diorites (c), also at the Igoudrane pluton (b) and the Imiter series (andesitic flows) (d). The sericite-illite-smectite were determined using the ratios (band5+band7)/band6 [ 69 ], muscovite (band7/band6) [ 70 ] as well as phengite (band5/band6) [ 70 ] extended at the sedimentary Paleozoic cover (q), the quartz diorites of the Tazzouakt pluton (j), the andesitic flows (d), the granodiorites and tonalites of the Igoudrane pluton (b). The basic degree Index SiO2 used the ratios of (band12/band13) [ 36 , 71 ], where it has a fairly large area, and this were confirmed by the X-Ray diffraction analysis with also the filed survey in which several veins of quartz and acid rocks were found.…”

Section: Resultsmentioning

confidence: 99%

“…The basic degree Index SiO2 used the ratios of (band12/band13) [ 36 , 71 ], where it has a fairly large area, and this were confirmed by the X-Ray diffraction analysis with also the filed survey in which several veins of quartz and acid rocks were found. The Carbonate-Chlorite-epidote with a ratio of (band7+band9)/band 8 [ 69 ] is scattered in the western part at the Cenozoic formations (s), the Mesozoic (r), the rhyolitic flows of Jbel Igoudrane (h), the andesitic flows (d), the biotite monzogranite and hornblende (m) and the Oussilkane Pluton (c). The dolomite (band6+band8)/band7 [ 72 ] occupies almost the entire study area except the northern Paleozoic structures (q).…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the hydroxide minerals (band6/band2) [ 73 ] are largely present in the pluton of Oussilkane (c), the dacitic and andesitic lavas and associated tuffs (n), the ignimbrites, volcanic conglomerates and pyroclastic (o, p), the tonalites of Bou Teglimt pluton (f), the tonalites of Tazzouakt pluton (k), the andesitic flows (d), the Igoudrane pluton (b) and the Paleozoic (q). At last, the ferrous silicates (band5/band4) [ 69 ] we note specially the sedimentary sequences with regional low-grade metamorphism of low Cryogenian (a), the rhyolite flows and domes (h), the biotite monzogranites (m) and the granites and monzo-gabbro diorites of the Oussilkane pluton (c) [ Fig. 5 (a-i)].…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Lithological discrimination and mineralogical mapping using Landsat-8 OLI and ASTER remote sensing data: Igoudrane region, jbel saghro, Anti Atlas, Morocco

Baid,

Tabit,

Algouti

et al. 2023

Heliyon

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Lithological discrimination and mineralogical mapping using Landsat-8 OLI and ASTER remote sensing data: Igoudrane region, jbel saghro, Anti Atlas, Morocco

Baid,

Tabit,

Algouti

et al. 2023

Heliyon

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“…This large area is affected by the Najd strike-slip shear-zone (NW-SE) and its related structure, such as the Nugrus thrust/or shear zone, trending in a NW-SE direction. This Najd shear zone (or the Nugrus shear zone) is not only controlling the distribution of beryl mineralization in the SED of Egypt, but also structurally controls the occurrence and accumulation of garnet mineralization, rare metalbearing granite, and gold concentrations of the Sukari gold mine; this is because this zone is considered a channels for hydrothermal fluids and alterations [93][94][95][96][97]. The Nugrus faults and shear zone (Figure 1b), with the NNW to NW-directed wrench corridor [87], may serve as conduits for the migration and circulation of hydrothermal fluid, which intensifies the hydrothermal alteration of granites and promotes mineral accumulation in a specific zone.…”

Section: Factors Controlling Beryl Distribution In the Sedmentioning

confidence: 99%

The Geology and Mineral Chemistry of Beryl Mineralization, South Eastern Desert, Egypt: A Deeper Insight into Genesis and Distribution

Khedr,

Saleh,

Abdelfadil

et al. 2024

Minerals

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Beryl mineralization in the Nugrus-Sikait domain in the South Eastern Desert (SED) of Egypt occurs as disseminated crystals in granitic pegmatite and quartz, as well as pegmatite veins crosscutting mélange schist and ophiolitic rocks. When granitic pegmatite comes into contact with the ophiolitic rocks, phlogopite and amphibole schists are formed due to K metasomatism. The ophiolitic mélange is intruded by leucogranite and related pegmatite along the NNW to NW Nugrus shear zone. Beryl samples have been collected from Um Sleimat, Madinat Nugrus, Wadi Abu Rusheid, and Wadi Sikait. Major oxides and in situ trace and rare earth elements (REEs) of beryl and associated minerals were analyzed through EPMA and LA-ICP-MS, respectively. The investigated beryl, based on its color and chemical compositions, can be classified into the two following types: pegmatitic beryl (type I) and schist-related beryl (type II). The former is colorless to pale green, and is mainly restricted in pegmatite veins; it is poor in Cr2O3 (up to 0.03 wt%) and MgO (Nil). The latter, deep green in color, is rich in Cr2O3 (up to 0.27 wt%) and MgO (up to 2.71 wt%), and occurs within quartz veins, phlogopite schists, and tremolite schists. The abundant beryl mineralization in phlogopite schists and their related quartz veins suggests that granite and associated pegmatite are the source rocks for the Be-bearing fluids that migrate along the NW-SE trending deep-seated tectonic zone, such as the Nugrus shear zone. Therefore, the formation of beryl in schists is attributed to the interaction of granitic/pegmatitic-derived Be-bearing fluids with serpentinite and gabbro interlayered with mélange schists. Variations in the trace and REE contents of both beryl types (I and II) indicate their two-stage formation from different compositions of Be-rich fluids, where light REEs, Zr, Nb, Ba, and Th decrease from type I beryl to type II. These two phases of beryl could be attributed to the magmatic/hydrothermal fluids associated with the pegmatite emplacement. The early phase of the late-stage magmatic-derived fluids was closely related to magma evolution and pegmatite formation, forming euhedral type I beryl. The late phase of pegmatite-derived fluids was mixed with serpentinite/schist-derived fluids that cause high V and Cr content in type II beryl. The composition of parent magmas of felsic rocks, the high degree of magma fractionation or the late stage melts, fluid compositions (rich in Be, Li, Cs, Rb, K), and alkali metasomatism, as well as the linear NW-SE trending deep-seated shear zone, are all factors possibly influencing beryl mineralization in the SED of Egypt.

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“…750 to 610 Ma [8,72,73], (3) the post-orogenic calc-alkaline and alkaline granitoid and dike swarm suites representing the EAO extensional phase that dominated from ca. 610 Ma and 535 Ma [8,72,74,75], and (4) the ophiolites and metamorphic complexes [72,75].…”

Section: Geologic Settingmentioning

confidence: 99%

Tectonic-Thermal Evolution of the Wadi El-Dahal Area, North Eastern Desert, Egypt: Constraints on the Suez Rift Development

Mansour,

Hasebe,

Khedr

et al. 2023

Minerals

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The Suez Rift developed as a northern extension of the Red Sea rift during the Oligocene-Miocene, whose flanks were constructed from the Neoproterozoic basement rocks of the Arabian–Nubian Shield. These basement rocks are comprised of the whole tectonic history since their formation. The Suez Rift initiation model and proposed thermal overprint role in the rifting process and flank development remain uncertain. Additionally, the amplitude of different regional tectonic events’ effects on the region is still debatable. Integration of fission-track thermochronology data with modeling of the time-temperature history has demonstrated efficiency in addressing such issues. In the context of this study, eleven representative samples were collected from the different rock units in the Wadi El-Dahal area at the northern tip of the western flank of the Suez Rift. These samples revealed Carboniferous zircon fission-track cooling ages of 353 ± 9 Ma and 344 ± 11 Ma. Meanwhile, the apatite fission-track analysis provided two spatially separated age groups: Permian-Triassic and Late Cretaceous, with average ages of 249 ± 11 Ma and ca. 86 ± 10 Ma, respectively. The time-temperature modeling revealed four possible cooling pulses representing exhumation events, which were initiated as a response to four tectonic activities: the accretion-subsequent event of erosion during the Neoproterozoic, the Hercynian (Variscan) tectonic event during the Devonian-Carboniferous, the Mid-Atlantic opening during the Cretaceous, and the Suez Rift opening during the Oligocene-Miocene. The western flank of the Suez Rift suggests a passive mechanical type with no extra thermal overprint, as indicated by the dominance of older thermochronological ages, modest rift flank elevations, and a reduction in the heat flow.

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Application of remote sensing data integration in detecting mineralized granitic zones: A case study of the Gabal Al-Ijlah Al-Hamra, Central Eastern Desert, Egypt

Cited by 14 publications

References 33 publications

Lithological discrimination and mineralogical mapping using Landsat-8 OLI and ASTER remote sensing data: Igoudrane region, jbel saghro, Anti Atlas, Morocco

Lithological discrimination and mineralogical mapping using Landsat-8 OLI and ASTER remote sensing data: Igoudrane region, jbel saghro, Anti Atlas, Morocco

The Geology and Mineral Chemistry of Beryl Mineralization, South Eastern Desert, Egypt: A Deeper Insight into Genesis and Distribution

Tectonic-Thermal Evolution of the Wadi El-Dahal Area, North Eastern Desert, Egypt: Constraints on the Suez Rift Development

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