Late Neoproterozoic basement rocks of Meatiq area, Central Eastern Desert, Egypt: Petrography and remote sensing characterizations

Hassan, Safaa M.; kazzaz, Yahiya A. El; Taha, Maysa M.N.; Mohammad, Abdullah T.

doi:10.1016/j.jafrearsci.2017.04.001

Cited by 35 publications

(4 citation statements)

References 39 publications

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“…The band ratio (BR) [42] can enhance spectral contrast of specific absorption features, while relative absorption-band depth (RBD) [43] is a useful three-point ratio for enhance the Al-OH and Mg-OH absorption in SWIR [12]. Both BR and RBD were widely used for mapping lithology and hydrothermal alteration [44][45][46][47][48]. In this study, the BR and RBD methods were both employed to enhance the spectral characteristics of different stage intrusions and dikes caused by characteristic minerals such as sericite, biotite, and amphibole.…”

Section: Image Enhancement By Br Rbd and False-colormentioning

confidence: 99%

Mapping of Intrusive Complex on a Small Scale Using Multi-Source Remote Sensing Images

Zhang

Duan

et al. 2020

IJGI

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Multi-stage intrusive complex mapping plays an important role in regional mineralization research. The similarity of lithology characteristics between different stages of intrusions necessitates the use of richer spectral bands, while higher spatial resolution is also essential in small-scale research. In this paper, a multi-source remote sensing data application method was proposed. This method includes a spectral synergy process based on statistical regression and a fusion process using Gram–Schmidt (GS) spectral sharpening. We applied the method with Gaofen-2 (GF2), Sentinel-2, and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data to the mapping of the Mountain Sanfeng intrusive complex in northwest China in which Carboniferous intrusions have been proven to be directly related to the formation of Au deposits in the area. The band ratio (BR) and relative absorption band depth (RBD) were employed to enhance the spectral differences between two stage intrusions, and the Red-Green-Blue (RGB) false colour of the BR and RBD enhancement images performed well in the west and centre. Excellent enhancement results were obtained by making full use of all bands of the synergistic image and using the Band Ratio Matrix (BRM)-Principal Component Analysis (PCA) method in the northeast part of the study area. A crucial improvement in enhancement performance by the GS fusion process and spectral synergy process was thus shown. An accurate mapping result was obtained at the Mountain Sanfeng intrusive complex. This method could support small-scale regional geological survey and mineralization research in this region.

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Section: Image Enhancement By Br Rbd and False-colormentioning

confidence: 99%

Mapping of Intrusive Complex on a Small Scale Using Multi-Source Remote Sensing Images

Zhang

Duan

et al. 2020

IJGI

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“…Hassan et al [68] combined analyses of Landsat and ASTER data to map the basement rocks associated with the Meatiq dime, Egypt. ASTER data analysis revealed four granitic varieties, and Landsat data analysis allowed regional geologic mapping.…”

Section: Lithologic Mapping With Aster and Other Remote Sensing Datamentioning

confidence: 99%

Twenty Years of ASTER Contributions to Lithologic Mapping and Mineral Exploration

Abrams

Yamaguchi

2019

Remote Sensing

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The Advanced Spaceborne Thermal Emission and Reflection Radiometer is one of five instruments operating on the National Aeronautics and Space Administration (NASA) Terra platform. Launched in 1999, the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) has been acquiring optical data for 20 years. ASTER is a joint project between Japan’s Ministry of Economy, Trade and Industry; and U.S. National Aeronautics and Space Administration. Numerous reports of geologic mapping and mineral exploration applications of ASTER data attest to the unique capabilities of the instrument. Until 2000, Landsat was the instrument of choice to provide surface composition information. Its scanners had two broadband short wave infrared (SWIR) bands and a single thermal infrared band. A single SWIR band amalgamated all diagnostic absorption features in the 2–2.5 micron wavelength region into a single band, providing no information on mineral composition. Clays, carbonates, and sulfates could only be detected as a single group. The single thermal infrared (TIR) band provided no information on silicate composition (felsic vs. mafic igneous rocks; quartz content of sedimentary rocks). Since 2000, all of these mineralogical distinctions, and more, could be accomplished due to ASTER’s unique, high spatial resolution multispectral bands: six in the SWIR and five in the TIR. The data have sufficient information to provide good results using the simplest techniques, like band ratios, or more sophisticated analyses, like machine learning. A robust archive of images facilitated use of the data for global exploration and mapping.

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“…Talc-graphite schist (TGSH) is low-to medium-grade metamorphic rock of greyish-to greyish-green color of green schist facies [30]. It was derived from intercalated passamo-pelitic sediments with biogenic materials in the form of organo-mineral complex (calcareous clays enriched with organic matters) via successive long-term metamorphic processes [9].…”

Section: Introductionmentioning

confidence: 99%

“…It was derived from intercalated passamo-pelitic sediments with biogenic materials in the form of organo-mineral complex (calcareous clays enriched with organic matters) via successive long-term metamorphic processes [9]. It belongs to Abu Fannani thrust sheet (ophiolitic mélange matrix) rock units that exposed at Meatiq domal area, Central Eastern Desert of Egypt [30]. Hundreds of millions of tons of the raw TGSH are available in Meatiq area and other different localities in the Eastern Desert (ED) of Egypt that are not adequately employed in any industrial activity till now and still waiting for the proper use.…”

Section: Introductionmentioning

confidence: 99%

Talc-graphite schist as a natural organo-mineral complex for methylene blue remediation: kinetic and isotherm study

et al. 2020

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Talc-graphite schist (TGSH) is a natural organo-mineral complex that was derived from the regional metamorphism of organic matter-bearing calcareous clays under the lowest temperature and pressure of the green schist facies (573-632 K and 1-3 Kbars, respectively). The application of TGSH that is widely available in the Meatiq area (Eastern Desert, Egypt) was investigated for the first time ever in the remediation of methylene blue dye (MB) from aqueous solutions. The characterization of the TGSH was carried out using various techniques (XRF, XRD, SEM, FT-IR and BET surface area), and its MB removal capacity was estimated at different experimental conditions. The MB adsorption by TGSH was time-and pH-dependent process, where 120 min was sufficient enough to attain equilibrium. The MB adsorption capacity by the TGSH was directly proportional to the applied temperature, confirming that the MB adsorption process was endothermic in behavior. Based on the determination coefficients, the pseudo-second-order equation (R 2 = 0.939) explained MB adsorption data better than the first-order one (R 2 = 0.653). Meanwhile, intra-particle diffusion was not the sole controlling rate in MB removal by the TGSH. Moreover, the nonlinear regressions of Langmuir model (R 2 = 0.876) explained the equilibrium data better than the other applied models (Temkin, R 2 = 0.793, and Freundlich, R 2 = 0.752). On the other hand, the estimated q max (maximum removal capacity) of Langmuir was 9.41 mg/g at ambient temperature. Hydrogen bonding and electrostatic interaction were the governing mechanisms of MB removal by TGSH with variable impact in accordance with the prevailing pH condition.

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Late Neoproterozoic basement rocks of Meatiq area, Central Eastern Desert, Egypt: Petrography and remote sensing characterizations

Cited by 35 publications

References 39 publications

Mapping of Intrusive Complex on a Small Scale Using Multi-Source Remote Sensing Images

Mapping of Intrusive Complex on a Small Scale Using Multi-Source Remote Sensing Images

Twenty Years of ASTER Contributions to Lithologic Mapping and Mineral Exploration

Talc-graphite schist as a natural organo-mineral complex for methylene blue remediation: kinetic and isotherm study

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