Relationship between photolineaments and radioactivity in Gebel El Mueilha, Central Eastern Desert, Egypt

Kamel, Ahmed Farouk

doi:10.1016/s0731-7247(83)80021-4

Cited by 6 publications

(2 citation statements)

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“…El Mueilha is medium to coarse grained granite. It is commonly pink, turns whitish towards the external parts and along fault planes [27][28][29].…”

Section: Geological Setting Of the Southern Part Of The Study Area (Smentioning

confidence: 99%

Spatial Distributions and Risk Assessment of the Natural Radionuclides in the Granitic Rocks from the Eastern Desert, Egypt

2019

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This paper investigates the distribution of four natural radioisotopes 238U, 226Ra, 232Th and 40K in one hundred twenty-five granitic samples covering sixteen mountainous areas situated at the northern, central and southern parts of the Eastern Desert of Egypt (EDE). The concentrations of the examined radioisotopes in the collected samples were recognized utilizing a HPGe detector based gamma spectrometry. The average concentrations of these radioisotopes were higher when compared with the worldwide reference values. The radiation risk indicators including the radium equivalent activity index (Raeq), external and internal hazard indicators (Hex and Hin), external and internal level indicators (Iα and Iγ), absorbed dose rate (ADR), annual effective dose rate (AEDR), annual gonadal dosage equivalent (AGDE), and excess lifetime cancer risk (ELCR), associated with these radioisotopes have been calculated and compared with their recommended global values and safety limits. These indicators showed that the granites from most studied areas exceeded the universal standards pointing to the difficulty of using them as building materials. This study together with future investigations will serve to develop an essential database for future environmental monitoring surveys.

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“…El Mueilha is medium to coarse grained granite. It is commonly pink, turns whitish towards the external parts and along fault planes [27][28][29].…”

Section: Geological Setting Of the Southern Part Of The Study Area (Smentioning

confidence: 99%

Spatial Distributions and Risk Assessment of the Natural Radionuclides in the Granitic Rocks from the Eastern Desert, Egypt

2019

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“…6&7), Abu El-Maaty and Ali Bik, 2000. Kamel (1983) reported 280 dykes in El-Mueilha area of varying composition from dolerite, diorite to acidic aplite and granophyres. The main trends of these dykes are the NE-SW and E-W directions with less dominant NW-SE direction.…”

Section: Introductionmentioning

confidence: 99%

Contribution to Geology and Uranium Distribution of Some Basement Rocks in El-Mueilha Area, South Eastern Desert, Egypt

Mohammaden¹,

Abdou²,

Badran³

2018

Nuclear Sciences Scientific Journal

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Metadacite is composed of phenocrysts of plagioclase, quartz, K-feldspar, hornblende and, in less order, biotite. These minerals are embedded in ground mass of felsic and mafic minerals forming the porphyroblast texture. The meta-andesite is mainly composed of plagioclase, hornblende and quartz showing common porphyroblast texture in addition to the descriptive pilotaxitic textures. The more or less availability of the mineral assemblage of chlorite, actinolite, epidote, sericite, zeosite, plagioclase and quartz might support that both the metadacite and metandesite are susceptible to change in temperature and pressure and they were affected by the low greenschist facies metamorphism. The granitoid rocks are recognized as monzogranite, granodiorite and quartz-diorite. All of them showed the traditional petrographic features and mineral composition. However presence of more than one phase of some main minerals in the same rock may indicate successive magmatic crystallization history. The REE data of the studied granitoids points to a complicated origin of these rocks and their arising from volcanic arc-magmatism with significant role of some minerals, e.g. the orthopyroxenes, clinopyroxenes, plagioclases and zircon, found in parent sources of these granitoids. Both the monzogranite and the granodiorite are considered as uraniferous granites and tend to be of fertile type. The uranium seems to be of magmatic origin, particularly in the monzogranite, and linked to the accessory minerals with probable leaching from its bearing partial-metamectized zircon resulted in a disequilibrium state.

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Assessment of the natural radioactivity and radiological hazards in granites of Mueilha area (South Eastern Desert, Egypt)

et al. 2018

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Relationship between photolineaments and radioactivity in Gebel El Mueilha, Central Eastern Desert, Egypt

Cited by 6 publications

References 0 publications

Spatial Distributions and Risk Assessment of the Natural Radionuclides in the Granitic Rocks from the Eastern Desert, Egypt

Spatial Distributions and Risk Assessment of the Natural Radionuclides in the Granitic Rocks from the Eastern Desert, Egypt

Contribution to Geology and Uranium Distribution of Some Basement Rocks in El-Mueilha Area, South Eastern Desert, Egypt

Assessment of the natural radioactivity and radiological hazards in granites of Mueilha area (South Eastern Desert, Egypt)

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