干旱区生态环境知识资源中心(Arid): Integration of ASTER and geophysical data for delineating potential mineralization zones in Dungash-Atud area, Central Eastern Desert, Egypt

Arid

DOI	10.1007/s12517-021-06801-4
	Integration of ASTER and geophysical data for delineating potential mineralization zones in Dungash-Atud area, Central Eastern Desert, Egypt
	Ghazala, Hosni; Aboelkhair, Hatem; Thabet, Waleed
通讯作者	Ghazala, H (corresponding author), Mansoura Univ, Dept Geol, Fac Sci, Mansoura, Egypt.
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2021
卷号	14 期号:6
英文摘要	Dungash-Atud area, located in the southeastern Egyptian Desert, is intensively distinguished by gold mineralization and associated mineral deposits. This area was studied using the integrated analysis and interpretation of ASTER, aeromagnetic, and gamma-ray spectrometric data. For ASTER, different approaches of image processing, such as false color composite (FCC), ASTER-TIR indices, principal component analysis (PCA), and spectral mapping, have been used to determine the desired information on the geology, lithology reclassification, and the existing minerals, particularly older and younger granites, basic, and ultrabasic rocks. Also, the alteration imagery maps of different minerals, sericite, chlorite, illite, kaolinite, calcite, epidote, and quartz, are obtained and classified, in addition to Mafic and Quartz Index. The processed and interpreted aeromagnetic data helped effectively for the detection of the deep subsurface and near-surface structural elements affecting the area and inspection favorable sites of mineralization that give strong magnetization of which chromite bodies associated with serpentinite rocks. In addition, the aerospectrometric data, equivalent uranium eU, equivalent thorium eTh, potassium K%, and total count (TC), were analyzed and hence the ratio maps (eTh/K, eU/K, and eU/eTh) and ternary radioelement composite images were produced to infer the enriched sites of U and Th mineralization. The integration of these results was guided and tied with previous geological information, especially ancient and present gold mines and associated mineral deposits. Such results gave clear clue about the existing number of basic to ultrabasic parallel wide dikes injected within fault zones trending mainly parallel to the Red Sea rift tectonics (NW and NNW directions) and other faults/dikes, trending in the NE direction. The long-extended NW trending wide dykes are cutting across the whole investigated area reflecting its deeper extension. Other faults show lateral displacements representing major shear zones, trending mainly in the NE direction. The produced potentiality map using GIS technique showed that most of the ancient gold mines and/or associated mineral deposits are related and controlled greatly with the detected structural elements, dykes, and rock affinity. Hence, it is easy to follow other sites that could have a high potential for mineral deposits including a gold through further field investigation in coordination with the detailed ground geophysical survey.
英文关键词	Remote sensing ASTER Aeromagnetic Gamma-ray spectrometry Dungash-Atud Eastern Desert Gold mineralization
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000627846500003
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349552
作者单位	[Ghazala, Hosni] Mansoura Univ, Dept Geol, Fac Sci, Mansoura, Egypt; [Aboelkhair, Hatem] Damietta Univ, Dept Geol, Fac Sci, New Damietta, Egypt; [Aboelkhair, Hatem] Damietta Univ, Ctr Space Res & Applicat CSRA, New Damietta, Egypt; [Thabet, Waleed] Egyptian Mineral Resources Author EMRA, Cairo, Egypt
推荐引用方式 GB/T 7714	Ghazala, Hosni,Aboelkhair, Hatem,Thabet, Waleed. Integration of ASTER and geophysical data for delineating potential mineralization zones in Dungash-Atud area, Central Eastern Desert, Egypt[J],2021,14(6).
APA	Ghazala, Hosni,Aboelkhair, Hatem,&Thabet, Waleed.(2021).Integration of ASTER and geophysical data for delineating potential mineralization zones in Dungash-Atud area, Central Eastern Desert, Egypt.ARABIAN JOURNAL OF GEOSCIENCES,14(6).
MLA	Ghazala, Hosni,et al."Integration of ASTER and geophysical data for delineating potential mineralization zones in Dungash-Atud area, Central Eastern Desert, Egypt".ARABIAN JOURNAL OF GEOSCIENCES 14.6(2021).