干旱区生态环境知识资源中心(Arid): ASTER mapping and geochemical analysis of chromitite bodies in the Abu Dahr ophiolites, South Eastern Desert, Egypt

Arid

DOI	10.1007/s12517-020-05624-z
	ASTER mapping and geochemical analysis of chromitite bodies in the Abu Dahr ophiolites, South Eastern Desert, Egypt
	Seleem, Tarek; Hamimi, Zakaria; Zaky, Khairy; Zoheir, Basem
通讯作者	Seleem, T
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2020
卷号	13 期号:15
英文摘要	The Neoproterozoic Abu Dahr ophiolitic massif (similar to 280 km(2)) in the South Eastern Desert of Egypt is one of the largest ophiolitic nappes in Egypt. Since in the early twentieth century, this nappe was the main source for chromitite, along with, magnesite, and asbestos (chrysotile and tremolite). In this study, we investigate the efficiency of using the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) imagery data in mapping the different rock units and chromitite bodies of the Abu Dahr nappe. The image processing techniques used encompassing decorrelation stretching, principal component analysis (PCA), minimum noise fraction (MNF), and band ratio (BR). The obtained results are verified by field work and microscopic investigations. The chemistry of chromite by using electron probe microanalysis (EPMA) technique indicates Cr-rich and Al-poor composition consistent with Cr-spinel in weakly metamorphosed fore-arc ultramafites formed in a low Al supra-subduction zone environment. The results reveal the efficiency of the ASTER data in mapping the chromitite bodies in metamorphosed ophiolitic nappes.
英文关键词	Abu Dahr ophiolite Chromitite ASTER EPMA Eastern Desert Egypt
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000555968100005
WOS关键词	SPINEL ; PERIDOTITES
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/2XILL650/325435
作者单位	[Seleem, Tarek] Suez Canal Univ, Fac Sci, Geol Dept, Ismailia, Egypt; [Hamimi, Zakaria; Zoheir, Basem] Benha Univ, Fac Sci, Geol Dept, Banha, Egypt; [Zaky, Khairy] Menia Univ, Fac Sci, Geol Dept, Al Minya, Egypt; [Zoheir, Basem] Univ Kiel, Kiel, Germany
推荐引用方式 GB/T 7714	Seleem, Tarek,Hamimi, Zakaria,Zaky, Khairy,et al. ASTER mapping and geochemical analysis of chromitite bodies in the Abu Dahr ophiolites, South Eastern Desert, Egypt[J],2020,13(15).
APA	Seleem, Tarek,Hamimi, Zakaria,Zaky, Khairy,&Zoheir, Basem.(2020).ASTER mapping and geochemical analysis of chromitite bodies in the Abu Dahr ophiolites, South Eastern Desert, Egypt.ARABIAN JOURNAL OF GEOSCIENCES,13(15).
MLA	Seleem, Tarek,et al."ASTER mapping and geochemical analysis of chromitite bodies in the Abu Dahr ophiolites, South Eastern Desert, Egypt".ARABIAN JOURNAL OF GEOSCIENCES 13.15(2020).