干旱区生态环境知识资源中心(Arid): Spectral characterization of the Batuga granite pluton, South Eastern Desert, Egypt: influence of lithological and mineralogical variation on ASD Terraspec data

Arid

DOI	10.1007/s12517-020-06282-x
	Spectral characterization of the Batuga granite pluton, South Eastern Desert, Egypt: influence of lithological and mineralogical variation on ASD Terraspec data
	El Sobky, Mohamed A.; Madani, Ahmed A.; Surour, Adel A.
通讯作者	Surour, AA
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2020
卷号	13 期号:23
英文摘要	The paper concerns with potential utilization of Landsat-8 data combined with TerraSpec spectro-radiometer and field studies for mapping and discriminating the different granitic varieties of Batuga pluton in the South Eastern Desert of Egypt. Integrated data of band combination, principal component analysis (PCA), band rationing, fusion technique, and TerraSpec measurements substantially improve visual interpretation to differentiate between granite varieties as well as basalt dikes traversing the pluton. Compilation of field, petrographic, and spectral data enables to distinguish three varieties of granite, namely alkali feldspar granite, garnet-bearing leucogranite, and two-mica granite (monzogranite). False color composite (FCC) image PC1, PC3, and PC4 in R, G, and B, respectively, is successful to discriminate the western part of Batuga pluton as mica granite (monzogranite) but it failed to discriminate the other two granite types. On the other hand, the band ratio combination 6/7, 5/6, and 2/4 successfully used to discriminate the three varieties of granite. Also, the image fusion technique of false color composite (7, 5, & 2) and band ratio (6/7, 5/6, & 2/4) combinations with the high spatial resolution band 2 of Sentinel-2 is applied using the Gram-Schmidt method. Regarding with TerraSpec measurements, the alkali feldspar granite displays two absorption features around 1.4 and 2.25 mu m. Moreover, the garnet-bearing leucogranite shows four little absorption features at 1.4, 2.21, 2.25, and 2.33 mu m, while the mica granite shows low reflectance values throughout the VNIR and SWIR regions compared to the other two varieties, and low four absorption features at 1.4, 2.21, 2.25, and 2.33 mu m wavelengths. The basalt dikes show a low, nearly flat spectral profile in the VNIR and SWIR wavelength regions and small four absorption features also observed around the 0.65, 1.0, 1.2, and 2.32 mu m wavelengths. Data materialized in the paper suggests the usefulness of Landsat-8 and TerraSpec spectroradiometer data as a powerful combination to discriminate the granitic rocks and the traversing basalt dikes as well.
英文关键词	Batuga granite Lithological discrimination Mineralogy ASD Terraspec data Geological mapping
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000595628800003
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/2XILL650/327838
作者单位	[El Sobky, Mohamed A.] Egyptian Mineral Resources Author EMRA, POB 11517, Cairo, Egypt; [Surour, Adel A.] Galala Univ, Fac Adv Basic Sci, Petr & Min Geol, New Galala City, Egypt; [Madani, Ahmed A.; Surour, Adel A.] Cairo Univ, Fac Sci, Dept Geol, Giza 12613, Egypt
推荐引用方式 GB/T 7714	El Sobky, Mohamed A.,Madani, Ahmed A.,Surour, Adel A.. Spectral characterization of the Batuga granite pluton, South Eastern Desert, Egypt: influence of lithological and mineralogical variation on ASD Terraspec data[J],2020,13(23).
APA	El Sobky, Mohamed A.,Madani, Ahmed A.,&Surour, Adel A..(2020).Spectral characterization of the Batuga granite pluton, South Eastern Desert, Egypt: influence of lithological and mineralogical variation on ASD Terraspec data.ARABIAN JOURNAL OF GEOSCIENCES,13(23).
MLA	El Sobky, Mohamed A.,et al."Spectral characterization of the Batuga granite pluton, South Eastern Desert, Egypt: influence of lithological and mineralogical variation on ASD Terraspec data".ARABIAN JOURNAL OF GEOSCIENCES 13.23(2020).