干旱区生态环境知识资源中心(Arid): Spaceborne mapping of hydrothermal alteration zones associated with the Mundiyawas-Khera copper deposit, Rajasthan, India, using SWIR bands of ASTER: Implications for exploration targeting

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DOI	10.1016/j.oregeorev.2020.103327
	Spaceborne mapping of hydrothermal alteration zones associated with the Mundiyawas-Khera copper deposit, Rajasthan, India, using SWIR bands of ASTER: Implications for exploration targeting
	Sengar, Vivek K.1,2; Venkatesh, A. S.1; Ray, P. K. Champati 2; Sahoo, P. R.1; Khan, Israil 3; Chattoraj, Shovan L.2
通讯作者	Venkatesh, A. S.
来源期刊	ORE GEOLOGY REVIEWS
ISSN	0169-1368
EISSN	1872-7360
出版年	2020
卷号	118
英文摘要	This paper discusses the effectiveness of spectroscopic techniques for identifying hydrothermal alteration zones associated with the Mundiyawas-Khera copper deposit, Alwar Basin, western India, and assesses implications for mineral exploration targeting in the greater Alwar basin. Mineral specific SWIR bands of ASTER were spectrally enhanced to highlight areas of anomalous Al-OH and Mg-OH responses, representing key mappable expressions of the Mundiyawas-Khera copper deposit. The hydroxyl-bearing mineral zones were identified at 98% and 95% threshold pixels, respectively. Kaolinite +/- scapolite, sericite (muscovite), tremolite and dolomite, contained in the felsic volcanic and dolomitic copper host rocks, were identified from spectroscopic data and corroborated with petrographic and XRD data. On this basis, distinct argillic, phyllic and propylitic hydrothermal alteration zones could be identified at Mundiyawas-Khera. The integrated approach presented here (i) identified a well defined phyllic alteration pattern in the felsic volcanic rocks, (ii) resulted in a comprehensive remotely sensed hydrothermal alteration map illustrating the spatial distribution of the copper-related hydrothermal alteration zones (i.e., an eastern argillic, a central phyllic, and a western propylitic zone), (iii) helped to delineate potential copper-rich zones coincident with a known lithostructural trend, and (iv) has implications for copper exploration in the greater Alwar basin.
英文关键词	Spectroscopy ASTER SWIR Hydrothermal alteration Copper Exploration targeting Alwar basin
类型	Article
语种	英语
国家	India
收录类别	SCI-E
WOS记录号	WOS:000518709000035
WOS关键词	REFLECTION RADIOMETER ASTER ; DELHI FOLD BELT ; THERMAL EMISSION ; METAL MINERALIZATION ; ALTERATION MINERALS ; EASTERN DESERT ; ALWAR BASIN ; NORTH ; AREA ; EXTRACTION
WOS类目	Geology ; Mineralogy ; Mining & Mineral Processing
WOS研究方向	Geology ; Mineralogy ; Mining & Mineral Processing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315256
作者单位	1.Indian Sch Mines, Dept Appl Geol, Indian Inst Technol, Dhanbad 826004, Bihar, India; 2.Indian Space Res Org, Indian Inst Remote Sensing, Dehra Dun 248001, Uttarakhand, India; 3.Geol Survey India, State Unit Odisha, Kolkata, India
推荐引用方式 GB/T 7714	Sengar, Vivek K.,Venkatesh, A. S.,Ray, P. K. Champati,et al. Spaceborne mapping of hydrothermal alteration zones associated with the Mundiyawas-Khera copper deposit, Rajasthan, India, using SWIR bands of ASTER: Implications for exploration targeting[J],2020,118.
APA	Sengar, Vivek K.,Venkatesh, A. S.,Ray, P. K. Champati,Sahoo, P. R.,Khan, Israil,&Chattoraj, Shovan L..(2020).Spaceborne mapping of hydrothermal alteration zones associated with the Mundiyawas-Khera copper deposit, Rajasthan, India, using SWIR bands of ASTER: Implications for exploration targeting.ORE GEOLOGY REVIEWS,118.
MLA	Sengar, Vivek K.,et al."Spaceborne mapping of hydrothermal alteration zones associated with the Mundiyawas-Khera copper deposit, Rajasthan, India, using SWIR bands of ASTER: Implications for exploration targeting".ORE GEOLOGY REVIEWS 118(2020).