Mineral mapping and analysis of alteration characteristics using airborne hyperspectral remote sensing data in the Baiyanghe uranium and beryllium ore district,Xinjiang

doi:10.6046/gtzyyg.2017.02.23

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Abstract

The technology of hyperspectral remote sensing has the special advantages in regional alteration information extraction. Hyperspectral mineral mapping has important reference value for hydrothermal uranium exploration. In this paper, the data processing flow of CASI/SASI airborne hyperspectral remote sensing data was established and mixture tuned matched filtering was applied to realize minerals mapping in the Baiyanghe uranium and beryllium ore district, Xinjiang. The results of mineral mapping were evaluated by the field verification and the results show that the accuracy of three kinds of sericite’s mapping is higher than 85% and the accuracy of other minerals’ mapping is larger than 90%. The overlay analysis of uranium ore spots and the results of mineral mapping show that there is a significantly correlation of the characterization of spatial distribution between uranium ore spots and the alteration of hematite and Al-rich sericite. The alterations of hematite and Al-rich sericite are near the contact zone between Yangzhuang rock body and peripheral volcanic rocks and exhibit distinct characteristics of zoning. Furthermore, there may be some differences in the temperature of hydrothermal activity between the north and the south of the deposit according to the spatial distribution characteristics of three kinds of sericite, which indicates the existence of multiple hydrothermal activities in the region. The results obtained by the authors can provide references for prospecting prediction of the periphery of the ore district and regional geological genesis research.

Keywords solar radiation land surface temperature micro-landform microclimate

Issue Date: 03 May 2017

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	WEI Shenglong
	CHEN Zhibiao
	CHEN Zhiqiang
	WANG Qiuyun
	MA Xiuli
	YAN Xinyu

Cite this article:

WEI Shenglong,CHEN Zhibiao,CHEN Zhiqiang, et al. Mineral mapping and analysis of alteration characteristics using airborne hyperspectral remote sensing data in the Baiyanghe uranium and beryllium ore district,Xinjiang[J]. REMOTE SENSING FOR LAND & RESOURCES, 2017, 29(2): 160-166.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2017.02.23 OR https://www.gtzyyg.com/EN/Y2017/V29/I2/160

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