DOI: 10.1016/j.jag.2013.07.004
Scopus记录号: 2-s2.0-84897822895
论文题名: Lithological and mineralogical survey of the Oyu Tolgoi region,Southeastern Gobi, Mongolia using ASTER reflectance and emissivitydata
作者: Son Y ; -S ; , Kang M ; -K ; , Yoon W ; -J
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2014
卷: 26, 期: 1 起始页码: 205
结束页码: 216
语种: 英语
英文关键词: ASTER
; BRLO model
; Matched filtering
; Oyu Tolgoi
; SWIR
; TIR
Scopus关键词: ASTER
; copper
; detection method
; gold
; lithology
; mineralogy
; ore deposit
; porphyry
; satellite data
; shortwave radiation
; Mongolia
; Oyu Tolgoi
; South Gobi
英文摘要: The Oyu Tolgoi porphyry Cu-Au deposits, Southeastern Gobi, Mongolia, are estimated to be among theworld's largest reserves. Advanced Spaceborne Thermal Emission and Reflectance Radiometer (ASTER)reflectance and emissivity data were used to map distribution patterns of hydrothermal alteration andigneous rocks, and to locate areas with potential mineral deposit in the Oyu Tolgoi region. To obtain moreaccurate information for the detection and classification of minerals, pre-processing such as crosstalk cor-rection and additional radiometric correction was performed. The shortwave infrared band ratio logicaloperator (SWIR-BRLO) models and matched filtering were used to map alteration zone and minerals inthe Oyu Tolgoi region. These results were fairly consistent with mineralogical information of previousresearches. In addition, we identified mineral potential areas with characteristics similar to the Oyu TolgoiCu-Au deposits. In particular, in the northwestern part of the OT North Pluton, an extensive area predictedto be an argillic zone was newly detected. ASTER Level 2B surface emissivity data was effectively usedfor lithological mapping of the Oyu Tolgoi region. The new thermal infrared band ratio logical operator(TIR-BRLO) models could detect areas showing emissivity features of quartzose and alkalic rocks. Theseresults indicate that despite some limitations, ASTER data can provide basic information in the initialsteps of ore deposit exploration, or when mapping the distribution of altered, quartzose and igneousrocks, especially in areas where direct field survey is difficult. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79681
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Energy and Resources Engineering, Chonnam National University, Gwangju 500-757, South Korea
Recommended Citation:
Son Y,-S,, Kang M,et al. Lithological and mineralogical survey of the Oyu Tolgoi region,Southeastern Gobi, Mongolia using ASTER reflectance and emissivitydata[J]. International Journal of Applied Earth Observation and Geoinformation,2014-01-01,26(1)