DOI: 10.1016/j.jag.2017.05.004
Scopus记录号: 2-s2.0-85032190249
论文题名: Hyperspectral remote sensing applied to mineral exploration in southern Peru: A multiple data integration approach in the Chapi Chiara gold prospect
作者: Carrino T ; A ; , Crósta A ; P ; , Toledo C ; L ; B ; , Silva A ; M
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2018
卷: 64 起始页码: 287
结束页码: 300
语种: 英语
英文关键词: Gold
; Hydrothermal alteration
; HyMap
; Multiple data
; Peru
Scopus关键词: epithermal deposit
; gold
; hydrothermal alteration
; magnetic field
; mineral exploration
; multispectral image
; petrography
; remote sensing
; X-ray diffraction
; Peru
英文摘要: Remote sensing is a strategic key tool for mineral exploration, due to its capacity of detecting hydrothermal alteration minerals or alteration mineral zones associated with different types of mineralization systems. A case study of an epithermal system located in southern Peru is presented, aimed at the characterization of mineral assemblies for discriminating potential high sulfidation epithermal targets, using hyperspectral imagery integrated with petrography, XRD and magnetic data. HyMap images were processed using the Mixture Tuned Matched Filtering (MTMF) technique for producing alteration map in the Chapi Chiara epithermal gold prospect. Extensive areas marked by advanced argillic alteration (alunite-kaolinite-dickite ± topaz) were mapped in detail, as well as limited argillic (illite-smectite) and propylitic (chlorite spectral domain) alteration. The magmatic-hydrothermal processes responsible for the formation of hypogene minerals were also related to the destruction of ferrimagnetic minerals (e.g., magnetite) of host rocks such as andesite, and the remobilization/formation of paramagnetic Fe-Ti oxides (e.g., rutile, anatase). The large alteration zones of advanced argillic alteration are controlled by structures related to a regional NW-SE trend, and also by local NE-SW and ENE-WSW ones. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79919
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Geology, Federal University of Pernambuco, Av. da Arquitetura, s/n, Recife-Pernambuco, Brazil; Institute of Geosciences, University of Campinas, PO Box 6152, Campinas, São Paulo, Brazil; Institute of Geosciences, University of Brasília, Campus Universitário Darcy Ribeiro s/n, Asa Norte, Brasília, Distrito Federal, Brazil
Recommended Citation:
Carrino T,A,, Crósta A,et al. Hyperspectral remote sensing applied to mineral exploration in southern Peru: A multiple data integration approach in the Chapi Chiara gold prospect[J]. International Journal of Applied Earth Observation and Geoinformation,2018-01-01,64