Comparison of Three Principal Component Analysis Techniques to Porphyry Copper Alteration Mapping: A Case Study, Meiduk Area, Kerman, Iran

Tangestani, Majid H.; Moore, Farid

doi:10.1080/07038992.2001.10854931

Cited by 103 publications

(31 citation statements)

References 2 publications

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“…Spectral unmixing (Smith et al, 1985) is one such technique and endeavors at searching the abundances or fractions of pure spectral components, so called end members, which best explain the observed mixed pixel spectra. PCA of images has been shown to be a successful tool to minimize the vegetation effect in the resulting images Kaufman, 1988;Loughlin, 1991;Fraser, 1991;Bennett et al, 1993;Ruiz Armenta and Prol Ledesma, 1998;Tangestani and Moore, 2001). The principal components can be analyzed using the standard or selective method.…”

Section: Alteration Mappingmentioning

confidence: 99%

Application of remote sensing and GIS in mineral resource mapping-An overview

Rajesh

2004

Journal of Mineralogical and Petrological Sciences

107

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Remote sensing, as a direct adjunct to field, lithologic and structural mapping, and more recently, GIS have played an important role in the study of mineralized areas. A review on the application of remote sensing in mineral resource mapping is attempted here. It involves understanding the application of remote sensing in lithologic, structural and alteration mapping. Remote sensing becomes an important tool for locating mineral deposits, in its own right, when the primary and secondary processes of mineralization result in the formation of spectral anomalies. Reconnaissance lithologic mapping is usually the first step of mineral resource mapping. This is complimented with structural mapping, as mineral deposits usually occur along or adjacent to geologic structures, and alteration mapping, as mineral deposits are commonly associated with hydrothermal alteration of the surrounding rocks. In addition to these, understanding the use of hyperspectral remote sensing is crucial as hyperspectral data can help identify and thematically map regions of exploration interest by using the distinct absorption features of most minerals. Finally coming to the exploration stage, GIS forms the perfect tool in integrating and analyzing various georeferenced geoscience data in selecting the best sites of mineral deposits or rather good candidates for further exploration.

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Section: Alteration Mappingmentioning

confidence: 99%

Application of remote sensing and GIS in mineral resource mapping-An overview

Rajesh

2004

Journal of Mineralogical and Petrological Sciences

107

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“…Different types of Principal Component Analysis (PCA) have been used in order to extract desired spectral signatures from remotely sensed data (Tangestani & Moore 2001). Developed Selective Principal Component Analysis (DSPCA) has been successfully proposed and applied on previous Landsat data by (Crósta & Moore 1990), thus a DSPCA was carried out in order to map Al-OH bearing altered rocks in this study.…”

Section: Resultsmentioning

confidence: 99%

Targeting Hydrothermal Alterations Utilizing Landsat-8 Andaster Data in Shahr-E-Babak, Iran

Safari

Pour

Maghsoudi

et al. 2017

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Shahr-e-Babak tract of the Kerman metalogenic belt is one of the most potential segments of Urumieh-Dokhtar (Sahand-Bazman) magmatic arc. This area encompasses several porphyry copper deposits in exploration, development and exploitation hierarchy. The aim of this study is to map hydrothermal alterations caused by early Cenozoic magmatic intrusions in Shahr-e-Babak area. To this purpose, mineral mapping methods including band combinations, ratios and multiplications as well as PCA and MNF data space transforms in SWIR and VNIR for both ASTER and OLI sensors. Alteration zones according to spectral signatures of each type of alteration mineral assemblages such as argillic, phyllic and propylitic are successfully mapped. For enhancing the target areas false color composites and HSI-RGB color space transform are performed on developed band combinations. Previous studies have proven the robust application of ASTER in geology and mineral exploration; nonetheless, the results of this investigation prove applicability of OLI sensor from landsat-8 for alteration mapping. According to the results, evidently OLI sensor data can accurately map alteration zones. Additionally, the 12-bit quantization of OLI data is its privilege over 8-bit data of ASTER in VNIR and SWIR, thus OLI high quality results, which makes it easy to distinguish targets with enhanced color contrast between the altered and unaltered rocks.

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“…PCA is widely used for mapping of alteration in metallogenic provinces (Abrams et al 1997;Kaufman 1988;Loughlin 1991;Bennett et al 1993;Tangestani and Moore 2001).…”

Section: Crosta Methodsmentioning

confidence: 99%

Use of spectral analysis for detection of alterations in ETM data, Yazd, Iran

Poormirzaee

Oskouei

2010

Appl Geomat

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Spectral analysis methods were used for detection of mineralogical features on a set of Enhanced Thematic Mapper Plus data of Behabad zone, central Iran. Several indicative minerals for hydrothermal alterations were identified in the study area. The spectra of unknowns were determined by comparing to USGS mineral spectral library. Different pre-processings and processings were performed to achieve the highest possible accuracy. These are the minimum noise fraction, the pixel purity index analysis, spectral feature fitting, spectral angle mapper and binary encoding. The results of spectral analysis, as a map of minerals abundances, along with the results of other Image processing methods such as least square fit, and Crosta method were integrated within ArcGIS Software to achive a potential map of hydrothermal alterations. The minerals: allanite, magnetite, alunite, clay minerals, and muscovite were therefore detected and mapped in this study. The detected alterations here highly match to the mineral concentrations which are formerly found and measured in the study area that emphasizes the reliability of the applied method.

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Comparison of Three Principal Component Analysis Techniques to Porphyry Copper Alteration Mapping: A Case Study, Meiduk Area, Kerman, Iran

Cited by 103 publications

References 2 publications

Application of remote sensing and GIS in mineral resource mapping-An overview

Application of remote sensing and GIS in mineral resource mapping-An overview

Targeting Hydrothermal Alterations Utilizing Landsat-8 Andaster Data in Shahr-E-Babak, Iran

Use of spectral analysis for detection of alterations in ETM data, Yazd, Iran

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