Acta Geologica Sinica, ( ISI ), Volume (88), No (4), Year (2014-8) , Pages (1195-1213)

Title : ( Discrimination of different erosion levels of porphyry Cu deposits using ASTER image processing in Eastern Iran: a case study on Maherabad, Shadan, and Chah Shaljami areas )

Authors: Mohammad Hassan Karimpour , Nazi Mazhari , Azadeh Malekzadeh Shafaroudi ,

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Lut block, eastern Iran, is one of the most extensive Cenozoic magmatic rocks that show suitable targets for porphyry Cu-Au and high-sulfidation epithermal Au related to porphyry Cu-Au mineralization. In this study capability of Advanced Space-borne Thermal Emission and Reflection Radiometer (ASTER) are used to identify the different erosion levels of three porphyry Cu deposits, including Maherabad, Shadan, and Chahshaljami, located in the Lut block volcanic–plutonic belt. Alteration minerals, including kaolinite, dickite, alunite, jarosite, epidote, chlorite, montmorillonite, muscovite, biotite, orthoclase, gypsum, and quartz are selected to map with respect to different alteration zones and erosion levels. Distributions of endmembers are mapped by using the SAM and MTMF in VNIR and SWIR of ASTER bands and the results are evaluated against the field studies. For some endmember the results of SAM processing are more reliable than MTMF because of loosing field spectra, the use of angle threshold in SAM, MF-score and infeasibility value in MTMF or low abundance of some endmembers but finally comparison of Output images of spectral processing are shown good correlation with alteration maps. Differentiation and explanation of various erosion levels of porphyry Cu deposits are done successfully by using the ASTER sensor data.

Keywords

, ASTER, SAM, MTMF, Porphyry copper deposits, Lut
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@article{paperid:1035620,
author = {Karimpour, Mohammad Hassan and Mazhari, Nazi and Malekzadeh Shafaroudi, Azadeh},
title = {Discrimination of different erosion levels of porphyry Cu deposits using ASTER image processing in Eastern Iran: a case study on Maherabad, Shadan, and Chah Shaljami areas},
journal = {Acta Geologica Sinica},
year = {2014},
volume = {88},
number = {4},
month = {August},
issn = {1000-9515},
pages = {1195--1213},
numpages = {18},
keywords = {ASTER; SAM; MTMF; Porphyry copper deposits; Lut block},
}

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%0 Journal Article
%T Discrimination of different erosion levels of porphyry Cu deposits using ASTER image processing in Eastern Iran: a case study on Maherabad, Shadan, and Chah Shaljami areas
%A Karimpour, Mohammad Hassan
%A Mazhari, Nazi
%A Malekzadeh Shafaroudi, Azadeh
%J Acta Geologica Sinica
%@ 1000-9515
%D 2014

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