Acta Geologica Sinica, ( ISI ), Volume (87), No (3), Year (2013-6) , Pages (830-842)

Title : ( Hydrothermal alteration mapping in northern Khur, Iran, using ASTER image processing: a new insight to the type of copper mineralization in the area )

Authors: Azadeh Malekzadeh Shafaroudi , Mohammad Hassan Karimpour ,

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Eastern Iran has a great potential for the discovery of different types of mineralization. The study area is a part of Tertiary magmatism of northern Lut block, which is located in Eastern Iran. Geology of the area is mostly covered by volcanic rocks, which are intruded by porphyritic subvolcanic intrusions in some places. Application of the spectral angle mapper (SAM) technique to ASTER images detected sericitic, silicification, argillic, and propylitic alterations and secondary iron oxides. The alteration is linear and associated within vein type mineralization. Twelve important prospect areas are selected for detailed exploration. Based on our processing results, in addition to NW-SE faults, which are associated with Cu mineralization indications, NE-SW faults are also shown to be important. Based on presence of subvolcanic rocks and numerous Cu ± Pb-Zn vein type mineralizations, extensive alteration, high anomaly of Cu and Zn (up to 100 ppm), age (43.6 to 31.4 Ma.) and initial 87Sr/86Sr ratio (0.7047 to 0.7065) of igneous rocks, and metallogenic epoch of the Lut block (middle Eocene to lower Oligocene) for formation of porphyry Cu and epithermal deposits, the studied area has shown great potential for porphyry copper deposits.

Keywords

, Lut block, ASTER, Spectral angle mapper, Porphyry copper, Metallogenic
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@article{paperid:1028202,
author = {Malekzadeh Shafaroudi, Azadeh and Karimpour, Mohammad Hassan},
title = {Hydrothermal alteration mapping in northern Khur, Iran, using ASTER image processing: a new insight to the type of copper mineralization in the area},
journal = {Acta Geologica Sinica},
year = {2013},
volume = {87},
number = {3},
month = {June},
issn = {1000-9515},
pages = {830--842},
numpages = {12},
keywords = {Lut block; ASTER; Spectral angle mapper; Porphyry copper; Metallogenic epoch},
}

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%0 Journal Article
%T Hydrothermal alteration mapping in northern Khur, Iran, using ASTER image processing: a new insight to the type of copper mineralization in the area
%A Malekzadeh Shafaroudi, Azadeh
%A Karimpour, Mohammad Hassan
%J Acta Geologica Sinica
%@ 1000-9515
%D 2013

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