Using the Singularity Method in Identifying of the Alterations in the Zafarghand Porphyry Copper Deposit (Isfahan)

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Department of Mining Engineering, Amirkabir University of Technology (Tehran Polytechnic)

Abstract

Nowadays, geological remote sensing in the shortest time and with the lowest cost makes access to different areas very easy and determines the suitable places for the formation of hydrothermal deposits. In the upcoming study, with the help of a satellite image processing technique, the alteration zones of the Zafarghand exploration area will be highlighted. The exploration area of Zafarghand is located in the northeast of Isfahan and is based on the division of geological structural zones in the central Iran zone (the middle part of the Urmia-Dokhtar magmatic volcanic arc). The Zafarghand porphyry system includes phyllic, potassic, propylitic, argillic, and slightly siliceous alteration halos. In this study, by using the images of the ASTER sensor, the related alterations have been identified. For this purpose, according to the raster and digital nature of satellite images, the digital number values of each pixel from the image matrix set are considered as a sample of a systematic network. Finally, the singularity method algorithm has been implemented as an effective structural method for the separation of geochemical anomalies on the set of pixel number digital values of the ASTER sensor satellite images. The results obtained from the aforementioned technique show that the use of the singularity method has been successful in decision-making due to its structural nature and has been very effective in determining the alteration zones of the Zafarghand region, especially propylitic and phyllic alterations. Finally, with the help of the proposed method, an alteration map of Zafarghand area has been prepared.

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Main Subjects

Advanced Applied Geology

Articles in Press, Corrected Proof
Available Online from 24 August 2024

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