Applying different methods of processing satellite images to identify and separate the alteration zones in the Khooni and KalKafi region (Esfahan province)

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MOHAMMADI N.m.; HEZARKHANI A.; MAGHSOUDI A.

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Journal: Researches in Earth Sciences Year:2018 | Volume:9 | Issue:33 Page(s): 137-152

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Title

Applying different methods of processing satellite images to identify and separate the alteration zones in the Khooni and KalKafi region (Esfahan province)

Author(s)

MOHAMMADI N.m. | HEZARKHANI A. | MAGHSOUDI A. | Issue Writer Certificate

Keywords

ASTERQ2

Remote SensingQ2

CrostaQ2

Band ratioQ2

Spectral angle mapperQ2

Abstract

Khooni exploratory area is located at 270 kilometers of Northeast of Esfahan and belongs to Central Iran geological zone. The Proterozoic metamorphic and Eocene volcanics rocks are the main geological features in the study area. In recent day, applying Remote Sensing in different sciences is going to be common. One of its important applications is the exploration of mineral resources. The goal of this research is delineation of alteration zones related to gold mineralization in the Khooni area by application of Remote Sensing methods. In order to achieve this aim, corrections were carried out on the images (ASTER). Different processing techniques of ASTER imagery such as false color composite, Band ratio, Selective Principal Component Analysis (Crosta) and Spectral angle mapper are used for identification of the alteration zones associated with gold mineralization. Finally, major alterations were enhanced in the region. Propylitic alteration in Khooni and phyllic and argillic alterations in the Kalkafi region were detected based on the resulting images. Then, the achieved results were compared with each other and geological map, for identification the optimal method. At the end, Spectral Angle Mapping was diagnosed as efficient method for more accurate separation of altered minerals. Also alteration areas of different processing methods have conformed to each other, the accuracy and efficiency of processing on ASTER satellite data.

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APA: Copy

MOHAMMADI, N.m., HEZARKHANI, A., & MAGHSOUDI, A.. (2018). Applying different methods of processing satellite images to identify and separate the alteration zones in the Khooni and KalKafi region (Esfahan province). RESEARCHES IN EARTH SCIENCES, 9(33 ), 137-152. SID. https://sid.ir/paper/207389/en

Vancouver: Copy

MOHAMMADI N.m., HEZARKHANI A., MAGHSOUDI A.. Applying different methods of processing satellite images to identify and separate the alteration zones in the Khooni and KalKafi region (Esfahan province). RESEARCHES IN EARTH SCIENCES[Internet]. 2018;9(33 ):137-152. Available from: https://sid.ir/paper/207389/en

IEEE: Copy

N.m. MOHAMMADI, A. HEZARKHANI, and A. MAGHSOUDI, “Applying different methods of processing satellite images to identify and separate the alteration zones in the Khooni and KalKafi region (Esfahan province),” RESEARCHES IN EARTH SCIENCES, vol. 9, no. 33 , pp. 137–152, 2018, [Online]. Available: https://sid.ir/paper/207389/en

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