Combination of Spectral Feature Fitting (SFF) and Concentration-Number (C-N) Fractal Modeling for Identification Alteration in Tirka Area, NE Iran

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Zamyad Mina; AFZAL PEYMAN; POURKERMANI MOHSEN; NOURI REZA; JAFARI MOHAMMAD REZA

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Journal: GEOSCIENCES Year:2022 | Volume:31 | Issue:122 Page(s): 57-68

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Title

Combination of Spectral Feature Fitting (SFF) and Concentration-Number (C-N) Fractal Modeling for Identification Alteration in Tirka Area, NE Iran

Author(s)

Keywords

Fractal modeling

SFF

Hydrothermal alteration

Tirka

Abstract

Tirka area is situated in NE Iran as a part of the TCMB which consists of Paleogene sediments and volcanic rock units with a combination of Eocene intermediate to basic rocks. The research aim is to determine the alteration zones using C-N fractal model based on ASTER satellite images. First, the ASTER data was processed using SFF method for determination of iron oxide, propylitic, phyllic, and argillic alteration zones. The C-N fractal model is utilized for the separation of different parts of alteration zones. The results derived via the C-N fractal model showed that the main trend of the alteration zones is in NE-SW direction. Also, based on the C-N log-log plots, there are six geochemical populations for iron oxide alteration, four geochemical populations for argillic and phyllic alterations, and five geochemical populations for propylitic alteration. There is a high intensity of alteration zones commences with 223 for iron oxide, 204 for argillic, 199 for propylitic and phyllic alteration zones. In order to validate the results, field observations and petrographical and mineralographical studies based on thin-polish sections were carried out. These data confirmed the alteration zones obtained by the modeling. Also, using the Logratio matrix, the data obtained from the combination of remote sensing methods, fractal geometry and geological models were evaluated and verified.

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APA: Copy

Zamyad, Mina, AFZAL, PEYMAN, POURKERMANI, MOHSEN, NOURI, REZA, & JAFARI, MOHAMMAD REZA. (2022). Combination of Spectral Feature Fitting (SFF) and Concentration-Number (C-N) Fractal Modeling for Identification Alteration in Tirka Area, NE Iran. GEOSCIENCES, 31(122 ), 57-68. SID. https://sid.ir/paper/959050/en

Vancouver: Copy

Zamyad Mina, AFZAL PEYMAN, POURKERMANI MOHSEN, NOURI REZA, JAFARI MOHAMMAD REZA. Combination of Spectral Feature Fitting (SFF) and Concentration-Number (C-N) Fractal Modeling for Identification Alteration in Tirka Area, NE Iran. GEOSCIENCES[Internet]. 2022;31(122 ):57-68. Available from: https://sid.ir/paper/959050/en

IEEE: Copy

Mina Zamyad, PEYMAN AFZAL, MOHSEN POURKERMANI, REZA NOURI, and MOHAMMAD REZA JAFARI, “Combination of Spectral Feature Fitting (SFF) and Concentration-Number (C-N) Fractal Modeling for Identification Alteration in Tirka Area, NE Iran,” GEOSCIENCES, vol. 31, no. 122 , pp. 57–68, 2022, [Online]. Available: https://sid.ir/paper/959050/en

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