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Preprints
https://doi.org/10.5194/sed-6-1765-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/sed-6-1765-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

  18 Jul 2014

18 Jul 2014

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This preprint was under review for the journal SE but the revision was not accepted.

Recognition of a porphyry system using ASTER data in Bideghan – Qom province (central of Iran)

F. Feizi1 and E. Mansouri2 F. Feizi and E. Mansouri
  • 1Department of Mining Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
  • 2Young Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, Iran

Abstract. The Bideghan area is located south of the Qom province (central of Iran). The most impressive geological features in the studied area are the Eocene sequences which are intruded by volcanic rocks with basic compositions. Advanced Space borne Thermal Emission and Reflection Radiometer (ASTER) image processing have been used for hydrothermal alteration mapping and lineaments identification in the investigated area. In this research false color composite, band ratio, Principal Component Analysis (PCA), Least Square Fit (LS-Fit) and Spectral Angel Mapping (SAM) techniques were applied on ASTER data and argillic, phyllic, Iron oxide and propylitic alteration zones were separated. Lineaments were identified by aid of false color composite, high pass filters and hill-shade DEM techniques. The results of this study demonstrate the usefulness of remote sensing method and ASTER multi-spectral data for alteration and lineament mapping. Finally, the results were confirmed by field investigation.

F. Feizi and E. Mansouri

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F. Feizi and E. Mansouri

F. Feizi and E. Mansouri

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