District-scale mapping of Mississippi Valley-type Pb-Zn mineralisation potential through an AHP-TOPSIS model: a case study from the southern Hamedan area (western Iran)

S. Darabi, Hooshang Asadi Haroni, M. A. Aliabadi

Research output: Contribution to journalArticlepeer-review

Abstract

The southern Hamedan area in western Iran is a region with high potential for Mississippi Valley type Pb-Zn mineralisation, for which a suitable prospecting map is needed to optimise future mineral exploration. Satellite imagery, geologic and geochemical data sets of the area were used to map Pb-Zn mineralisation potential using the analytical hierarchy process and the technique of order preference by similarity to the ideal solution (AHP-TOPSIS). Various criteria maps representing specific Pb-Zn criteria, such as lithological classes, structural controls, hydrothermal alteration, and geochemical anomalies in the Pb and Zn catchment basin geochemical anomalies, were integrated using the AHP-TOPSIS approach to obtain a final favourable map of Pb-Zn mineralisation in the southern Hamedan area. Fractal analysis was used to classify the final potential map into three zones: highly favourable, favourable, and slightly favourable. The four known Pb-Zn deposits are located in or adjacent to the highly favourable pixels. It is recommended that the unexplored highly favourable and favourable zones be considered for further exploration.

Original languageEnglish
Pages (from-to)301-316
Number of pages16
JournalBulletin of Geophysics and Oceanography
Volume64
Issue number3
DOIs
Publication statusPublished - Sept 2023

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