Fractal modeling and relationship between thrust faults and carbonate-hosted Pb-Zn mineralization in Alborz Mountains, Northern Iran

Central Alborz Metallogenic Belt is a major mineral province of northern Iran placed at the northern margin of the Arabia-Eurasia collision zone. This study aimed to at recognition the affiliation between reverse/thrust faults and Pb-Zn carbonate-hosted mineral deposition using fractal modeling. Thr...

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Bibliographic Details
Published in:Chemie der Erde 2021-11, Vol.81 (4), p.125803, Article 125803
Main Authors: Malaekeh, Ali, Ghassemi, Mohammad R., Afzal, Peyman, Solgi, Ali
Format: Article
Language:English
Subjects:
Alborz
Concentration-area fractal model
Fault density
Pb-Zn carbonate-hosted mineralization
Reverse/thrust faults
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Summary:Central Alborz Metallogenic Belt is a major mineral province of northern Iran placed at the northern margin of the Arabia-Eurasia collision zone. This study aimed to at recognition the affiliation between reverse/thrust faults and Pb-Zn carbonate-hosted mineral deposition using fractal modeling. Thrusting is the major mechanism of faulting in this region in terms of length, frequency and density. The carbonate-hosted Pb and Zn occurrence/deposit were classified using the concentration-number fractal method. All faults then are categorized based on fault density, and concentration-area fractal methods are utilized for the thrust faults. According to our analysis, main fault density zones are situated at the central and western parts of the Alborz Mountains. Relationship among the major fault density zones and the Pb-Zn carbonate-hosted occurrences/deposits using logratio matrix reveals that there is a proper connection between reverse/thrust faults and the Zn-Pb carbonate-hosted occurrences/deposits. Moreover, the results were controlled by four ore deposits/prospects in this region which shows high-grade ores directly relate to faults especially reverse/thrust faults based on their distribution. This research indicates that this method can be used for other various ore deposit types that have been distributed by faulting. •The Pb-Zn carbonate-hosted ores are classified by the C-N fractal method.•All and reverse/thrust faults are categorized based on the FD and the C-A fractal model.•Correlation between the major FD zones and the Pb-Zn carbonate-hosted ores by logratio matrix
ISSN:0009-2819
1611-5864
DOI:10.1016/j.chemer.2021.125803