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Fractal modeling and relationship between thrust faults and carbonate-hosted Pb-Zn mineralization in Alborz Mountains, Northern Iran
Geochemistry ( IF 3.7 ) Pub Date : 2021-07-28 , DOI: 10.1016/j.chemer.2021.125803
Ali Malaekeh 1 , Mohammad R. Ghassemi 2, 3 , Peyman Afzal 4 , Ali Solgi 1
Affiliation  

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.



中文翻译:

伊朗北部 Alborz 山逆冲断层与碳酸盐岩铅锌矿化的分形建模及关系

中央阿尔伯兹成矿带是伊朗北部的一个主要矿产省,位于阿拉伯-欧亚大陆碰撞带的北缘。本研究旨在使用分形模型识别反向/逆冲断层与含铅锌碳酸盐矿物沉积之间的联系。就长度、频率和密度而言,推力是该地区断层的主要机制。使用浓度-数分形方法对碳酸盐岩中的铅锌矿床进行分类。然后根据断层密度对所有断层进行分类,对逆冲断层采用集中区分形方法。根据我们的分析,主要的断层密度带位于阿尔伯兹山脉的中西部。主要断层密度带与 Pb-Zn 碳酸盐岩赋存矿床/沉积物之间的关系使用对数比矩阵表明逆冲断层和 Zn-Pb 碳酸盐岩赋存矿床/沉积物之间存在适当的联系。此外,结果受该地区四个矿床/勘探区的控制,表明高品位矿石与其分布直接相关,尤其是逆/逆冲断层。研究表明,该方法可用于其他各种已被断层分布的矿床类型。结果由该地区的四个矿床/前景控制,表明高品位矿石与断层直接相关,特别是根据其分布的反向/逆冲断层。研究表明,该方法可用于其他各种已被断层分布的矿床类型。结果由该地区的四个矿床/前景控制,表明高品位矿石与断层直接相关,特别是根据其分布的反向/逆冲断层。研究表明,该方法可用于其他各种已被断层分布的矿床类型。

更新日期:2021-07-28
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