Spatial Analysis on Gold Mineralization in Southwest Saqqez Using Point Pattern, Fry and Fractal Analyses
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patial Analysis on Gold Mineralization in Southwest Saqqez Using Point Pattern, Fry and Fractal Analyses M. Maanijoua, *, N. Daneshvara, R. Alipoora, and H. Azizib aBu-Ali
Sina University, Faculty of Science, Department of Geology, Shahid Ahmadi Roshan street, Hamedan, 65174-33391 Iran b University of Kurdistan, Faculty of Engineering, Mining Department, Sanandaj, 66177-15175 Iran *e-mail: [email protected] Received September 21, 2019; revised March 15, 2020; accepted March 24, 2020
Abstract—The Baneh- Saqqez zone is part of the Sanandaj‒Sirjan Zone, northwest of Iran. Generally, this zone is recognized as a gold bearing zone, and the mineralization in it is controlled by faults. In this research, structural lineaments were extracted using Landsat 8 (OLI) image, in which the main lineaments trend NE‒SW, EW and NW‒SE. Spatial distributions of the mineralization are examined by using the point pattern, Fry and fractal analyses. The pattern of structural controls on the gold mineralization in southwest Saqqez, is almost regular, and the trend of gold mineralization and Fry points show NE‒SW and EW trends. Comparison of rose diagrams for the Fry analysis final translation points and faults in southwest Saqqez show that the orientations of mineralization are similar to NE‒SW and EW trending faults and that the mineralization intersects the NW‒SW trending faults. The results of fractal analysis suggest that gold occurrences in the area have higher fractal dimension. The deep regional faults cause a way for ore-bearing fluids to migrate and control the emplacement of the intrusive bodies and the position of ore mineralization in the Saqqez‒Baneh sub-zone. On that basis, a survey of spatial data and its relationship to structural features can be useful for future exploration and discovery of new occurrences of gold mineralization. Keywords: gold mineralization, point pattern, Fry analysis, fractal analysis, structural controls, fault, Saqqez DOI: 10.1134/S001685212004007X
INTRODUCTION Spatial point produces d-dimensional pattern of point [12]. The investigation of spatial point is a useful tool in modeling that has different uses in several fields of interest, such as geology, material science, geography, astronomy and others [12, 23, 48, 75]. Many authors have considered point pattern in similar types of mineralization [18, 48, 75]. Based on these genetic studies, geological features or processes have controlled mineral deposits. Therefore, spatial distributions of known mineral deposits/occurrences can play a key role for providing useful information on mineralization processes in regional exploration and assessment of undiscovered resources [35, 42, 51, 69, 75]. The study of point pattern of certain types of similar ore deposits could show geological features that have a key role in ore generation that controls their formation and can be investigated by point pattern analysis [23], Fry analysis [28] and fractal analysis [44, 45]. Purely geometrical approach is presented in our research to investigate the spatial distr
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