Separation of geochemical anomalies from the background by using concentration-number fractal methods in the Veshnavah Area (South of Qom)
Subject Areas :Mohammad salehi 1 , HamidReza Nasseri 2 , Masoumeh Ahangari 3 , Fatemeh Asgari 4 , Gholam Abbas Fanaei Kheirabad 5 , Farshad Alijani 6
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Keywords: Fractal method Geochemical Concentration-Number Mineralization, Faults. ,
Abstract :
In this study, the concentration-number fractal method was used for regional exploration studies, and determining the anomalies of copper, lead and zinc elements. For this purpose, 800 samples of stream sediments were selected from the rivers in the area (i.e. from Kahak and Aran geological maps, 1: 100,000 sheets) and then the anomalies of these elements were mapped. The results show that strong copper anomalies are observed in the northern, central, southern and western parts of the area and the highest lead anomalies are located in the western part of the area. Strong anomalies of the zinc element are located in the central, southern and western parts of the region. These anomalies coincide with the lithological units of andesitic- basalt lava, volcanic breccia, tuffs, dacites, small scale masses of quartz -diorite, and small-scale masses of quartz-monzonite. The obtained map from combining anomalies and faults map reveals that the anomalies are mostly concentrated in fault zones and fault intersection points in the area and faults play a fundamental role in ore mineralization.
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