Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Improvement of geochemical prospectivity mapping using power spectrum; area fractal modeling of multi-element mineralization factor (SAF-MF)

Mirmahdi Seyedrahimi-Niaraq and Hossein Mahdiyanfar
Improvement of geochemical prospectivity mapping using power spectrum; area fractal modeling of multi-element mineralization factor (SAF-MF)
Geochemistry - Exploration, Environment, Analysis (August 2022) 22 (4)

Abstract

Geochemical anomaly mapping is a significant aim in exploring for Au and associated elements using fine fraction sediments. The fractal behavior of geochemical elements has frequently been modeled for geochemical prospectivity mapping. In this study, concentration-area (C-A) and power spectrum-area (S-A) fractal modeling were utilized for Au concentration in stream sediments near the Saqqez mineralization area, NW Iran. Therefore, a novel integrated approach based on the S-A fractal method and principal component analysis (PCA) was used to improve the geochemical anomaly map. In this approach, the multi-element mineralization factor returned from PCA was modeled by the S-A fractal method, and the obtained results were compared to the C-A and S-A fractal models of the Au element. Six known mineralization zones in the studied area were revisited for validating the fractal models. The elements Au, As, W, and Sb were identified as associated elements based on the log-ratio transformed data in the shear zone gold mineralization. The spectrum-area fractal modeling of multi-element mineralization factor (SAF-MF) of the Au-associated elements in the mineralization zones enhanced the geochemical halos and increased the prediction rate of mineralization zones using the stream sediment geochemical data. The SAF-MF that models the behavior of frequency signals of associated elements upgraded the geochemical anomaly mapping compared to the conventional fractal models. Supplementary material: https://doi.org/10.6084/m9.figshare.c.6123537


ISSN: 1467-7873
EISSN: 2041-4943
Serial Title: Geochemistry - Exploration, Environment, Analysis
Serial Volume: 22
Serial Issue: 4
Title: Improvement of geochemical prospectivity mapping using power spectrum; area fractal modeling of multi-element mineralization factor (SAF-MF)
Affiliation: University of Mohaghegh Ardabili, Faculty of Engineering, Ardabil, Iran
Pages: Article geochem2022-015
Published: 20220802
Text Language: English
Publisher: Geological Society Publishing House, London, United Kingdom
References: 55
Accession Number: 2022-052096
Categories: Economic geology, geology of ore deposits
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables, sketch maps
N33°00'00" - N38°00'00", E45°00'00" - E48°00'00"
Secondary Affiliation: University of Gonabad, IRN, Iran
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2022, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 202239
Close Modal

or Create an Account

Close Modal
Close Modal