PREDICTED RESOURCE ASSESSMENT OF CENTRAL KAZAKHSTA ORE DISTRICTS BASED ON AIRBORNE GEOPHYSICAL METHODS
Оцінка прогнозних ресурсів рудних районів Центрального Казахстану на основі аерогеофізичних методів
Saurykov Zh. Istekova S. Sirazhev A. Aidarbekov Zh.
30 November 2023Natsionalnyi Hirnychyi Universytet
Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu
2023Issue 519 - 26 pp.
Purpose. The research is aimed at creating a highquality geophysical basis for the additional geological study of Central Kazakhstan in determining the geological structure of the study area, identifying promising areas for further geological exploration, as well as analyzing the anomalous distribution of various minerals. Methodology. The research uses the methods of aeromagnetic, airborne gammaray spectrometry and gravimetric (ground) surveys. The obtained new airborne geophysical data are used for additional study of the geological structure of the district and the creation of a model of the geological structure of the study area. Gammaray spectrometry data analysis is conducted for detailed mapping of intrusive complexes and study of their lithological heterogeneity. Findings. The processing and interpretation of the materials of the conducted field studies in combination with the results of the geologicalgeophysical data analysis made it possible to refine the geological structure and to present a model of oreprospecting complexes in the study area. Areas with an anomalous distribution of potassium, uranium, and thorium have been identified, which make it possible to assess the structural heterogeneity of hidden magmatic massifs and to reveal a connection with gold, copperpolymetallic and raremetal mineralization. Recommendations for further detailed geological exploration, including prospectingexploration drilling, are given. Originality. Research has shown the high efficiency of airborne geophysical methods, such as aeromagnetic and airborne gammaray spectrometry surveys to study the geological structure of ore areas, and in combination with detailed gravimetric exploration to identify lithological heterogeneity of igneous and sedimentary rocks in the study area. New scientificmethodological techniques and the geological structure model based on them gave an opportunity to assess the prospect of the study area for ore mineralization. Practical value. The identified promising areas for mining of minerals are of interest for further research and exploration. The integrated use of geologicalgeophysical data will make it possible to determine more precisely the nature of radioactive anomalies and to reveal their relationship with oreprospecting horizons. In general, the research results contribute to increasing the efficiency and reducing the geological survey costs.
airborne gamma-ray spectrometry survey , geophysical surveys , interpretation , mineral resources , zoning
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Satbayev University, Almaty, Kazakhstan
Satbayev University
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